Where are these cables exactly? Perhaps they aren't exactly parallel cables but special purpose cables using db-25 ends. However, i thought i saw the signal specs for serial nrz-l or nrzi to be ...
It's perfectly safe to run Cat5 parallel to power lines (or any other EMI source). The twisting of the wire pairs cancels out almost all interference.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results