From: andy pugh [mailto:[email protected]] > On 1 January 2016 at 16:16, Peter C. Wallace <[email protected]> wrote: > > SSerial is differential RS-422 at 2.5 MBits/sec and requires ~100 Ohm > > differential cable cable impedance. This usually means twisted pairs > > are required for TX and RX (the 5V/GND power connections are not > > critical)
> The pairs are twisted inside the individual foil screen with drain wire then there are 4 other small (0.14mm2) wires and two bigger > (0.5mm2) wires all inside an overall braided screen. > I suppose the thing to do is to try it and see. I have determined that the pairs fit nicely in an RJ45 connector, but I can't decide what to do about the 2x 5V and 2x 0V positions in the connector. Are the 0V and 5V contacts > commoned at the PCB ends, such that leaving two positions unpopulated in the RJ45 is OK? I only need enough 5V power to run the 7i73 logic. If it doesn't work, have a look at igus chainflex CFBUS.045 - cat5, should be good for e-chains and oil from the specs. I think the link should be: http://www.igus.co.uk/iPro/iPro_01_0013_0056_GBen.htm?ArtNr=CFBUS.045&c=GB&l =en I should be ordering some in a month or two for a pendant (I've been saying that for a year or so though) If it does work, let us all know - good test data is always good > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto Ben ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
