8.3. FM Info Screen
The FM Info Screen summarizes key parameters for the audio that resides on the RF carrier of the FM
signal, as illustrated in the sample screen below:
The maximum frequency deviation from the carrier centre frequency is
illustrated on this level bar. Typical maximum deviation, required by Industry
Canada or FCC, is 75 kHz to avoid bleeding into adjacent channels. 100%
represents a full 75 kHz deviation
Right level bar represents the audio level on the right audio input channel.
Left level bar represents the audio evel on the left audio input channel.
The temperature is measured on top of the heatsink near the final transistors
and displayed here. User can toggle between Celsius and Fahrenheit from
the Settings Screen. In the event that this temperature exceeds the factory
set trip point, the RF carrier level will fold back to protect the unit. Common
causes for high temperatures can include failed internal fans or air
conditioning in the broadcast facility or a blocked fan.
Controls from FM Info Screen