User Guide Owner's manual

Installation
and Cabling
This section describes
z Installation Overview
z Connections for Volume Control
z Connections to a Power Supply
z RS-232 Connections
z Relay
Installation Overview
This section provides a brief overview of how to install and set up the MLA VC10 Plus.
1. Decide where the MLA VC10 Plus will be placed and, if necessary, any mounting
requirements (see page 37).
NOTE: To avoid picking up background noise in the cable, use shielded cable
(for example Extron STP 22 cable) and place the MLA VC10 Plus as close
as possible to the amplifier. Extron recommends that the maximum cable
length between the MLA VC10 Plus and the amplifier should be six feet.
2. Read the user guide for the amplifier or mixer. Determine the remote volume control
requirements of the unit.
Potentiometer mode (default) — connect the potentiometer terminals on the
MLA VC10 Plus to the amplifier (see pages 6 and 7).
NOTE: The majority of amplifiers researched and tested by Extron work with the
MLA VC10 Plus straight from the box, using 10 kilohm resistance control,
without further configuration.
Voltage mode — The unit needs configuration, using SIS commands. Determine the
control voltage of the amplifier (see ”Volume Control by Variable DC Voltage,” on
page 8) and connect the voltage terminals on the MLA VC10 Plus to the amplifier
(see page 9).
If necessary, connect a PC to the front panel USB port and configure the
MLA VC10 Plus using SIS commands.
3. After conguring the unit, disconnect the front panel USB connection.
4. Connect the three RS-232 terminals of the MLA VC10 Plus to an Extron control
processor (see page 13) or a third party control device (see page 14).
5. To use the relay control, connect the relay terminals of the MLA VC10 Plus to the
amplifier (see page 15).
MLA VC10 Plus • Installation and Cabling 5