
GUIDE TO INSTALLATION AND OPERATION
34
| XVP-1801
3.5.5 The
Audio Processing
group
The Audio Processing group provides full audio
processing and delay parameters for the input
embedded or discrete audio channels. These
parameters affect both the output audio channels
(embedded and AES) and the audio channels sent
to the DAP or UAP
companion cards.
Group Detected
sub-section
Status indicators turn green when audio groups 1,
2, 3 or 4 are detected.
Discrete AES Detected
sub-section
Signal presence indicators monitor the presence of
AES inputs. The indicators turn green when AES
input signals are detected. The signal presence
warning color can be configured by the user in the
Alarm Config panel (Sect. 3.5.15)
Signal Presence
sub-section
Signal presence indicators monitors the audio
channels presence and are related to the
Silence
parameters defined in the
Ch XX/Silence
tab (see
details below): the indicator is green when an
active signal is present and configurable when a
silence is detected according to the “no signal” threshold and the channel detection warning. The signal
presence warning color can be configured by the user in the Alarm Config panel (Sect. 3.5.15)
CH 1-4, CH 5-8, CH 9-12 and CH 13-16
Tabs
Each of these tabs controls
Levels
,
Fixed
Delays
and
Silence
detection for four audio
channels; each channel is provided with a set
of controls.
Levels sub-tab
: grouped by pair of channels,
each channel has the following controls:
Level
(slider and input box): Sets the
audio gain from -96 to 12 dB in 0.5 dB
steps. For non-PCM audio, the level
value is overridden to 0 dB.
Mute
(speaker button): Mutes the
selected audio channel
Phase Invert
: When checked, inverts
the selected audio channel phase.
Lock
: “Locks” both channel sliders
together for levels and delay (coarse
only), so that moving one slider
moves the other one as well.
Fixed Delay sub-tab
: although the XVP-1801 automatically matches audio and video throughput timing,
provision is made for the user to insert an audio delay offset from the nominal value, in order to deal with
Figure 3.16
Audio Processing group – CH 1-4 tab
Figure 3.17
Audio Processing group – Fixed Delay sub-tab