User Guide Owner's manual

Table Of Contents

Introduction

This user guide contains information about the Extron MLA VC10 Plus volume control

module with instructions for experienced installers on how to install, conﬁgure, and

operate the equipment.

Unless otherwise specied, references in this guide to the “MLA” relate to the features or

operation of the MLA VC10 Plus.

References to the “control processor” or “controller” refer to the Extron or third-party

controller that provides RS-232 commands to the MLA VC10 Plus.

References to “amplier” relate to any amplier and mixer under the control of the MLA.

MLA VC10 Plus Description

The MLA VC10 Plus is a MediaLink

accessory volume control module. It converts RS-232

commands from a control system into voltage or impedance changes to control audio

ampliers with volume and mute control ports. It can be used with Extron or third-party

controllers and audio ampliﬁers that have remote volume control capability.

The MLA VC10 Plus is compatible with the following control devices:

z Extron MediaLink controllers

z Extron IP Link

control processors

z Third party control systems capable of RS-232 serial control

The MLA VC10 Plus is compatible with Extron ampliers, including:

z MPA 152 and MPA 401

z XPA 1002 and XPA 2001

z MP 101

MLA VC10 Plus Features

Volume and mute control — The MLA VC10 provides volume and mute control for the

Extron MPA or XPA half-rack series ampliers and many third-party ampliers.

High resolution volume control range — Provides smooth volume changes without

audible level jumps.

Compatible with multiple control systems — The volume control module uses an

RS-232 protocol that is compatible with Extron and third-party serial-capable controllers.

Adjustable maximum limit on variable voltage or resistance control — The

amplier volume level is adjusted using voltage (0 - 10 VDC) or resistance (0 - 10 kilohm

potentiometer) control. The maximum control voltage or resistance range can be reduced

to avoid damage to third party ampliﬁers that need a lower control range or to limit the

maximum audio output of the ampliﬁer.

Linear or logarithmic taper modes — These modes are available for both voltage and

resistance control and provide a choice between consistent linear or natural logarithmic

volume changes.

MLA VC10 Plus • Introduction 1