Data communication is now a part of our daily lives whether it be our cell phone or short range Bluetooth link etc. Most of our daily encounters with radio are mass market solutions to communication needs.They are ubiquitous, price sensitive, high volume solutions that we take for granted and which also create a pre-conception as to what is or isn't possible using radio communciations.

Below these heady mass markets there is a lower level and more specific demand for radio data communications. Demands that are not mega high volume, that need cost effective A to B connectivity and which are specific to a manufacturer and or a market sector.

To sign up for our e-newsletter, please contact sales@woodanddouglas.co.uk, or use the mailing list subscription box as located at the bottom of this page.

If you wish to receive press releases from Wood & Douglas please contact Gary Marshall, gary@xl-comms.com

This page contains important legal information regarding this site. Please read carefully.

Please contact us if you have any queries regarding privacy and the use of your data.

Privacy Policy This policy explains how Wood & Douglas Limited uses any information you provide to us during your use of our web site.

The www.woodanddouglas.co.uk website ("the Website") is operated by Wood & Douglas Limited ("us") which is the Data Controller for the purposes of the Data Protection Act 1998. You may contact us at the following address: Lattice House, Baughurst Road, Baughurst, Tadley, RG26 5LP

The information you provide to us during your use of our Website will be used by us in order to supply you with services [under the Terms and Conditions of our Website]. We may also collect information about you in order to contact you from time to time by email or telephone with details of opportunities which may be of interest to you.

If you do not wish to receive information from us or our associated organisations, agents and suppliers in the future please tick the relevant box on the registration forms.

We will not transfer any information that we hold on you to anyone.

We use small files known as "cookies" in order to facilitate the use of our Website. Cookies do not contain information which enable anyone to contact you directly by telephone, e-mail or in any other way. Cookies are important as they enable us to deliver the services from the Website. It is a requirement of any person who subscribes to the Website to allow the use of cookies and we cannot accept any responsibility if you disable cookies in your browser.

You may at any time request a copy of the information we hold on you (for which we may charge a small fee) by writing to us at the above address.

Wood & Douglas creates and delivers highly effective, quality wireless solutions across diverse worldwide markets.

Our products and services enable voice, data and video communication between people, machines and devices, delivering flexible and robust communications, monitoring, management and control solutions, often where wired communications is not physically or commercially viable.

Our highly skilled staff work across three manufacturing sites in the UK to develop a wide range of products and services powered by wireless technologies. Our customers are predominately based in Emergency Services, Exploration, Healthcare, Homeland Security, Transportation and Utilities.

Wood & Douglas: Wireless Designed; Wireless Developed; Wireless Delivered.

We always endeavour to never specify what we cannot measure.

Mining, quarrying and offshore exploration for oil and gas remain critical industries for the provision of energy supplies, precious metals used in industry and other raw materials. Exploration services take place in some of the most challenging and hostile environments, where safety, security and reliability are essential prerequisites to successful projects.

Reliable communications can be extremely difficult in these circumstances, particularly underground, at sea or over vast distances. Wood & Douglas specialises in delivering wireless communications in such challenging environments: from ship to shore communications to reliable video capture and delivery for the oil and gas industries; from seismic survey via radio for exploration to wireless perimeter fencing for large scales quarries and mines.

Delivering critical wireless applications in such demanding environments requires intelligent design and rock solid implementation. Wood & Douglas has proved its capability to combine creative vision with flawless execution.

Wood & Douglas was founded in 1977. The company expanded rapidly to deliver complex and high quality wireless products and services to commercial customers. Today the company is active in the global wireless voice, data and video markets, both as an original manufacturer and as an end user supplier.

Since its inception, Wood & Douglas has been at the forefront of wireless technologies, combining research and development expertise and in-house manufacturing with customer insight to deliver the most effective and reliable products and services to its clients.

We have placed a selection of case studies here to allow you to understand some of things that we have been able to achieve in the past for our customers. Not everything we have achieved for our customers is listed here as there are many instances where we have been able to provide competitive advantages to our customers in their markets sectors so clearly they were not going to allow us to disclose this. If you are inspired by anything that you read and feel that that would improve your business then we would encourage you to contact one of our consultants so we can assist you further.

Wood & Douglas prides itself on providing a team of consultants that is able to deliver insight and add value to our clients.

Our team is based across three manufacturing sites in the UK, with specialists in system design, component manufacture and customer support.

Wood & Douglas provides several differentiators to organisations looking to deliver effective wireless communications:

Heritage:

Wood & Douglas has more than 30 years experience of creating wireless products and services. We have developed tens of thousands of successful projects, including in mission critical environments such as defence and emergency services

Customisation

Wood & Douglas works with all relevant public and private wireless standards. Our consultative approach enables us to deliver a successful solution to any issue

Quality

Wood & Douglas products are widely regarded as the best quality products available. Our research, development, design and product manufacture is carried out in house, to ensure the quality and reliability of our products.

Value

Wood &Douglas creates flexible solutions that enhance business performance and reduce cost. In many cases wireless can provide communication, management and control where a cabled solution is simply not viable

Specialist

Wood & Douglas is a specialist in wireless technologies with expertise in our key markets. Our clients welcome our reliable delivery and premium service

Wood & Douglas is a leading creator of wireless products and services. The company has a thirty year track record of delivering both standard and bespoke wireless products and services to industry and government. The company has built its reputation around creating innovative wireless solutions that deliver the highest levels of reliability and functionality.

Wood & Douglas works with organisations to deliver the right high quality wireless products and services between people, machines and devices. Wood & Douglas’ customers are diverse but predominately active in Emergency Services, Exploration, Healthcare, Homeland Security, Transportation and Utilities.

Wood & Douglas has a highly skilled and specialist team that works across three manufacturing sites in the UK, designing, developing and deploying a wide range of cost effective services across a range of bespoke and standard wireless technologies.

Businesses in the utilities market operate in an increasingly complex environment. They need to ensure the security of remote assets, manage geographically diverse operations, plan and deliver reliable services over complex networks.

Wireless products and services enable utilities to more effectively measure, monitor and control operations. From the remote monitoring of reservoirs, to ensuring the security of unstaffed facilities to rolling out new and more effective energy monitoring and control equipment, wireless communications enables utilities companies to develop more effective and reliable services.

Wood & Douglas has worked with leading utility companies such as Thames Water, United Utilities and Western Power to develop and implement robust wireless services helping utility companies deliver a more effective and efficient business.

More than half of the population born today will live to the age of 100 or more. As the population ages, the need to manage serious but non-life threatening illnesses for longer will continue to grow. The healthcare market will rely on new thinking to develop smart solutions to the challenges of tomorrow.

Central to this new thinking will be the smart application of wireless technology, enabling people to live a more independent life for longer, in an environment where their wellbeing is discreetly monitored. Developments in wireless ensure that people who need the support of medical staff receive it quickly and effectively.

The connected world offers opportunities to create new healthcare services that meet the needs of today’s environment. Wood & Douglas will be a central part of these development, using its specialist wireless expertise and experience to create new ways to care for the needs of the population in the 21^st century.

By the end of 2010, more than 55% of the world’s population were living in cities. The increasing urbanisation of society creates new challenges for transportation within and between metropolises. Environmental concerns are also driving new transportation systems – to deliver a better experience more sustainably.

From cars that diagnose issues and communicate these in real time, to integrated public transportation systems that enable smarter travel in urban environments, wireless technologies have a significant role to play in unlocking more seamless and sustainable means of transport.

Wood & Douglas has designed and developed many leading edge wireless services for the transportation industries. From intelligent traffic signalling that recognises the arrival of a bus and prioritises its passage, to wireless video applications for trains, enabling the safety of passengers and staff, Wood & Douglas is working to deliver wireless applications that make journeys safer and more effective.

The events of and since September 11th 2001 have, and continue to reshape the world. Governments across the globe have had to develop new and more effective means by which to protect their citizens. Developments in wireless have enabled new forms of intelligence gathering that were previously unimaginable.

Wood & Douglas works with a number of homeland security agencies around the world, helping them to develop new means of monitoring and managing information.

From new personal radio technologies offering encrypted and totally secure person to person communications suitable for extreme environments, to the remote capture and analysis of HD-quality video, Wood & Douglas continues to push back the frontiers of what is possible with wireless voice, data and video.

New applications of wireless technology enable emergency services to work in extreme environments in the knowledge that their safety is being monitored. From managing the location of personnel to ensure that human resources are being used to the greatest effect, to remote monitoring of breathing apparatus and other critical equipment, to the relay of voice and video at major incident scenes, wireless technologies are enabling emergency services personnel to do a more effective job.

An increasing number of emergency services are consulting with Wood & Douglas to develop new ways of working through wireless technology. Our experienced team's primary objective is to create services that deliver the reliability and flexibility that emergency services can trust in demanding environments.

Wood & Douglas provides wireless products and services in voice, data and video.

We work with companies that need to implement high quality, robust and reliable wireless products and services. We design and develop wireless solutions, either as original equipment manufacturers or for end user customers. We operate in a diverse range of markets but much of our work takes place in Emergency Services, Exploration, Healthcare, Homeland Security, Transport and Utilities.

Wood & Douglas has more than 65 employees across the three UK research, design and manufacturing sites. The Company takes pride in manufacturing all of its products within these three ISO approved production facilities. In total the business has more than 2,300 square metres of production and support space.

The Company is headquartered in North Hampshire, with easy access via the air, rail and major road networks. Central London, Heathrow and Gatwick airports are within one hour journey time of the Company’s headquarters.

In most situations we would welcome a call from you so that we can have a more complete conversation about the application that you are currently evaluating however we understand that this is not always convenient so we have attempted to list a number of questions that from our experience have often arisen. If the question that you need the answer too is not listed then please do contact us when you are able to or mail us on info@woodanddouglas.co.uk

This part of the web site is specifically for our existing partners and contains information that is specific to them.

The log-in process can only be completed after the log-in details have been sent to you by your named consultant. The site is constantly evolving and we want it to be as useful to you our partners as we can so if there is any aspect that you feel would improve your experience on this site then please let your consultant know.

This section is for people who would like to be kept in touch with the news and views of Wood & Douglas.

If you supply us with your details then we will provide you with newsletters and updates of what we are doing. Should you wish us to keep you updated on specific subjects then please let us or your consultant know.

Voice communications is one of the most established forms of communications know to man and as such it is also one of our most established product lines. We have taken care to ensure that the quality of our voice products is so high that we know people can use them continuously in their place of work with no discomfort due to the natural way in which the sound is delivered.

Visual communications are said to be more powerful than any other which is why we have built our Video solutions on the delivery of only the highest quality. We know that our customers demand this so that they are able succeed in achieving the results they are looking for in the complex deployment of their environments.

The use of a word like custom can be both misleading and off putting because it can suggest that there will be a complex process required to give the results that you need. For us this is not always the case as we just want to give our customers the best possible fit from our solutions to meet their needs and that is not always that hard to achieve. We recommend that you talk to our consultants first before you settle for a standard product which nearly does what you want.

To deliver our customers the most effective system to meet their business needs we have created a simple form which allows our consultants to logically go through all the areas of our systems and ask you relevant questions about what you need to achieve. When the information has been gathered our systems solution team can evaluated your details and design a system which should meet your stated needs. We recommend this approach is adopted whenever possible as it makes sure that your needs are known and everyone's expectations are set correctly.

To deliver our customers the most effective modules to meet their business needs we have created a simple form which allows our consultants to logically go through all the areas of our capabilities and ask you relevant questions about what you need to achieve. When the information has been gathered our modules solution team can evaluated your details and design a module which should meet your stated needs. We recommend this approach is adopted whenever possible as it makes sure that your needs are know and everyone's expectations are set correctly.

Specification sheets have been made available for you to download in order that the details of our products can be fully appreciated however if for the application that you are looking to use it in there is additional information that you need that is not on the specification sheet then please do contact one of our consultants.

In most cases we are anticipating that you are needing these details because you have already purchased or are about to purchase one of our products therefore your registration to gain access to this information will not necessarily initiate and sales activity.

Personal Data Policy

General

Wood & Douglas Limited ("W&D") respects the personal data of every individual who visits this website, and of individuals whose personal data is supplied to it in relation to this website. This Personal Data Policy outlines the information W&D may collect and how it may use that information.

W&D does not sell or rent any personal data of its website users to third parties.

We will endeavour to keep your personal information secure and will process your personal information in the manner indicated in this policy, which we may update from time to time. By using this website you agree to any change we make to this policy unless within 14 days of the change being made to this policy you write to us and tell us not to process your personal information in that way.

