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Section 2— Control Panel Descriptions
Mask Delegation
Pressing one of the delegation buttons selects one of
the mask generators. Only one button can be on at a
time.
INHibit MASK delegates the mask subpanel controls for adjusting
the inhibit mask. The actual selection of mask inhibit is performed
on the keyer subpanel (see the MASK INH discussion under the
Keyer panel description).
FORCE MASK delegates the mask subpanel controls for making
adjustments to a forced mask. The actual selection of force mask is
performed on the keyer subpanel (see the FORCE MASK
discussion under the Keyer panel description.
Auto delegation of the mask subpanel may occur when other
buttons on the control panel are pressed. (Refer to the Auto
Delegation discussion earlier in this section.)
Mask Source Selection
The top row of buttons (excluding MASK INVert) select sources
that determine the shape of the mask. These buttons are mutually
exclusive and one is always active.
BOX uses a rectangular box generator for the mask. The box is
completely independent of the wipe systems. The four knobs at
the top of masks subpanel determine the position of the four sides
of the box. The box mask has hard edges. Each keyer has its own
box, so it is possible to have up to six differently sized box masks
in use at a time.
PRI WIPE selects the primary (transition) wipe generator to
produce the mask. The primary wipe generator in the same M/E
provides the mask signal. Wipe Subpanel controls select the
pattern, size, position and edge softness.
M/E 1
Key 1
M/E 2
Key 1
M/E 2
Key 2
M/E 1
Key 2
Inhibit
Mask
Force
Mask
Box
Pri
Wipe