T.E.M. A07B500S Manual page 26

A07B500S manual
In this screen shot it' s possible to enter, if installed, the option of the modulation level automatic
control due to the audio signals: when the AGC is on, the maximum modulation value is checked at
75KHz varying the audio amplifiers gain; the dynamic is ±6dB and this is useful when the input
signal level is not sure.
4.4
For a wider explanation about the AGC operating see paragraph .
There is also a control on the modulation presence, since everywhere it isn' t allowed to transmit by
unmodulated carrier; after two minutes of modulation absence an alarm can be given and the power
can be disabled. When the modulation returns to the normal value, the alarm stops and the usual
operation is restored; in case of stereophonic transmission, the threshold for the modulation absence
is 10KHz, because of the subcarrier value.
4.6.15 By entering PAGE UP the following screen shot appear :
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