Grass Valley AAP-1741 - Manual (Page 17)

GUIDE TO INSTALLATION AND OPERATION
AAP-1741 | 13
Config sub-tab: this tab sets the card’s behaviour in
the event of a loss or absence of audio signal.
• A signal absence is declared when the signal
level is lower than the signal threshold
during the selected period. The threshold
can be set through the pull-down box to –72,
-66, -60, -54 or -48 dBFS, the default value is
–60 dBFS.
Delay
: the amount of time for which the signal must
be below the threshold before a signal absence
error is reported can be adjusted from 0 to 255
seconds. The default value is set to 15 s, and an
input box is available to enter a numerical value
directly
3.3.1.2 Audio Processing - CONFIG tab
Audio Proc Input Selection:
when a video card is
present, up to sixteen extracted audio channels
may be present. The pull-down box allows the feed
for the 8 internal processing audio channels 9 to 16
to be selected, either the extracted audio channels
1 to 8 or 9 to 16.
Input 0 dBFS:
the analog to digital conversion ratio
is adjusted with a pull-down box. The possible
values are from 0 to +24 dBu for 0 dBFS (digital full
scale).