Extron electronic manual MLC 52 Series MediaLink Controllers Installation

1IR 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.”

2Enable 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.”)

3Configuration 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.

4Volume 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.

5Display 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.

6IR 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.

MLC 52 Series MediaLink Controllers • Installation 2-9