IR 452 • Setup and Operation
Setup and Operation, cont’d
2-16
IR 452 • Setup and Operation
2-17
Muting and unmuting
The MLC 104 does not have buttons that control muting and
unmuting on the display device. However, you can program
Mute On and Mute Off commands onto the MLC 104 using
the Global Confi gurator (GC2) software. (Visit the Extron Web
site at www.extron.com for information on ordering the GC2
software.)
Depending on the feature set of your display device, you can
program the MLC 104 to mute/unmute the video, audio, or
both.
To use the IR 452 to control muting/unmuting, press the Mute
On or Mute Off button in the Display section. Pressing these
buttons causes the DVCM 50 to send an SIS command (1M for
Mute On button or 0M for Mute Off button) to the MLC 104,
causing it to mute or unmute the display device.
Volume control on the MLC 104
To control the volume on the MLC 104 using the IR 452, press
the rocker button in the Display section. Pressing the up- or
down-arrow on this button causes the DVCM 50 to send a +V or
–V SIS command to the MLC 104, which responds by increasing
or decreasing the volume on the display device.
Remove the Volume label from the sheet of labels provided with
the IR 452, and affi x it above the arrow rocker button on the
IR 452 front panel as shown in the illustration below.
FRONT PANEL
TV/VCR
VOL
VOL
PC
VIDEO
CHANNEL
VOLUME
Labeling the MLC 104 Volume buttons on the IR 452
Buttons and commands used with the MLC 104
To control the MLC 104, you use the buttons in the Display and
Front Panel sections of IR 452, which are also used to control the
MLC 52.
The following table shows the SIS commands that are issued
from the DVCM 50 to the MLC 104 for each press of an IR 452
button, and the button that is activated on the MLC 104.
You must program the desired commands onto the
MLC 104's front panel buttons, using the Global
Confi gurator software, in order for the MLC to send the
correct command to the projector.
IR 452 Button
Name
IR 452 Overlay
Section
SIS Command
from DVCM 50
MLC 104 Button/
Function Activated
Power On
Display
1P
On
Power Off
Display
0P
Off
Vol
Front Panel
1!
Input selection button 1
PC
Front Panel
2!
Input selection button 2
Vol
Front Panel
3!
Input selection button 3
Video
Front Panel
4!
Input selection button 4
Volume Up
(arrow)
Display
+V
Volume control knob
Increase
Volume Down
(arrow)
Display
–V
Volume control knob
Decrease
Mute On
Display
1M
Audio/video muting on
(No button equivalent)
Mute Off
Display
0M
Audio/video muting off
(No button equivalent)
For example, the fi rst row of the table above shows that when
you press the Power On button in the Display section of the
IR 452, the signal sent to the DVCM 50 is interpreted as the SIS
command
1P
. This command is sent to the MLC 104 to activate
the button that is labeled On (in the Projector section). The MLC
104 responds by issuing the command to the projector to turn
on.
Once you have programmed and labeled the buttons on
the MLC 104, you should relabel the IR 452 buttons
to indicate the commands they will initiate on the
MLC 104.
