Videowave Wireless Video & Telemetry VTX1394SED & VRX1394SED Enables wireless connection of PTZ and Dome type cameras Licence exempt operation (compliant with R&TTE directive) 15 selectable data channels (UK spec.) Power/video input indication on transmitter Power/carrier signal indication on receiver Signal test facility for video and data channels Compatible with most major telemetry types using RS485 (twisted pair) or RS232 IP67 weatherproof enclosure Optional antennas available for specialist applications and extended range up to 3km. Brief Description The VTX1394SED video transmitter and VRX1394SED video receiver combine the Videowave 1394MHz wireless video transmission system with the RM9600 series radio modem transceiver for remote operation of cameras with telemetry. Units are housed within a weatherproof IP67 enclosure, and both top-plate and bulkhead antenna connections are provided to enable connection to RDTs range of video and data antennas. Bulkhead cable glands are also provided to enable entry to video, data, and mains power connections. Key: Video co-ax RS485 twisted pair VRX1394SED VTX1394SED Radio signal (video) Radio signal (data) Figure 1. Point to point video & telemetry transmission
Connection and Configuration Required connections to the VTX1394SED and VRX1394SED units are as follows: 1) Video in on VTX1394SED / Video out on VRX1394SED. BNC type connector 2a) RS485 telemetry twisted pair. ( Pin 1 = Data-, Pin 2 = Data+, Pin 3 = Gnd) 2b) RS232 telemetry. 9 pin D-type connector. 3) AC mains power. 4a) Data antenna (whip types only) BNC connector. 4b) Data antenna (remote mounting types) N-type connector. 5a) Video antenna (whip or patch types) TNC connector. 5b) Video antenna (remote mounting types) N-type connector. 6) LED. VTX1394SE: Red = power, not transmitting. Green = power and transmitting. VRX1394SE: Red = power, not receiving. Green = power and received carrier above good signal threshold. 7) Digital input/output (optional) Figure 2. VTX1394SED / VRX1394SED Layout & Connections The VTX1394SED and VRX1394SED are supplied with video and data antenna connections made to the enclosure top-plate (4a & 5a on above diagram) for use with whip or patch type antennas. Also included are optional internal connector cables for use with remote mounting antennas that require connection to the enclosure bulkhead (4b & 5b on diagram). Note: When using remote mounting antennas, a minimum distance of 3m should be maintained between the video and data antennas. The Videowave transmitter unit has a bi-colour LED that will illuminate red to indicate that the unit is powered but not transmitting, or green to indicate that the unit is powered and transmitting. As supplied, the transmitter will be set to send a default test signal if no video source is connected. Alternatively the unit may be supplied to special order, set so that it shall not transmit if a video source is not connected. The Videowave receiver unit has a bi-colour LED that will illuminate red to indicate that the unit is powered but no signal is being received or the received carrier signal strength is below the good signal threshold. The LED will illuminate green to indicate that received carrier signal strength is above the good signal threshold. This feature greatly assists installation and system tests, particularly when aligning directional antennas for optimum performance.
The RM9600 radio modem is supplied as standard at the frequency range of 458.525 to 458.925MHz with 15 user selectable channels (UK specification), and 4 selectable levels of Rf power output ranging from 50mW to 500mW (50mW setting is advised for most applications). Configuration of the RM9600 radio modem is required to match the protocols of the telemetry system used, and is easily carried out using the on board configuration switches. For further information, please refer to the RM9600 user manual or the RDT telemetry application note, or consult your supplier for details of compatible telemetry. Optional Digital I/O (Alarm Contact Transmission) The optional digital I/O permits a volt free contact digital signal to be sent bi-directionally across the radio telemetry link. Output of the signal is provided via a changeover relay. This feature is ideal for applications that require the inclusion of remote alarm signalling or control of external devices (e.g. access control, lighting, etc). If the optional digital I/O is required, please add the suffix D1 (1 digital I/O) or D2 (2 digital I/O) after the transmitter and receiver order codes. Antenna Selection Each VTX1394SED and VRX1394SED unit will require connection of 2 different antennas, one for the video channel, and one for the data channel. As standard, units are supplied with 3dB patch antennas for the video transmission, and ½ wave whip type antennas for the data transmission. The video and data channels offer different levels of performance, which is also affected by external factors