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MLA VC10 Plus • Setup Guide
The Extron MLA VC10 Plus Volume Control Module converts RS-232 commands from a
control system into voltage or impedance changes to control audio amplifiers with volume
and mute control ports. The MLA VC10 Plus mutes or makes level changes on an Extron
MPA Series or half rack XTRA
RS-232-capable MediaLink
module also supports third-party amplifiers that use either variable voltage or 10 kilohm
potentiometer control.
This setup guide provides instructions for quick installation and configuration of the
MLA VC10 Plus with Extron products or some common third-party amplifiers. Installation
and service must be performed by experienced installers only. For complete features,
functions, and configuration instructions, read the user guides that come with your control
processor and amplifier and see the MLA VC10 Plus User Guide, which is available at
www.extron.com.
MLA VC10 Plus
a
b
MUTE
RELAY
c
CONTROL
POWER
REMOTE
12V
RS-232
0.3A MAX
Tx Rx
f
g
Series amplifier from a TouchLink
™
Control Processor, or a third-party control system. The control
®
R
CONFIG
RELAY
OUTPUT
NO
C
NC
R
V-DC
G
G
V
C
G
h
i
Front Panel
a
Power and Activity LED
b
Mute LED
e
c
Relay LED
d
USB Configuration Port
d
e
Reset Button
Rear Panel
f
Power input
g
RS-232 Control
h
Variable Voltage Control
i
Resistance (Potentiometer)
Control
j
Relay Control
j
Touchpanel system, an
™
1
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Summary of Contents for Extron electronics MLA VC10 Plus
- Page 1 The Extron MLA VC10 Plus Volume Control Module converts RS-232 commands from a control system into voltage or impedance changes to control audio amplifiers with volume and mute control ports. The MLA VC10 Plus mutes or makes level changes on an Extron MPA Series or half rack XTRA...
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Page 2: Application Diagram
SI 26 Ampli er Surface-mount Speakers Installation Decide where the unit will be installed. Read the “Mounting” section of the MLA VC10 Plus User Guide for mounting options. NOTES: • The majority of amplifiers researched and tested by Extron work with the MLA VC10 Plus default settings as the unit is shipped, with no further configuration needed. - Page 3 Remote Volume Control Connections to Amplifiers The following examples show how to wire the resistance control terminals of the MLA VC10 Plus to an Extron MPA or XPA Series amplifier, or some common third-party amplifiers. Other amplifiers not shown here require similar connections but you must read the appropriate user guides to ensure the wiring is correct.
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Page 4: Simple Instruction Set
A serial driver is also available on the Extron website (www.extron.com) that allows Extron control processors to issue the commands shown below to the MLA VC10 Plus without needing to enter them manually. For example, this will allow you to exercise serial control over the MLA VC10 Plus volume by turning a knob on an MLC. -
Page 5: Power Connection
Use the 2-pole, 3.5 mm captive screw power connector to connect a power supply (not provided). The MLA VC10 Plus can share a power supply with an Extron control processor. If you are using a third-party controller, the MLA VC10 Plus must be connected to the Extron external 12 VDC, 1 A power supply (part number 70-775-01), which must be purchased separately. - Page 6 DC voltage. This example shows how to connect the MLA VC10 Plus to an amplifier that requires a maximum output voltage of 10 VDC. Connect the USB port of the MLA VC10 Plus to a computer with the Extron DataViewer software installed to send the following SIS commands.
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