Grass Valley Maestro Master Control Reference Manual v.2.4.0 - Manual (Page 25)

MAESTRO — Automation Interface Protocol Technical Reference Manual 25
Section
1
Introduction
The Maestro automation command set is an extended version of the Saturn
command set, which in turn was derived from the M-2100 protocol. An
automation system designed to operate with Saturn or Master-21 should
operate with Maestro with minimal changes.
This document includes all Saturn commands, Maestro applicability to
Saturn commands, and new Maestro commands. The Master-21 command
set is defined in Grass Valley document number TP3504-00.
These protocols are based upon standards described in SMPTE documents
EG29-1993, RP113-1992, RP138-1992, RP139-1992, RP163-1992, and RP172-
1993; and on the ESbus standard as defined in EBU document Tech 3245-E.
The features described in this document are applicable to software release
Maestro 1.0 and later.
Legacy Command Caveats
1. The order of the Saturn Input table is ascending category/number
combinations. For example, if the categories are defined (in order) as
VTR, AUX and TEST, the Saturn Input table will be ordered as VTR 1,
VTR 2, VTR 3 (etc.), then AUX 1, AUX 2, AUX 3 (etc.), TEST 1, TEST 2
TEST 3 (etc.). Invoking autoXptSelectionShow at the shell prompt of the
Saturn video processor will list sources and their associated source
numbers.
2. Mixer & Keyer - The method for selecting and manipulating sources on
the Mix and Key buses is as follows:
Mixer: Use the TAKE_XPT command to bring the desired source into
the Mixer. Then use the PST_OVER or the PGM_OVER to select the
source on the PST or PGM bus. Alternatively, use the SET_MIX
command for full mixer control.
Keyer: Use the TAKE_XPT command to bring the desired source into
the Keyer. Then use the SEL_1KEY or the SEL_2KEY to select the source
on the PST or PGM bus. SEL_1KEY selects KEY 1, SEL_2KEY selects