Grass Valley M-2100 - Manual (Page 72)

2-48 MMCP Installation/Operation Manual
Section 2 — System Operations
The level associated with an Only source is effective when the Only source
is used as an Over. This level is summed with the ratio attenuation to attain
the final level.
When there is an Over on the Program or Preset bus, adjustment of the Level
control affects the Primary and Over level equally. In order to adjust only
the Primary level, it is necessary to drop the Over while the adjustment is
made.
While adjusting the right and left channels together:
■ If the left and right channels are not the same level, and one of them hits
either the top or bottom limit, additional adjustment will continue to
adjust the channel not yet at the limit until both channels are at this
limit. At this time a chirp alarm sounds.
■ A chirp alarm sounds if the level controls are at their limits and no
further adjustment is possible or allowed.
If this source was not already the selected source it will be so selected. An
Over, if present, will be dropped. If the source is an Over, its ratio will be
set to 50%.
Subject to the conditions of level updating as previously described, the last
level adjust made to a source will be recalled the next time that source is
selected.
Setting Audio Unity Gain
The level of any audio crosspoint on any AP can be set to unity gain (0 dB)
with the following procedure. Be sure to follow the button presses in the
order they are given here.
1. Press and hold the AP button for the AP you wish to delegate.
2. Press and hold the Mode/Function button.
3. Press and hold the crosspoint button on the Preset bus with the audio
you wish to set for at least one second.
The audio gain for this crosspoint will now be set to unity gain (0 dB).
Audio Ratio Control
The Ratio knob ( Figure 2-13 on page 2-41 ) controls the ratio of Over to
Primary audio levels for an Over in the delegated Audio Processor as fol-
lows:
■ When in the center of its adjustment range, there is no attenuation of
either the Primary or Over audio levels.
■ Clockwise rotation attenuates the Primary source.
■ Counter clockwise rotation attenuates the Over source.