Specifications

7700/7800 MultiFrame Manual
7700ACO2-HD Dual HD/SD-SDI Smart Automatic Changeover
Revision 1.0 Page - 31
5.8.2. Picture Noise Level
NL11/NL12
This parameter sets the approximate level of noise expected in the video
signal feed, it is used by the freeze detect feature to distinguish motion
from background noise on top of a video feed.
As a guide, the range of options available from min to max is:
1 = digital freeze (no noise on top of frozen picture)
10 = 40 dB SNR
1 to 10 (9)
5.8.3. Picture Freeze Duration
FD11/FD12
This parameter sets the duration, in number of frames, of video activity
under the picture noise level that is considered a fault.
The range is from 6 to 9998 frames, with the default being 302 frames.
Each one unit value on the card edge is 4 frames
1 to 2499 (75)
5.8.4. Video Error Duration
VD11/VD12
This parameter sets the number for frames of a video error (loss or
TRS/lock on the input) before a video error alarm is raised.
0 to 900 (30)
5.8.5. Audio Over Level
OL11/OL12
This parameter sets the level threshold for an audio over fault.
The range is from -30 to 0 dBFS, with the default being –
6 dBFS. Each
one unit value on the card edge is 0.25 dBFS.
0 to 120 (-24)
5.8.6. Audio Over Duration
OD11/OD12
This parameter sets the number of samples of audio over before an audio
over fault is generated.
3 to 255 (60)
5.8.7. Audio Silence Level
SL11/SL12
This parameter sets the level threshold for an audio silence fault.
The range is from -96 to -20 dBFS, with the default being – 60 dBFS. Each
one unit value on the card edge is 0.25 dBFS.
-384 to -80 (-240)
5.8.8. Audio Silence Duration
SD11/SD12
This parameter sets the number of samples of audio silence before an
audio silence fault is generated.
The range is from 0.5 to 127 seconds. Each one unit value on the card
edge is 0.5 seconds.
1 to 254 (20)