Sony DNW-A75 BETACAM SX Operation Manual page 72

5-3 Special Automatic Editing Methods
Notes
• In preread editing, if an input video signal is used as
the reference signal for the output video signal, this
forms a feedback loop. To prevent the occurrence of
feedback, set the OUT REF switch on the subsidiary
control panel to REF, and set item 309 in the setup
menus to "1" so as to use an external reference signal.
• When the preread mode is selected, to prevent
feedback due to the loop connection, whatever the
operating mode of this unit, no E-E video output is
available.
When preread mode is turned off after preread
editing, however, if the loop connection remains and
an E-E signal is output, feedback will occur.
To prevent this, select PB mode for the video and
digital audio channels in all the modes before the
preread editing, as follows.
1
Press the PB button, turning it on.
2
Press the PREREAD button, turning the indicator
on.
3
Make the necessary connections for the preread
editing.
4
After selecting the desired insert editing mode,
carry out the preread editing.
5
When the preread editing is completed, remove the
connections.
6
Press the PREREAD button, turning the indicator
off.
7
Check that no loop connection remains.
5-14
Chapter 5 Editing