Kramer Electronics VS-3232A - Manual (Page 68)

Communication Protocols
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"G": AUDINP_GAINS: Audio Input/Output Gain Adjustment/query
To set the gain setting of input 4 to setting 15, the command would be:
** G VAR1, AUDINP_GAINS, 4,15~!!
where the first number (4) is the input number, and the second number (15) is the real
value index according to the following table:
Index Gain Value Increment
0 -20dB
40 0dB (unity gain) 0.5dB step
80 +20dB
To set the attenuation setting of output 32 to setting 47, the command would be:
** G VAR1, AUDOUT_GAINS, 32,47~!!
where the first number (32) is the output number, and the second number (47) is the
real value index according to the following table:
Index Gain Value Increment
127 0dB (unity gain) 0.5dB step
47 -40dB
46 -41dB 1.0dB step
17 -70dB
16 -72dB 2.0dB step
02 -100dB
01 Mute
00 Mute
For both commands the following string is returned:
** OK !!
To query the gain setting of input 4, the command would be:
** G VAR1, AUDINP_GAINS, 4~!! where number (4) is the input number.
The response is:
** G VAR1, AUDINP_GAINS, 4,15~ OK!!
To query the gain setting of output 32, the command would be:
** G VAR1, AUDOUT_GAINS, 32~!! where number (32) is the output number.
The response is:
** G VAR1, AUDOUT_GAINS, 32,47~ OK!!
Note: The matrix VS-3232A switches the Left and Right audio channels
simultaneously, but can adjust the gain in the Left and Right channels
separately (thus solving the Balance issue). If the matrix is controlled from the
front panel or the communication Kramer 2000 protocol, the real gain value for
left and right channels could be different. Note that when using the ASCII
protocol, the real value that is returned for a query command is received from
the left channel.