Crystal Vision
Appendix 1
Diop Mutes
For all DIOP4 channels configured as outputs.
C1-C8
Select to Mute AES output channel.
GPO
The GPO5 and GPO6 outputs are reserved for alarm indication and may
each be assigned to any of the many video and audio alarm conditions.
Video, input groups or Dolby encoding missing will assert an alarm
immediately whereas the silence alarms can be assigned a delay timer
to delay the time after which an alarm is asserted. Note that GPO5 is
triggered by video Ch. A conditions and GPO6 by video Ch. B.
GPO5/GPO6
Set the various conditions that assert GPO5 and GPO6.
Status
On if GPO is asserted. N.B. Visual indication of GPO6 status is provided on the board edge.
Video
Select the input video conditions that assert the GPO. Video Missing, Video Black, Video
Frozen.
De-Embed
/AES
Set the conditions for the incoming de-embedded audio signals or external AES input signals
that assert the GPO.
Missing
Set to assert GPO if a group not embedded or missing.
Silence
Set to assert GPO if a channel pair is silent for the period set by the Alarm
Delay.
Dolby E
Set to assert GPO if a channel pair has Dolby E encoding.
TANDEM 320 User Manual R1.3
59
11 July 2019