I used a 1k ohm. but.. We ran that right into a CUI line driver.. (I don't think you can get them anymore) then into a mesa differential encoder counter... http://www.digikey.com/product-search/en?keywords=102-1787-ND
here is our mounting. You can see the index hole (the index sensor isn't mounted in this photo) http://electronicsam.com/images/matsuura/sensors.jpg sam On 9/12/2016 12:43 PM, Gene Heskett wrote: > 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. > > Cheers, Gene Heskett ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
