at-mio-16E-10: Buffered period measurement

[NickGiff]

Hello,

I'm using an old AT-MIO-16E-10 DAQ card and I need to record the time between periods for an axial fan. The fan rotational frequency is 35Hz, but I need to know the time for _every_ rotation for use in processing LDA (laser doppler anemometry) data.

I understand that in LabVIEW (v6.?) there are buffered counter functions for the am9513 chip, however when I try to use them, the counter doesn't ever start operation. Are these functions compatible with this card?


I can attach my code seperately if that would help.



Thanks very much,

Nick Gifford.

[Sean_C.]

Those functions are not compatible with your E Series Device, because the E Series cards used a different timing chip, the DAQ-STC. Try looking at the shipping examples to see how to perform buffered event counting in DAQmx. In LabVIEW, select Help >> Find Examples. Then, in the Example Finder, browse to Hardware Input and Output >> DAQmx >> Counter Measurements >> Count Digital Events >> Count Digital Events-Buffered-Continuous-Ext Clk.vi. This example demonstrates how to count digital events on the counter input channel.

Let me know if you have any further questions.

Regards,
Sean C.

[gus]

The AT-MIO-16E-10 is only supported in traditional DAQ (not supported in DAQmx). To find traditional DAQ examples in example finder go to:

NI Example Finder >> Hardware Input and Output >> Traditional DAQ >> Counters >> DAQ-STC >> Count Buffered Edges (DAQ-STC).vi

This particular example demonstrates buffered event counting in traditional DAQ.

gus....