Extron electronic MEDIALINK MLC 52 - Manual (Page 53)

4-9 MLC 52 Series MediaLink Controllers • Special Applications
Application 3: Controlling Projectors That Have
Multi-coded IR Functionality
Certain projectors, such as Philips projectors, have multiple IR codes for the same
function. Projectors with multi-coded IR functionality issue two commands for
each IR remote control button. Command “A” is initiated by the first press of the
button; command “B,” by the second press. Because the buttons on the MLC 52 can
store up to four commands, it is ideal for projectors of this type.
If controlled via RS-232, projectors that have multi-coded IR functions typically
have a specific RS-232 command that selects or performs each desired function.
Therefore, there is no command “A” or “B” for RS-232 control.
Configuring the MLC 52 for multi-coded IR functionality
This section provides instructions for using IR learning to program multiple input
selection commands onto the MLC 52’s buttons from two common types of hand-
held projector remote controls that have multi-coded IR functionality.
For best results, select a projector that has a dedicated audio and video input
for each source used in the system. Video and audio should not share an input.
Projector remote control type A (application 3)
This remote control has a discrete button for each input. Two buttons are
designated for RGB inputs, one for S-video, and one for video (composite). Each of
these input selection buttons on the type A remote control has a command “A” and
a command “B” coded on it.
Following these steps, use IR learning to program the input selection commands
from the projector’s type A hand-held remote control onto the MLC’s PC and Video
buttons.
Programming RGB inputs — projector remote control type A
1 . Place the rear panel configuration DIP switch #1 in the On (up)
position to enable learning mode.
2 . Using IR learning, program command “A” from the RGB 1 input selection
button on the projector’s remote control into memory block #1 of the
MLC 52’s PC button as follows:
a . Press the PC button on the MLC front panel. The button blinks,
indicating that the MLC is ready to learn the command. On the rear
panel, the bottom IR learning LED should be flashing.
b . Within 5 seconds (while the PC button on the MLC 52 is blinking), press
the RGB 1 button on the projector’s remote control. The MLC has
learned command “A” for RGB 1.
When a command has been successfully learned, the IR learning LEDs on the
MLC rear panel flash in rapid progression from the top to the bottom, then
back to the top.
3 . Program the input selection command “A” from the RGB 2 input selection
button on the projector’s remote control into memory block #2 of the
MLC 52’s PC button as follows:
a . Press the PC button on the MLC front panel. The button blinks,
indicating that the MLC is ready to learn the command. On the rear
panel, the second LED from the bottom flashes.
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ON
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