including antenna location and height, and obstructions in the signal path. RDT offer a wide range of video and data antennas to suit various applications. Details of these and the maximum ranges achievable with each antenna combination may be found in the charts below. A site survey may be required to confirm your antenna requirements, particularly if clear line of sight does not exist between the transmitter and receiver locations. Please refer to the Videowave user manual or contact your supplier for further information on antenna selection and mounting. Antennas for RM9600 radio modem, 458MHz data transmission Type Part Code Length Mounting Requirements Notes Half wave whip ANT0006A 302mm Direct to enclosure top plate Supplied as standard End fed dipole ANT0008-CAB 905mm 50mm dia. pole Antennas for 1394MHz video transmission Type Part Code Length Mounting Requirements Notes Half wave whip ANT0002 159mm Direct to enclosure top plate Supplied as standard End fed dipole ANT0005 600mm 50mm dia. pole 3dB Patch ANT2350 100mm Direct to enclosure Supplied as standard 12dB Patch ANT2351 180mm 50mm dia. pole or wall bracket Wall brkt. (PN. ASS2434) Antenna range chart for RM9600 radio modem (telemetry data transmission). 458MHz Antenna ANT0006A Receiver Antenna ANT0008 Transmitter ANT0006A 800m 2000m Antenna ANT0008 2000m 5000m
Antenna range chart for 1394MHz Videowave wireless video transmission. 1394MHz Antenna Receiver Antenna ANT0002 ANT2350 ANT0005 ANT2351 Transmitter ANT0002 800m 800m 1000m 2000m Antenna ANT2350 800m 800m 1000m 2000m ANT0005 1000m 1000m 1200m 3000m Applications Single & Multiple Camera Transmission Transmission of a single video image is illustrated in figure 1 on page 1. As the Videowave 1394MHz transmitter and receiver are single channel units only one such system may be used on a single site. For details of multiple wireless camera configurations with telemetry please refer to the RDT data sheet for the VTX24xxENCD and VRX24xxENCD 2400MHz wireless video & data transmission units. The 2400MHz units may also be used to enable repeat transmission of a video signal to extend range, or to circumnavigate obstructions that may be situated in a direct path between transmitter and receiver. Remote DVR/Matrix Control The VTX1394SED & VRX1394SED may be used to enable a wireless connection from a remote digital recorder or matrix, to a monitor and control keyboard. This provides a highly cost effective solution for systems where several cameras must be transmitted over a common path, or where a remote master or slave control point is required. An example of this type of configuration is illustrated in figure 3 below. Please contact your supplier for details of compatible equipment and exact configuration requirements. VRX1394SED VTX1394SED Key: Video co-ax RS485 twisted pair Radio signal (video) Radio signal (data) Figure 3. Remote DVR & telemetry control Video & data co-ax
Specifications Video Transmitter & Receiver Video input: 1Vp-p into 75ohm BNC Frequency: 1394MHz Video output: 1Vp-p into 75ohm BNC Frequency stability: +/- 40kHz Pre-emphasis CCIR PAL 405-1 Rf power output: 500mW Operating voltage: 10 to 15V DC (mains PSU included) Local Oscillator: PLL synthesized Protection: Reverse polarity Modulation type: FM Current consumption @ 12V DC: Modulation bandwidth: 4.5MHz VTX 450mA Spurious and harmonics: : to MPT1349 VRX 250mA Good signal threshold (1st green LED on RSSI): -90dBm Antenna connector: 50ohm SMA Power connector to PSU Screw terminal Indicators: VTX Power & TX VRX Power & received signal strength RM9600 Radio Modem Frequency range: 458.525MHz to 458.925MHz (UK spec.) RSSI treshold level: -105dBm at 16k Channel spacing: 25kHz (UK spec.) -110dBm at 8k/4k No. of channels: 15 (UK spec.) Max. bit rate: 16kbps (at 25kHz channel spacing) Transmitter: Modulation: GMSK Rf power output: 50 to 500mW (in 4 steps) Interface baud rate: 150-19.2 Kbaud, adjustable Adj. channel power: -37dBm Parity: Odd, even, or none Freq. tolerance: +/- 1kHz Data buffer: 4 Kbytes Tx, 2 Kbytes Rx FM deviation: +/- 3.5kHz Stop bits: 1 or 2 Receiver: Data bits: 7, 8, or 9 Rf sensitivity: -110dBm for 10 BER Operating voltage: 10.5 to 15V DC (mains PSU included) Intermodulation: -70dB Current consumption: Adj. channel rejection: -70dB Tx (at 500mw): 550mA Digital output relay contact rating (where fitted): Rx: 260mA 5A 250Vac (general use) 5A 30Vdc (resistive load) Mechanical & Environmental Dimensions: Weight: 2.50kg Height (excluding connections and cable glands): 280mm Enclosure: Polycarbonate IP67 rated Width: 190mm Mounting: 4 x 7mm dia. holes at 254mm x 164mm Depth: 130mm Operating temperature: -10 to +55deg C Radio Data Technology Limited 10-11Taber Place Crittall Road Witham Essex CM8 3YP England Telephone: 01376 501255 Fax: 01376 501312 International Tel: +44 1376 501255 Fax: +44 1376 501312 URL: www.radiodata.co.uk Email: sales@radiodata.co.uk A member of the CML Microsystems Plc group