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Section 2 — Control Panel Descriptions
software menu. The CLIP control has enough range to clip down
to superblack.
A menu selection is available that switches a chroma trap into the
key path to remove unwanted chroma from video used for
keying.
Pressing the CHR KEY button delegates the Chroma Keyer
subpanel to that M/E. (The CHR KEY button is functional only
when the chroma keyer option is installed.) Refer to the Chroma
Keyer subpanel description later in this section for details on
chroma keyer operation. CHR KEY does not function with
background keyers (layered mode), and is not available on the
DSKs.
Pressing the Primary Preset Pattern
PRI PST PTTN button selects
the output of the primary (transition) wipe generator as the key
source. Pattern adjustment is provided by the Wipe subpanel (see
the Wipe subpanel description later in this section for details). The
key CLIP and GAIN knobs are non-functional when this mode is
selected.
In the signal path through the Model 3000 switcher, keys,
including preset patterns, occur before the effect send crosspoints.
This allows any key, including a preset pattern, to be sent to an
external digital video effects device via an effects send. Transition
wipes, however, occur after the effects send crosspoints.
After pressing PRI PST PTTN, the VIDEO KEY and AUTO SELECT
KEY
functions are ignored and the SPLIT KEY indicator is turned
off; however the VIDEO KEY and AUTO SELECT KEY buttons and
lamps continue to operate.
NOTE:
Double-pressing the
PRI PST PTTN
or
SEC PST PTTN
button
in the Keyer Subpanel opens up a menu that allows you to set the preset
pattern wipe direction. A single press of either the
PRI PST PTTN
or the
SEC PST PTTN
button auto delegates the Wipe Subpanel.
CHR
KEY
PRI
PST
PTTN