[time-nuts] GPDSO is working
Chris Albertson
albertson.chris at gmail.com
Sat Jul 13 05:12:32 UTC 2013
>
> Whoever programmed the PIC in question inverted the signal for some
> reason. There should be no need for an inverter to use the MAX232
> devices, they knew what they were doing when they designed them.
If you have an inverted TTL serial signal then you can connect it straight
to n RS-232 port and there is a very good change it will "just work". They
call it "TTL level RS-232". BUt if you want to reliable drive a long
cable it is best to level convert to true RS-232. But today most "re-232"
is actually using zero and five volts.
--
Chris Albertson
Redondo Beach, California
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