Using Advantech PCI-1711 for input to Labview which appears to be running at 2K samples/sec, where the spec for the board stated upto 100k Samles/sec. How do I increase the sample rate?

[JLB]

I am using Advantech PCI-1711 for input to Labview which appears to be running at 2K samples/sec, where the spec for the board stated upto 100k Samples/sec. I have found a vi that may help, but no examples of its use: FAIIntStart. How do I increase the sample rate to a more usable level?

[Filipe A.]

Hello;

I'm not clear on what National Instruments board you are using there. There is not a PCI-1711 board on the National Instruments portfolio.
Could you please double check the model number?
If you are using one of the NI DAQ boards there, you can refer to the Labview shipping example named Continuous Acquisition and Chart (buffered).vi which can be found at Search Examples->I/O Interfaces->Data Acquisition->Analog Input->Continuous Analog Input.
To change the Sample rate you just need to change the Scan Rate parameter at the VI front panel.
Hope this helps.
Filipe

[CTRInsurgent]

I would assume that your problem is that you're polling each sample individually in software from a fairly high level VI, and LabView probably can't loop much faster than a couple kHz. To get the full 100 kHz in LabView, you'll have to collect batches of samples, like with the N-sample acquisition VIs.
The VI you mention is presumably part of Advantech's proprietary software package that comes with the card, so you should consult their CD-ROM for examples. I've never used Advantech, but I've bought DAQ cards from 3 or 4 different vendors, and they always have examples for this.

[lp19]

Hi

I think maybe someone has already given you a solution but I think you can have a look at the example Madint this should help you. Thats is if you are just concerned about changing the sampling rate.

I was wandering if I could ask you a question, how are you saving your samples I am having difficulty saving my data. Do you have an example VI I could look at. I am stuck.

Cheers

lp19