Grass Valley M-2100 - Manual (Page 69)

MMCP Installation/Operation Manual 2-45
Audio Controls and Operation
If the desired crosspoint is in the Audio Control subpanel, select the Audio
Only button in the Breakaway subpanel, indicating that this selection is a
breakaway and not an Over. An Over, if present, is dropped.
Audio Breakaway Audio and Embedded Audio Sources
The architecture of the video switching matrix prohibits certain AP audio
breakaway operations (ABA) since a single video switch serves for all APs.
The following rules will be effective in preventing problem ABA break-
aways involving Embedded Audio sources:
■ If an embedded source is selected on either bus (Program or Preset) of
AP 1, then the selection of a non-embedded source on any of
AP 2–4 for that bus will not be restricted.
If, however, an embedded source is selected on AP 1 and an attempt is
made to select another embedded source on any on AP 2–4, this selec-
tion will be denied.
■ If an embedded source is selected as above on AP 1 and a non-
embedded source on any of AP 2–4, and an attempt is made to switch
to an embedded source on this AP on this bus, the switch will be
allowed only if the switch is made to the source already selected on
AP 1.
■ If AP 1 currently is switched to an embedded source and AP 1 selects
another source, than any or all of AP 2–4 that were also switched to this
same embedded source will be switched to the new embedded source.
If any or all of these APs were not delegated to AP 1 control, they will
be so delegated (and show low tally).
■ If the source selected on either bus of AP 1 is not embedded, an attempt
to switch to an embedded source on this bus on any of AP 2–4 will be
honored only if currently no other AP 2–4 selects an embedded source
on this bus.
■ If a transition on AP 1 includes an embedded source on the Program
bus (or also Preset bus if flip-flop is enabled), then these APs will be
included in the transition. If these other APs were not delegated, they
will be unconditionally delegated.
■ If a transition on any of AP 2–4 only (AP selected) is attempted and an
embedded source (as defined above) is involved, and any other AP has
embedded sources selected (as defined above), then this transition will
be denied.