Haicom HI-505SD User Manual - page 23
SOFTWARE INTERFACE
This section describes the details of the serial port commands
through which the GPS module is controlled and monitored. The
serial port commands allow users to set the receiver
parameters, configure output message type, and retrieve status
information. The baud rate and protocol of the host COM port
must match the baud rate and protocol of the GPS receiver
serial port for commands and data to be successfully
transmitted and received. The default receiver protocol is
4800bps, 8 data bits, 1 stop bit, and none parity.
NMEA OUTPUT MESSAGE SPECIFICATIONS
The GPS back card supports NMEA-0183 output format as
defined by the National Marine Electronics Association
(http://www.nmea.org). The currently supported NMEA
messages for GPS applications are:
GGA
GLL
GSA
GSV
RMC
VTG
Global Positioning System Fix Data
Geographic Position Latitude / Longitude
GNSS DOP and Active Satellites
GNSS Satellites in View
Recommended Minimum Specific GNSS Data
Course Over Ground and Ground Speed
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