Grass Valley M-2100 - Manual (Page 50)

2-26 MMCP Installation/Operation Manual
Section 2 — System Operations
Selecting and Transitioning Keys
Any combination of keyers (from 1 to all 4 keyers) can be selected at a time,
to appear on either, or both, the Program and Preset buses. Select a key by
pressing and releasing a
Key Select button ( Key 1 On/Off , Key 2 On/Off , Key 3 On/
Off , Key 4 On/Off shown in Figure 2-11 on page 2-24 ) whose previous tally was
off. Switch tally goes low (selected but not active) or high (selected and
active), depending on the state of the
Next Transition Key button. Pressing and
releasing the same Key Select button again toggles it off. Multiple keys can
be selected/deselected independently of each other.
During the next transition, a key that is selected and active will be transi-
tioned to on-air (if currently off-air), or to off-air (if currently on-air).
Note If the Next Transition Key button is not enabled (tallies off), key transitions
will not occur, and all selected Key Select buttons tally low.
To select a Key, press one of the Key Select buttons.
■ If the key signal is set to be changed by the next transition ( Next Transition
Key button active), the Key Select button lights at high tally.
■ If the key signal is not set to be changed by the next transition ( Next Tran-
sition Key button inactive), the Keyer Select button lights at low tally.
■ After a key signal has been transitioned to the Program bus, the Keyer
Select button remains lighted at high tally and the associated LED indi-
cator (just above the button) lights green.
Keys which are on-air will be removed by the next transition unless:
■ The Next Transition Key button is inactive, or
■ You press the Keyer Select button so that it is tallied off before the next
transition occurs.
Note The key is dropped if either the background source or the key source
becomes non-sync while transitioning to air or when a hot cut is performed.
If configured, selecting a key automatically recalls associated key modifier
settings (
Border , Clip , Gain , and Matte values) previously used for that key
selection.
To set keyer default parameters, refer to the Installation and Service
Manual, Configuration Manager.
Cutting Keys On or Off Air
Keys can be cut on and off air at any time except when audio/video is actu-
ally transitioning.
To cut a key immediately on or off air:
1. Press and hold the Next Transition Key button,
2. Press a Keyer Select button, and