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Extron Electronics, USA
Extron Electronics, Europe
1230 South Lewis Street
Beeldschermweg 6C
Anaheim, CA 92805
3821 AH Amersfoort
USA
The Netherlands
714.491.1500
+31.33.453.4040
www.extron.com
Fax 714.491.1517
Fax +31.33.453.4050
© 2002 Extron Electronics. All rights reserved.
Extron Electronics, Asia
Extron Electronics, Japan
135 Joo Seng Road, #04-01
Daisan DMJ Building 6F
PM Industrial Building
3-9-1 Kudan Minami
Singapore 368363
Chiyoda-ku, Tokyo 102-0074 Japan
+65.6383.4400
+81.3.3511.7655
Fax +65.6383.4664
Fax +81.3.3511.7656
User's Manual
MLA-VC10
MediaLink Accessory
68-690-01 Rev. A
Printed in the USA
07 02
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Summary of Contents for Extron electronics MLA-VC10
- Page 1 Fax +65.6383.4664 © 2002 Extron Electronics. All rights reserved. User’s Manual Extron Electronics, Japan Daisan DMJ Building 6F 3-9-1 Kudan Minami Chiyoda-ku, Tokyo 102-0074 Japan +81.3.3511.7655 Fax +81.3.3511.7656 MLA-VC10 MediaLink Accessory 68-690-01 Rev. A Printed in the USA 07 02...
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Page 2: Fcc Class A Notice
Precautions Safety Instructions • English Warning This symbol is intended to alert the user of important Power sources • This equipment should be operated only from the power source 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. - Page 3 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.
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Page 4: Table Of Contents
(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”... -
Page 5: Chapter One
Table of Contents, cont’d MLA-VC10 Chapter One Introduction About the MLA-VC10 MLA-VC10 • Table of Contents... -
Page 6: About The Mla-Vc10
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 installed with an external 12VDC power supply and a third party RS-232 control device. Refer to the appropriate controller’s, amplifier’s, or mixer’s user’s manual for information on how to wire control... - Page 7 POWER POWER/ STATUS Power/Status indicator LED — This LED lights steadily while the MLA-VC10 receives power, and it blinks three times when the MLA-VC10 receives valid RS-232 volume setting commands. MLC/RS-232 Power connector — This 5-pole, 3.5 mm captive screw port is for RS-232 transmit and receive signal connections and for power and ground connections.
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Page 8: Measuring Voltage For A Toa A-903Mk2 Amplifier
In the picture below the measured voltage is positive, so the upper terminal is the signal voltage terminal, and the lower terminal is for the ground connection. Measuring control voltage for a TOA A-903MK2 amp MLA-VC10 • Installation and Setup When measuring voltage, if the reading is positive,... -
Page 9: Measuring Voltage For A
(+10V in this example) open (not connected). The MLA-VC10 provides a control voltage (supply voltage) of between 0VDC and 10VDC. The MLA-VC10 can control amplifiers that use a higher control voltage. However, if the MLA-VC10 is used with devices that use a control port voltage above 10VDC, the maximum volume will not be reached. - Page 10 Cabling To avoid introducing noise and static into audio channels, the MediaLink Controller (if used), the power supply, the MLA-VC10, and the amplifier or mixer should share the same grounding source. Power and communications cables should be at least 18 AWG.
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Page 11: Ground ( )
To avoid introducing noise and static into the audio channels, the MediaLink Controller (if used), the power supply, the MLA-VC10, and the amplifier or mixer should all share the same grounding source. The 12VDC, 1 amp power supply kit (part #70-055-01) is not included with the MLA-VC10. -
Page 12: Operation
Refer to the MediaLink Controllers User’s Manual for details. RS-232 control The RS-232 protocol for the MLA-VC10 is 9600 baud, 1 stop bit, no parity, and no flow control. The control device (host) can use Extron’s Simple Instruction Set (SIS) commands. -
Page 13: Troubleshooting
MLA-VC10 • Installation and Setup 2-14 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. -
Page 14: Specifications, Part Numbers
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 erratic variation in output volumes •... -
Page 15: Included Parts
MTBF ... 30,000 hours Warranty ... 3 years parts and labor Specifications are subject to change without notice. Included Parts These items are included in each order for an MLA-VC10: Included parts MLA-VC10 3.8 mm, 2-pole captive screw connector 3.5 mm, 5-pole captive screw connector MLA-VC10 user’s manual... - Page 16 Specifications, Part Numbers, Accessories, cont’d This page has been intentionally left blank. This page has been intentionally left blank. MLA-VC10 • Specifications, Part Numbers, and Accessories MLA-VC10 • Specifications, Part Numbers, and Accessories...
- Page 17 Specifications, Part Numbers, Accessories, cont’d This page has been intentionally left blank. MLA-VC10 • Specifications, Part Numbers, and Accessories...
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