Sony DVS-7300 System User Manual page 234

5
Press F3 (FRGD/BKGD) to select "BKGD".
6
Press one of F4 (CH1) to F7 (CH4) to select the background signal.
Note
The background signals are common to M/E-1 to M/E-3. Whichever
M/E bank you select the background on, the same background will also
be used on other M/E banks.
7
On background bus A, select the cross-point button to which the clean
chroma key output such as "M/E-1 CHR KEY FRGD" is allocated.
An image formed by clean chroma key combination appears on the
monitor.
Notes
• Since clean chroma key combination does not use an M/E bank, it is not
possible to use the modifiers for the selected keyer (KEY1 or KEY2).
• When using clean chroma key, setting the key type to "CHR" and the key to
"ON" the whole of the image formed by chroma key combination becomes
an overall key for the background.
Again, in this state, using the key modifiers results in overall modification
of the chroma key image.
Chapter 5 Chroma Keying
5-21