# Multifunction DAQ

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## NI 4472 | Sampling Rate

Hi All,

In the datasheet of NI 4472, it is mentioned that the Sampling Rate can be

"102.4 kS/s down to 1.0 kS/s in 190.7 μS/s increments for fs > 51.2 kS/s or 95.37 μS/s increments for fs ≤ 51.2 kS/s"

In this, I am not able to understand if "190.7 uS/s" is 190.7 uSamples/Second or 190.7 uSecond/Sample. If we consider the first case, we cannot have micro samples but the terminology is confusing.

Sree Ranjani

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## Re: NI 4472 | Sampling Rate

I am pretty sure those are supposed to be microseconds/Sample.  Which gives ~5.2kS/s increments when fs > 51.2kS/s.

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## Re: NI 4472 | Sampling Rate

Thank You crossrulz,

If we use the PXI backplane clock a the reference clock for DAQ device, will we be able to get better resolution? If so what will be the resolution? How to calculate the resolution?

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## Re: NI 4472 | Sampling Rate

@SreeRanjaniSG wrote:

If we use the PXI backplane clock a the reference clock for DAQ device, will we be able to get better resolution?

No.  That will just give you a more accurate base clock, resulting in less jitter.

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