Furuno NX-300 manual Interfacing, Grounding, External equipment, Input data sentence description

Grounding

•The ground wire (local supply) should be 1.25 sq or larger for Navtex Receiver. The ground wire should be as short as possible.

•The signal ground and frame ground are separated, however the power line is not isolated. Therefore, if connecting other equipment which has signal ground connected to frame ground, the earth lamp will light. Especially, for positive ground battery separate the frame ground of the external equipment from the earth. If not, the equipment may be damaged.

External equipment

The power supply port is commonly used for connection of external equipment such as navigation equipment or a PC. Refer to the interconnection diagram on page S-1 for connection.

6.4 Interfacing

This equipment can receive navigation data in RS-232C format. For example, it can receive position data from GPS navigator GP-31/GP-36 for display on its screen. If you want to connect equipment which outputs data in a format other than RS-232C, a level converter is required for interface. Consult FURUNO dealer for details.

Input data sentence description

GGA: GPS position fixing condition (time of fix, latitude, longitude, receiving condition, number of satellites used, DOP)

GLL: Latitude and longitude

RMB: Generic navigational information (cross track error, steering direction, starting waypoint no., destination waypoint no., latitude and longitude of starting waypoint, latitude and longitude of destination waypoint, range and bearing to waypoint, range and bearing from present position to destination waypoint, velocity to destination, arrival alarm)

ZDA: Time and date

6-4