Triax Diagnostic Indications - THOMSON LDK 4502 User Manual

Triax diagnostic indications

Camera test LED (4) flashes red
A red flashing camera test LED (4) indicates an open
triax connection (no camera is connected). Other
indicators of this condition are:
OCP: Triax LED Flashes red
MCP: DIAGNOSE \ TRIAX - OPEN
Menu: Diagnostics \ Communications \
Camera Connected -No
Camera test LED (4) lights continuously (red)
A continuously lighting red camera test LED (4) indicates
a short circuit in the triax connection (or an interrupted
inner core). Other indicators of this condition are:
OCP: Triax LED red (continuously)
MCP: DIAGNOSE \ TRIAX - SHORT
Menu: Diagnostics \ Board Diagnostics \ Power
board \ Triax Status -TSHRT, COPEN
or CSHRT (The interpretation of these
messages is shown below)
COPEN
Indicates a connection between outer and inner
shield or between core and outer shield (when a
camera is not connected).
It also indicates an interruped inner core when both
shields are connected correctly (when a camera is
connected).
Diagnostics
Connected
Connected
Interrupted
User's Guide LDK 4502 - HDTV Camera Base Station
CSHRT
Indicates a short circuit between the core and the
inner shield.
TSHRT
Indicates a short circuit between the inner shield,
the outer shield and the core.
SOPEN
Indicates an open connection in the outer shield
of the Triax cable or connector(s).
Precautions to avoid Triax problems
• Only use triax cable (with three conductors).
• Ensure that triax connectors (camera, CPU and
extension cables) fit snugly into each other.
• Verify that there is no interruption in all three
conductors of the triax cable before deploying
(including extension triax cables).
No Connection
5-3