Sony DVS-9000 User Manual page 375

Switching video process memory on or off
In the Switcher >Key/Wipe/FM/CCR menu, press [Video Proc Memory],
turning it on. (See also "Switcher Setup" in Chapter 1 (Volume 1).)
Settings for the show key function
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Settings for key auto drop function
The "key auto drop" function automatically switches off a particular key when
you press a cross-point button in a bus that outputs the background on the
particular switcher bank (PGM/PST, or M/E-1 to M/E-3).
When the background output bus is in flip-flop mode, this is always the A bus.
In bus-fixed mode, it is either the A bus or the B bus depending on the fader
lever position.
For details of bus-fixed mode, see "Executing a Transition" in Chapter 1
(Volume 1).
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Setup Relating to Switcher Processor
In the Switcher >Key/Wipe/FM/CCR menu, press [Show Key].
The Show Key menu appears.
In the <Show Key Enable> group, press the signal for which "show key"
is enabled, turning it on.
To set the time for which "show key" is held, press [Hold Time].
Adjust the following parameter.
Knob Parameter Adjustment
1 Hold Time Show key hold time
In the Switcher >Key/Wipe/FM/CCR menu, press [Key Auto Drop].
The Key Auto Drop menu appears.
Setting values
0 to 999 (frames)