The FTP site has been made available so that we are able to place files that have been requested by our customers in a safe environment so that they can download them at a time and place to suit their needs. If you have not already made contact with one of our team then you will not find anything on this part of the site.

We know that for over 30 years we have been successfully supporting our customers' needs however this does not mean that because we have achieved this we have stopped trying to improve what we do well.

It is our intension to provide a range of support services that we feel suits the needs of our existing and anticipated new customers however if there is service that you feel we could provide and it is not listed in this section we would appreciate a call from you so that we can discuss if this service can be made available to you.

Although the Wood & Douglas Group is located at three different sites in the south of England, through the wonders of modern technology all are connected as one from a communications point of view.

There is one master telephone and fax number as detailed below. The reception team will route you to your contact as required

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

We have attempted to provide you with enough details on our web site to allow you to open a conversation with one of our consultants about the product or service that you need to enhance your business however we recognise that there are situations where even more details are required before you can be sure that we are the company you need to work with so if you are already registered with us you can download even more information.

Wood & Douglas’ business can be broken down into the following areas:

Wireless Design

focussed on business needs
based on an open and balanced innovative approach
intelligent use of the correct wireless technologies appropriate to the application

Wireless Development

applying the Company’s experience through its research & development team
highly resourced manufacturing based at three specialist sites in the UK
delivering robust and high quality products and services

Wireless Delivery

using a "benefits centric" approach
ensuring capital and operational expenditure payback
liberating applications impossible with cabled solutions

Design, development and delivery of standard products:

Volume manufacturing, using in-house resources, of Wood & Douglas’ range of standard products and accessories including wireless transmitters, receivers, amplifiers and antennas for use in voice, data and video radio systems.

Design, development and delivery of bespoke products:

Providing consultancy to clients regarding how best to use wireless to achieve connectivity goals. The Company will design, develop and manufacture a bespoke solution that matches a mutually identified need.

Manufacture of third party designs:

While the majority of products manufactured are of Wood & Douglas design, the Company also provides manufacturing resources to third parties. Such clients benefit not just from a surface mount manufacturing service with RF test resource but also an objective assessment based on 35 years experience of the suitability of their design for manufacture.

The Orion radio modem combines the needs of a radio data modem with those of a small radio terminal unit (RTU). Data at speeds of up to 19,200 bps are seemlessly passed over the radio connection together with digital and analogue input output lines. This powerful combination dramatically expands the variety of uses the Orion radio modem can be deployed to satisfy.

The SX450G professional transceiver is a miniature high quality, low cost-of-ownership module for data and telemetry transmission applications.

Combining sensitive receiver circuitry with matching 500mW RF transmitter sections, these modules are ideal for short, medium and long range applications. This power level delivers a very effective increase in range performance over lower power wideband devices while balancing the need for battery economy in portable applications.

Frequency control is achieved using modern low noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

These resilient modules not only satisfy EN 300 220 but also the more demanding EN 300 086 specification. This enables the units to be sold throughout Europe for both licensed and unlicensed telemetry, data and voice applications. The modules conform to the RoHS (lead-free) directives. The addition of a suitable modem (Wood & Douglas RSX) will allow EN 300 113 approval to be gained.

For advanced modulation schemes, special versions of this range are available with extended audio characteristics.

The G-Max transceiver is a small, low profile rugged UHF OEM radio transceiver module designed to meet the most stringent environmental conditions.

The G-Max is aimed at the discerning OEM that needs a high-quality, reliable direct PCB mounted module to meet the needs of severe operational environments.

Designed to meet MIL standard vibration and shock specifications, the radio will operate over a wide temperature range while maintaining an exceptional RF performance.

The features of the G-Max, include a synthesiser design that has many power saving modes while still allowing fast off/on switching , making it ideal for portable equipment.

The absence of any audio filtering on either the transmit or the receive interface ports allows OEM’s to benefit from the fastest modulation schemes such as GMSK and 4LFSK.

To further assist high speed operation the receive audio is not gated by the squelch giving the fastest possible recovered audio throughput.

The G-Max is designed to meet ETS 300 086 (when a suitable TX audio filter is added) and ETS 300 113 (when used with an external modem). The audio / data interface is DC coupled providing the optimum interface for all modulation schemes.

The main electronics are powered from a 3.3V DC supply to allow optimum use of available power supplies while the transmitter power amplifier achieves improved efficiency running from a separate 6.2 to 8.2V DC supply.

The T Series modules provide a cost effective, high-quality radio transceiver to exceed North American and equivalent radio telemetry specifications.

Today’s crowded frequency spectrum creates increased potential for both in and out-of band interference. This threat places demand on radio module performance. The T Series modules address this challenge by providing synthesised frequency agility in association with good large-signal handling characteristics.

These modules offer good receiver sensitivity: 2W or 5W RF output and a wide choice of frequency variants. Interface connections are industry based D type and BNC.

The T Series offers on-board channel storage or dynamic external frequency loading, ‘S’ meter output and receiver data recovery circuit.

The engineering integration and attention to detail has ensured the T series offers a radio transceiver at a cost-effective price that will out-perform other low-cost imports to the US market.

The ST range of transmitters are designed to be low-risk, cost-effective building-block modules for high-volume OEM applications requiring radio connection, including use in the 868 to 870MHz pan-European band.

They are intended for use with the matching SR Range receivers (see datasheet 1893 2048). Ideally suited for use in today’s crowded radio telemetry bands, these resilient modules exceed the minimum requirements defined in EN 300 220.

The VHF and UHF transmitter modules deliver up to 100mW RF output power. The 868MHz version is reduced to 25mW to match the recommended plan for this band. Such power levels are more than adequate for short- and medium-range applications.

With careful system engineering this range can extend to 2km or further.

Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

The modules are housed in small lightweight screened enclosures with mounting pins for direct insertion into a customer’s hardware. This electrical screening ensures a family of products complying with current EMC regulations.

The T Series modules provide a cost effective, high-quality radio transceiver to exceed North American and equivalent radio telemetry specifications.

These modules offer good receiver sensitivity: 2W or 5W RF output and a wide choice of frequency variants. Interface connections are industry based D type and BNC.

The T Series offers on-board channel storage or dynamic external frequency loading, ‘S’ meter output and receiver data recovery circuit.

The engineering integration and attention to detail has ensured the T series offers a radio transceiver at a cost-effective price that will out-perform other low-cost imports to the US market.

With careful system engineering this range can extend to 2km or further.

Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

The SR range of receivers are designed to be low-risk, cost-effective building-block modules for high-volume OEM applications requiring radio connection, including use in the 868 to 870MHz pan-European band.

Ideally suited for use in today’s crowded radio telemetry bands, these resilient modules exceed the minimum requirements defined in EN 300 220. The modules are intended for use with the matching ST Range transmitters (see datasheet 1893 2049) for short- and medium-range applications.

With careful system engineering this range can extend to 2km or further.

The receiver modules benefit from excellent sensitivity figures, low current consumption and have both squelch and RSSI facilities.

Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

With careful system engineering this range can extend to 2km or further.

The receiver modules benefit from excellent sensitivity figures, low current consumption and have both squelch and RSSI facilities.

Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

The Orion has a selectable RS-232, RS-422, RS-485 user interface for serial data messaging allowing easy connection for Remote Telemetry Units, and Pan Tilt Zoom camera controllers.

Several options exist for over-air protocol, allowing different options for speed and data link integrity, including a packet protocol.

Addressing allows a network of units to be built up on the same frequency, up to 255 units in each of up to 254 groups, with the facility to broadcast.

With the supplied Wood & Douglas GUI, a capable, fully configurable, master/slave system is possible, including data logging.

Using Store and Forward techniques, an intermediate Orion can act as a repeater thus greatly extending system operational range. Over-air data rate is 19200bps when a 25kHz bandwidth radio module is fitted (9600bps in a 12.5kHz channel).

The Orion can be built in various versions which use the SXn50 or G-MAX series radios. The option exists to specify a version of the Orion with telemetry I/O functions where these are required.

The RSX Series is a family of high speed, intelligent radio modems that offers a high quality, yet cost effective wireless data solution for point to point digital messaging.

The versatile nature of the configurable user interface ensures the modems can be deployed as easily by the non-technical and technical user.

The modems are housed in small rugged metal enclosures with straightforward access to RF and data interfaces via a BNC and D type connector. The modems allow, depending on channel spacing, maximum on-air data rates of 4800 or 9600 baud using GMSK (Gaussian Minimum Shift Keying) modulation. Serial data is passed to the modem via the RS-232 interface at data rates of up to 38400 baud.

To allow flexibility in meeting the individual user’s operational requirements, RSX modems are supplied with proprietary set up software. This allows access to a wide range of configurable parameters including a link test facility and source and destination addressing.

The units operate from an internally selected 7V or 12V external negative earth supply.

Incorporating Wood & Douglas professional range transceivers, the radio modems are multichannel synthesised units operating at either VHF or UHF frequencies and are approved to worldwide standards - EN 300 113 and EN 300 220 radio specifications and EN 300 489 EMC.

The RSX Series is a family of high speed, intelligent radio modems that offers a high quality, yet cost effective wireless data solution for point to point digital messaging.

The versatile nature of the configurable user interface ensures the modems can be deployed as easily by the non-technical and technical user.

The units operate from an internally selected 7V or 12V external negative earth supply.

The RSX Series is a family of high speed, intelligent radio modems that offers a high quality, yet cost effective wireless data solution for point to point digital messaging.

The versatile nature of the configurable user interface ensures the modems can be deployed as easily by the non-technical and technical user.

The units operate from an internally selected 7V or 12V external negative earth supply.

The 200T combines detection of rotational movement using an accurate digital compass and transmission of this data through secure, low cost VHF wireless.

With a long life battery and simple communications set up, the 200T is self calibrating and can be used out of the box. As part of a small works alarm package, 200T RM is used to detect and transmit the rotation of filter arms on biological filters.

The unique digital compass module detects movement through the earth’s magnetic field and will work at any location.

The 200T RM transmits a pulse for each rotation received by a Hub Unit. It combines this information with other alarms and can establish whether loss of rotation is a condition of flow or a true alarm where action is required.

The 200T RM can also be used to replace existing mechanical systems such as proximity switches or mechanical striker plates. It is scalable up to 16 units per site.

On new sites, or sites where cabling is difficult or expensive, 200T RM provides a secure and reliable wireless monitoring process at low cost. A radio health check is performed every five minutes to confirm correct ongoing operation.

The 200T RM provides reliable operation even in difficult terrain or where obstructions might otherwise cause radio problems.

Unlike mechanical methods of monitoring, 200T RM is not affected by environmental factors as it employs a totally non contact operation.

The 200T RM is configured through four simple switch selections and can be deployed out of the box. An accessory kit is available for ease of mounting.

As mentioned elsewhere in this section, the dVMo receiver system consists of two sections, the masthead units and the main receiver and decoder unit.

The main receiver has a tuneable radio frequency input below 1GHz.When operating within this tuning range the masthead device needs to be an amplifier only that has the right amount of gain and a low noise figure. When operating at frequencies above 1GHz the masthead unit is a downconverter assembly which filters the incoming wanted signal and converts this narrow window down to below 1GHz.

In either case the electronics are housed in waterproof highly resilient IP65 enclosures and are phantom powered by the dVMo receiver feeding a DC supply via the coaxial cable feeding up to the masthead.

Because the system is designed for diversity operation, there will be two masthead units deployed in every system installation, either two head amplifiers or two downconverters. For more advanced systems this number could multiply as more receivers are brought into play.

A key aspect of this type of split hardware is that providing the masthead devices are of good quality, low noise figure and sufficient gain, the cable connecting the masthead to the main receiver can be of relatively poor grade for a short run of cable or for a long cable run something of a medium quality. In both cases cost is reduced and absolute system performance is improved.

Once agains this is a highly complex area for design discussion and it is recommended that advice is sought from our experienced Sales support team.

The dVMo-PA-1 W is an amplifier that produces a 1W COFDM output from a standard 100mW dVMo-T drive signal.

When amplifying COFDM signals it is critical to pay careful attention to the linearity of the devices used. Without this the resulting RF envelope will suffer from spectral re-growth which will appear as a widening of the signal and a raising of the noise skirts on either side of the wanted signal.

In extreme cases this can result in complete loss of visible shoulder between the skirts and the wanted signal. In these circumstances the COFDM decoder at the receiver site will be unable to decode data signals being received.

A margin of 8dB to 10dB is required in the rating of any amplifier to ensure that the peak COFDM signals are not limited and hence distorted by the amplifying process. For a 1W COFDM output it is necessary to use a linear amplifier with a 8W to 10W continuous carrier rating.

