"David Lord" <> wrote in message news:[email protected]... > David Lord wrote: >> David J Taylor wrote: >>> OT: GPS18x LVC failure >>> >>> My GPS18x LVC stopped working a couple of days ago. There appears to >>> +5V going into the unit, and the serial output is stuck around -5V >>> with no signs of data on the 'scope. Garmin have accepted the unit > > I'm guessing you hit (-) rather than (+), otherwise something > odd as with my unit the supplies are +5V and 0V, output spec > is 0V to +5V. Where was the -5V generated? If the -5V was real > then it would indicate some sort of internal fault. > > David
Yes, David, I meant minus rather than plus. It was on the serial output lead, unloaded, what I would call TX data. Checked with a 'scope rather than a meter as I was looking for data. Just checked, and the Invert Channel switch was not set. Possible I made a mistake. You are quite correct on the specs, though. Cheers, David _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
