Installation

Front and Rear Panel Features

Front

MLC/RS-232 MLA-VC10

POWER

POWER/	A	B
STATUS	A	B
1		2

1 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.

2 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. Connect cables to this port for

• a MediaLink Controller (MLC) and the MLC’s 12VDC power supply, or

• an external 12VDC power supply and a third party RS-232 control device.

Rear

AMP/MIXERCONFIGURATION

CONTROL ON

1	2	3	4	5	6	7	8
CTRL
3				4

3Amp/Mixer Control connector — Connect a cable between the amplifier’s or mixer‘s remote control port and this 3.5 mm, 2- pole captive screw connector, which provides a ground and control voltage for controlling the audio volume.

4Configuration DIP switches — Set these eight switches to configure the MLA-VC10 for the control voltage required by the amplifier or mixer. See “Setting the Configuration DIP Switches“ on page 2-7.

Determining the Control Voltage

The MLA-VC10 drives the amplifier’s or mixer’s remote control port. Each model or line of amplifier or mixer may require a different voltage for controlling the audio volume. You need to know the specific voltage your equipment requires before you can set up the MLA-VC10 to control it.

Sometimes the equipment’s manual lists the required voltage, but usually you will have to use a voltmeter to test the voltage yourself. This section shows examples of how to measure the control voltage for three widely used amplifiers.

Many models of amplifiers have one of two basic configurations:

•two-terminal (signal and ground)

•three-terminal (signal, ground, and control)

The MLA-VC10 will work with a wide range of amplifiers. Those models shown in this section are included as examples only. The MLA-VC10 is not limited to being used with just the amplifier-mixers shown in this manual.

2-2

MLA-VC10 • Installation and Operation

2-3