Grass Valley 2200 - Manual (Page 9)

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General Description
The Þrst four sections of this document describe the communications protocol
supported by the Model 2200, 3000, and 4000 Switchers for use by editors. This
protocol is called the Òeditor protocolÓ or Òeditor interfaceÓ in this document. This
protocol is used by Grass Valley Sabre and Super Edit Editors. The information is
provided in this manual for use by other vendors wishing to interface their editors
to these Grass Valley switchers.
Detailed on the following pages are the protocols, data formats, and system timing
requirements for commands exchanged between an editor and the Model 2200,
3000, and 4000 Production Switchers. Although the protocol is common for all of
these switcher models, the different models do differ in their capabilities. The
detailed capabilities of each model are described in the pertinent Operation
manual. However, in general, the switchers do for the most part provide the same
functionality. From the perspective of an editor, the major differences between the
models are the number of M/Es and whether or not the switcher has a DSK and
PGM/PST bus.
In addition, Section 5 of this manual describes the Control-Point Language (CPL)
protocol used with the Grass Valley Krystal digital picture manipulator (DPM).
Manual Contents
This manual has been revised to incorporate changes made in the software since
its initial release.
Section 1 Ñ introduces this manual and the switcher communications protocol.
Section 2 Ñ describes the editor serial protocol.
Section 3 Ñ lists and explains the speciÞc commands used to control the switcher
for Version 5.1 and later, and for Version 5.0 and earlier.
Section 4 Ñ lists and explains the new parameter-based command set (PBCS) for
reading, setting, and trimming the switcher state directly, introduced with
Version 5.1.
Section 5 Ñexplains the effect recall and run (including the switcherÕs run lever
arm), control of switcher aux busses by the DPM when used as input selectors,
and on air tally involving the DPM with Version 5.1.
Introduction
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