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On Wed, 2 Jan 2008 15:54:59 -0800 (PST), luc wrote:
Hi folks, I'm trying to get my Garmin 982 NMEA 183 to talk to my newly installed Raymarine Pilot. There are two Garmin NMEA out wires, but one of them is ground. Since the pilot 'brain' is already grounded, do I need to attach the ground from the garmin to the ray pilot? The brain has two terminals for "in" and two terminals for "out". Makes some kind of sense that it should have two wires, but I don't understand the point of ground since it's all a common ground, pilot, garmin, all goes to battery negative. any suggestions? thanks Luc The "-" NMEA input lead on the autopilot should be connected to DC ground, and the GPS data out connected to the autopilot "+" input. Officially, NMEA-0183 should use a 2-wire connection, but many manufacturers only use a single-ended connection. -- Peter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca |
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