Grass Valley 8981FS - Manual (Page 14)

8 8981FS Instruction Manual
8981FS Digital Frame Synchronizer Module
Table 2 describes the output that will be seen under the various possible
input operating modes and conditions.
Table 2. Possible Operating Conditions
Mode Settings
Video Input Condition Reference Input Condition Resulting Output
Auto-freeze Forced Black
Frame Sync
N.A.
1
1 N.A. = Not Affected—output signal is not affected by this mode setting or input under these signal conditions.
N.A.
1
Video input present Valid reference input present Normal output
Off Off No video input present Valid reference input present Passes any input signal
On Off No Video input present Valid reference input present Freeze of last good field
N.A.
1
On No Video input present Valid reference input present Black output
N.A. 1 N.A. 1 Video input present Reference input not present Forced to fixed delay mode
N.A.
1
N.A.
1
Video input present Wrong line standard Reference Bad output signal
2
2 Unusable output signal if video input and reference are not the same line standard.
Delay
N.A. 1 N.A. 1 Video input present N.A. 1 Normal output
Off Off No video input present N.A. 1 Bad output signal 3
3 Output will contain EAV/SAV timing reference signals but they will be far from normal line frequency.
On Off No video input present N.A.
1
Bad output signal
4
4 Output will be Freeze of last good field before input lost but will be far from normal line frequency.
N.A. 1 On No video input present N.A. 1 Bad output signal 5
5 Output will be black video but will be far from normal line frequency.