NI-DMM 4071 instrument driver functions

[Toni2]

I have general questions about function palete in NI-DMM Instrument driver:

1. Difference between Acquisition function (niDMMRead, niDMM ReadMulti point, niDMMReadWaveform) and Low-Level Acquisition function (niDMMFetch, niDMM Fetch Multi point, niDMM Fetch Waveform)

2. When better to used normal Acquisition functions and Low-Level Acquisition function

Thanks!

[Shea C]

Toni,

The high level calls such as (niDMMRead, niDMM ReadMulti point, niDMMReadWaveform) incorporate the niDMM Initiate function call as well as Fetch calls. Using the low-level calls gives you more flexibility that allows one to retrieve the data from the board and initiate the board at independent times. So when using the Fetch calls you would have to make another call to initiate the acquisition. Please see the NI-DMM instrument Driver Quick Reference Guide for more information. this can be found under Start>>Programs>>National Instruments>>NI-DMM>>Documentation. I hope this helps!

Regards,

Shea C
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