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Author Topic:   NMEA-0183 Serial Data Connection: Lowrance GPS to Standard-Horizon PS-1000
Ablewis posted 08-14-2008 09:08 PM ET (US)   Profile for Ablewis   Send Email to Ablewis  
I have a Standard Horizon PS-1000 radio and I need help connecting it to my Lowrance LMS-334c DF iGPS unit so that the DSC distress call function [will have a GPS position provided to it via an NMEA-0183 serial data connection]. On my Lowrance unit I have a NMEA data cable with four wires:
Orange: Receive
Yellow: Transmit
Blue: This unit does not use the blue wire
Silver: Ground

While the Lowrance unit has one wire for receive and one wire for transmit, the radio appears to be needing both a positive and a negative wire [NO!--These are not polarities in terms of positive and negative, they are NON-INVERTING (+) or INVERTING (-) inputs--jimh) for both input and output. The radio has blue (input +), Green (input -), Gray (output +), Brown (Ouput -).

The Radio's Blue and green input wires are to be connected to the output wires for the GPS (transmit, I am assuming). The radios Gray and Brown output wires are to be connected to the input wires for the GPS (Receive I am assuming).

I am also a little confused as to whether or not I need to use the 3-wire "NMEA 2000 Power Cable" on the Lowrance unit. I am not currently operating anything other then the Lowrance unit, so these wires have not been used.

Any suggestions on wiring?

jimh posted 08-14-2008 09:21 PM ET (US)     Profile for jimh  Send Email to jimh     
You will have to figure out the colors. I don't do colors. I just do signals:

Connect the GPS NMEA-out (+) (which appears to be called TRANSMIT on your LOWRANCE device) to the RADIO NMEA-In (+) .

Connect the Radio NMEA-In (-) to the battery negative distribution that feeds the RADIO, that is, the black power wire, somewhere near the device. Or, if easier, connect the Radio NMEA-In (-) to the LOWRANCE data cable SHIELD wire.

Insulate the rest of the serial data signal wires so they do not short together or to ground.

Refer to the instruction manual for your LOWRANCE device for instructions on how to connect the NMEA-2000 Network powering. It gives very detailed and explicit instructions.

Chuck Tribolet posted 08-15-2008 03:30 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
You aren't using NMEA 2000, so don't worry about the NMEA-2000
Power Cable.


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