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PC Cable diagram

The following information describes how to directly link GPS to your computer.

The Com 1 port on your computer complies with RS 232 type electrical characteristics, a standard generally used in marine electronics by most existing GPS.

Consequently, the connection of a GPS to the computer is generally limited to a 2-wire connection with a NMEA 183 output from the GPS to input (RxD) and ground (Gnd) pins of the computer.

Connections at serial port of the computer:

25 Pin Type D Connector

Pin
Signal
Information
2
Data transmission Tx
Connection to automatic pilot
3
Data reception Rx
Connection to GPS
7
Ground Gnd

9 Pin Type D Connector

Pin
Signal
Information
2
Data reception Rx
Connection to GPS
3
Data transmission Tx
Connection to automatic pilot
5
Ground Gnd

Note: if the NMEA 183 standard specifies RS 422 type electrical characteristics, nearly all manufacturers adhere to the RS 232 standard.

Caution! If your electronic equipment complies with RS 422 type electrical characteristics, you cannot use the previous process; please contact your dealer.