Extron electronic MLA-VC10 user manual Table of Contents

Quick Start Guide — MLA-VC10, cont’d

Table of Contents

	MLC/RS-232		MLA-VC10	NOTE The external power supply
		POWER		provides power to both the
POWER/				MLA-VC10 and the MLC.
STATUS	A	B

MLA-VC10	White or	Ground all devices
	white-striped
Front Panel
	wire

+12VDC Ground ( )

+12VDC +12VDC

Ground ( ) Ground ( )

BReceive (Rx) Transmit (Tx) B

A Transmit (Tx) Receive (Rx) A

Display/Source Control		Relays	IR / RCM	Extron Switcher Control		33-644-01A 07 01 Printedinthe USA
A B C D E A B C D E		1A 1B 2A 2B 3A 3B A B C D		1 2 3 4 5 6 A B
IR	RS-232			Tally Out	MLS/Power

An external

power supply (12VDC,

1A max.)

NOTE If you use cable that has a drain wire, tie the drain wire to ground at both ends.

To connect a computer or third party control system, see page 2-9.

MLC 206

Bottom Panel

Chapter 1 • Introduction	1-1
About the MLA-VC10	1-2
Chapter 2 • Installation and Setup	2-1
Front and Rear Panel Features	2-2
Determining the Control Voltage	2-3
Measuring voltage for a TOA A-903MK2 amplifier	2-4
Measuring voltage for a Peavey UMA™ 35T II amplifier	2-5
Measuring voltage for a
Biamp Precedence CMA 60 amplifier	2-6
Setting the Configuration DIP Switches	2-7
Cabling	2-9

Step 5

Connect the power cables to a power source and power on the equipment (MLC/power supply, RS-232 host device, and amplifier or mixer).

Step 6

If you are using an MLC with the MLA-VC10, use the Controller (MLC) Config portion of the MediaLink control software (included with the MLC) to set the MLC’s volume control to “Switcher” instead of “Projector”. Refer to the MediaLink Controllers User’s Manual for details.

Step 7

Test the system by turning the volume knob on the MLC or by sending a volume-relatedRS-232 command while listening for a change in the volume level and observing the MLA-VC10’s LED (which should blink).

Step 8

If wiring changes are needed, turn off the power and unplug the equipment, make any necessary wiring changes, then restore power to the system.

In some applications the amplifier’s front panel volume control knob may be disabled when the MLA is attached to the amplifier’s control port.

Wiring the MLC/Power connector	2-10
Wiring the Amp/Mixer Control connector	2-11
Operation	2-12
RS-232 control	2-12
Command/response table for SIS commands	2-14
Troubleshooting	2-15
Appendix A • Specifications, Part Numbers,
and Accessories	A-1
Specifications	A-2
Included Parts	A-2
Cables	A-2
MLA-VC10 Functional Block Diagram	A-3

All trademarks mentioned in this manual are the properties of their respective owners.

68-690-01 Rev. A

Printed in the USA

07 02

QS-2 MLA-VC10 • Quick Start Guide MLA-VC10 • Table of Contents i