unruh writes: > He said he was using 80 ft of cat 5 cable. That is 100 ohm cable. To > get rid of reflections he needs a 100 ohm termination. This has > nothing to do with 232.
RS232 is not intended to be used with speeds and cable lengths such that transmission line effects are significant. When properly implemented (it usually isn't) risetime is limited with rc networks to prevent ringing and the output impedance of the drivers is such that they can withstand a short circuit without damage. -- John Hasler [email protected] Dancing Horse Hill Elmwood, WI USA _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
