Selecting the Channel of Operation
Referring to Figure 1, use a small flat-blade screwdriver to select the
channel (frequency) on which the transmitter will operate, by aligning the
triangle-shaped pointer (not the screwdriver slot) to the number of the
desired channel. Set the receiver to the matching channel. Channels are as
follows:
Channel 1: 907 MHz
Channel 2: 915 MHz
Channel 3: 923 MHz
Any other setting of the channel selector (0, 4, 5, 6, 7, 8, 9) defaults to
Channel 1.
If two VT900-3 transmitters are to be used simultaneously in a common
area (so as to broadcast two different video sources), set one unit to
Channel 1 and the other unit to Channel 3. It is not advisable to attempt to
use three units simultaneously as co-channel interference may occur.
Connecting Video to the VT900-3
Following the guidelines below, connect composite video source (output
from a camera, for example) to the corresponding composite video input
jacks on the transmitter’s rear panel (refer to Figure 2). Appropriate
shielded cables are supplied with the transmitter for making these
connections.
Figure 1 – VT900-3 Front Panel
(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 video source. If any additional
device(s) must be driven by the source device, a video distribution
amplifier (not supplied) must be used.
Connecting the Receiver’s Video Output
Using the shielded cables provided, connect the receiver’s video output to
the appropriate inputs on the device that is to display, record, or process
the received video signal.
Connecting Power to the Transmitter and Receiver
The VT900-3 and the VR900-3 each require an external power source of
between 7.5 and 18 volts DC. A plug-in power converter (12VDC) is
supplied with each unit.
CAUTION: Do not apply power to the VT900-3 transmitter
unless the supplied antenna is attached to its mating jack
on the front panel. Powering the transmitter without an
antenna may result in failure of the transmitter’s RF
output device and void the warranty.
Insert the power converter’s 2.1mm plug into the DC IN jack on the unit’s
rear panel (refer to Figure 2). Plug each converter into a live 120VAC
outlet. The unit’s red Power indicator LED (on the front panel, refer to
Figure 1) should illuminate.
Figure 2 – VT900-3 Rear Panel
(VR900-3 similar)
