Extron Electronics MPX Plus 866 A Rev. B - Manual (Page 198)

MPX Plus 866 A Media Presentation Matrix Switcher • DSP SIS Commands B-2
DSP SIS commands
PRELIMINAR
Y
Command/Response Table for DSP SIS Commands
Many digital signal processor (DSP) functions; gain (which includes the mic
mixes), mutes, group masters, and a protected configuration; can be controlled
using SIS commands. These commands follow the same general rules as basic SIS
commands, but the variables ( X/ s) tend to be more complex. Also, a comprehensive
understanding of the DSP’s audio signal flow is helpful to understanding these
commands. Figure B-1 shows the specific DSP processors and the mic mix-points
that can be set via SIS commands. The signal flow is described in more detail in
“DSP Configurator Program“, in chapter 5, “Switcher Software”.
1 5 3 6
2
4
Figure B-1 — DSP processors addressable via SIS commands
a
Program audio input (pre-matrix) trim block
b
Mic/line input gain block
c
Post-matrix gain block
d
Mix-points (and associated built-in mixing controls)
e
Stereo audio input gain block (for group master controls only)
f
Stereo output volume (for group master controls only)