Haicom HI-405BT User Manual - page 21

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SOFTWARE INTERFACE

This section describes the details of the serial port commands 

through which the HI-405BT 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.

6.2 NMEA OUTPUT MESSAGE SPECIFICATIONS

The HI-405BT 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