In addition, there will be severe DC supply and thermal cooling implications to this demand.

The dVMo-PA-1W takes into account these aspects of performance to produce a 1W COFDM output from the standard 100mW dVMo-T drive signal.

The unit will require a robust DC supply with over 5A capability. Supply connection is via a multi-way connector.

The unit is incorporates a heatsink and is convection cooled .

dVMo-R2 / dVMo-MR2 Decoder / Radio Receivers

The dVMo system receiver station consists of a masthead unit close to the antenna and a receiver / demodulator / decoder remotely located. The masthead block will either be a pre-amplifier or a downconverter. Using this distributed architecture allows the best RF performance to be achieved.

The dVMo-R2 is the standard receiver/ demodulator /decoder for the dVMo system. Elsewhere on this site are details of the masthead electronics.

The radio signal from the masthead down to the receiver will fall within the tuning range of the dVMo-R2. The dVMo-R2 will decode this radio signal radio signal and demodulates it to deliver a serial data stream to the integral MPEG2 decoder. The decoder reconstitute the original video, audio and data signals.

All the dVMo receivers have dual diversity facilities. As explained elsewhere in the dVMo section, by having two receivers and comparing the data from each receiver it is possible to chose the optimum packet of data at any instant in time to ensure the best possible performance is achieved.

The dVMo-MR2 is a drop-in replacement for the dVMo-R2, providing enhanced signal-to-noise performance using Maximal Ratio Combining (MRC).

Both dVMo-R2 and dVMo-MR2 have a wide range floating earth power supply making them ideal for both ground and airborne applications.

dVMo-RMP Portable Decoder / Radio Receiver

The dVMo-RMP receiver is a small self contained receiver unit designed for operation where a small compact installation is required. Like the dVMo-MR2, the dVMo-RMP receiver uses dual-diversity MRC techniques for the best performance. The unit contains twin minature down-convertors allowing antennas to be directly connected to the rear panel or a limited remote distance providing cable losses are not too great.

Control of the dVMo-MRP is via two switches and twin 7 segment displays located on the front panel. The display shows which of the 10 possible operational memories or 'profiles' is currently selected. The profile can be changed using the buttons. Other facilities include the ability to mute (switch off) the front panel video display outputs and also to display the Received Signal Strength Indication (RSSI) on the video monitor screen or as an indication on each of the 7 segment displays.

An optional enhanced security version of the dVMo-RMP is available to bona fide law enforcement agencies. dVMo-RDR The dVMo-RDR is the matching fast deployment receiver for use with the dVMo-RDT.

-T Integrated Encoder / Radio Transmitter

Built into a milled heavy-duty enclosure and weatherproof to the IP65 rating, it provides 100mW RF output power. The RF output power may be further increased using the range of dVMo-PA power amplifiers.

The dVMo transmitter provides the encoding, the transmission hardware and software. It encodes and transmits a single video input, two audio inputs and an RS232 data stream with a speed of 38400 baud. All these information sources are combined into a single data stream, which is called the “transport stream”, which is transmitted over air. Each of these component parts in the transport stream is identified by the software so that they can be easily separated back out at the receiver location.

dVMo-TP Manpack Portable Encoder / RadioTransmitter

The dVMo-TP Portable Transmitter has similar functionality to the standard dVMo-T, but is presented in a form that can easily be carried or worn about the person needing only a battery power source to operate.

The facilities and options of the dVMo-TP are very similar to those offered by the dVMo-T.

dVMo-TML UAV Deployable Encoder / RadioTransmitter

Designed for use in UAV (Unmanned Aeronautical Vehicles), the dVMo-TML is similar to the dVMo-TP but has reduced metalwork and heatsinking depending instead for this by being bolted down to an external heatsink in the host platform.

dVMo-RDT Rapid Deployment Encoder / Radio Transmitter

A fully integrated 'drop and go' dVMo installation for fast deployment video surveillance.

What is dVMo ?

dVMo uses advanced COFDM encoding techniques making it highly robust and resilient with excellent spectral efficiency. COFDM provides a dramatically enhanced link performance in the presence of multipath signals making it highly suited to mobile applications.

Better Than Analogue !

Analogue video links, usually using frequency modulated (FM) transmission techniques have always suffered from the effects of multipath interference. This is the problem whereby the transmitted signal is scattered off objects en route to the receiver site and as a result arrives via slightly different radio paths at the receiver antenna. In certain conditions these scattered signals can cancel each other out. This has the effect of degrading what might well have been a good quality transmitted video image.

There is a further disadvantage with traditional frequency modulated analogue links in that they are also very spectrally inefficient requiring some 25MHz or more of spectrum.

While the 100mW RF output may seem low, the enhanced performance over a conventional analogue link at the same power output will be most noticeable. The W&D team has produced a video CD of tests at 100mW and 1W at S Band which clearly shows the difference between the two modes. A copy of this CD which runs on PC platforms can be requested from our sales team.

How is this done ?

The dVMo uses modern technology to overcome both of these problems.

Use of a COFDM modulation scheme with a MPEG CODEC results in a multipath immune spectrally efficient signal of only 7MHz occupied bandwidth. The coding process thrives on multipath situations making mobile camera operation a delight to watch.

Diversity Operation

Because the signals transmitted are in digital format it is much easier to compare and check the quality of the received video when in a data format. By using two receivers and comparing the data from each one, the optimum video data packet at any one time can be chosen and processed ensuring the optimum performance from the radio link. This technique can be expanded to three or more receivers and is known as diversity reception.

MPEG2 Encoding

The MPEG encoding module in the dVMo uses a protocol that is a dedicated derivative of the DVB-T standard. It converts the analogue video images into a serial data stream. The encoder card has the facility to multiplex further external streams with the on board encoded video. This allows multiple videos to be carried down a single radio dVMo video link.

Encryption

Digital encoding naturally adds a level of security to what is being transmitted and will stop an accidental interception of the transmission revealing what was in the video. For clients needing a more formal higher level of digital scrambling, encryption to AES128 or AES256 is available.

The Impact of Amplifiers

Because of the complex nature of the COFDM signal, any amplification of the modulated signal must be very linear in its characteristics. Power amplifiers to boost the dVMo transmitter souces 100mW output will be relatively inefficient and therefore get hot and be bulky.

Heat and power consumption are important considerations when deploying dVMo hardware so users, particularly in covert applications or on UAV platforms, must consider the optimum system configuration to achieve physical range, battery economy etc. The W&D sales team can give support and advice on these aspects.

Frequency Options

The dVMo is available in various banded versions allowing coverage of the radio frequency spectrum from 300MHz to 6GHz If as a client your application requires a full command and control system, then the dVMo can be integrated with W&D radio telemetry hardware. Please discuss your requirements with our sales team.

The 300T and 300R provide an effective monitoring system designed to use wireless communications directly from a number of sensors back to a central receiver station.

The 300T is simply attached to a field signal and reports directly to a 300R unit that is centrally located to receive transmissions and store these in a database. The information can be exported via a serial link for connection to PLCs, SCADA or DCS systems.

There are an almost limitless number of applications for the 300T and 300R system. Typical applications are in utilities (water distribution monitoring, reservoir overflow monitoring, gas holder seal monitoring) and within industry to monitor machinery, switches and temperatures.

With a battery life of up to 10 years and self configuration, the 300T and 300R system is a “fit and forget” monitoring solution that is supplied in die cast aluminium housing and can be prepared for extreme variations in temperature or weather.

In addition to transmitting status signals, the 300T also delivers information about its set up, parameter settings and health status in each message. This allows 300R to automatically reconfigure itself to accommodate changes made by 300T (such as alarm settings and transmission rates).

300T can be configured to transmit at intervals from as little as 30 seconds up to once every 12 hours. The effective range is up to 1000 metres.

The 300T/300R system enables effective monitoring and measurement to be conducted on any site where cabling is not a realistic option or at remote sites where regular maintenance is difficult.

The Insight system allows high-quality CCTV pictures to be relayed using wireless links operating in the licence-exempt 5GHz band. The link also carries mono audio and an alarm signal. Radiated RF power output from the transmitter antenna is 14dBm and seven channel frequencies can be used. The wireless links should be installed with a line-of-sight path between units where possible, when they can achieve a range of up to 1km (subject to survey). The basic system is made up of a transmitter and receiver pair for masthead mounting. The Insight V Masthead Unit combines the receiver or transmitter electronics with a high-gain antenna, housed in an IP65 weatherproof enclosure. Transmit and receive units are of identical appearance, and are distinguished by a yellow TRANSMITTER or blue RECEIVER label on the rear face. Where access to the Masthead units may be a problem for installation and support, a Base unit can be supplied which contains a mains power unit and the ability to control the frequency and view the receiver Received Signal Strength (RSSI) remotely to check that the system is operational and working correctly. The RX Base Unit is available in versions which will serve one, two or three RX Masthead Units from a single Base unit with a single mains input. A further upgrade is available to provide a reverse telemetry link for CCTV (PTZ) control using the Wood & Douglas Orion modem. TX Base Units are fitted with the modem, and an additional Control Base Unit is provided. Range is at least that of the video signal.

The Insight DVT from Wood & Douglas provides wireless transmission of high resolution, full frame rate, video for CCTV applications, as well as telemetry control, audio and alarm.

The standard link comprises a pair of transceivers mounted in directional planar antennae, plus a pair of interface modules, each comprising a video encoder/decoder and PSU in a high-quality weatherproof enclosure.

The interface module enclosures also allow the option of mounting a second encoder/decoder module. An auxiliary ethernet connection is provided for connection to a secondary interface module, enabling multiple camera transmission over a single transmission link. Multiple Insight DVT wireless transmission links may be used in a variety of configurations including multipoint and repeater, providing a flexible solution for larger systems and more demanding application requirements.

The Insight DVT from Wood & Douglas provides wireless transmission of high resolution, full frame rate, video for CCTV applications, as well as telemetry control, audio and alarm.

The Trio gives studio floor crew a compact discreet transmitter unit for gallery communications.

The Trio uses narrow band FM techniques to provide high quality audio while remaining spectrally efficient. By satisfying European ETS 300 086 mobile radio specification, Trio will technically comply with the most demanding of type approval requirements anywhere in the world. This aspect together with frequency agility, small size, excellent audio quality and extended battery life all contribute to make the Trio the natural choice for professional studio wireless intercom applications.

Users can choose the internal electret microphone and front panel push to talk switch (PTT) or an externally keyed microphone connected via a standard 3.5mm stereo jack connector.

Operating from a pair of AA batteries, Trio will give an extended battery life of over 10 hours under normal operating circumstances. A visual low battery indicator is just one of the many facilities designed as standard into these rugged units.

Using advanced synthesised frequency control techniques, Trio operates in the 400 to 900 MHz frequency range and has four non-volatile internally stored channels. These can be readily reprogrammed using standard PC software.

When used in conjunction with a Solo receiver, the combination provides a traditional ‘twin belt pack’ mode of working in contrast to the Duo duplex transceiver. Both configurations will require a Symphony base station to complete the installation.

The Solo is a discreet wireless receiver that provides on screen talent with a clear means of listening to commands and cues from programme producers.

With a battery life of more than 10 hours from one pair of AA batteries, Solo provides high quality audio in a compact and robust unit. A combined visual and audible low battery indication is included in the product.

Audio output is via a 3.5mm stereo jack, ideally suited to a wide range of headsets.

Solo uses narrowband FM techniques to provide clear and crisp audio in a studio environment, reducing the cost of spectrum and offering multi-frequency operation.

The Solo complies to the European RTS 300 086 wireless radio specification and complies with the most demanding type approval requirements across the world. Combining frequency agility, compact form factor, excellent audio quality and extended battery life, the Solo is part of a range of audio products that are the de facto standard for professional broadcasters around the world. Customers include major news organisations and premier broadcasters across the world.

In service, the Solo is used with a Symphony duplex base station, providing a complete end to end solution for broadcast studios.

The Duo is a discreet wireless intercom that provides professional studio floor crew with an effective means to communicate.

In use Duo requires an operator worn headset and boom microphone assembly with integral push to talk (PTT) capability. A secondary PTT switch is provided on Duo’s front panel. With a battery life of more than 10 hours from one pair of AA batteries, the Duo provides high- quality audio in a compact and robust unit. A combined visual and audible low battery indication is included in the product. Audio output is via a 3.5mm stereo jack, enabling studio floor crew to use Duo with their favourite headset. Duo uses narrowband FM techniques to provide clear and crisp audio in a studio environment, reducing the cost of spectrum and offering multi-frequency operation.

The Duo complies to the European RTS 300 086 wireless radio specification. It also complies with demanding type approval requirements across the world.

