Haicom HI-305III User Manual - 6.2 Software Interface

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6.2 SOFTWARE INTERFACE

This section describes the details of the serial port commands 

through which the HI-305III  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.

6.3 NMEA OUTPUT MESSAGE SPECIFICATION

The HI-305III 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: