Extron electronic MLS 304MA, MLS 304SA, MLS 406SA, MLS 406MA That has an external power supply

Installation, cont’d

RS-232

MLC/IR

TxRx IR +12V

A B C

MediaLink
Switcher
rear panel	Tx Rx IR 12V
	RS-232
RS-232/MLC/IR port	MLC/IR
	A B C

MediaLink Switcher Rear Panel

NOTE	If using an external power
	supply (instead of the MLS) to	MediaLink
	power the MLC, you must	Controller
	connect a ground wire	(MLC)
	between the MLC and MLS.

	Ground (	)	Transmit (Tx) B	Ground (	)
B Receive (Rx)
A Transmit (Tx)			Receive (Rx) A	+12 VDC input

External

Power Supply

PRELIMINARY

NOTE If you use cable that has a			MLC
	drain wire, tie the drain wire		MLS/Power	External
	to ground at both ends.	A B	port	Power Supply
				(12 VDC, 1A max.)
		MLS / Power
MediaLink Switcher to an MLC			Ground all devices
that has an external power supply
RS-232
MLC/IR	MediaLink
TxRx IR +12V	Switcher
	rear panel			Tx Rx IR 12V
				RS-232
A B C	RS-232/MLC/IR port			MLC/IR
				A B C
			MediaLink Switcher Rear Panel

NOTE Connect a ground wire between the MLC and the computer or control system.

Ground ( )			or
B Receive (Rx)	Transmit (Tx) 3
A Transmit (Tx)	Receive (Rx) 2
NOTE If you use cable that has a		Host Computer	Control System
		RS-232 port
drain wire, tie the drain wire		of a
to ground at both ends.		computer or
		control system

MediaLink Switcher to a computer or control system

You may use a male 9-pin D-to-bare-wire RS‑232 cable or a universal control cable (UC 50', UC 100', or UC 200') for the connection to a computer or control system. One end of the UC cable is terminated with a female 9-pin D connector, and the other end is unterminated. The UC cable’s pin assignments are as shown in the following illustration. Refer to the computer/control system’s pin assignment guide to determine which of the cable’s wires to connect to which of the MLS’s RS‑232/MLC/IR port pins.

	Black	9
	Grey	8					To the
To the	Purple	7			1
	Blue	6				6	computer
MLS	Green	5					or
						9
switcher	Yellow	4		UC Cable	5		control
	Orange	3					system
	Red	2
	Brown	1	Shield		Connector Shell
	Color	Pin #

UC 50', 100', 200' Cable Color Codes

2- MLS 304 Series, MLS 406 Series • Installation