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User’s Manual
MLA-VC10
MediaLink Accessory
Extron Electronics, USA Extron Electronics, Europe Extron Electronics, Asia Extron Electronics, Japan
1230 South Lewis Street Beeldschermweg 6C 135 Joo Seng Road, #04-01 Daisan DMJ Building 6F
Anaheim, CA 92805 3821 AH Amersfoort PM Industrial Building 3-9-1 Kudan Minami
68-690-01 Rev. A
USA The Netherlands Singapore 368363 Chiyoda-ku, Tokyo 102-0074 Japan
714.491.1500 +31.33.453.4040 +65.6383.4400 +81.3.3511.7655
Printed in the USA
www.extr
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Precautions Safety Instructions • English Warning FCC Class A Notice Power sources This equipment should be operated only from the power source This symbol is intended to alert the user of important indicated on the product. This equipment is intended to be used with a main operating and maintenance (servicing) instructions power system with a grounded (neutral) conductor. The third (grounding) pin is Note: This equipment has been tested and found to comply with the limits for a in the litera
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1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Quick Start Guide — MLA-VC10 Setting Up the MLA-VC10 To install and set up the MLA-VC10, follow these steps and see the appropriate section of this manual for details: Step 1 Determine the control voltage required by the amplifier or mixer. See “Determining the Control Voltage” on pages 2-3 to 2-6 of this manual. Step 2 Set the MLA-VC10’s DIP switches to match CONFIGURATION ON the voltage determined in 1. See “Setting the Configuration DIP Switche
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Quick Start Guide — MLA-VC10, cont’d Table of Contents Chapter 1 Introduction .......................................................... 1-1 MLA-VC10 MLC/RS-232 NOTE The external power supply POWER provides power to both the An external MLA-VC10 and the MLC. About the MLA-VC10 ........................................................... 1-2 POWER/ power supply STATUS A B (12VDC, 1A max.) White or Ground all devices MLA-VC10 white-striped Chapter 2 Installation and Setup .................
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Table of Contents, cont’d MLA-VC10 Chapter One 1 Introduction About the MLA-VC10 ii MLA-VC10 Table of Contents
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MLA-VC10 MLC/RS-232 POWER POWER/ STATUS A B Introduction About the MLA-VC10 (part #60-502-01) MLA-VC10 Along with an RS-232 host device, the Extron MediaLink™ Accessory Volume Control 10 (MLA-VC10) can be used to remotely control the volume output of an audio mixer or amplifier that has a 0VDC to 10VDC variable voltage remote control port for volume control. The MLA-VC10 can be installed with an Extron MediaLink Controller (MLC) and the MLC’s 12VDC power supply, or the MLA-VC10 can be installe
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Installation Front and Rear Panel Features Determining the Control Voltage The MLA-VC10 drives the amplifier’s or mixer’s remote control Front port. Each model or line of amplifier or mixer may require a different voltage for controlling the audio volume. You need to MLA-VC10 MLC/RS-232 POWER know the specific voltage your equipment requires before you can set up the MLA-VC10 to control it. POWER/ Sometimes the equipment’s manual lists the required voltage, STATUS A B but usually you will ha
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Installation and Setup, cont’d ™ Measuring voltage for a TOA A-903MK2 amplifier Measuring voltage for a Peavey UMA 35T II amplifier Control terminals for several TOA amplifiers are two screw Control terminals for Peavey amps also usually consist of two terminals labeled “REMT VOL”. They do not indicate which screw terminals, in this example labeled “Remote Vol”. Use a terminal is for control voltage and which is for the ground. Use voltmeter (set to VDC) to measure the voltage as shown below.
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1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Installation and Setup, cont’d Measuring voltage for a Setting the Configuration DIP Switches Biamp Precedence CMA 60 amplifier Set the Configuration DIP switches to the setting corresponding to the control voltage required by the amplifier or mixer. Several Biamp amplifiers have three screw terminals labeled See “Determining the Control Voltage” in this chapter. The “remote level”. The control voltage may be indicated (by a “C” in the following
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Installation and Setup, cont’d MLA-VC10 DIP Switch Settings for Approximate MLA-VC10 DIP Switch Settings for Approximate Amplifier/Mixer Measured Control Voltages Amplifier/Mixer Measured Control Voltages (cont'd) Closed = up, Closed = up, Closed = up, Closed = up, , on Closed = up, Closed = up, Voltage Voltage Voltage Voltage Voltage Voltage Open = down, Open = down, Open = down, Open = down, Open = down, Open = down, 1234567 8 1234567 8 1234567 8 1234567 8 1234567 8 1234567 8
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Installation and Setup, cont’d MLC/RS-232 Wiring the MLC/Power connector POWER AB MLA-VC10 The 12VDC, 1 amp power supply kit (part #70-055-01) front panel MLC/RS-232 is not included with the MLA-VC10. Power port MLC/RS-232 White or MLA-VC10 POWER MLC/POWER white-striped POWER/ AB STATUS A B wire MLA-VC10's front panel MLA-VC10 +12VDC input MLC/RS-232 Front Panel Ground ( ) Power port An external White or power supply white-striped (12VDC, 1A max.) Ground all devices wire Connecting an MLA
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Installation and Setup, cont’d Error response Operation When the MLA receives a valid SIS command, it executes the To control audio volume when using an MLA-VC10, turn a command and sends a response to the host device. If the MLA connected MediaLink Controller’s Volume knob, or send is unable to execute the command because the command commands via an RS-232 remote control device such as a contains invalid parameters, it returns the following error computer or third party control system. respons
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Installation and Setup, cont’d Troubleshooting If the MLA-VC10’s LED doesn’t light: The MLA-VC10 is not receiving power. Check the wiring at the MLA-VC10’s MLC/Power port for correct polarity. Verify that the power supply has been connected to a functional power outlet. If the MLA-VC10’s LED doesn’t blink when volume commands are sent: The volume command is out of the acceptable range (0 to 100 steps). The MLA-VC10 is not receiving RS-232 commands correctly. If there is no audio output
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1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Installation and Setup, cont’d The amplifier accepts a higher control voltage than the MLA-VC10 MLA-VC10 provides, so the amplifier will not reach its highest volume level. Try another amplifier with a lower control voltage requirement. If audio output does not reach the amplifier’s maximum volume If you use an MLA-VC10 with an amplifier/mixer that has a control voltage requirement above 10VDC, the maximum volume may not be reached. If volume changes lead to
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Specifications, Part Numbers, and Accessories Specifications MLA-VC10 Functional Block Diagram Control — amplifier Maximum voltage output .......... 10VDC ± 5% General Power ............................................. 12VDC from a 1 A external power supply Temperature/humidity .............. Storage -40° to +158°F (-40° to +70°C) / 10% to 90%, non-condensing Operating +32° to +122°F (0° to +50°C) / 10% to 90%, non-condensing Rack mount ................................... No Enclosure type.....
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