One thing you could try is "AC-termination". A 100ohm (or 120 or 150 or whatever) in series with a 47nF capacitor from the signal wire to GND.
That way it's basically terminated during the transitions but won't pull a lot of current while idle.
Re: RS232 long distance cable termnation
One thing you could try is "AC-termination". A 100ohm (or 120 or 150 or whatever) in series with a 47nF capacitor from the signal wire to GND.
That way it's basically terminated during the transitions but won't pull a lot of current while idle.
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