Itel STL-SAT Changeover, User Manual

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19 Display Function
© 2018 ITEL SNC
Out: <STE,MON,MPX,FILT> channel currently on the air
Out: Mute no channel is aired because both are in alarm condition
Out: BYP! the output was bypassed to the MPX input for one or more internal malfunctions (see window
status / alarms)
Finally, the status of the timer is displayed for switching to the backup channel or, from the backup
channel, to the main channel.
Ctr:0
If swap channels are switched on (SwapChans: ON), the words "Main" and "Back" will alternately flash with
"Swap" to indicate this state.
You will see that the backup channel will be aired even if the main channel is valid.
The "Main" and "Back" labels will continue to indicate the channels that, under normal conditions, are the
main and secondary channels, respectively.
2.4.2 Changeover Setting Mode
In the second changeover submenu, you can set the various parameters that handle the exchange
conditions:
Audio Level:On/Off -audio level (can be set in percent by 100% in the THRESHOLDS window)
PI Code:On/Off -PI code verification, this on the incoming MPX signal, must be equal to the
internally generated code
RDS Quality:On/Off -Incoming RDS signal quality (can be set as a percentage in the THRESHOLDS
window)
Pilot Level:On/Off -pilot tone level that must be higher than 4KHz (the threshold is set to 3KHz)
MPX Noise:On/Off -signal / noise ratio level on MPX channel (adjustable in dB in the Noise
window)
SAT Dropouts:On/Off -dropouts detected on the stereo L-R audio channel, then from the SAT receiver
(Settable Sensitivity in the Dropouts window)
In the following menus are the setting parameters of each respective item.
2.4.3 Changeover Time Set
In the third Changeover submenu, Alarm Timings can set commutation times
Alarm tim eout:
timeout (in seconds) before the exchange is made once an alarm condition is detected.
Back Tim eout:
timeout (in seconds) to restore the main channel once the cause of the alarm has been
cleared.