Grass Valley Maestro Master Control Reference Manual v.2.4.0 - Manual (Page 78)

78 MAESTRO — Automation Interface Protocol Technical Reference Manual
Section 4 — Definition of Supported Saturn Commands
steps.
FE-FF= Audio ratio corresponding to +INF dB
<unused> = 00-FF (hex, one byte). Don't care about value.
Maestro applicability:
<audio ratio> = 00-FF (hex, one byte)
Specifies the audio ratio to be applied on all audio channels, or reports the current ratio of CH1/2 on a reply. Sat-
urn audio ratio is -18.0 dB through 18.0 dB in 0.375 (3/8) dB steps where FE-FF is +INF dB. The Maestro
range is from 0 dB to 24.0dB in .1dB increments and +INF. The Range supported by this command is from 0 dB
to 18.0dB in .1dB increments and +INF. Maestro does not support negative (-) dB values.
00 = Audio Ratio NOP IF_NULL
01-7F = Audio ratio set to 0 dB
80-FD = Audio ratio scaled to 0.1 dB through 18.0 dB in 0.1dB increments rounded to the
lower whole 0.1 dB step.
FE-FF =
Audio ratio set to +INF.
<key mix bus> = 00, 40, 60, 70, 80, A0, C0 (hex, one byte)
Commands: Enables/Disables the specified mixer on all Audio Groups.
Query: Indicates whether the specified mixer is enabled on any Audio Group.
The Saturn protocol query described above can only accommodate sources numbered from 1 to 255. If a Maestro com-
mand was used to set a video/audio source (which could be from 1 to 65535), the Saturn query will return a value of zero.