Combining frequency agility, compact form factor, excellent audio quality and extended battery life, Duo is part of a range of audio products that are the de facto standard for professional broadcasters around the world.

Customers include major news organisations and premier broadcasters. Duo operates in the 400 to 900MHz frequency range and has four non-volatile internally stored channels. These can be reprogrammed using standard PC software.

Duo delivers 50mW RF output power, more than enough for effective operation in the largest studio complex. For smaller working areas, the power can be reduced.

The Symphony is a dedicated solution to studio wireless intercom needs, providing broadcasters with a wireless intercom duplex base station which meets the demands of both the studio and an outside broadcast vehicle.

Symphony meets and exceeds broadcast industry demands for low distortion, high quality audio that reduces operator fatigue.

Using advanced synthesiser frequency control techniques, Symphony is available in versions across the 400 to 900MHz range providing up to 3W maximum RF output and 8 stored channels. These are selectable via the four button front panel display or from an external source via the rear panel ancillary connector. New frequencies are easily reprogrammed into memory using PC software.

Audio interfacing from the unit into the studio four wire circuit is via industry-standard XLR connectors.

The Symphony is housed in a compact 1U 19 inch rack with options for either one or two aerials working with the duplexing filter internal to the rack. Operation can be from AC or DC power sources with auto revert to DC if there is an AC failure.

A standalone product qualified to ETS 300 086, and suitable for a range of professional low power duplex base station applications both inside and outside the broadcast industry; the Symphony has been conceived to be used with Wood & Douglas broadcast products including the Solo, Duo and Trio.

Where licensing authorities demand it, the Symphony can be fitted with an optional internal transmitter isolator.

Symphony meets and exceeds broadcast industry demands for low distortion, high quality audio that reduces operator fatigue.

Audio interfacing from the unit into the studio four wire circuit is via industry-standard XLR connectors.

Where licensing authorities demand it, the Symphony can be fitted with an optional internal transmitter isolator

Symphony meets and exceeds broadcast industry demands for low distortion, high quality audio that reduces operator fatigue.

Audio interfacing from the unit into the studio four wire circuit is via industry-standard XLR connectors.

Where licensing authorities demand it, the Symphony can be fitted with an optional internal transmitter isolator

The MDS SD4 is a licensed narrowband radio in 400MHz. With a software-defined modem and an optimised hardware platform, this radio is the ideal platform for current and future deployments of SCADA and telemetry systems for monitoring and control.

Integrated serial and Ethernet* interfaces provide a path for future equipment connectivity needs. Lower power consumption reduces the size of batteries and solar panels. Extended range supports lower overall infrastructure costs. The wide frequency plan reduces the number of spares required to support a system.

Remote management software simplifies maintenance tasks and reduces the cost of managing the network infrastructure. It also provides a non-intrusive means of maintenance and link monitoring.

With hardened industrial specs like a wider temperature range of operation, the MDS SD4 meets the stringent environmental requirements for mission- critical applications. This product is available for use in Class I, Division 2, Groups A, B, C & D hazardous locations.**

The MDS SD4 is configured as a master station or remote radio. It can operate as a half-duplex or simplex radio. Duplex frequency split is configurable via software, providing a more flexible radio that can be used in different scenarios. Remote network management and diagnostics are available.

Multiple interfaces accommodate different connectivity needs with the same unit without the need of external equipment. 400MHz operation with FCC and ETSI approvals ensure applicability around the world. Software defined operation minimises administration and maintenance costs.

The CMD500 is a range of high-performance radio modems for telemetry and telecontrol that provide a reliable and effective solution to remote monitoring and control requirements.

The CMD500 series has been designed to meet and exceed all of the ETSI and EMC specifications recognised throughout Europe and many other parts of the world.

The CMD500 has a separate programming port (RJ 11) to enable easy accessibility for diagnostics and programming. The modems can be programmed using the WIN 500 PC-based programming package. Standard storage and printing features of unit configuration ensure easy system documentation.

The CMD500 supports operation over a wide 15MHz range for each tuning band, with bands ranging from 400-475MHz. Channels can be set up during initial programming and subsequently selected via the diagnostic interface.

At the heart of CMD500 is an advanced surface mount radio module, designed and manufactured in the UK. Robust and flexible, the radio can operate in both licensed (ETS 300-113) or licence exempt (ETS 300-220) applications.

The CMD500 radio modems are suitable for almost any telemetry or telecontrol applications, where reliability and ease of use are of paramount importance.

Applications include point to point radio links, point to multi-point radio links, scanning telemetry networks and PLC to PLC links. The CMD500 can provide additional flexibility to industries such as utilities, transport and manufacturing.

The SX range of transceivers are designed to be low-risk, cost-effective building block modules for high volume OEM applications requiring radio connection, including use in the 868-870MHz pan-European band.

Ideally suited for use in today’s crowded radio telemetry bands, these resilient modules exceed the minimum requirements defined in EN 300 220.

The SX100G gives 50mW RF output, the SX500G 100mW and the SX800G is reduced to 25mW. This matches the recommended bandplan at 868MHz.

Such power levels are more than adequate for short- and medium-range applications. With careful system engineering this range could extend to 2km or further.

The receiver sections benefit from excellent sensitivity figures, low current consumption and have both squelch and RSSI facilities.

Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

The modules are housed in small, lightweight screened enclosures with mounting pins for direct insertion into a customer’s hardware. This electrical screening ensures a family of products complying with current EMC regulations.

The T Series modules provide a cost effective, high-quality radio transceiver to exceed North American and equivalent radio telemetry specifications.

These modules offer good receiver sensitivity: 2W or 5W RF output and a wide choice of frequency variants. Interface connections are industry based D type and BNC.

The T Series offers on-board channel storage or dynamic external frequency loading, ‘S’ meter output and receiver data recovery circuit.

The engineering integration and attention to detail has ensured the T series offers a radio transceiver at a cost-effective price that will out-perform other low-cost imports to the US market.

Ideally suited for use in today’s crowded radio telemetry bands, these resilient modules exceed the minimum requirements defined in EN 300 220.

With careful system engineering this range can extend to 2km or further. Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection. The modules are housed in small lightweight screened enclosures with mounting pins for direct insertion into a customer’s hardware. This electrical screening ensures a family of products complying with current EMC regulations.

With careful system engineering this range can extend to 2km or further.

The receiver modules benefit from excellent sensitivity figures, low current consumption and have both squelch and RSSI facilities.

Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

Ideally suited for use in today’s crowded radio telemetry bands, these resilient modules exceed the minimum requirements defined in EN 300 220.

The SX100G gives 50mW RF output, the SX500G 100mW and the SX800G is reduced to 25mW. This matches the recommended bandplan at 868MHz. Such power levels are more than adequate for short- and medium-range applications.

With careful system engineering this range could extend to 2km or further. The receiver sections benefit from excellent sensitivity figures, low current consumption and have both squelch and RSSI facilities.

Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

The Sentinel digital data radios are part of the ScanLink telemetry radio range.

These radios are designed for data transmission applications within Supervisory Control and Data Acquisition (SCADA) systems.

The Sentinel range supports both Point-To-Point and Point-To-Multipoint operation. The Sentinel range consists of the following hardware: ER450 – digital outstation; EB450 – digital base station; EH450 – supplicated base station.

Features across the Sentinel range include full duplex operation and rapid transmit and receipt turnaround time.

Remote diagnostics and a comprehensive network management system (NMS) are included in the Sentinel range. The NMS does not require a break in the operational flow of data, enabling operators to remotely manage the network without impacting data collection and transmission.

The Sentinel embedded data transport protocol uses a proprietary encapsulating technique that employs header information called SIDS. This permits host data to be transported and, uniquely, delivered independent of the formal host protocol.

This enables complex networks using concurrent but different protocols to be delivered as a group call as well as routed delivery mechanisms.

For specific details of the individual products, please refer to the data sheets for EB450, EH450 and ER450.

The Ultima is a flexible module for use in a wide variety of applications requiring monitoring and control where no local communications infrastructure is available. The quad-band GSM/GPRS module is used to communicate with the unit wherever mobile network coverage is available.

The GPRS option allows setup and monitoring of the system via a web page. Simple SMS messages can be used to request the status of the system and to control the outputs. Incoming text messages from the network are forwarded allowing network information such as low credit to be notified.

Connection to a unit is via single 7- way rugged Cannon connector (a mating connector with flying leads is supplied with the unit). Inputs may be digital closure, pulse counting or analogue (5 or 10V DC with an accuracy of 1%). Digital outputs can switch up to 20W.

Alarms may be set on digital and analogue (minimum and maximum) and pulse counting with configurable messages. Low battery can be reported, and where a mains supply is used, it can also be monitored. Up to 10 numbers can be stored for alert SMS messages to ensure that urgent information is communicated.

A sleep mode extends battery life of an unattended unit to a maximum of 12 months (with attached battery pack), yet allows waking for regular automatic transmissions or in response to inputs.

A serial port allows connection to the Orion modem for wireless data collection from remote sites.

The flexible I/O and over-air status monitoring and control make Ultima suitable for battery-powered alarm systems, remote monitoring of water infrastructure, remote metering and remote control of agricultural or industrial systems.

The SXT series transmitters are miniature high-quality modules for data and telemetry transmission.

With up to 500mW RF output power, these modules will find use in short-, medium- and long-range applications.

Such a power level will deliver a very effective increase in range performance over lower power wideband devices while balancing the need for battery economy in portable applications.

The modules are housed in small lightweight screened enclosures with multi-way connection interface for either cable or direct pcb mounting. This electrical screening ensures a family of products complying with current EMC regulations. Frequency control is achieved using modern low-noise PLL synthesiser techniques with non-volatile storage of frequency data, allowing serial and parallel frequency selection.

To satisfy customers using advanced modulation schemes, special versions of this range are available with extended audio characteristics. Ask Wood & Douglas Sales for details.

Designed, manufactured and supported from the UK and benefiting as standard from extensive type approvals, these units provide the OEM with a high-quality, low-cost-of-ownership route into quality radio applications.

The Kestrel radio modem is a configurable product using a fast 19200 baud 4 level FSK modem together with standard Wood & Douglas RF hardware. This flexibility allows customers to match their modem to suit any application, range and budget. The radio section of the modem can be chosen from the SXn50 Professional transceiver range at VHF, UHF and 868MHz. These choices give practical power outputs from 1mW through to 500mW and approvals to either EN 300 220 or EN 300 113.

The operating system is intelligent with a FLASH-based processor for easy upgrading in the future.

The user interface is very flexible and most options can be configured using hardware links. The Kestrel interface allows for RS-232 and TTL as well as a sampling mode.

For high-speed operation, the Forward Error Correction (FEC) can be turned off. Raw 8-bit data can be transmitted, removing the overhead of Start/Stop bits.

Track Watch is a feature rich remote surveillance and monitoring device capable of being covertly deployed over extended periods to combat asset theft.

When its integral sensors detect unauthorised activity within its proximity, the device sends a SMS alert to the deploying agency. This alert can include an optional still image. Track Watch immediately begins to record time and date stamped video footage of the incursion and associated illegal activity.

Track Watch has been designed to be flexible in deployment with the key component parts all having the ability to be remotely deployed from the central control unit.

This allows the battery pack, camera, infra red illuminator and motion sensor to be best positioned to ensure maximum effectiveness without compromising concealment.

Clearly each of these parts needs to be chosen to match the deployment priorities.

The central control unit is simple to program. It allows the user to define the active and dormant periods and associated wake up and shut down delays. A sleep mode reduces battery consumption during periods of no activity. Should the battery begin to run low a SMS message reports this to the user agency.

On arrival to the deployment site, the recorded footage can be downloaded using a WiFi wireless connection to laptop.

Track Watch was initially conceived to counter railway track side copper wire theft. However Track Watch is successfully being used in other situations where there is the potential for theft of property from unattended locations. This has included schools and religious properties.

The W&D support team can advise on deployment issues and the correct choice of peripheral components to ensure a successful operation.

The dVMo-HD system being introduced will enable existing dVMo users to upgrade their present systems with small external hardware modules to give HD capability.

The HD TX and RX modules will use the flexible Transport Stream system interface to provide seamless integration with the wide range of W&D dVMo system components. New customers will be able to take the new style dVMo TX and RX modules with the HD interface embedded in the enclosures.

IP and RS-232 ports are also supplied for configuration and monitoring.

The H.264 video encoding and choice of 720p enables the HD to fit into the most rugged dVMo modes to ensure the best range performance.

Future optional upgrades (requiring a reverse telemetry link to the transmitter) include local recording of stills or video clips at the transmitter, enabling slow download of these stored images over the in-built IP interface, and remotely-controllable module setup parameters. This will allow the over-air encoding to be changed to increase the range of the kit.

