FOR-A FA-9500 Operation Manual page 155

 CRC Error Trigger
Parameter
Trigger Set
Duration
* A changeover will not be performed if Changeover is disabled or Video Trigger is disabled
even though CRC Error Trigger is enable.
* CRC Error Trigger also triggers a changeover for SDI input signal loss. If CRC Error
Trigger is enabled and the SDI signal input is lost, a changeover will be performed, even
though SDI Error Trigger is disabled, based on the CRC Error Trigger Duration setting.
* CRC Error Trigger also detects TRS errors in blanking intervals as well as in the active
picture area, while SDI Error Trigger detects them only in the active picture area. A
changeover according to a TRS error in a blanking interval can only be triggered by CRC
Error Trigger.
 Black Video Trigger
Parameter
Trigger Set
Threhold
Duration
* A changeover will not be performed if Changeover is disabled or Video Trigger is disabled
even though Black Video Trigger is enable.
 Audio Trigger
The Changeover Audio Trigger dialog box for detailed settings opens.
Default Setting range
Disable
Disable
Enable
Immediate
Immediate
1 to 100 Frames
Default Setting range
Disable
Disable
Enable
0.0% -7.5 to 30.0％
Immediate
Immediate
1 to 100 Frames
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Description
Enables or disables auto changeover
for SDI video CRC error.
Sets the detected video CRC error
duration required to trigger a
changeover.
* To avoid an unexpected changeover
triggered by a switchover of input
signals via router, set Duration to
longer than 2 frames.
Description
Enables or disables auto changeover
for SDI black signal.
Sets the threshold of average
luminance of one field (of interlaced or
segment frame video) or one frame (of
progressive video) to determine a
black signal.
Sets the detected black signal input
duration required to trigger a
changeover.
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