ALLEN & HEATH SQ-6 - Level Control

 12
MIDI Protocol – ISSUE 1
3.4 Levels
Levels can be set using either absolute values or in relative 1dB
increments/decrements.
MSB and LSB are a parameter number showing where the signal is being sent
from and where it is being sent to.
 MSB/LSB parameter numbers are shown in the reference tables.
An absolute level is represented with a combination of course and fine values.
MSB
LSB
Value Coarse
Value Fine
BN 63 MB
BN 62 LB
BN 06 VC
BN 26 VF
Where: N= MIDI Channel, MB/LB = MSB/LSB Parameter number, VC/VF = Value
Examples:
Address, Value, MIDI Ch
Message
Ip1 to LR, 0dB, Ch1
B0 63 40 B0 62 00 B0 06 76 B0 26 5C
Ip1 to LR, -20dB, Ch1
B0 63 40 B0 62 00 B0 06 63 B0 26 49
Ip40 to LR, -20dB, Ch1
B0 63 40 B0 62 27 B0 06 63 B0 26 49
Ip40 to Aux5, -20dB, Ch1
B0 63 44 B0 62 1C B0 06 63 B0 26 49
Ip40 to Aux5, -12dB, Ch4
B3 63 44 B3 62 1C B3 06 6B B3 26 06
Grp4 to Aux8, -24dB, Ch4
B3 63 45 B3 62 2F B3 06 5F B3 26 57
Ip36 to FX3, -12dB, Ch14
BD 63 4D BD 62 22 BD 06 6B BD 26 06
A relative level message uses the same parameter number, but with an
increment or decrement byte.
+1dB (increment)
MSB
LSB
Increment
BN 63 MB
BN 62 LB
BN 60 00
-1dB (decrement)
MSB
LSB
Decrement
BN 63 MB
BN 62 LB
BN 61 00
Both where: N= MIDI Channel, MB/LB = MSB/LSB Parameter number