Video Signal and Key Signal Settings (When Using a Source
Selector) � 51
5Press F3 (FRONT KEY MODE) to select the key type as
follows.
Internal: Use the box defined as the effective image area in
the section OCROP Settings� (page 5-18) as the key
source.
External: Use an external key signal as the key source.
Luminance: Use the luminance of the input video signal as
the key source.
Key Off: Force the key signal level to zero.
6If you selected OExternal� or OLuminance� in step 5, set the
following parameters.
Y Center knob (OClip�): reference level for key signal
generation (�10 to +110%)
Y Right knob (OGain�): key sensitivity (�100 to +100%)
7To invert the key signal, press F4 (FRONT KEY INVERT),
turning it on.
8To use different signals for the two sides of the video image,
press F5 (SEPARATE SIDE), turning it on.
To inhibit cross-point switching during key frame
execution
To inhibit cross-point switching for a single key frame, press F7
(KF XPOINT HOLD), turning it on.
Selecting the back video and key signals
To select the video and key signals for the back of the image, press
F8 (FRONT/BACK).
The indications for F1 to F4 change, allowing the video and key
signals to be selected for the back of the image.
For details of the settings, see the previous section OSelecting the
front video and key signals.�
6-10Chapter 6 Input/Output Signal Operations |
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