Extron electronic MEDIALINK MLC 52 - Manual (Page 46)

MLC 52 Series MediaLink Controllers • Special Applications 4-2
Special Applications
This chapter describes some special types of applications that represent unique
conditions. For the MLC 52 to operate properly in these situations, it is important
that the controller be configured correctly. On the following pages, three
application examples are described, along with their requirements for the MLC 52.
Application 1: Using Multiple Sources with an MLC 52
Following is an example of an application in which the system contains more than
two inputs. This system has two PC inputs (a laptop and a desktop) and two video
inputs (a VCR and a DVD).
R/Cr
RGB 2 IN
RGB 1 IN
S-VIDEO IN VIDEO IN L R L R
G/Y B/Cb H V
AUDIO
AUDIO AUDIO
RGB OUT
Laptop
(on RGB 1 input)
Projector
Projector Inputs
PC
(on RGB 2 input)
DVD
(on S-Video input)
VCR
(on Video input)
Application 1: Projector with more than two inputs
For best results, choose a projector that has dedicated audio and video input
connectors for each PC and each video source. Do not use a projector on which
multiple video inputs share one audio input.
The MLC 52 must be configured differently, depending on the type of projector
remote control that will be used, and on whether the MLC will use IR or RS-232
projector control. Because each button on the MLC 52 can store up to four
commands per button, the PC and Video buttons on the MLC should be
programmed as shown in the illustrations on pages 4-4 through 4-6.
• IR control: If the projector is to be controlled by the MLC 52 using IR, its IR
remote control will have one of the following types of button configurations
for video selection:
 Projector remote control type A: A different remote control button is
used for each video input source. Each button selects the input source
with the signal type that matches the button’s label (for example, the
RGB1 button might select the laptop computer; RGB2, the desktop PC.)
 Projector remote control type B: One remote control button is used for
all video formats (RGB, S-video, and/or composite video). This type of
button must be pressed repeatedly to toggle through all the inputs with
the same format.
• RS-232 control: If the projector is to be controlled by the MLC 52 RS via
RS-232 commands, the projector typically has a discrete (specific) command
for selecting a particular video input. That is, the projector does not have an
RS-232 command to toggle through its video inputs. See chapter 5, “Serial
Communication,” for procedures for RS-232 programming.