2012/11/14 Peter C. Wallace <[email protected]>: > > You can do the whole encoder interface with a 26LS32A chip (4 channel RS-422 > receiver)
Thank You, I did not know that such a chip exists with several channels in one. I just checked - even our local electronics supply store have them in stock (at least that is what their homepage says). > Here's a sample schematic > > freeby.mesanet.com/422enc.pdf What are those 2 capacitors and diodes for? > On the other hand TTL may be OK if your count rates > are not too high. > > (so you can set the encoder digital filter to reject HF > noise) Could You, please, explain, what does TTL signal has to do with high or low count rate? Motors have 1000 CPR encoders and are rated for 3000 RPM, so the count rate should be up to 50 kHz. And how do You mean to set the encoder digital filter? I am missing the moment of where am I supposed to have one. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