HD could be used at shorter operational ranges, with SD being used for long-range viewing, using the standard 8/6 MHz or 2.5MHz occupied bandwidths available on the dVMo system. Two cameras could be used with remote switching between the HDMI and HD-SDI interfaces.

Future optional upgrades at the receiver include an add-on module for providing an SD output copy for local monitoring; video streaming over IP with either a software-based decoder, or a remote hardware decoder.

Wood & Douglas are expanding their range of high quality video delivery products into a new and exciting sector of the market where our rugged physical product together with our robust RF COFDM technology will allow continuous transmission of quality video in even the most difficult terrain. The introduction of a dog-mounted video transmitter will allow access to terrain which until now has been difficult and sometimes impossible for humans to operate in.

dVMo has proved its worth around the world as a high-quality delivery method over an extensive range of frequencies. These frequencies operating with our unrivalled RF implementations have enabled Homeland Security organisations to achieve quality video footage in many of the most inhospitable locations and environments. Implementing this world-leading technology on a dog allows the expansion of video applications into yet another dimension of identification and evidence gathering from operational situations.

In designing this solution we have taken great care to ensure that both parts of the operational team have their needs individually catered for, implementing design changes to suit both the dog and the dog handler. The head harness is of a light but robust design and provides simple adjusters so that the dog can be made comfortable with the equipment, ensuring that it is not distracted in any way from the task in hand. The success of the head harness ensures that any operator viewing the video footage is now presented with the most stable of high quality pictures thus ensuring they can also concentrate on the task in hand with a minimum of viewer fatigue.

As the equipment is part of our solutions portfolio there are a number of ways that it can be deployed and all aspects can be customised to suit the operational needs of our users from the inclusion of extra viewing positions from a single video feed to two-way audio.

Wood & Douglas Limited

Standard Terms and Conditions for the Supply of Goods and Services

1. Definitions

In this document the following words shall have the following meanings:

1.1. "Agreement" means any contract between the Supplier and the Customer for the sale and purchase of the Goods and Services, incorporating these terms and conditions and the terms of any applicable Specification Document;

1.2. "Customer" means the organisation or person who purchases Goods and Services from the Supplier;

1.3. "Goods" means any goods (including any part or parts of them) agreed in the Agreement to be supplied to the Buyer by the Supplier including any software required for use with the goods and set out in the Specification Document;

1.4. "Intellectual Property Rights" means all patents, registered and unregistered designs, copyright, trade marks, know-how and all other forms of intellectual property wherever in the world enforceable;

1.5. "Services" means any services (including any part or parts of them) agreed in the Agreement to be supplied to the Customer by the Supplier and set out in the Specification Document;

1.6. "Specification Document" means a statement of work, quotation or other similar document describing the Goods and Services to be provided by the Supplier.

1.7. "Supplier" means Wood & Douglas Limited of Lattice House, Baughurst. Tadley, Hampshire RG26 5LP United Kingdom;

1.8. "Third Party Goods" means any goods or component parts to be supplied by the Supplier under any Agreement and which are manufactured by a third party.

Returning equipment

To activate a claim under warranty you must first request a Returning Material Authorization (RMA) number from our Sales Support Team. They can be contacted on:

Telephone : +44 (0) 1189811444

E Mail : technicalsupport@woodanddouglas.co.uk

Please note that failure to gain an RMA number may result in delays

Please have the following details available before making your call:

Product number / Type
Product Serial Number
Where purchased (Please note if not purchased directly from Wood & Douglas then you may be requested to contact the company you purchased it from so that they are able to offer you the service commitment they made when selling the unit)

Personal Data

User Data

W&D will not collect any personally identifiable information about the user (e.g., name, address, telephone number or email address ("Personal Data")) through this website unless the user has provided it voluntarily. Your supply of Personal Data indicates your consent to W&D's use of such Personal Data in accordance with this Personal Data Policy or as otherwise expressly permitted by you from time to time. Users are advised that should they choose to provide information, the security of information transmitted over the Internet cannot be assured.

If you contact us by email or telephone we will ask for or take personal information about you, and will use this personal data to respond to your communication.

Subject to the restrictions on use of personal data which W&D observes in accordance with this Personal Data Policy, any communication or material transmitted to the website by email or otherwise, including any questions, comments, suggestions or similar type of information is, and will be treated, as non-confidential and non-proprietary. Any such information transmitted or posted may be used by W&D for any purpose, including, but not limited to, marketing, reproduction, disclosure, transmission, publication, broadcast and posting.

Surface Mount Technician

Having recently opened our new SMT facility we need additional staff to operate and programme the machines.

If you have experience and working knowledge of surface mount machines and processes, in particular MyData, we would like to hear from you.

3D Modelling Mechanical Designer

Our highly compact electronic products need to be housed in ruggedised enclosures that are mid tolerance modelled for our CNC milling facility. If you have experience of 3D CAD, a formal mechanical engineering training in drawing practices and a mechanical apprenticeship you may be the person we need. This is a challenging role needing a self motivated innovative thinker to solve spatially difficult assembly problems.

RF Test Engineer

Our products are sold worldwide and have an outstanding reputation for quality and reliability. As an RF test engineer you could be the last person to touch one of these products before it reaches the client. Knowledge and experience in RF test techniques is essential and perhaps a radio based hobby interest.

If you wish to apply for any of the above positions please send your CV to :

jobs@woodanddouglas.co.uk

No Agencies

Previous candidates need not apply

Notice to Recruiters and Agencies:

Wood & Douglas Ltd will not pay any fees for recruitment activities related to the hiring of a candidate unless an agreement has been established between a duly authorized representative of Wood & Douglas Ltd and the recruitment/placement agency and/or firm prior to the submission of the candidate.

In the situation of receiving unsolicited CV’s from a recruitment/placement agency and/or firm Wood & Douglas Ltd explicitly reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruitment/ placement agency and/or firm where

a) no request has been made by Wood & Douglas Ltd for such CV’s,

b) prior authorisation has not been given to send such CV’s to Wood & Douglas Ltd

c) there is no signed agreement between Wood & Douglas Ltd and the recruiter/agency

If a request has been made or an agreement is in place CV’s should be sent to the HR Department.

Agencies who persistently send CV’s to other members of Wood & Douglas Ltd will be subject to the above and subsequently blocked at our server.

The SX150G professional transceiver is a miniature high quality, low cost-of-ownership module for data and telemetry transmission applications.

Frequency control is achieved using modern low noise PLL synthesiser techniques with non-volatile storage of frequency data allowing serial and parallel frequency selection.

For advanced modulation schemes, special versions of this range are available with extended audio characteristics.

Q: How do I reprogram the frequencies in my Solo, Duo or Trio talkback units?

A: These talkback units are reprogrammed using our Talkback GUI and the appropriate programming dongle cable. The latest version of the talkback GUI is v3.04.04 and is available to download from the Support pages on this website (after user registration).

These programming cables are available to buy:

SOLO programming dongle cable: 01136 1404 A

DUO programming dongle cable: 01136 1402 A

TRIO programming cable: 01136 1403 A

Note that these cables have active electronics in the connector shell. They are not just straight-through wired connections.

The SOLO, DUO and TRIO units can be reprogrammed to new frequencies within +/- 2MHz of the factory set frequencies. If an incorrect frequency is programmed, the LEDs on the top of the talkback unit will flash to indicate an ‘out of lock’ condition. You will need to reprogram the unit again with the correct frequencies

If the new required frequencies are more than +/-2MHz away from the original channel frequencies, please contact W&D tech support for advice. A factory retune may be possible.

2.General

2.1. These terms and conditions shall apply to the Agreement to the exclusion of all other terms and conditions.

2.2. No order placed by the Customer shall be deemed to be accepted until the Supplier has submitted to the Customer a Specification Document which shall specify the Goods and Services to be supplied and the price payable. The Customer shall notify the Supplier immediately if the Customer does not agree with the contents of the Specification Document. All Specification Documents shall be subject to these terms and conditions.

2.3. No variation in these terms and conditions shall be accepted by the Supplier unless submitted by the Customer and agreed in writing by the Supplier.

2.4. The terms and conditions in this document shall take precedence over any other terms and conditions submitted by the Customer regardless of circumstances or conflict. The placing of a purchase order or acceptance by a Customer of a Specification Document shall be deemed as unequivocal acceptance of these terms and conditions.

2.5. The Supplier shall use all reasonable endeavours to complete the Services within estimated time frames but time shall not be of the essence in the performance of any Services.

Wood & Douglas developed its brand by creating high quality professional radio products. The company created self build kits that helped grow amateur radio beyond the technically gifted, to a wider audience and set the standard for quality and professionalism in the market.
Wood & Douglas set the standard for professional broadcast equipment by developing the first range of wireless products purpose built for the broadcast industry. The company created wireless talkback and ‘radio reporter to studio’ systems as far back as 1985.
In 1989, Wood & Douglas designed synthesised radio receivers that were eight times smaller than anything available on the market at that time. These products delivering much lower power consumption, enabled new applications that had not previously been possible, such as the belly pack radio‘s used by Control Chief for controlling train shunting in the USA. Wood & Douglas‘ commitment to miniaturisation and environmentally friendly power consumption in wireless continues today.
The launch of Wood & Douglas‘ Scanlink range of products in 1992 provided the Utilities market with the first integrated wireless communications solution, replacing a collection of disparate products, instantly increasing reliability and, at the same time, reducing cost.
Wood & Douglas developed its Automatic Identification Systems (AIS) in 2000 to identify maritime vessels. Featuring a unique analogue radio transceiver, the product delivered reduced power consumption allied with vastly improved RF performance.
In the achievement of standards compliance in 2006, Wood & Douglas demonstrated for the first time that is was possible to convert standard chip radio designs to meet Class 1 standards, delivering highly cost effective yet totally reliable wireless solutions to the Healthcare market.
In 2006, Wood & Douglas overcame obstacles such as water and distance (both renowned for badly affecting radio performance) to deliver an 8 Mbps wireless link to vessels over 80kms at sea
Transportation services create vibration, contamination and water hazards for wireless products. In 2007 Wood & Douglas overcame all of these obstacles to deliver one of the largest transportation automation projects in the world.

Warranty returns

Customers with a suspected fault on their equipment should use the RMA procedure by contacting the Sales Support Team to discuss the fault condition to establish if a resolution can be achieved without the need to return the unit.

If a system is deemed faulty by Wood & Douglas Ltd Sales support team an RMA reference number will be issued together with an RMA form. This number will be used as a reference when the product is received and will assist in the efficiency of its return. The system / product should be securely packaged to avoid transit damage and the issued RMA number written clearly in the outside of the box with a copy of the RMA form inside, and returned to:

Wood & Douglas Ltd Lattice House Baughurst Tadley Hants RG26 5LP

Once received the equipment will be booked in then sent for initial bench assessment which will result in the following:

a) In warranty equipment will either be repaired and returned or if not economical to repair then replaced
b) Out of warranty equipment will require a purchase order to cover the initial assessment and we will send you a quotation for the cost of the repair.
c) You may decide not to proceed further, in which case we will return the equipment un-serviced. There will still be a charge for the initial test equipment set-up and investigation effort. Currently £60 per hour.
d) Should it be the case that after six months, no purchase order for the repair has been received, it will be assumed the equipment is no longer required and it will be disposed of.

Where a product becomes obsolete, Wood & Douglas Ltd will replace faulty goods with a product of either equivalent or higher specification than the original part.

Please note that Wood & Douglas Ltd cannot be held responsible for items which are received damaged from transit. Should units arrive damaged they will be treated as an out of warranty repair and the customer notified. The customer will then be required to place an order for the assessment to be made of the returned item. Wood & Douglas Ltd accepts no responsibility for goods, even if signed for, until received into Sales Support department where they are checked and the received condition is confirmed.

3.Price and Payment

3.1. The prices for the supply of Goods and Services are as set out in the Specification Document, although the Supplier reserves the right, by giving notice to the Customer at any time before delivery, to increase the price of the Goods and Services to reflect any increase in the cost to the Supplier which is due to any factor beyond the control of the Supplier.

3.2. Invoicing shall be in Pounds Sterling (GBP) unless detailed otherwise in the Specification Document.

3.3. Prices in the Specification Document shall exclude value added tax, and all costs or charges in relation to packaging, loading, unloading, carriage and insurance all of which amounts the Customer shall pay in addition when it is due to pay for the Goods and/or Services unless stated otherwise in the Specification Document.

