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+--- Thread: [DG] [DG] Autohelm 4000 interface w Garmin GPS48 (/showthread.php?tid=6641)
[DG] Autohelm 4000 interface w Garmin GPS48 - JohnWilbourne - 09-19-18 03:44 PM
The back of the Garmin has a four plug pin, and transmits NMEA 0183 there is data in (white) and data out (brown).
How should I connect these to the Autohelm control head?
I see that the Seatalk part has seven pins. I would like to use them since I have wind instruments and the ST1000 as a backup Autopilot. Thank you.
RE: [DG] Autohelm 4000 interface w Garmin GPS48 - Derek - Raymarine - Moderator - 09-20-18 06:49 AM
Hi John,
Which model of AUtohelm 4000 are you referring to? ST4000 or the older Autohelm 4000?
To get NMEA0183 data out of the Garmin 4 pin plug to connect to an autopilot, you will need to use the Brown data out connection as the Data out +ve and the power supply 0 volts connection as the common Data out -ve. It sounds like this model from Garmin does not use the conventional NMEA0183 twin wire connection, just making use of the power supply -ve as data out -ve instead.
regards
Derek
RE: [DG] Autohelm 4000 interface w Garmin GPS48 - JohnWilbourne - 09-23-18 07:20 PM
ST 4000, thank you
RE: [DG] Autohelm 4000 interface w Garmin GPS48 - Chuck - Raymarine - Moderator - 09-24-18 09:51 AM
You're welcome.