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Connecting to a NMEA device

You can connect the Fishfinder 300C to additional NMEA 0183-compatible electronic equipment, such as a Garmin GPS (Global Positioning

System) device. If equipped with a capable transducer, the Fishfinder 300C can send depth, temperature, and speed information. Refer to the

Fishfinder 300C wiring diagram for connecting the Fishfinder 300C to NMEA 0183-compatible devices.

To install the wiring harness to a GPS or other NMEA 0183 device:

1. Follow the instructions in Step 4: Install the Wiring Harness on page 6. For Garmin units, the ground (black) wires serve as NMEA

ground and must be attached together or on the same terminal. Refer to the wiring diagram of your GPS or NMEA 0183 device for wire

identification.

2. Connect the blue (NMEA 0183-OUT) wire from the Fishfinder 300C to the NMEA 0183-IN wire on the wiring harness of the other NMEA

0183 device.

3. Turn on the Fishfinder 300C NMEA

4. Configure the other NMEA 0183 device according to the manufacturer's instructions.

Interfacing with NMEA

The Fishfinder 300C allows for NMEA 0183 Version 3.01 output with a compatible GPS or navigation device. You must set NMEA Output to

On to send data.

The Fishfinder 300C sends the SDDBT, SDDPT, SDMTW, SDVHW, SDWPL sentences in NMEA 0183 Version 3.01 output.

Fishfinder 300C Installation Instructions

(Red) + Vdc

(Black) Ground

(Blue) NMEA 0183 OUT

(Yellow) Alarm Low

Fishfinder 300C Wiring Diagram

Output setting. (From the Home screen, select Configure > System > NMEA

RXD +

RXD -

To transducer

dc power source

NMEA device

(optional)

Alarm relay (optional)

100 ma maximum coil current

Output > On.)