Galaxy Audio DS-SP36 User Manual
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Input Gain and Output Volume Control:
UPDATE GAINS-PHASE: CMD=01H
A. The User has to send the following Command, including the value to be assigned to “Vol”, for modifying
the Input Gain (Chn = 0, 1, 8) or the Output Volume (Chn = 2, 3, 4, 5, 6, 7).
Also the Output signal Phase can be modified:
TX:
XX = 0,..,31 (ID device)
Chn= 0,...,8: Channel selected, 0, 1, 8=In1, In2, In3; 2,...,7=Out1,..,Out6; when Channel 0, 1, 8
selected, then
Vol= Input Gain, when Channel 2, 3, 4, 5, 6, 7 selected, then Vol= Output Vol.
Phs= Phase only if the Chn>1; Value=0, 1 where 0=direct, 1=inverse (180')
Vol= Gains from 0 to 180 (-12dB/ +6dB step 0.1dB)
B. If the command has been properly executed and the Gain/Volume modified, then the microcontroller will
send back to the User (eg Crestron/AMX Remote Control..) the same frame used by the command:
RX:
STX
ID_M
ID_N
CMD
D0
D1
D2
D3
D4
D5
D6
D7
ETX
F0H
C4H
XX
01H
Chn
00H
00H
00H
00H
00H
Phs
Vol
F7H
STX
ID_M
ID_N
CMD
D0
D1
D2
D3
D4
D5
D6
D7
ETX
F0H
C4H
XX
01H
Chn
00H
00H
00H
00H
00H
Phs
Vol
F7H