Why does the 4351 take 1 second to return the measurement?

[JayB]

I am using LV6.1 and the Analog Input VIs to take measurements with the 4351 and the measurements take 1 second to be return. If I ask for 2 measurements (buffer = 2 ) then it takes 2 seonds. Why does this take so long?

[Dennis_Knutson]

What analog in functions are you using exactly and how have you conmfigured the acquisition? If you're using one of the scan functions and set, for example number of scans to 1000 and scan rate to 1000/sec, then each measurement will take 1 second.

[EL1]

Hi.

I would suggest taking a look at the following shipping example: NI 435x Continuous Buffered Acq.vi

It can be found in LabVIEW by clicking Help>>Find Examples>>Searc>>keyword: 435>>NI 435x Continuous Buffered Acq.vi

Most acqusitions, if they are faster than 1KSamp/sec are typically buffered. This means that the card returns chuncks of data less often, making acqusition speed less dependent on the speed of the computer.

-Erik