3.4. Subject to Customer credit worthiness as assessed by a third party appointed by the Supplier, payment for the Goods and/or Services is due 30 days from the date of the Supplier's invoice.

3.5. When a third party credit rating of the Customer is unacceptable to the Supplier the Supplier shall have the right to request payment prior to shipment of Goods or the provision of Services or at any other time notified to the Customer in writing.

3.6. Third party credit reviews of all Customers takes place on a regular basis. Credit facilities offered to Customers are therefore subject to a pro-rata review process. Credit facilities shall consequentially increase or decrease without notice and credit facilities can also be withdrawn at any time. Prior history of the Customer having a credit facility with the Supplier does not imply an ongoing facility.

3.7. If the Customer is in default of the credit period as specified in Subject to Customer credit worthiness as assessed by a third party appointed by the Supplier, payment for the Goods and/or Services is due 30 days from the date of the Supplier's invoice. or as varied in the Specification Document, the Supplier shall be entitled to charge interest on overdue invoices from the date when payment becomes due from day to day until the date of payment at a rate of 2% per annum above the base rate of the Bank of England. In the event that the Customer’s procedures require that an invoice be submitted against a purchase order prior to payment, the Customer shall be responsible for issuing such purchase order before the Goods and Services are supplied.

3.8. If the Customer is in default of the credit period as specified in Subject to Customer credit worthiness as assessed by a third party appointed by the Supplier, payment for the Goods and/or Services is due 30 days from the date of the Supplier's invoice. or as varied in the Specification Document, the Supplier shall have the right to suspend all further delivery of goods or services until payment of all outstanding amounts has taken place. This shall not affect the Supplier’s rights or imply repudiation of the Customer order for the Goods or Services.

3.9. The Supplier shall have the right to invoice the Customer for its reasonable out-of-pocket expenses incurred as a result of the Customer's default of the 30 day credit period specified in Subject to Customer credit worthiness as assessed by a third party appointed by the Supplier, payment for the Goods and/or Services is due 30 days from the date of the Supplier's invoice. or as varied in the Specification Document.

Additional Information Collected Automatically

In some cases, W&D may automatically (i.e. not via registration) collect technical information when a user connects to the website that is not personally identifiable. Examples of this type of information include the type of Internet browser used, the type of computer operating system used and the domain name of the website from which the link to this website is activated.

Warranty Exceptions

Wood & Douglas Ltd will not authorise the return and repair of any system which been subject to modifications which are made after the purchase of the item by any company other than Wood & Douglas which alter the specification of the unit specification i.e. addition/removal of components without prior written consent from Wood & Douglas Ltd. In the event that you wish to alter the system from the original specification you would need to contact Wood & Douglas Ltd Sales Support team to obtain a log reference for authorization, this number will be needed should you need to make a warranty claim.

Q. The ORION programming cable (01146 0202 A) has an RJ45 to DB9F adaptor. What wiring is inside it?

A. We use RJ45 connectors as readily-available compact interfaces with 8 pins each. A wiring diagram for the programming cable showing the Ethernet cable colours is given on page 33 of the ORION user manual (part no: 1892 1335). The RJ45 to DB9F adaptor allows us to build programming cables quickly in our factory.

Note that the ORION programming cable can be used for serial data connections to PCs. Connecting to other equipment may actually need fewer wires, for example many connections to RTUs etc. can be achieved with just three wires RXD, TXD and GND.

The RJ45 to DB9F adaptor, should you wish to use them rather than soldering a connector, is sold by RS Components (part: 818 700).

4.Specification of the Goods

All Goods shall be required only to conform to the specification in the Specification Document. For the avoidance of doubt no description, specification or illustration contained in any product pamphlet or other sales or marketing literature of the Supplier and no representation written or oral, correspondence or statement shall form part of the Agreement.

5.Delivery

5.1. The date of delivery specified by the Supplier is an estimate only. Time for delivery shall not be of the essence of the contract and the Supplier shall not be liable for any loss, costs, damages, charges or expenses caused directly or indirectly by any delay in the delivery of the Goods. If no dates for delivery are specified, delivery shall be within a reasonable time and any delay shall not entitle the Customer to terminate or rescind the Agreement unless such delay exceeds 180 days.

5.2. All risk in the Goods shall pass to the Customer upon delivery.

Information Placed automatically on the Computer -- 'Cookies'

When viewing this website, some information may be stored on the user's computer. This information will be in the form of a "cookie" or similar file and can help W&D in many ways for instance to improve the content of the website to better match users' interests and preferences. Your access to the website indicates your consent to W&D's use of cookies and use of information gathered from cookies for these purposes. You agree not to erase or block cookies used by W&D on this website.

Channels

If the system / product has been purchased through a Channel (Dealer, Company IT or Integrator) then we recommend that you contact the channel you purchased it from in the first instance.

6.Title

6.1. Title in the Goods shall not pass to the Customer until the Supplier has been paid in full for:-

6.1.1. all Goods supplied to the Customer; and

6.1.2. all other sums which are or which become due to the Supplier from the Customer on any account.

6.2. The Customer shall keep all Goods:

6.2.1. separate from all other goods of the Customer and readily identifiable

(i). as the Supplier's property and

(ii). in relation to the relevant Specification Document or invoice; and

6.2.2. in good condition and insured on the Supplier's behalf for the full price to the reasonable satisfaction of the Supplier until such time as title passes to the Customer.

6.3. The Customer grants the Supplier, its agents and employees an irrevocable licence at any time to enter any premises where the Goods are or may be stored in order to inspect them, or where the Customer's right to possession has terminated, to recover them.

Information Provided By Users

You undertake that any information or data, including personal data relating to third parties, which you supply to this website:

shall be accurate and as comprehensive as reasonably possible;
shall not be false, inaccurate or misleading;
will be updated by you (particularly if it becomes false, inaccurate or misleading) by written notice to us if the information was previously provided by you or on your behalf and is contained in a repository;
shall not be fraudulent or involve the representation of counterfeit or stolen items;
shall not infringe any third party's copyright, patent, trademark, trade secret or other proprietary rights or rights of publicity or privacy;
shall not violate any law, statute, ordinance or regulation (including without limitation those governing export control, consumer protection, unfair competition, antidiscrimination or false advertising);
shall not be defamatory, trade libellous, unlawfully threatening or unlawfully harassing;
shall not be obscene or contain pornography;
shall not contain any viruses or other computer programming routines that may or will damage, detrimentally interfere with, intercept or expropriate any system, data or personal information;
shall not create liability for us or cause us to lose (in whole or in part) the services of our ISPs or other suppliers;
shall not be such as to cause us to violate any applicable law, statute, ordinance or regulation or bring us into disrepute with any professional body, trade organisation, government department or inter-governmental organisation;
without limiting the generality of the foregoing you undertake to obtain the consent of any individual whose personal data you submit to this website.

Next working day on-site warranty

On site visits can only be undertaken if the customer has purchased on-site warranty with the equipment at time of purchase or is willing to pay for a warranty assessment visit in advance of a contract being accepted. Warranty assessment site visits are £750 per day.

To receive a next working day on-site visit for systems / products purchased with on-site warranty, the call must be received by Wood & Douglas Ltd by 12 noon.

Once our Sales Support department has verified the call, an engineer will usually be sent to site next working day to repair the faulty system / product.

Q: I am trying to reprogram my DUO and I cannot read back from it with an attached dongle cable.

A: You may experience difficulties reading back the channel information from an attached DUO if the DUO is within range of its Symphony talkback base unit or is picking up any other signal that is lifting the squelch on the DUO’s receive circuitry. Move to another location away from the Symphony base antenna.

Our programming dongles use the audio circuitry in the talkback units as an interface. In the DUO unit, it is important that the squelch is closed when attempting to reprogram it.

7.Customer’s Obligations

7.1. To enable the Supplier to perform its obligations under this Agreement the Customer shall:

7.1.1. co-operate with the Supplier;

7.1.2. provide the Supplier with any information reasonably required by the Supplier;

7.1.3. obtain all necessary permissions and consents which may be required before the commencement of provision of the Goods and/or Services by the Supplier; and

7.1.4. comply with such other requirements as may be set out in the Specification Document or otherwise agreed between the parties.

7.2. The Customer shall be liable to compensate the Supplier for any costs or expenses incurred by the Supplier as a result of the Customer’s failure to comply with Clause To enable the Supplier to perform its obligations under this Agreement the Customer shall:.

7.3. Without prejudice to any other rights to which the Supplier may be entitled, in the event that the Customer unlawfully terminates or rejects the Goods and Services agreed to in the Specification Document:-

7.3.1. risk in the Goods shall pass to the Customer (including for loss or damage caused by the Supplier's negligence)

7.3.2. the Goods and/or Services shall be deemed to have been delivered;

7.3.3. the Supplier may store the Goods until delivery; and

7.3.4. the Customer shall be required to pay to the Supplier as agreed damages and not as a penalty the full amount of any third party costs to which the Supplier has committed (including, without limitation, storage and insurance) and in respect of cancellations on less than five working days’ written notice the full amount of the Goods and Services contracted for as set out in the Specification Document, and the Customer agrees this is a genuine pre-estimate of the Supplier’s losses in such a case.

For the avoidance of doubt, the Customer’s failure to comply with any obligations under Clause To enable the Supplier to perform its obligations under this Agreement the Customer shall: shall be deemed to be a cancellation of the Goods and Services and subject to the payment of the damages set out in this Clause Without prejudice to any other rights to which the Supplier may be entitled, in the event that the Customer unlawfully terminates or rejects the Goods and Services agreed to in the Specification Document:-.

7.4. In the event that the Customer or any third party, not being a sub-contractor of the Supplier, shall omit or commit anything which prevents or delays the Supplier from undertaking or complying with any of its obligations under this Agreement, then the Supplier shall notify the Customer as soon as possible and:

7.4.1. the Supplier shall have no liability in respect of any delay to the completion of the Agreement;

7.4.2. if applicable, the timetable for completion of the Agreement will be modified accordingly;

7.4.3. the Supplier shall notify the Customer at the same time if it intends to make any claim for additional costs. The Customer undertakes that if the Goods are offered for resale to a third party any Supplier trademarks, labelling or other Supplier identification marks are not removed altered or defaced unless by prior agreement in the Specification Document.

Advance Replacement Warranty

For customers who qualify for an advance replacement, an RMA number is required. This number must then be placed on the outside of the box clearly and the parts suitable packaged so as not to sustain transit damage. If goods are received with transit damage due to insufficient packaging the customer will be charged for the advance replacement received. The customer must ensure that the faulty or incorrect part is ready for collection upon delivery of the advanced item.

Customers fitting the advanced replacement part are responsible for any other fault that occurs as a direct result of this repair and Wood & Douglas Limited will treat any subsequent call as an out of warranty repair which will incur the standard Wood & Douglas Limited Charges. An advance replacement of an item can only be undertaken if the faulty part is boxed and ready for collection upon delivery of the advance replacement.

If the part returned is found to have no fault the customer will be charged for the assessment work done along with carriage

Indemnity

By submitting information, data or materials to the website, each user agrees to indemnify, defend and hold harmless W&D, directors, officers and employees from all damages, costs and expenses, including reasonable lawyer's fees and court costs arising out of all claims, challenges or actions related to your or your employees' or representatives' submission of such information, data or materials, including without limitation, claims for infringement of intellectual property rights, libel and defamation or breach of the Data Protection Act 1998.

Q: What is an antenna ground plane?

A: The antenna system is crucial to getting the best performance from your radio devices. The antenna system is not just the antenna itself but also the coaxial cable and connectors. All parts need to be selected and installed correctly to achieve a good radio performance.

If you are using a simple rubberised whip or helical antenna, it is probably what is called a 1/4wave antenna. A common mistake made with these simple antennas is failing to provide an adequate metal ‘ground plane’.

For example, if you are using a short coaxial patch cable between your radio device and the antenna, you will probably need to provide a ground plane for the antenna to work. Without a metalised ground plane, these antennas cannot radiate their signals correctly and most of your transmit power is reflected back into the transmitter and wasted as dissipated heat.

8.Alterations to the Specification Document

8.1. The parties may at any time mutually agree upon and execute new Specification Documents. Any alterations in the scope of Goods and/or Services to be provided under this Agreement shall be set out in the Specification Document, which shall reflect the changed Goods and/or Services and price and any other terms agreed between the parties.

8.2. The Customer may at any time up to five working days before the date for delivery request alterations to the Specification Document by notice in writing to the Supplier. On receipt of the request for alterations the Supplier shall, within 5 working days or such other period as may be agreed between the parties, advise the Customer by notice in writing of the effect of such alterations, if any, on the price and any other terms already agreed between the parties.

