Grass Valley M-2100 - Manual (Page 33)

MMCP Installation/Operation Manual 2-9
Program and Preset Bus Operations
If video and audio monitors have been connected, you can view, hear,
and adjust the Preset source prior to taking it to the Program bus.
The audio level and trim settings that existed on the selected source when
last placed on the Program bus are recalled.
Backup Preset Sources
The M–2100 has the ability to maintain a backup source. A backup source
can be taken to air on the Program bus if the primary source fails.
You may enable another Preset source to act as a backup if you have
checked the
Enable Backup Input Select check box in the MCP form in Configu-
ration Manager. If backup capability has not been enabled, simultaneous
pressing of more than one
PST button results in only the leftmost having
any effect.
If a backup source has been enabled in Configuration Manager, enable a
backup source as follows:
1. Press and hold a PST button (which will tally high) to select the primary
source.
2. Press and release a second PST button to select a backup source (which
will tally high/blinking). If this was the incorrect backup selection,
change the backup crosspoint by holding down the Primary
PST button,
and pressing and releasing another PST button. The first selection will
be replaced by the second.
Pressing and releasing the PST button of a backup source will cause it to be
swapped with the primary married source — the backup source becomes
the primary married source and the previous primary married source
becomes the backup source.
Pressing and releasing the PST button of the primary married source will
cause the backup source to be dropped.
When the Preset source is transitioned to the Program bus (on-air), the
backup source will follow and may be selected manually as a backup if the
original source fails. This is normally done with two identical sources
rolling the same tape or clip.
Program Bus
The Program bus (PGM) is a row of eight source select crosspoint buttons
(
Figure 2-4 on page 2-8 ). Crosspoints assignments are made as described in
Preset Bus on page 2-8 and follow the Preset bus.