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Operation, cont’d
MLC 52 Series MediaLink Controllers • Operation3-4
2
Input selection buttons — These buttons are preprogrammed to select input
sources. By default, they are in input mode; that is, only one of them may be
selected at a time. If you want these buttons to operate independently of
each other, use the Windows-based control software to remove the group
configuration from them.
The input buttons are prelabeled for convenience. You can relabel them using
the other labels that are provided. See “Replacing button labels” in chapter 2,
“Installation,” for the relabeling procedure.
3
Configuration port — This port is used for configuring and communicating
with the MLC. Through this port, the MLC receives commands issued via
the Windows-based configuration software on your computer.
Use a 2.5 mm TRS to 9-pin D-sub connector cable to connect the MLC to your
PC via this 2.5 mm female TRS connector.
This cable is an optional accessory that can be ordered from Extron (part
#70-335-01)
The protocol for this configuration port is as follows:
• 9600 bits/second
• 8 data bits
• 1 stop bit
• No parity
5
1
9
6
Sleeve (Gnd)
Ring
Tip
9-pin D Connection TRS Plug
Pin 2 Computer's RX line Tip
Pin 3 Computer's TX line Ring
Pin 5 Computer's signal ground Sleeve
2.5 mm connector cable for the configuration port
See chapter 5, “Serial Communication,” for details about using the
configuration software to set up the system, and about downloading drivers.
4
Volume adjustment buttons — (Standard MLC 52 IR and MLC 52 RS only)
These two buttons are used to adjust the volume of the projector or display up
and down.
If your A/V system does not require the volume up and down function (for
example, if the MLC is configured with the VC faceplate containing the
volume control knob), you can reprogram these buttons for input selection or
additional display device functions.
The volume buttons are prelabeled for convenience. They can be changed to
other labels that are provided. See “Replacing button labels” in chapter 2,
“Installation,” for the procedure.
5
Volume control knob — (MLC 52 IR VC and MLC 52 RS VC only) The
volume control knob on the VC models enables you to adjust the volume of
the display device via the MPA or other power amplifier.