QS-1
MPX 423 A • Quick Start
PRELIMINARY
Installation
Step 1
Turn off power to the MPX 423 A switcher and all other devices that will be connected.
Step 2
Select your mounting option and install the appropriate brackets. Mount the switcher as illustrated
below (see chapter 2, “Installation”).
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#8 Screw (4 Plcs)
Each Side
Mounting Screws (2 Plcs)
Each Side
or
Supplied Bracket
Optional Bracket
Step 3
Attach up to four VGA, four S-video, and four Video (composite) input devices (up to four of each
type) to the MPX 423 A switcher.
Step 4
Connect up to two VGA, two composite video, or two S-video outputs from the switcher to a projector
or other output device. See the following page for an installation diagram.
Step 5
For audio input, connect up to 12 audio sources to the audio inputs of the VGA, Video (composite),
or S-video groups (up to four audio sources for each group). Refer to Chapter 2, Installation, for wiring
diagrams.
Step 6
For audio output, connect up to two audio output devices. Refer to Chapter 2, Installation, for wiring
diagrams.
Step 7
If the MPX 423 A matrix switcher is to be connected to a computer or host controller for remote
control,
1. Connect the host controller’s RS-232 cable to the 9-pin, female RS-232 remote connector of the
switcher (see pinout table on the following page).
Quick Start — MPX 423 A Matrix Switcher