8.3. Where the Supplier gives written notice to the Customer agreeing to perform any alterations on terms different to those already agreed between the parties, the Customer shall, within 5 working days of receipt of such notice or such other period as may be agreed between the parties, advise the Supplier by notice in writing whether or not it wishes the alterations to proceed.

8.4. Where the Supplier gives written notice to the Customer agreeing to perform Services or the provision of Goods on terms different to those already agreed between the parties, and the Customer confirms in writing that it wishes the alterations to proceed on those terms, the Specification Document shall be amended to reflect such alterations and thereafter the Supplier shall perform this Agreement upon the basis of such amended terms.

Repairs under warranty

All repairs are carried out in accordance with our Terms & Conditions of Repair*. All repairs under warranty are subject to the terms of that warranty and, in the event of any conflict between these terms and the terms of the warranty, the terms of the warranty shall prevail.

Disclaimer Notice

General

Liability of Wood & Douglas Limited

The woodanddouglas.co.uk website (the "Site") is provided by Wood & Douglas Limited without any warranties or guarantees. You must bear the risks associated with the use of the Internet.

The Site provides content from other Internet sites or resources and while Wood & Douglas Limited tries to ensure that material included on the Site is correct, reputable and of high quality, it cannot accept responsibility if this is not the case. Wood & Douglas Limited will not be responsible for any errors or omissions or for the results obtained from the use of such information or for any technical problems you may experience with the Site. If Wood & Douglas Limited is informed of any inaccuracies in the material on the Site we will attempt to correct the inaccuracies as soon as we reasonably can.

In particular, we disclaim all liabilities in connection with the following:

incompatibility of the Site with any of your equipment, software or telecommunications links
technical problems including errors or interruptions of the Site
unsuitability, unreliability or inaccuracy of the Site
inadequacy of the Site to meet your requirements

To the full extent allowed by applicable law, you agree that we will not be liable to you/or any third party for any consequential or incidental damages (including but not limited to loss of revenue, loss of profits, loss of anticipated savings, wasted expenditure, loss of privacy and loss of data) or any other indirect, special or punitive damages whatsoever that arise out of or are related to the Site.

Nothing in this Disclaimer Notice shall exclude the liability of Wood & Douglas Limited for personal injury or death caused by its negligence.

All pages and content (c) Wood & Douglas Limited 2007, unless otherwise stated.

9.Warranty

9.1. The Supplier's liability in respect of any defects in material and workmanship in Third Party Goods, shall be limited to passing the Customer the benefit of any guarantee or warranty given by the manufacturer of such Third Party Goods for such period as is given by such manufacturer to the Supplier and subject to the terms of warranty given by such third party manufacturer (details of which can be supplied to the Customer on request provided that:

9.1.1. the manufacturer's warranty does not apply to any Third Party Goods, products or components in them which have been serviced or repaired by any party other than the manufacturer's authorised representative; and

9.1.2. it is the sole responsibility of the Customer to ensure that compliance with the manufacturer's recommended service intervals and other instructions is achieved.

9.1.3. the Customer shall not remove or deface the manufacturer's seals, barcodes and/or serial numbers.

9.2. The Supplier warrants that as from the date of delivery for a period of 12 months the Goods and all their component parts, where applicable, are free from any defects in design, workmanship, construction or materials.

9.3. The Supplier warrants that the Services performed under this Agreement shall be performed using reasonable skill and care, and of a quality conforming to generally accepted industry standards and practices.

9.4. The warranties in The Supplier's liability in respect of any defects in material and workmanship in Third Party Goods, shall be limited to passing the Customer the benefit of any guarantee or warranty given by the manufacturer of such Third Party Goods for such period as is given by such manufacturer to the Supplier and subject to the terms of warranty given by such third party manufacturer (details of which can be supplied to the Customer on request provided that:, The Supplier warrants that as from the date of delivery for a period of 12 months the Goods and all their component parts, where applicable, are free from any defects in design, workmanship, construction or materials. and The Supplier warrants that the Services performed under this Agreement shall be performed using reasonable skill and care, and of a quality conforming to generally accepted industry standards and practices. do not apply in the following circumstances:

9.4.1. where the defect arises from fair wear and tear, wilful damage, negligence or mis-use of the Goods, abnormal usage conditions, failure to follow the Seller's instructions (whether oral or in writing), failure to maintain or service the Goods in accordance with any manufacturer's recommendations, misuse or alteration or repair of the Goods without the Seller's approval;

9.4.2. if the total price for the Goods has not been paid by the due date for payment;

9.4.3. if the Supplier's seals, barcodes and/or serial numbers have been removed; and

9.4.4. to any Goods once sold on by the Customer to a third party.

9.5. A warranty given under The Supplier warrants that as from the date of delivery for a period of 12 months the Goods and all their component parts, where applicable, are free from any defects in design, workmanship, construction or materials. or The Supplier warrants that the Services performed under this Agreement shall be performed using reasonable skill and care, and of a quality conforming to generally accepted industry standards and practices. above shall relate to the relevant Agreement and may not be transferred by the Customer to a third party.

9.6. Except as expressly stated in this Agreement, all warranties whether express or implied, by operation of law or otherwise, are hereby excluded in relation to the Goods and Services to be provided by the Supplier.

9.7. All warranty liability of the Supplier shall be cancelled if it is deemed that the Goods in question have been tampered with, modified or changed in any way subsequent to leaving the Supplier's premises. This shall include modification to the serial identification mark or other identification labelling on the product.

9.8. Where Goods supplied by the Supplier have been incorporated by the Customer into secondary assemblies ("Third Party Assemblies") and the complete Third Party Assembly is returned under a warranty claim, the Supplier shall have the right to charge as appropriate for the time and resources spent in inspecting, extracting or otherwise checking the Goods incorporated into the Third Party Assembly. No liability for consequential damage to any part of the Third Party Assemblies whether physical or electrical will be accepted by the Supplier in these circumstances. There shall be no obligation to produce a working Third Party Assembly or return it to its condition at the time of receipt for inspection on completion of such warranty activity.

9.9. Where Goods are returned in a warranty period there shall be no extension of the original warranty period unless an extension to this period is agreed in writing by both the Customer and the Supplier prior to return to the Supplier.

9.10. The cost of returning the Goods to the Supplier shall be for the Customer's account.

9.11. The cost of returning the Goods to the Customer shall be for the Supplier's account.

9.12. Where any valid claim in respect of any of the Goods which is based on any breach of a warranty as set out in Clause The Supplier's liability in respect of any defects in material and workmanship in Third Party Goods, shall be limited to passing the Customer the benefit of any guarantee or warranty given by the manufacturer of such Third Party Goods for such period as is given by such manufacturer to the Supplier and subject to the terms of warranty given by such third party manufacturer (details of which can be supplied to the Customer on request provided that: or The Supplier warrants that as from the date of delivery for a period of 12 months the Goods and all their component parts, where applicable, are free from any defects in design, workmanship, construction or materials. is notified to the Supplier in accordance with these conditions, the Supplier shall be entitled to repair or replace the Goods (or the part in question) free of charge or, at the Supplier's sole discretion, refund to the Customer, the price of the Goods (or a proportionate part of the price), but this shall be the Customer's sole remedy and the Supplier shall have no further liability to the Customer in this regard. Prior authorisation of the Supplier must be obtained before returning any Goods. The Supplier shall also have the right to specify the method of packing and mode of delivery of such Goods. Where Goods are found to have been supplied in compliance with these Conditions and have been unreasonably returned, the Supplier shall reserve the right to charge an administration fee of up to 20% of the price of the Goods ordered.

9.13. The Supplier reserves the right to decline to repair any Goods returned for repair that are outside the original or any extended warranty period and, where the Goods have been incorporated into a Third Party Assembly, where the Customer has not checked for faults in components of the Third Party Assembly other than the Goods.

9.14. If Goods are accepted for repair by the Supplier which are outside a valid warranty period, the Supplier will endeavour to return the units to original specification and if a new warranty period is requested by the Customer, the Supplier shall be permitted to make a reasonable charge for such a new warranty period. The Supplier reserves the right to request payment prior to such activity taking place and in any case such charge must be paid in full prior to the Goods being returned from the Supplier to the Customer for the warranty to become valid.

Component Returns

Wood & Douglas Limited offer as standard 12 months warranty from date of invoice for all components sold unless otherwise stated.

Please ensure that an RMA request is completed for any suspected faulty components.

If a component is deemed faulty by Wood & Douglas Limited Sales Support team an RMA reference number will be issued. Once issued the product / system should suitably packaged so as not to sustain transit damage. If goods are received with transit damage due to insufficient packaging the customer will be notified before any further action is taken.

The issued RMA number must be written clearly in the outside of the box with a copy of the RMA form inside, and returned to:

10.Indemnification

10.1. The Customer shall indemnify the Supplier against the consequences of all claims made against the Supplier by any third party in respect of defective Goods supplied by the Supplier to the Customer insofar as any such claim exceeds that which the Customer could have successfully claimed against the Supplier.

10.2. If Goods are manufactured to the Customer's design or specification, the Customer warrants that it has all necessary rights to instruct the Supplier to do so, and the Customer will indemnify the Supplier for all claims, damages, losses, costs and liabilities in respect of any claim made against the Supplier that the design or specification infringes, or that the Goods themselves (as a result of such design or specification) infringe or that the use or resale of the Goods infringes any Intellectual Property Rights or other third party rights of whatever nature.

10.3. The Customer shall further indemnify the Supplier against all claims, costs and expenses which the Supplier may incur and which arise, directly or indirectly, from the Customer’s breach of any of its obligations under this Agreement.

WOOD & DOUGLAS LIMITED Lattice House, Baughurst, Tadley, Hampshire, RG26 5LP UK

Once received the component will be booked in, repaired or replaced and returned within 25 working days in most cases.

All monitors warranties are direct with Manufacturers and therefore will be processed through Wood & Douglas.

The ground plane needs to be mechanically in contact with the outer shield of the coax. This is usually achieved by using a bulkhead antenna socket that screws down on to the ground plane.

A useful way of providing a ground plane for plastic enclosures is to use self-adhesive aluminium tape which is available for RS Components, Farnell etc.

11.Limitation of Liability

11.1. Except in respect of death or personal injury due to negligence for which no limit applies, the entire liability of the Supplier to the Customer in respect of any claim whatsoever for breach of this Agreement, whether or not arising out of negligence, shall be limited to the price paid by the Customer for the Agreement to which the claim relates.

11.2. In no event shall the Supplier be liable to the Customer for any loss of business, loss of opportunity or loss of profits or for any other indirect or consequential loss or damage whatsoever. This shall apply even where such a loss was reasonably foreseeable or the Supplier had been made aware of the possibility of the Customer incurring such a loss.

11.3. Nothing in these terms and conditions shall exclude or limit the Supplier’s liability:-

11.3.1. for death or personal injury resulting from the Supplier’s negligence or that of its employees, agents or sub-contractors; or

11.3.2. under the conditions implied by section 12 of the Sale of Goods Act 1979; or

11.3.3. under section 2(3) Consumer Protection Act 1987; or

11.3.4. for any matter for which it would be illegal for the Supplier to exclude or attempt to exclude its liability; or

11.3.5. for fraud or fraudulent misrepresentation.

Extended Warranty

Standard customer warranty is 12 months from dispatch from Wood & Douglas and is subject to section 9 of our terms and conditions of sale.

Warranty can be extended in 12 month increments at the point of purchase up to 60 months under the standard charge structure and beyond 60 months by quotation.

Warranty can be extended after the point of purchase but will be subject the a product / system assessment at £750 per day

12.Termination

Either party may terminate this Agreement forthwith by notice in writing to the other if:

12.1. the other party commits a material breach of this Agreement and, in the case of a breach capable of being remedied, fails to remedy it within 30 calendar days of being given written notice from the other party to do so;

12.2. the other party commits a material breach of this Agreement which cannot be remedied under any circumstances;

12.3. the other party passes a resolution for winding up (other than for the purpose of solvent amalgamation or reconstruction), or a court of competent jurisdiction makes an order to that effect;

12.4. the other party ceases to carry on its business or substantially the whole of its business; or

12.5. the other party is declared insolvent, or convenes a meeting of or makes or proposes to make any arrangement or composition with its creditors; or a liquidator, receiver, administrative receiver, manager, trustee or similar officer is appointed over any of its assets.

System Calibration

Appropriate for installed systems that are not feasible to return to manufacturer for repair.

a. As part of each new system quotation an Systems calibration Contract can be offered. This is an all encompassing contract that provides a combination of our Service offerings as appropriate to the Customer requirements.
b. A key service that we could offer is an annual maintenance visit to the equipment to perform a visual inspection of the condition, performance check to ensure that the equipment is operating at its optimum within specification. During this visit we would also be able to identify items that will need replacement in the near future, e.g. Antennas, feeder cables, batteries.

