Extron electronic MEDIALINK MLC 52 - Manual (Page 31)

3-3 MLC 52 Series MediaLink Controllers • Operation
• Input mode : Buttons in this mode are grouped together so that only one of
them can be active at a time. When one button is pressed and activated, it
becomes fully lit, while the other (inactive) button(s) are dimmed to 25%
brightness. When you press one of the buttons on the front panel that are in
input mode, all other buttons in input mode become inactive.
• Volume mode : This mode is available only on the standard (not VC) MLC
model, and only for the two buttons that are labeled Vol
>
and Vol
<
. When
an RS-232 driver that contains a volume table is part of the configuration,
pressing a button in volume mode accesses the driver’s volume table. Each
press of the button raises or lowers the volume of the display device by the
amount specified in the volume table. When in volume mode, the button
labeled Vol
>
always increases the volume; Vol
<
lowers it.
• Power mode : The two Display buttons at the top of the front panel, labeled
On and Off, are permanently fixed in power mode. This mode is similar to
input mode. The two Display buttons are mutually exclusive; if you press
one, the other one becomes unlit.
If you want to change the switch mode of any button, you must use the Windows-
based configuration software. (See “Setting up button modes and labels” in
chapter 5, “Serial Communication,” for the procedure.)
Front panel components
The diagrams below show the front panel features of the standard one-gang
MLC 52 and of the two-gang MLC 52 VC.
4
1
MLC 52
DISPLAY
ON
PC
VIDEO
OFF
VOL
VOL
2
3
MLC 52 IR and RS
MLC 52
DISPLAY
ON
PC
OFF
DVD
VCR
VOLUME
MLC 52 IR VC and RS VC
3
5
1
2
MLC 52 front panel
1 Display power buttons — The display power buttons turn power to the
projector or plasma display on and off. Because the display device can be
only on or off at a given time, these buttons are programmed in an exclusive
switch group. (A 2-second hold requirement can be enabled or disabled via
the configuration software; see “Entering display device power settings” in
chapter 5, “Serial Communication.”)