Crystal Vision
The card edge display
TANDEM-110 User Manual R1.8
65
07/07/2010
4.10 Assigning GPI outputs
GPO 5 and GPO 6 can be assigned from Statesman and/or the card-edge controls to signal
an error condition when loss of video, audio or AES reference occurs.
GPO 5 and GPO 6 may be assigned to signal paths as follows:
GPO 5 assignment
GPO 6 assignment
SDI 1 / De-embedder A / Embedder C
SDI 2 / De-embedder B / Embedder D
Immediate alarms
The following signal loss conditions will cause an alarm to be asserted via GPO 5 or GPO
6 irrespective of any user alarm selection:
Alarm signal trigger
Immediate GPO alarm
SDI input loss
Always
Embedded audio insert
input loss
When de-embedder is set to ‘ON’
Primary AES input loss
If DIP2 or DIP2RS fitted
Note:
There is no switch option to flag/mask the immediate alarms above.
The following signal loss conditions will cause an immediate alarm to be asserted via
GPO 5 or GPO 6 provided the alarm has not been ‘masked’ or deselected in Statesman:
Alarm signal trigger
Immediate GPO alarm
Secondary AES input loss
It will be ignored if set to ‘mask’
AES reference loss
It will be ignored if set to ‘mask’