Note: some larger antennas are ½ wave type. These do not need a ground plane. Feel free to ask W&D sales for advice.

13.Intellectual Property Rights

All Intellectual Property Rights produced from or arising as a result of the performance of this Agreement shall, so far as not already vested, become the absolute property of the Supplier (or its licensors), and the Customer shall do all that is reasonably necessary to ensure that such rights vest in the Supplier (or its licensors) by the execution of appropriate instruments or the making of agreements with third parties.

Responsibilities

Although we make every effort not to lose any information from your hard disk, please ensure all system data is backed up prior to returning hard drives, systems or the engineer-attending site. Wood & Douglas Limited will not be held responsible for any loss of information, program files etc.

Q: Aerials, antennas and antennae? What is the correct terminology?

A: Have a look on-line and you will see that there is considerable debate about the correct terminology, however it is generally accepted that an ‘Aerial’ is a receive-only device and that an ‘Antenna’ is for receiving and transmitting. For example, aerials are used for TV and Radio broadcast reception. For wireless voice, video and data systems, the term most often used is ‘Antenna’.

The correct plural of antenna is antennas.

Antennae are completely different...

14.Software

14.1. If the Supplier provides the Customer with software for use in connection with any Goods or Services, then (in the absence of any specific licence terms to the contrary which apply) the Customer will have a non-exclusive, non-transferable, revocable licence to use such software solely for its own internal use to the extent necessary to use the Service. Such licence shall not entitle the Customer to claim title to, or any ownership interest in, the software (or any derivations or improvements thereto) and the Customer will execute any documentation reasonably required by the Supplier to document the Customer's existing and continued ownership of, or right to, the software.

14.2. The Customer agrees that it will not and will not permit others to:

(i). copy the software except as permitted by the Supplier, except as reasonably required for backup purposes;

(ii). reverse engineer, decompile or disassemble the software save to the extent that it cannot be prohibited from so doing under applicable law;

(iii). sell, lease, license or sub-license the software;

(iv). create, write or develop any derivative software or any other software programme based on the licensed software or any confidential information of the Supplier;

(v). take any action prohibited by the owner of the software.

Charges

No charges are applicable to goods that are within Wood & Douglas Limited warranty period and are deemed to have failed due to electronic or mechanical failure. Any service required outside of normal warranty may require an official purchase order or payment prior to that service being available.

The following charges are applicable to any goods out of the warranty period, or any goods deemed to have failed due to improper handling, misuse, packing or negligence, fluctuation of electric power, air conditioning, humidity control, accidents, abuse, misapplication faulty installation, modification or service by anyone other than Wood & Douglas Limited, or any other by prior authorisation by Wood & Douglas Limited, or damage attributable to other environmental conditions. Charges are subject to variation without notice. A guide to the prevailing charges is as follows:

Inspection and assessment of the returned item: £60.00

Advance replacement 15% of installed base

Next working day on - site warranty 20% of installed base

Extended warranty at purchase 2% of product list price per 12 month extension

Extended warranty after purchase 3% of product list price per 12 month extension

System calibration 20% of systems list value but not less than £750

Site survey £750 per day

Installation £750 per day

Commissioning £750 per day

15.Force Majeure

Neither party shall be liable for any delay or failure to perform any of its obligations if the delay or failure results from events or circumstances outside its reasonable control, including but not limited to acts of God, strikes, lock outs, accidents, war, fire, the act or omission of government, highway authorities or any telecommunications carrier, operator or administration or other competent authority, or the delay or failure in manufacture, production, or supply by third parties of equipment or services, and the party shall be entitled to a reasonable extension of its obligations after notifying the other party of the nature and extent of such events.

16.Independent Contractors

The Supplier and the Customer are contractors independent of each other, and neither has the authority to bind the other to any third party or act in any way as the representative of the other, unless otherwise expressly agreed to in writing by both parties. The Supplier may, in addition to its own employees, engage sub-contractors to provide all or part of the Services being provided to the Customer and such engagement shall not relieve the Supplier of its obligations under this Agreement or any applicable Specification Document.

17.Assignment

17.1. The Customer shall not be entitled to assign its rights or obligations or delegate its duties under this Agreement without the prior written consent of the Supplier.

17.2. The Supplier may assign the benefit of the Agreement or any part of it to any person, firm or company.

On Customer Site

Our Standard Day Rate is £750, which includes all Site Mobilisation and Travelling Allowances. We reserve the right to charge higher fees for extensive Travel Costs (Flights etc.) and for Offshore Visits.

18.Severability

If any provision of this Agreement is held invalid, illegal or unenforceable for any reason by any Court of competent jurisdiction such provision shall be severed and the remainder of the provisions herein shall continue in full force and effect as if this Agreement had been agreed with the invalid illegal or unenforceable provision deemed severable and the remaining provisions of the Agreement and the remainder of such provision shall continue in full force and effect.

19.Waiver

The failure by either party to enforce at any time or for any period any one or more of the Terms and Conditions herein shall not be a waiver of them or of the right at any time subsequently to enforce all Terms and Conditions of this Agreement.

20.Notices

Any notice to be given by either party to the other may be served by email, fax, personal service or by post to the address of the other party given in the Specification Document or such other address as either party may from time to time have communicated to the other in writing, and if sent by email shall unless the contrary is proved be deemed to be received on the day it was sent, if sent by fax shall be deemed to be served on receipt of an error free transmission report, if given by letter shall be deemed to have been served at the time at which the letter was delivered personally or if sent by post shall be deemed to have been delivered 48 hours from the date of posting.

21.Entire Agreement

This Agreement contains the entire agreement between the parties relating to the subject matter and supersedes any previous agreements, arrangements, undertakings or proposals, oral or written. Unless expressly provided elsewhere in this Agreement, this Agreement may be varied only by a document signed by both parties.

22.No Third Party Rights

Nothing in this Agreement is intended to, nor shall it confer any rights on a third party by virtue of the Contracts (Rights of Third Parties) Act 1999.

23.Governing Law and Jurisdiction

This Agreement shall be governed by and construed in accordance with the law of England and the parties hereby submit to the exclusive jurisdiction of the English courts.

Q: How many analogue Insight video links can be used on a small site?

A: Our analogue Insight video links are point-to-point line-of-sight wireless links. It has a direct feed from a PAL video camera. Maximum range is about 500metres and there are seven radio channels that can be selected.

Although there are seven selectable radio channels, it is not necessarily the case that seven links, each on one of the channels can easily be installed with good results. There is some overlap of radio signal into adjacent channels. Up to four analogue Insight links on a site can comfortably work, using channels 1,3,5 and 7.

A useful tip is to mix polarisation of the links. As standard the Insight antennas are set for vertical polarisation. By removing the brackets and reinstalling them 90° rotated, you get an antenna that has horizontal polarisation. There is very good isolation between vertical and horizontal radio waves. Simply changing polarisation like this can affect the signal strength by up to 100 times and this allows the possibility of using those extra skipped channels if more than four Insights are needed on a site.

Return To Base

An Inspection fee of £60.00 is charged plus VAT for any out of warranty inspections. Labour @ £60.00 per hour plus VAT will be charged for any out of warranty repairs done internally along with charges for the parts used.

If components received are no fault found a charge of £60.00 per item along with carriage for the return of the item.

Q: What are the main differences between Insight analogue and digital links?

Our digital Insight links are bi-directional meaning that you can send PTZ commands to a camera as well as receiving digital quality video images.
As analogue signals get weaker, the image on the screen gets noisy with lines and sparklies (random black & white dots). Digital video links maintain the quality of the image down to weaker signal levels and so longer point to point link distances are available with our digital Insight links – up to 2km.
Our digital Insight links are encrypted preventing unauthorised receiving of the video signals. This may be important for certain end-users.
It is possible to combine up to three camera video streams over a single digital Insight point to point link
Digital Insight can be used as repeaters to enhance coverage range.

Summary: Analogue Insight is suitable for simple short-range static camera wireless links. Digital Insight is the choice for more challenging multi-camera systems using PTZ control and requiring wide-area coverage. Site surveys, system design and on-site commissioning help are part of the W&D offering.

Payment

Payment is our standard 30 days from invoice.

Q: I need to link some on/off digital inputs wirelessly across a site. What W&D product should I look at?

A: If the distance is up to 500 metres or so, our 200T-DI and 200R-DO units are a good solution. These operate in the licence-free 173MHz VHF frequency band.

The 200T-DI is a battery-powered, completely sealed transmitter with two digital closing-contact inputs. These are suitable for monitoring alarms, level switches and other on/off devices. The built-in lithium battery has an expected 3-year life before needing replacement. Any detected changes on the digital inputs cause the transmitter to send a corresponding status update.

The 200R-DO is a companion VHF receiver with four relay contact digital outputs. These outputs can be mapped to up to three 200T-DI transmitters on your site and they will mimic any changes in the transmitters’ inputs that get signalled.

In addition to sending input change messages, status transmissions are also made by the 200T-DI every 15 or 60 minutes so that the 200D-DO receiver knows that the radio link is working okay and doesn’t need to alarm, which it can do if no transmissions are being received.

These 200T and 200R units have integral antennas and can easily be pole-mounted at a height to give extended range well over 1km in many environments.

Datasheets are available on this website. Please call or email the W&D sales department to discuss your particular application.

Turn-around time

In-warranty returns: The average turn-around time between receipt and dispatch is 10 working days

Out of Warranty: Once received, the equipment will be booked in. An assessment of the equipment will be undertaken and a quotation for the repair costs raised and sent to you within 10 working days. When a purchase order to proceed is received, the equipment will be serviced and returned within the following 15 working days in most cases.

Q: How can I transfer meter pulses across a site to a central monitoring point?

A: Our 200T-DI and 200R-DO licence-free telemetry units have a pulse signalling mechanism. The battery-powered 200T-DI detects any change of state on its inputs (pulses >1sec duration). The number of ON to OFF transitions on input 1 is recorded as a total pulse count figure. This is part of the message that gets transmitted and picked up by the 200R-DO at the central ‘hub’ location.

At the central hub, the 200R-DO’s relay outputs are pulsed to match the same number of pulses reported by the 200T-DI transmitter. These relay contacts are wired to the central hub RTU.

This functionality gives a fast and economical solution to site-wide pulse count logging applications.

Other

Where a product becomes obsolete, WOOD & DOUGLAS LIMITED will replace faulty goods a product of either equivalent or higher specification of the original part.

If a product is received no fault found, Wood & Douglas Limited would charge £60.00 per item found not to be faulty and will charge for the carriage to return the item. This charge must be paid before the item can be returned or collected.

Sales Support Team are available from 9.00am to 17.00pm Monday to Thursday and 9.00am to 3.00pm on Fridays (excluding Bank Holidays)

Telephone : 0118 981 1444 Email : technicalsupport@WoodandDouglas.co.uk

*Terms and conditions of sales are available under Company

Q: How does the W&D 200T-RM differ from the 200T-DI?

A: Our 200T-DI has two digital inputs suitable for monitoring on/off switches and similar devices. The 200T-RM has a special electronic magnetic compass as part of its internal circuitry.This feature sees the 200T-RM most often used to detect and transmit confirmation of biological tank filter arm rotations in water treatment plants.

The sealed 200T-RM unit has an internal lithium battery that has a 3-year life. Every time a complete 360° rotation is detected, the 200T-RM transmits a pulse on its 173MHz licence-exempt frequency. If the hub receiver fails to pick up regular pulses it alarms to indicate a probable stuck filter arm.

The internal magnetic sensor can also be used to detect opening/closing of metal doors or access hatches without any direct physical connection, only proximity. The 200T-RM is installed close to the metal door or hatch and should it be opened, the detected magnetic field will change and a status update message transmitted.

News

30/01/2012 Wood & Douglas vacanciesClick here

12/01/2012 Fastest dog in the South meets a high tech contenderClick here

05/01/2012 'PAWS' Featured on the BBC News websiteClick here

21/12/2011 Festive GreetingsClick here

Data

We have designed a range of products that will allow you to accurately gather information about your business and then put you in a position where you are able to make key decisions.

View Range

Voice

The development of our range of high quality voice products was based on the delivery of quality sound to our users, as we know if we perform to our best so will they.

View Range

Video

The scope of what is possible over wireless has expanded rapidly. Wood & Douglas is able to offer wireless video products and services that are indistinguishable from high quality HD-quality style broadcasts.

View Range