Magellan GPS 310 User Manual download pdf (Page 38)

Connecting to External Devices

The GPS 310 is designed to interface to a PC or other devices

using a data cable. The GPS 310 continuously outputs

NMEA messages through the data port at a rate of every 1

second. The GSV message is output all the time including

when the receiver is not computing fixes. After the first fix is

computed, GSA, GLL, GGA and RMC messages are also

output. These messages contain position, time, date, satellite

position as well as other status information. These messages

can be used by a variety of navigation software packages

available for the personal computer.

If the receiver is computing fixes and has a route set (either a

GOTO or a multi-leg route) the RMB and APB messages are

also output. The RMB and APB contain information

(steering, distance to destination, etc.) used to navigate to the

route destination. These messages are used by autopilots and

marine navigation software.

Connecting the GPS 310 to a Personal Computer (PC)

Connect one end of the data cable to the back of the GPS 310

and connect the other end of the data cable (the end with the

DB9 connector) to the serial port on the personal computer.

Now any application that you run on your PC that accepts

NMEA messages will be able to receive that information from

your GPS 310.

NOTE: Be sure that your PC software is set to the COM

port that you connected your data cable to and that the baud

rate is set to 4800 baud.

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Magellan GPS 310 User Manual Page 38