Company Confidential
40
Raveon Technologies Corp.
and use the measured DC level as the DC input, set
AFDC
to 0 to have the M8S
automatically find the DC input bias and compensate for it.
The
AFLVL
command sets the DC gain of the TX audio input. With it set to
100%, an audio signal with a peak-to-peak value of 500mV will p/- 2kHz
of FM deviation. With
AFLVL
set to 200, 250mV p-p input will give 2kHz p-p of
FM deviation.
The
AFLIM
command sets a hard FM deviation limit, which will stop the M8S
from deviating the FM carrier beyond the preset limit with the input TX audio
exceeds a threshold that would have cause the M8S or over-deviate.
Raveon suggests the
AFDC
,
AFLVL
, and
AFLIM
always be adjusted and
calibrated by trained radio technicians familiar with setting FM deviation gain and
FM limiters.
The
TXTOT
command sets the transmit time-out-timer (TOT). The TOT protects
the radio and the system from damage and interference due to accidental over-
keying of a transmitter. Set the
TXTOT
value to the maximum number of
seconds a TX audio pass-through transmission should ever take. If the
TXTOT
times-out, the M8S will automatically un-key, and not re-key again until the PTT
line is negated, and then some time re-asserted.
