Extron electronic MEDIALINK MLC 52 - Manual (Page 19)

2-9 MLC 52 Series MediaLink Controllers • Installation
1 IR learner/transmitter — These sensors allow for IR control of the MLC and
for IR learning. The two LEDs (one for transmitting, one for receiving) send
and receive IR signals, enabling the MLC to learn commands and clone
configurations from another MLC. The IR remote control must be pointed
directly at these LEDs for best results.
The MLC can “learn” IR commands in order to control the display device. IR
learning of device control codes is necessary only if there are no RS-232 codes
available for that device or if you need to customize the driver. The IR
learning procedure is discussed in the “Configuring using IR learning”
section of chapter 3, “Operations.”
You can also perform IR learning via the Windows-based configuration
software. See “Performing IR learning via software,” in chapter 5, “Serial
Communication.”
2 Enable Macro LED — The LED located immediately above the four green IR
LEDs is labeled E, for Enable Macro. This LED lights amber when you place a
button in macro mode. (See “Setting up macros,” in chapter 3, “Operations.”)
3
Configuration switches — When set to “on,” these DIP switches place the
MLC in IR learning mode or data transfer mode, or disable IR repeats.
• Switch 1: Enables IR learning.
• Switch 2: Enables data transfer, such as cloning the MLC’s configuration
onto another MLC 52 (see “Configuring using IR data transfer,” in
chapter 3, “Operations”).
• Switch 3: Disables IR repeats during playback. For most applications,
this switch is placed in the off position.
Switch 4 is not used.
4
Volume control (VC faceplate only) connector — Connect this volume
control connector to an amplifier such as the Extron MPA 122 or MPA 181T to
enable the volume control knob on the MLC 52 to raise and lower the volume
on the display device via the amplifier.
5 Display control and power connector — This six-pole, 3.5 mm captive screw
connector is used for IR and RS-232 control of the display device and for DC
power. (See “Wiring the control connector,” in the next section, for
information on how to connect supported devices to the MLC.)
The RS-232 projector control port is present on this connector but not
functional on the IR models. This port is functional only on the RS models.
6
IR learning indicators — Each button on the MLC front panel has four
memory blocks, which can be programmed with up to four IR (or RS-232)
commands. The IR learning indicator LEDs provide visual feedback
indicating the following:
• Which of the four memory blocks contains a command
• Which of the four memory blocks is ready to be programmed or
configured
• The IR learning status of the controller
See “Configuring for IR learning,” in chapter 3, “Operation,” for details.