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C-4 Acutime 2000 Synchronization Kit User Guide
NMEA 0183
C
C.3 NMEA 0183 Message Options
The Acutime 2000 can output any or all of the messages listed in
Table C-2. When NMEA is chosen, its default configuration (as
shipped from the factory) outputs two messages: GGA and VTG.
These messages are output at a one-second interval with the
“GP” talker ID and checksums.
!
Note – The user can configure a custom mix of the messages listed
in Table C-2. See Port A (Timing), page 5-10, and TSIP command
packets 0xBC, 0x7A, and 0x8E 0x26 in Appendix A, Trimble Standard
Interface Protocol, for details on configuring NMEA output.
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Warning – If too many messages are specified for output, you may
need to increase the unit’s baud rate.
Table C-2 Acutime 2000 NMEA Messages
Setting Message Description
Default GGA GPS fix data (NMEA Version 2.1)
GLL Geographic position - Latitude/
Longitude
GSA GPS DOP and active satellites
GSV GPS satellites in view
RMC Recommended minimum specific GPS/
Transit data
Default VTG Track made good and ground speed
ZDA Time & Date