3-11
MLC 52 Series MediaLink Controller • Operation
•
The projector must have a
switched
audio output. On most projectors, this
connector is labeled as “Monitor Output” or “Audio Output,” as shown in the
following illustration. With a switched audio output, the projector outputs
the audio from the selected video source.
•
The system must incorporate an Extron MPA series audio amplifier.
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.
COMPUTER
OUT
AUDIO OUT
Projector
RS-232 or IR
Projector Control
Any input on the MPA
can be used.
To Loudspeakers
MPA 122
MLC 52 VC Series
P
R
/R-Y
P
B
/B-Y
REMOTE
AUDIO
AUDIO AUDIO
Y/C VIDEO
PC
R
R
L Y
G H/Cs
B V
RS-232
COMPUTER IN-2
CONTROL
COMPUTER IN-1
AV IN
Tx
IR OUT
GND
IR IN
GND
+ 12V
VOL/
MUTE
+ 10V
1
1
2
3
4
E
ON
2 3 4
POWER
12V
3A MAX
OUTPUTS
4/8 Ohms
INPUTS
L
R
L
R
REMOTE
10V
VOL/MUTE
L
MPA 122
R
C
C
US
US
Wiring an MLC 52 VC controller and an MPA series audio 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
).
im Vertrieb von
CAMBOARD Electronics
www.camboard.de
Tel. 07131 911201
Fax 07131 911203