[ntp:questions] OT: GPS18x LVC failure

John Hasler jhasler at newsguy.com
Sun Oct 11 17:29:11 UTC 2009


uwe writes:
> RS232 line idle is TX active/high.  TX being inverted that tranlates
> to nominally -12V ( i.e -3 ... -25 at the receiver )

Yes, but many devices just use 0 for mark and +5 for space and hope.  It
sort of works.  Sometimes.  Usually.
-- 
John Hasler 
jhasler at newsguy.com
Dancing Horse Hill
Elmwood, WI USA




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