Belden Grass Valley XVP-3901-DPI, Manual To Installation And Operation, Page: 62 / 87

GUIDE TO INSTALLATION AND OPERATION
56 | XVP-3901-DPI
5.10 Reference panel
This group of parameters allows the selection of the
reference to be used by the XVP-3901-DPI.
Use the radio buttons in the Reference Source area to select
from the following options:
•
Auto – this mode selects the first source detected in this
order of priority:
o
External Reference input
o
URS
o
Selected Input signal
•
External – selects the signal connected to the rear-panel
REF IN connector
•
URS (Universal Reference Signal) – selects the internal
reference from the backplane
•
Input – uses the currently-selected input signal.
URS Format – use the radio buttons in the URS Format area
to select whether the URS is OFF, 29.97 Hz or 25 Hz.
•
When URS is OFF, the URS reference format source
cannot be selected, and will also be ignored by the
automatic detection mode.
5.11 A-BUS panel
When companion audio cards such as the DAP and UAP are
used to provide additional audio channels, the A-BUS audio
bus links the installed audio cards and the XVP-3901-DPI.
This panel is used to instruct the XVP-3901-DPI about the
presence of installed audio cards and the system
configuration.
Multiple Card Config sub-section
A1/A2 Presence : Monitors the presence of companion audio
cards installed in the chassis (see section 2.2 XVP-3901-DPI
Installation).
Card System Config: To enable the audio bus, use the pull-
down box and select your system’s configuration. Selecting
Video restricts available audio signals to audio signals on the
video card; Video / A1 or Video / A1 / A2 adds the audio
channels incoming from the installed audio cards that have
been detected.
Figure 5-53 Reference panel
Figure 5-54 A-BUS panel