Rx100 installation manual V1.17 29 Aug 08.doc Page 9
4. SETUP
DIAGNOSTIC AIDS
Two red LEDs and one Green LED are mounted on-board to give simple system status information. Their
functions are as follows:
Cable LED
Regular Blinking - Telemetry and video signals are OK.
Blinking but mainly ON - No Telemetry from the transmitter.
Blinking but mainly OFF - No video from the camera.
Error LED
On - Telemetry transmission error.
Both LEDs
Off - No power or major PCB fault.
Data LED (Iss PCB 4 onwards only) - Will flash on and off very fast when data
is
being sent to the dome.
Test Link - Is used to confirm correct operation of the
Rx100 and dome and also that the RS485
connection is correct. Shorting the link after the
Rx100 is powered up will cause the dome to pan
left and zoom in. Removing the link will stop the
pan left and will zoom out the lens. This is
dependant on dome type.
All BBV equipment is designed to auto-tune and compensate for any discrepancies in the transmitted telemetry
signal; there are no further adjustments that need to be made.
VIDEO LAUNCH AMPLIFIER AND CABLE LENGTH COMPENSATION
The interface features a video launch amplifier with two variable controls situated close to the BNC connectors:
Lift and Gain. These are pre-adjusted for a cable distance of 500m of CT125, and are adjustable to compensate
for video detail or signal losses if and when longer or shorter cable lengths are used to connect the telemetry
transmitter to the interface.
Fig. 3 Launch Amplifier
The purpose of each control is:
GAIN varies the overall signal level.
LIFT boosts the high frequency component of the video
signal. If the high frequency component is too low, picture
appears ‘washed out’ and lacking detail.
Default position adjusted for 500M of CT125.
For shorter cable lengths, turn the Gain control anti-clockwise until 1V p-p is present at the telemetry
transmitter. For longer cable lengths, turn the Gain control clockwise until 1V p-p is present at the telemetry
transmitter.
TELEMETRY
CAMERA
GAIN
LIFT
Video
from
dome
Video
to
transmitter
HF Lift
Gain
