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3.1.14 Audio trim & alrm
Setting and display screen.
The following parameters can be set by the user: pilot tone level, pilot tone phase,
clipping voltage.
It is possible to monitor the audio board model (BB board model, automatically
detected, or STEREO view as default) and the firmware version of the audio board (BB
Firmware).
The alarms connected to the audio section are set. The management uses the TC/TS
connector.
The alarm is activated when it is below the threshold set (Modulation), after the set
period of time (Dlay Alarm Timer).
The user can choose from five operating modes (Bad mod.) : DISABLE, NO AUDIO, SWAP,
FAULT, FLT/SWAP.
3.1.14.1 Audio “Disable” alarm
By setting the “Bad mod.” field to “DISABLE”, the alarm is completely deactivated wi-
thout needing to change the levels (Modulation, Dlay Alarm Timer).
3.1.14.2 “No audio” audio alarm
By setting the “Bad mod.” field to “NO AUDIO”, the default setting is kept, i.e. “No Au-
dio” on pin 23 of the TC/TS connector.
If the transmitter is inside an N+1 system, the “No Audio” signal is not available at the
exchange unit.
3.1.14.3 “Swap” audio alarm
By setting the “Bad mod.” field to “SWAP”, the “No Audio” line (pin 23) is exchanged
with the “Warning” line (pin 13) on the TC/TS connector.
If the transmitter is inside an N+1 system, the “No Audio” signal is available at the
exchange unit.
3.1.14.4 “Fault” audio alarm
By setting the “Bad mod.” field to “FAULT”, the “No Audio” line (pin 23) is in “or” condi-
tion with the “Fault” line (pin 24) on the TC/TS connector.
If the transmitter is inside an N+1 system, the exchange unit activates the switching in
the presence of No Audio.
3.1.14.5 “Flt/Swap” audio alarm
By setting the “Bad mod.” field to “FLT/SWAP”, there is a combination of the two
“Swap” and “Fault” modes.
In this way, if the transmitter is inside an N+1 system, the “No Audio” signal is available
at the exchange unit and the exchange unit actives the switching.
Instructions for use
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