Extron electronic MLC 62 IR D manual Wiring the Volume Control Module MLC 64 RS VC D Only

Wiring the Volume Control Module (MLC 64 RS VC D Only)

Connect the remote volume control port of an Extron amplifier to the 3-pole captive screw connector on the rear panel of the MLC 64 volume control module, as shown in the figure below. No software configuration is required for this module.

NOTES: • Choose an Extron amplifier that is capable of remote volume control and muting. Not all Extron amplifiers have remote volume control ports. The

MPA 122 or MPA 401 are examples of the type of amplifier to use.

• Use shielded cable for audio connections to avoid inducing noise.

1.Wire a 3-pole captive screw connector (provided) to an audio cable as shown below:

Vol/Mute
10V
1 2 3 Amplifier	10 V
Rear Panel
	Vol/Mute
	Ground

GND VOL 10V

A B C

MLC 64 VCM

Rear Panel

Figure 28. Wiring the Volume Control Module

In figure 28:

•A = ground

•B = Volume and mute control with DC voltage. The range is 0 to 10 V, where 0 V is mute and 10 V is maximum volume.

•C = 10 VDC reference voltage

2.Plug the wired connector into the 3-pole captive screw connector on the rear panel of the MLC 64 volume control module.

3.Connect the other end of the audio cable to an Extron amplifier that is capable of remote volume control (such as the XPA 1002).

Connecting Power to the MLC

See “F PWR (power) connector,” earlier in this section, for important cautions about power supplies. Connect the provided 12 VDC, 1 A power supply to the MLC as follows:

1.Wire one of the supplied 2-pole captive screw connectors as shown below.

Smooth Ridges

A A

SECTION A–A

3/16” (5 mm) Max.

Power Supply Output Cord

Figure 29. Wiring the Power Connector

MLC 60 Series MediaLink Controllers • Features, Installation, and Operation 26