> Van: Robert Mellgren <robert.mellgren@VALHALLA.ORNSKOLDSVIK.COM>
> Aan: PICLIST@MITVMA.MIT.EDU
> Onderwerp: Signal loss!?
> Datum: zaterdag 15 mei 1999 20:55

Hello Robert,

> hi there i seem to recall that RS232 transmissions should be done over
short
> cables. since there are only -3/+3v levels, is this true.

What you are describing is their _absolute minimum_ (output) voltage to be
considered RS232.  Its absolute maximum (output) voltage is (AFAIK) +16/-16
volt.  It's inputs are created to accept anything between +2/-2 to +16/-16
volts.  So Cranking-up the _output_ voltage to +12/-12 is no problem, and
can (should) be connected directly to another RS232 input.

Greetz,
  Rudy Wieser