Grass Valley M-2100 - Manual (Page 70)

2-46 MMCP Installation/Operation Manual
Section 2 — System Operations
Left and Right (Audio) Buttons
There are two sets of Left and Righ t buttons ( Figure 2-13 on page 2-41 ); one
set for the Program bus and one set for the Preset bus. These buttons have
three functions:
1. Enable Stereo, L-Mono or R-Mono routing,
2. Allow toggling of Left or Right channel phase, and
3. Allow adjustment of the Program or Preset levels.
These buttons are delegated to AP 1 unless an AP has been slaved to AP 1
or selected and held (high tally) with the
AP 2–4 buttons.
Level, mode and ratio settings are copied from the Preset to Program bus
data storage for that source when a transition from Preset to Program is
made for that source. In a similar manner, level, mode and ratio settings are
copied from the Program to the Preset bus data storage for a source, at the
end of a Program to Preset transition of that source, when the buses flip-
flop (if flip-flop mode has been enabled in configuration).
Stereo, L-Mono and R-Mono Modes
There are mode (Stereo, L-Mono or R-Mono) and level settings associated
with each audio source, for each Audio Processor, for each bus (Program
and Preset). Additionally, there are mono mode, left/right phase, level and
ratio (of Over to primary audio) settings associated with each Over source
for each bus, for each Audio Processor. These settings are recalled and exe-
cuted when a source is selected on a bus.
An audio breakaway, or the audio component of a married source, or an
Audio Only, can be Stereo, L-Mono or R-Mono. To enable one of the modes,
select the audio source in the delegated AP and press the Right (R-Mono),
Left (L-Mono) or both buttons (Stereo).
When this source is selected on a bus, the tally of the Left and Right buttons
indicate the selection in effect the last time this source was updated.
L-Mono or R-Mono high tallies the respective button. Stereo mode high
tallies both. At least one of the
Left or Right buttons must always tally high.
The default mode is Stereo.
Phase Inversion
When in Stereo mode, the phase of either the left or the right channel can
be inverted. When inverted, the
Left or Right button will blink off/high tally.
To invert phase of a stereo source on either bus, press and hold the Function
button while pressing and releasing the Left or Right button.
Note that if both the left and right channels are inverted the result is as if
neither were inverted, thus if
Left button flashes indicating inversion and
the Right button is used to invert right channel, that neither the Left and Right