Grass Valley Indigo AV Mixer v.1.2.2 - Manual (Page 150)

150 INDIGO AV Mixer User Manual
Section 9 — External Devices
GVG-200
This is the same as GVG-100, but allows control of 2-M/E mixers, i.e. the
two M/Es of the INDIGO AV Mixer can be controlled separately.