FOR-A VSF-128128, Operation Manual

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9-5-2. Starting Chop Switching
This designates the chop registration number and starts chop switching.
Contents
Item Parameter Description
CH Num 01 – 16 Chop registration number
IMPORTANT
When a crosspoint switching command is sent for a destination channel where chop
switching is already in progress, the chop operation is stopped, and the crosspoint
switching command is executed.
When a chop switching registration command (See section 6-5-1.) is sent for a
destination channel where chop switching is already in progress, the chop switching
operation is stopped.
If the correspondence between the logical channels and physical channels of the
destination and source are changed by the logical channel assignment function (See
section 6-9.) while chop switching is already in progress, the modified results are used
in the chop switching operation.
To perform chop switching with a minimum of image distortion, the input video must be
synchronized with the external reference signal input to REF IN, and the same DC
level must be used. Otherwise, image distortion may occur during switching, while
switching may still be possible.
Command CHG CH Num (2) CR+LF
Response OK CR+LF
（
Ends normally
）
ER CR+LF
（
Ends abnormally
）