NI 9237 continuous sampling loop reading rate

[Eric_LZ]

NI 9237 continious sampling

sampling rate:2k

Have a while loop to read the samples. 

N channel N sample 1D waveform

1, If I set a number of samples to read, no mater what the number is (i.e. 10, 20, 50, 100), the loop reading rate is like only 5Hz (read 5 times oer second)

2, if I don't set a number of samples to read (i.e. read all available samples), the loop reading rate is as fast as it can be, but the Y attribution of the waveform cannot be get ( i.e. empty array), the waveform can be shown on the chart control though.

[Jason-M]

Hi Eric_LZ,

Feel free to include the code you are using. Are you setting the sample mode on your Timing VI to continuous? There are a few possibilities of what could be occurring, but it might be easier to pinpoint if you included your VI.

Cheers,