Be aware that some NMEA equipment suppliers, particularly
Garmin, use the 12 VDC system ground as the signal ground. Haven't done enough work with
Furuno to know if they do the same thing. IIRC, it is because some vendors implement NMEA 0183 as a RS-232 port and others implement it as an RS-422 port.
__________________
Sailingdog
Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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