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7Fishnder 300C Installation Instructions
(Red) + Vdc
(Black) Ground
(Blue) NMEA 0183 OUT
(Yellow) Alarm Low
To transducer
RXD +
RXD -
dc power source
NMEA device
(optional)
Alarm relay (optional)
100 ma maximum coil current
Fishnder 300C Wiring Diagram
Connecting to a NMEA device
You can connect the Fishnder 300C to additional NMEA 0183-compatible electronic equipment, such as a Garmin GPS (Global Positioning
System) device. If equipped with a capable transducer, the Fishnder 300C can send depth, temperature, and speed information. Refer to the
Fishnder 300C wiring diagram for connecting the Fishnder 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
identication.
2. Connecttheblue(NMEA0183-OUT)wirefromtheFishnder300CtotheNMEA0183-INwireonthewiringharnessoftheotherNMEA
0183device.
3. TurnontheFishnder300CNMEA Outputsetting.(FromtheHomescreen,selectCongure > System > NMEA Output > On.)
4. ConguretheotherNMEA0183deviceaccordingtothemanufacturer'sinstructions.
Interfacing with NMEA
The Fishnder 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 Fishnder 300C sends the SDDBT, SDDPT, SDMTW, SDVHW, SDWPL sentences in NMEA 0183 Version 3.01 output.