Figure 4.5: Serial Settings Page: Serial Parameters; I/R Control - Avocent Emerge MPX Installer/User Manual

52 MPX Extender Installer/User Guide
4. Choose the serial data size for the local serial port from the Data Size drop-down list.
5. Choose the number of serial stop bits for the local serial port from the Stop Bit drop-down list.
6. Choose the serial parity for the local serial port from the Parity drop-down list.
7. Choose the serial flow control for the local serial port from the Flow Control drop-down list.
8. Click Apply to save the changes.

Figure 4.5: Serial Settings Page: Serial Parameters

I/R Control

Each MPX extender includes an IR(rx) receiver and an IR(tx) port. The IR(rx) receiver is built into
MPX1000 products. MPX1500 products feature a 2.5mm jack for connection of an optional (part
number IR-RX) external IR receiver. All MPX products feature a 3.5mm jack for connection of an
external dual IR(tx) emitter. IR control strings generated from a remote controller may be
forwarded across the extension network or locally forwarded from the IR(rx) to the IR(tx) port on
the same MPX unit.
IR extension permits a presenter to control a source device from the location of the display device.
Local loopback of IR data permits an administrator to manage display devices from the equipment
rack and/or a presenter to control a display device from the location of the display.
Similar to serial data, IR data is broadcast across the extension network from an MPX transmitter to
all bound receivers. Bi-directional IR data is limited to the transmitter and the primary receiver.
For the sake of clarity, the flow of IR data from the IR(rx) receiver to the IR(tx) port on the same
MPX unit shall be referred to as IR local loopback and the flow of IR data across the extension
network shall be called IR extension.
IR functionality works as follows:
• Upon boot up, an MPX transmitter will forward IR data detected at its IR(rx) receiver to all
bound receivers across the extension network. This flow cannot be disabled.