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MVX VGA A Matrix Switchers • Programmer’s Guide
PRELIMINARY
Front panel Configuration port
N
This port is hardwired for RS-232 only.
The optional 9-pin D to 2.5 mm mini jack TRS RS-232 cable, part #70-335-01
(figure 4-2) can be used for connection to the Configuration port.
6 feet
(1.8 m)
Part #70-335-01
5
1
9
6
Sleeve (Gnd)
Ring
Tip
9-pin D Connection TRS Plug
Pin 2 Computer's RX line Tip
Pin 3 Computer's TX line Ring
Pin 5 Computer's signal ground Sleeve
Figure 4-2 — Optional 9-pin TRS RS-232 cable
N
This port is independent of the rear panel Remote port and is not affected by
changes to the rear panel port’s protocol. This front panel port’s protocol can be
changed via SIS command control only. See the Command/Response table for
SIS commands, later in this chapter, to configure both ports under SIS control.
Host-to-Switcher Instructions
The switcher accepts SIS (Simple Instruction Set) commands through either serial
port. SIS commands consist of one or more characters per command field. They do
not require any special characters to begin or end the command character sequence.
Each switcher response to an SIS command ends with a carriage return and a line
feed (CR/LF =
]
), which signals the end of the response character string. A string
is one or more characters.
Switcher-Initiated Messages
When a local event such as a front panel operation occurs, the switcher responds
by sending a message to the host. The switcher-initiated messages are listed below
(underlined).
(C) Copyright 2006, Extron Electronics CP 300 450 MAV IP, Vx.xx, 60-nnn-01
]
The switcher initiates the copyright message when it is first powered on. Vx.xx is
the firmware version number; nnn is the part number for your switcher model.
Qik
]
The switcher initiates the Qik message when a front panel switching operation has
occurred.
Sprnn
]
The switcher initiates the Spr message when a memory preset has been saved from
the front panel. nn is the preset number.
Rprnn
]
The switcher initiates the Rpr message when a memory preset has been recalled
from the front panel. nn is the preset number.