Grass Valley Maestro Master Control Reference Manual v.2.4.0 - Manual (Page 110)

110 MAESTRO — Automation Interface Protocol Technical Reference Manual
Section 5 — Definition of Extended Maestro Commands
MAESTRO_AUDIO_MIXER_RATIO
Hex definition Mnemonic
0x21 MAESTRO_AUDIO_MIXER_RATIO
Command format:
<PREAMBLE> MAESTRO_AUDIO_MIXER_RATIO <AudioMixer> <destInputBus> <groupMask> <audioMixerRatio>
Query format:
READ <PREAMBLE> MAESTRO_AUDIO_MIXER_RATIO <AudioMixer> <destInputBus> <groupMask>
Reply format:
IFRE <PREAMBLE> MAESTRO_AUDIO_MIXER_RATIO <AudioMixer> <destInputBus> <groupMask>
<audioMixerRatio>
Use applicable with UPDATE:
Yes
Argument definitions:
<destInputBus> = 0-1
0 = Preset IB_PRESET
1 = Program IB_PROGRAM
<AudioMixer> = 1-4
1= Audio Mixer 1 AUDIO_MIXER1
2= Audio Mixer 2 AUDIO_MIXER2
3= Audio Mixer 3 AUDIO_MIXER3
4 = Audio Mixer 4 AUDIO_MIXER4
<groupMask> = 4 bytes (Most Significant Bit first)
Bit 0 = VIDEO VIDEOGROUP
1 = Audio Group 1 AUDIOGROUP1
2 = Audio Group 2 AUDIOGROUP2
…
15 = Audio Group 15
AUDIOGROUP15
16 = Audio Group 16 AUDIOGROUP16
<audioMixerRatio> = 0x00-0xF0 or 0xFF for +INF(1 hex byte). The range is from 0-0xF0 which corresponds to 0 dB to
24.0dB in .1dB increments. 0xFF corresponds to +INF.