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Note (7): The Device provides 50 milliseconds intervals between outgoing
NMEA 2000 messages that are generated by more than one
NMEA 0183 sentence. For example, a message with PGN 129025
is generated only once if RMC and GLL are received within
a 50 millisecond interval, and twice if the time between GLL
and RMC is more than 50 milliseconds.
Note (8):
Sentences with no significant data (or data marked as invalid) may
not be translated to NMEA 2000 messages. NMEA 0183 sentences
with invalid check sum are ignored.