Sony HDS-7100 User Manual page 182

Selecting the back video and key signals
4
Enter the button number (0 to 63) of the key signal to be
selected using the numeric keypad, and press the ENTER
button.
This selects the key signal.
5
Press F3 (FRONT KEY MODE) to select the key type as
follows.
Internal: Use the box defined as the effective image area in
the section "CROP Settings – 13" (page 5-16) 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.
6
If you selected "External" or "Luminance" in step 5, set the
following parameters.
• Center knob ("Clip"): reference level for key signal
generation (–10 to +110%)
• Right knob ("Gain"): key sensitivity (–100 to +100%)
7
To invert the key signal, press F4 (FRONT KEY INVERT),
turning it on.
8
To use different signals for the two sides of the video image,
press F5 (SEPARATE SIDE), turning it on.
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 "Selecting the
front video and key signals".
Chapter 6 Input/Output Signal Operations
6-5