Page 13
Installation and Operating Instructions
ZR-DC/WBX
TESTING AND COMMISSIONING
MAINS VOLTAGES MAY NOW BE PRESENT. THERE IS A RISK OF INJURY OR DEATH BY ELECTRIC SHOCK.
Check that all connections to your ZR-DC/WBX are correct then switch on the power to your camera, transmitter and ZR-
DC/WBX.
TESTING THE VIDEO AND TELEMETRY RECEPTION
Your ZR-DC/WBX switches to the type of telemetry it first receives when the power is switched on. You can still use the
video connections if you are using twisted-pair telemetry.
The Telemetry and Video Status LED located on the main PCB (see figure 1) is used to check that both the video and
telemetry signals are correct. Correct operation is indicated by a slow regular flash. Other fault conditions are shown
below.
If the video signal level is too low when it arrives at the transmitter then the telemetry can lose synchronisation causing
DATA ERRORS. To remedy this, adjust the video gain and lift potentiometers as shown below.
VIDEO GAIN AND LIFT ADJUSTMENT
Adjustments to the Gain and Lift potentiometers can improve picture quality on the monitor and/or improve coaxial
telemetry reception. VR5 is used to adjust the video Gain and VR6 is used to adjust the video Lift. These are factory set
to 1 V pk-pk. If you have data errors, try adjusting Gain and Lift to improve the picture quality. When your ZR-DC/WBX is
receiving correct telemetry, the Telemetry and Video Status LED will emit a slow regular flash. The location and default
setting of VR5 and VR6 is shown below.
