FOR-A VSF-128128, Operation Manual

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9-6. Alarm Switching
The alarm switching is used to automatically switch to a registered source channel serving as an
emergency source channel when the video signal for a source channel that is output to a
designated destination channel is disconnected.
9-6-1. Alarm Switching Setting and Cancellation
The target destination channel, alarm switching ON/OFF flag, and emergency source
channel are designated. Alarm switching is enabled when the ON/OFF flag (EMG Flag) is
set to ON, and alarm switching is invalid when the flag is set to OFF.
Contents
Item Parameter Description
Dest 001 – Max. Dest Target destination channel
EMG Flag 0 or 1
Alarm switching ON/OFF flag
(1=ON, 0=OFF)
EMG Src 0001 – Max. Src
Source channel that is output to destination
during emergency
9-6-2. Confirming Alarm Switching
This designates the target destination channel for confirming the alarm switching information.
Contents
Item Parameter Description
Dest 001 – Max. Dest Target destination channel
EMG Flag 0 or 1
Alarm switching ON/OFF flag
(1=ON, 0=OFF)
EMG Src 0001 – Max. Src
Source channel that is output to destination
during emergency
Command ALS Dest (3) EMG Flag (1) EMG Src (4) CR+LF
Response OK CR+LF
（
Ends normally
）
ER CR+LF
（
Ends abnormally
）
Command ALR Dest (3) CR+LF
Response ALA EMG Flag (1) EMG Src (4) CR+LF
（
Ends normally
）
ER CR+LF
（
Ends abnormally
）