Technicolor - Thomson LDK 4502 - Manual (Page 57)

Diagnostics User's Guide LDK 4502 - HDTV Camera Base Station 5-3
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)
No Connection
CSHRT
Indicates a short circuit between the core and the
inner shield.
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).
Connected
Connected
Interrupted
SOPEN
Indicates an open connection in the outer shield
of the Triax cable or connector(s).
TSHRT
Indicates a short circuit between the inner shield,
the outer shield and the core.
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).