Crystal Vision
Control Descriptions
Input missing
Select to assert alarm if video input is missing.
Reference
missing
Select to assert alarm if synchroniser reference is missing.
Video
Black/Frozen
Select to assert alarm if incoming video is at black level or frozen
for the period set by the Alarm Delay menu.
Group 1-4
Missing
Select to assert alarm if any of the embedded audio groups 1-4 are
missing from the video input. (SYN-A 3G only)
Group 1-4
Ch12/34 Silence
Select to assert alarm if any of the embedded audio channel pairs
are silent for the period set by the Alarm Delay menu. (SYN-A 3G
only)
Alarm Delay Time
Set time that an alarm condition must be active before triggering an alarm.
Video Black
Set the period between 0 to 40 seconds that the incoming video
must be permanently at black level before asserting GPO5 or GPO6
alarms.
Video Frozen
Set the period between 0 to 40 seconds that the incoming video
must be permanently frozen (still frame) before asserting GPO5 or
GPO6 alarms.
Audio Silence
Set the period between 0 to 120 seconds that any embedded audio
channel pair must be permanently below -63dBFS before asserting
GPO5 or GPO6 alarms. (SYN-A 3G only)
SYN 3G/SYN-A 3G User Manual R1.3
41
9 July 2019
