Specifications

International Radio and Electronics Corporation
25166 Leer Drive Elkhart, Indiana 46514 • 574–262–8900 • www.irec1.com
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Control Knob : A push-and-turn control to access all settings and parameters. Use in
conjunction with Main Display.
Main Display : The FMX Main Display is a four line alpha-numeric display. All critical
transmitter parameters, controls and alarm settings are displayed on the Main Display.
Status Indicator Ring : Critical transmitter status is displayed by the illuminated Status
Indicator ring surrounding the Control Knob. The following colors indicate transmitter
status:
• Orange, flashing-Start up
• Green-on the air and transmitting
• Yellow-an active fault is present
• Red-fault, RF power below 2 watts.
Audio monitor : Use the audio monitor jack to test the quality of the program audio at
three different points in the audio path. The monitored point is selected with the main
control and display.
• RF monitor - an internal receiver board for on-air monitoring
• Input audio - monitor the audio at the XLR input jacks
• Audio Proc Out - a demodulated sample of the composite audio
3.2.2 DC Breaker
The DC breaker, on the rear panel, must be on (up) for transmitter operation, even when
using AC power. Electrically, the DC breaker is located immediately after diodes which
isolate the DC and AC power supplies.