> > ... > > You are right, ribbon cables are not very good at carrying signals over > long cables. They will pick up too much noise if not shielded and suffer > often from significant cross-talk if too long.
A trick is to put ground in half of them, either odd or even. Then of course they get twice as expensive. > The "standard" old-school printer cables (the round ones) are often > shielded and twisted pair, which are actually quite good. Twisted pair is the best. > > > > For over 30 feet use some kind of differential signaling or fiber. > > Differential signaling or fiber is of course better, but very much more > expensive. You will also need to convert the signals on each end. Differential signal is the best but I do not how big difference will be against ground in one of the pins instead. For signal conversion I think RS-422 transciver/receiver is the choice, they are also readily available in different speeds. Ethernet cable is twisted pair and readily available. ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today.http://sdm.link/intel _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
