Figure 4.6: Ir Flow: Transmitter To Receiver - Avocent Emerge MPX Installer/User Manual

• When an MPX receiver is selected as the primary receiver, IR data detected at its IR(rx)
receiver will be forwarded across the extension network to the MPX transmitter, where it will
be emitted to the source device through the dual emitter. This IR data will not be forwarded to
other MPX receivers. This flow cannot be disabled.
• The web interface of each unit offers an IR Local Loopback setting. This setting affects IR
local loopback only. Altering this setting has no effect upon the flow of IR data across the
extension network.
Figure 4.6 illustrates the flow of IR data from the MPX transmitter to a single MPX receiver. This
data, however, will be received by all bound receivers. This functionality allows an administrator to
send control strings such as on/off to display devices from the equipment rack.

Figure 4.6: IR Flow: Transmitter to Receiver

Figure 4.7 illustrates the flow of IR data from the primary MPX receiver to the MPX transmitter.
This allows a presenter to send control strings, such as play/pause, to source devices from the
location of the display device. A single IRB-100 dual emitter is supplied with the MPX transmitter.
Should it be necessary to control more than two source devices, Avocent offers the IRB-Y splitter,
which allows two IRB-100 dual emitters to be attached to a single MPX transmitter. Additional
IRB-100 emitters may also be purchased separately. The MPX transmitter, or receiver, is capable
of driving up to 4 emitters (two IRB-100s).
Chapter 4: Additional Functions 53