Installing the Fishfinder 400C

Connecting to a NMEA device

You can connect the Fishfinder 400C to another piece of NMEA compatible electronic equipment, such as a Garmin GPS (Global Positioning System) device. If equipped with a capable transducer, the Fishfinder 400C can send depth, temperature, and speed information. Refer to the wiring diagrams on page 11 for connecting the Fishfinder 400C to NMEA compatible devices.

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

1.Follow the voltage source installation steps (see page 10). 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 unit for wire identification.

2.Connect the Blue (NMEA Out) wire from the Fishfinder 400C to the NMEA In wire on the GPS/NMEA unit’s wiring harness.

3.Turn on the Fishfinder 400C NMEA Output setting (page 23). For Garmin GPS units, set the communications interface to NMEA/NMEA, NMEA In/NMEA Out, or NMEA.

Interfacing with NMEA

The Fishfinder 400C allows for NMEA 0183, Version 3.01 output with a compatible GPS or navigation device. You must set NMEA Output On to send data (page 23).

The SDDBT, SDDPT, SDMTW, SDVHW, SDWPL sentences are sent in NMEA 0183, Version 3.01 output from the Fishfinder 400C.

You can purchase complete information about National Marine Electronics Association (NMEA) format and sentences from:

NMEA

Seven Riggs Avenue

Severna Park, MD 21146 USA www.nmea.org

Installing the Fishfinder 400C to a Garmin CANet

The Fishfinder 400C is a CANet-compatible sonar device. Using the CANet (if applicable) optimizes the performance of CANet-compatible units, allowing sonar information from the Fishfinder 400C to be shared with up to two CANet compatible Garmin GPS units. A standard NMEA connection only allows depth, temperature, and speed information to be sent to a single GPS device, whereas a CANet connection provides full sonar readings, including Ultrascroll™, so you can view and control the same information on your compatible GPS unit(s) as you can on your Fishfinder 400C.

Note: To use the Garmin CANet with your Fishfinder 400C, you must obtain a CANet Kit. Contact your Garmin dealer, or visit www.garmin.com.

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Fishfinder 400C Owner’s Manual