Minimum sample rate for 10KHz square wave with MIO

[Steverhnm]

Need to display a 10KHz square wave input to a 16E MIO. Presently sampling 1 channel at 400KS/s. Gives me 2.5uS/sample. Even at 800KS/s-same thing. How come I can't get a decent picture of the waveform. Presently I see a ramp up-down akin to an RC time constant. At 1KHz I get a decent waveform. I'm wondering if I have something set wrong in my program. Did I miss something in determining the proper sample rate?

[RossC]

Steverh,

What is the full name of the board you have? It should be [interface type]-MIO-16E-[number]. This is important, since the number at the end corresponds to your maximum sampling rate. As for displaying a 10 kHz square wave, 100 kS/s should display it pretty well. If that doesn't look as good as you would like, try 250 kS/s. I hope this helps you out.

RossC