Re : Ni-6120 - Real sample rate resolution

[romainv28]

Hello.

I'm using the NI-6120 card and labview 8.2.

And I didn't find any informations about the sample rate resolution.

So I wonder if someone know what is this resolution ?

And can I get the real value of the sample rate of the card after I have programmed the sample rate I want.

Thank you!

Sincerely,

Romain

[Ludovic R. · Accepted solution]

Hi Romain,

Refering to the datasheet the sampling rate for a PCI/PXI 6120 is 800 kS/s with NI-DAQmx divers.

If you want to get the Actual Sample Rate with LabView and DAQmx drivers use a Timing Property node and select Sample Clock>>Rate.

Regards,

Ludovic R.

links:

NI-6120 DataSheet

[romainv28]

Ok, it's what I was looking for!

Thank you !

[John_P1]

Furthermore, the internal sample clocks are derived by dividing-down a 20 MHz oscillator.  So you can only achieve integer divide-downs of 20 MHz.  Sample rates on analog input tasks are always coerced up if you specify a rate that cannot be achieved by an integer divide-down 20 MHz.  You can read this coerced rate through the property node like Ludovic mentioned.

Best Regards,