GRASS VALLEY PERFORMER, Instruction Manual

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Section 3 —
Operation & Service
Model 100/110 Compatible Protocol
Performer may be used as a Model 100 or 110 Production Switcher
peripheral. In one application, video input expansion, the
Performer is controlled using a Performer or TEN–XL Remote
Control Panel. In the second application, the Performer audio
selection automatically follows the switching of the Model 100 or
110 Program Bus. This allows audio to “go around” the 100 while
a related video source is going “through” the 100. This second
application uses the serial interface of the 100 as described in the
Model 100 Installation instructions and the Model 100 compatible
serial protocol.
Note that, when you set Performer’s internal switches for 100
compatible protocol, you had your choice between ALWAYS
FOLLOW and CONDITIONAL FOLLOW settings.
If you picked ALWAYS FOLLOW, the Performer will switch audio
to match Model 100 Program Bus selections so long as the 100 is
UNPROTECTED and EDITOR ENABLED is active.
If you selected the CONDITIONAL FOLLOW setting, the 100
must be UNPROTECTED with EDITOR ENABLED active and
Performer source 10 must be selected.
In the ALWAYS FOLLOW condition, the Performer will
automatically switch video to source 10 when audio is switched
by the 100. Thus, when audio is following the 100 Program Bus,
video source 10 is active.
If the Model 100 FADE TO BLACK mode is enabled and the
Program Bus hi/lo tally is OFF, the Performer will switch to audio
source 1 rather than follow the 100 Program Bus.
This is a proprietary protocol and one which requires no user
programming.