Quote:
Originally Posted by Jared341
That's a good point - many types of encoders (particularly those with bearings, and especially sleeve bearings) can fail mechanically long before they hit the Nyquist rate.
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I don't have the specs for the digital input module on me, but I seem to remember that a 256 count encoder attached directly to a CIM was about at the limit. 971 had a 64 count/rev encoder attached to the cim output shaft, and that worked fine. I think the cRIO module has a rated refresh rate of something around 7 us, which would translate to 14,290 samples/second. I ran the math ~6 months ago...