DR + GPS
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Lassen DR + GPS Reference Manual 39
NMEA 0183 MESSAGE OPTIONS
The DR GPS can output any or all of the messages listed in the table below. In
its default configuration (as shipped from the factory), the DR GPS outputs only
NMEA messages. Typically NMEA messages are output at a 1 second interval
with the “GP” talker ID and checksums. These messages are output at all times
during operation, with or without a fix. If a different set of messages has been
selected and this setting has been stored in Flash memory, the default messages
are permanently replaced until the receiver is returned to the factory default
settings.
NOTE The user can configure a custom mix of the messages listed in the table
below.

Table 4: NMEA Messages

Message Description
GGA GPS fix data
GSA
GPS DOP and active satellites
GSV GPS satellites in view
RMC
Recommended minimum specific
GPS/Transit data
VTG Track made good and ground speed