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2.2 Serial Command Protocol
The CA Series of products supports a fixed library of Serial commands, which can be
transmitted directly to the RS-232 port on the unit, which is also for CA-Config communications.
Note that each command must end with a carriage return (HEX = 0D).
Command
Description
#ACHx
Select Audio Channel
x
1 = Channel 1
2 = Channel 2
3 = Channel 3
4 = Channel 4
Command
Description
#ACH?
Return current channel selection
Command
Description
#ACF
Forward to next available channel
Command
Description
#ACR
Reverse to available channel
Command
Description
#AVIs
Increase volume, range 1-32 (-2db/step), steps 1-3
s
1 = 1 step
2 = 2 steps
3 = 3 steps
Command
Description
#AVI
Increase volume 1 step, range 1-32 (-2db/step)
Command
Description
#AVDs
Decrease volume, range 1-32 (-2db/step), steps 1-3
s
1 = 1 step
2 = 2 steps
3 = 3 steps
Command
Description
#AVD
Decrease volume 1 step, range 1-32 (-2db/step)
