GR-91
GPS Module series
THE PRO NAME IN GPS
HOLUX Technology, Inc.
No.1-1, Innovation Rd.1, Hsinchu Science Park, Hsinchu, Taiwan(R.O.C)
TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:[email protected] http:www.holux.com.tw
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5. User Interface
GR-91 provides 2-wire digital UART port for communication of GPS position
data using NMEA protocol or extension protocol. UART port is capable of 4800
to 115200 baud rate.
5.1 NMEA Protocol
GR-91 is default to support standard NMEA-0183 protocol. In addition, a
series of SiRF extensions have been developed that can be used to provide
extended capabilities common to many applications.
NMEA Protocol format
GR-91 is capable of supporting following NMEA formats:
NMEA RECORD
Description
GGA
GPS fix data
GLL
Geographic
GSA
GNSS DOP and active satellite
GSV
GNSS Satellites in view
RMC
Recommended minimum specific GNSS data
VTG
Course Over Ground and Ground Speed
ZDA
Time & Data
