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serial commands and it will still transmit characters over the air, albeit with
some latency as it has to power-up the radio each time it wishes to transmit.
The
ATSM 0
command returns the M8 modem into the normal-operating
mode with the receiver and transmitter operational.
The factory default value for the
ATSM
setting is
0
. When
ATSM
is a zero,
the
M8
will not ever enter the LPM mode, and the DTR input signal is ignored.