> From: Gene Heskett [mailto:ghesk...@shentel.net]
> If the opto's are fast enough, you should be > fixed. A 500 ppr encoder s/b fine. A 1024 or 1000 requires a faster > opto. > HI Gene, Comparing the cheap far east BoB optos with the HCPL2621 is apples and oranges. A 2500 line encoder still only creates 2500 pulses. The quadrature just looks at two lines and 2 edges for 10,000 edges. But the max speed of his encoder is 10,000 RPM which in RPS is 166.7 and would result in 417kHz which is 4% of the opto max 10 Mbps capabilities if the encoder was 2500 line. But his is 500 line so at 166.7 RPS is 83kHz which is 0.8% of opto capabilities. John _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
