[time-nuts] FASTRAX GPS
dmendesf at gmail.com
Wed Jul 2 08:33:23 EDT 2014
Em 02/07/2014 05:04, Hal Murray escreveu:
> If you want to go farther or faster, it's probably wise to shift to
> differential signaling.
This. always use 485/422 drivers (2 pairs, one in each direction) + 1
pair for VCC + 1 pair for GND in a CAT-5 cable. If you are carefull you
can choose the pinout in a way that if someone plugs it into an ethernet
port it won´t blow anything. The limit becomes the power, because the
485 can drive >1200 meter cable if you use a good tranceiver (i´ve tried
600m, it works flawlessy).
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