[time] garmin gps25-hvs questions

[Hal Murray]

> Note this is the HVS model, according to my reading of the pdf at
> http://www.garmin.com/manuals/GPS25LPSeries_TechnicalSpecification.pdf
> it swings from 0v to Vin, I was hoping this was good enough for the
> serial port. ...

Most RS-232 receivers will do the right thing if you feed them a TTL/CMOS 
signal.

I'd probably wire it up and see if it worked.

Buzzard's circuit should work.  It inverts the signal.  So will the normal 
RS-232 level translator chips, like the MAX232

You can fix that in the config file, at least on some/most drivers.  You may 
have to fix it if you don't add the expected inversion.



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