Pxie-5162 10bit fetch data with I16

[781095278]

When I used a 10-bit acquisition card to collect,in the NI-scope, how does the fench function convert data to I16 data, and if I need to get an accurate amplitude, what compensation calculations do I need to make?

[carmen9]

Hi,

The 10-bit is the resolution of the PXIe-5162, and this corresponds to the precision (smallest voltage change it can detect). 

This link explains the specifications of oscilloscopes: https://www.ni.com/en/support/documentation/supplemental/17/specifications-explained--ni-oscilloscop...

In terms of accuracy, you may refer to this calibration procedure for the PXIe-5162: https://www.ni.com/docs/en-US/bundle/pxie-5162-cal-pro/resource/373910f.pdf

[781095278]

Hello,

thank you for your answer. What I want to know is how the collected data is converted from 10 bits to 16 bits, so the data output by the fetch function becomes a 16-bit binary number.

[carmen9]

Hi, 

I don't really understand what do you mean by collected data is converted from 10 bits to 16 bits. Is the result displayed in 16-bit binary number? Do you have a screenshot of your program and results?

[781095278]

hello,

  The Tetch function can retrieve data and return a one-dimensional array of binary 16-bit values,but my Pxie-5162 is 10-bit values,so how does this function implement this conversion?

thank you.

[carmen9]

Good day!

The 10-bit in PXIe-5162 represents the resolution and not the way data is read or stored. I hope the screenshot below is able to clarify your question.

[781095278]

Ok, thank you for your answer.