"Uwe Klein" <> wrote in message news:[email protected]... > David J Taylor wrote: >> Inconsistent with the technical specification, which says 0..+5V, but >> consistent with what I measured. > > Hmm, > RS232 line idle is TX active/high. > TX being inverted that tranlates to nominally -12V > ( i.e -3 ... -25 at the receiver ) > > uwe
Agreed, Uwe. -5V is what I saw. It will be interesting to see what Garmin say, if anything. I'll check the replacement unit on the 'scope as well. Cheers, David _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
