Why not use twisted pair ethernet cable?
From: Gene Heskett <ghesk...@shentel.net> To: emc-users@lists.sourceforge.net Sent: Monday, September 12, 2016 11:43 AM Subject: [Emc-users] output sink of the 667 hall effect? Greetings all; I see by the spec sheet that the allegro 667 gear sensor can sink up to 25 mills. But with 3 such sensors on the end of a long cable back to the breakout board, probably 7 foot by the time I get it routed, I am concerned with the potential for crosstalk noise in spite of putting a bypass capacitor on the encoder itself. This noise would be reduced by a lesser amount of current. So, for those of you using this device, what value is the resistor are you using for a pullup at the breakout board? And if using a piece of idc ribbon cable, it seems to make sense to put a grounded wire between each of the A|Z|B conductors, making that a 7 conductor cable rather than a 5. I have around 90 feet of 26 wire ribbon I can split off what I need from. Good idea? Or off the wall & probably will be plagued by noise if I shoot for a 10 milliamp pullup with a 470 ohm pullup, or even 5 mills with a 1k pullup. Time to assemble that motor driver box I believe. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
