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Using the Combination Power/Video Connector(s) 

As an alternative to using standard audio and video interconnect cables, 
the VT900-3 transmitter and the VR900-3 receiver each provide a 
combination Power/Video connector on the unit’s rear panel. The pinout 
of these connectors is the same for both transmitter and receiver. 
The pinout of the combination Power/Video/Audio jack, and its mating 
plug (not supplied), is illustrated in Figure 3 and Table 1. Contact Applied 
Wireless, Inc. if you wish to purchase an optional Combination 
Power/Video cable. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Signal Strength Indicator (VR900-3 Receiver) 

The VR900-3 receiver will display the relative strength of the received RF 
signal, by illuminating some or all of the four red Signal Strength LEDs on 
the front panel. The Signal Strength indicator(s) will also illuminate if 
local in-band interference is present. If the Signal Strength LEDs are 
indicating that a strong signal is being received, and yet the video and/or 
audio quality is poor, turn off the transmitter (by unplugging its power 
connector). If the receiver’s Signal Strength LEDs continue to indicate 
reception of a strong signal, changing the channel of operation (on both 
the transmitter and receiver) may improve the results. 

Table 1 - Combination Connector Pinout

Pin Circuit 

DC Power In (+7.5 to +18 volts) 

2 DC 

Ground 

6 Video 

(+) 

3 Video 

Ground 

5 Not 

used 

4 Not 

used 

Figure 3 

Combination Jack 

(on Rear Panel) 

Combination Plug 

(rear view) 

Transmitter Connection Diagram 

Left

Right 

Composite 

Video Output 

Audio Outputs 

Source Device (e.g. DVD Player, camcorder, 
surveillance camera, etc.) 

For maximum range, 

transmitter and antenna must 

be oriented 

vertically.

Rear panel of transmitter 

AC Adaptor 

Summary of Contents for VT900-3A

Page 1: ...ser s Guide Instructions for Installation and Operation 900 MHz Video Transmitter Model VT900 3A 900 MHz Video Receiver Model VR900 3 Long Range Wireless Applications This page intentionally left blan...

Page 2: ...quality color or B W video plus audio reception The transmitter and receiver are housed in small yet rugged aluminum extrusion enclosures AC power converters 12VDC are supplied along with RCA phono t...

Page 3: ...AVR900 3 similar The VT900 3 s video input presents a terminated 75 ohm load to the output of the video source device Accordingly no other device s besides the VT900 3 should be connected to the vide...

Page 4: ...he front panel The Signal Strength indicator s will also illuminate if local in band interference is present If the Signal Strength LEDs are indicating that a strong signal is being received and yet t...

Page 5: ...annel 2 915 MHz Channel 3 923 MHz Video Frequency Response 0 5 4 0 MHz RF Output Power VT900 3A 1 mW 0 dBm Operating Voltage 7 5 to 18VDC Operating Current VT900 3A 65 mA FM Deviation 1V P P input 3 M...

Page 6: ...nergy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a parti...

Page 7: ...s of use of the product 3 Loss of the original purchaser s time LIMITATION OF IMPLIED WARRANTIES This warranty limits AW s liability to the repair or replacement of the product AW makes no express war...

Page 8: ...receiver is working RF Interference Check Signal Level LEDs for activity with Transmitter powered off If activity is present Try a different channel Check equipment operation at a different location...

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