Extron electronic MLC 52 manual Powering the Display Device On and Off, Powering on

Operation, cont’d

Wiring and connections for the MLC 52 VC models

Connect the cables to the MLC 52 IR VC or MLC 52 RS VC controller with the MPA Series amplifier as shown in the diagram below and on page 2-15.

RS-232 or IR Projector Control

	E
	4
	3	ON
	2
	1	1	2	3	4
Tx	IR OUT	GND	IR IN	GND		+ 12V

VOL/

MUTE

+ 10V

MLC 52 VC Series

COMPUTER	IN-1	Y/C	VIDEO
AUDIO
PC
COMPUTER	IN-2
AUDIO		AUDIO
R		L	Y
G	H/Cs	R	PB/B-Y
B	V		PR/R-Y
COMPUTER	CONTROL
OUT
		REMOTE	AUDIO OUT

AV IN

INPUTS		MPA 122
C	US	OUTPUTS
		4/8 Ohms

POWER	L
			REMOTE
	R	R	10V	L	R
12V	L
3A MAX			VOL/MUTE

	MPA 122
	RS-232
Projector	To Loudspeakers
	Any input on the MPA
	can be used.

Wiring an MLC 52 VC controller and an MPA series power amplifier to a typical projector

Audio is now controlled from the MPA instead of from the projector. For best results, ensure that the audio volume of the projector is set to maximum (assuming that the monitor output for audio is variable).

Configuring the MLC 52 IR and MLC 52 RS Vol buttons

By default, the MLC 52 has two buttons on the front panel programmed for volume control (Vol > and Vol <). However, on the MLC 52 IR and RS VC models, these buttons are not needed for volume control and can be programmed for other uses. To reprogram the Vol buttons, you can use IR learning (see “Configuring using IR learning,” earlier in this chapter,) or the Windows-based configuration software (see chapter 5, “Serial Communication”).

Powering the Display Device On and Off

The Display On and Off buttons on the MLC 52 front panel are used to turn the projector or other display on and off.

Powering on

Press and release the MLC 52’s On button to turn the display device’s power on. The MLC sends an RS-232 or IR power-on command to the projector, and the On button blinks for 4 seconds, then remains steadily lit.

3-12 MLC 52 Series MediaLink Controllers • Operation