> > How in hell a *cable* can result in garbage beats me. I would expect > data, or no data - not garbage data...
Two things spring to mind : 1) Open-circuit signal ground, with the ground therefore completed by mains earth. I had a nasty version of that years ago, the system would work with a VT100 (at lower baud rates), but not at all with my Tandy M100 laptop. 2) Too much stray capacitance. Given a sensible output impedance on the driver (and there is a specification for this), this will round off the pulses, make narrow pulses too small, and so on. This is the more likely cause I think. How long was the defective cable? -tony
