Key modifier button tally summary, Key modifier knobs, Recalling and initializing key parameters – Grass Valley M-2100 User Manual
Page 55: Key recall, Keyer defaults

MMCP Installation/Operation Manual
2-31
Keyer Controls and Operation
Key Modifier Button Tally Summary
Key Modifier Knobs
Hue, Saturation and Brightness
The key modifier potentiometers
Brightness
,
Hue
, and
Saturation
control the
matte generator parameters in the delegated keyer when the
Matte
button is
selected (low tally). They also allow you to adjust Border luminance as
described earlier.
Clip/Foreground and Gain/Background
The
Clip
and
Gain
potentiometer knobs control the key signal amplitude,
offset, and edge quality for the selected keyer. The
Clip
knob affects the
offset of the key control signal and the
Gain
knob affects the amplitude and
the hardness/softness of the edge.
These knobs can also be configured using the
Mode
selection in the
Keyers
section of the
Main Sources
form in Configuration Manager to behave as fore-
ground and background clip adjustments. In this mode, the
Foreground Clip
knob only affects the foreground part of the scene, and the
Background Clip
knob only affects the background part of the scene.
These controls are the only ones which apply to the Chroma Keyer.
Recalling and Initializing Key Parameters
Key Recall
Whenever a key is selected, the set of parameters associated with that key
when it was last selected is re-applied.
There is only one set of parameters
associated with each keyer at any given time.
Keyer Defaults
To set keyer defaults:
1.
Press and hold the
Mode/Function
button.
Table 2-4. Key Modifier Tally Summary
Off
No keyer in key modify mode.
A keyer in modify mode, but modifier button not active for that key.
Low
A keyer is in modify mode.
Initialize: All modifier buttons to off.