Some strange noise when I use NI 5761

[fn250250]

Hi all,

I try to acquire analog data using NI 5761 and PXI-7952R and I use NI 5761- Getting Started example to acquire the signal

from function generator. But when giving a sinewave (15MHz,-300mV~300mV) from an function generator, sometime the reslut have some strange noise.The signal had been checked by Oscilloscope and I I think there is something wrong when analog  to digital. I have attached the screenshot of the error.

Any help would be deeply appreciated. Thanks.

[David-A · Accepted solution]

That looks like glitching. Make sure you the analog input node is being accessed inside a single cycle timed loop that is using the clock exported by the CLIP. The getting started example for that IO Module should demonstrate how to do this.

[fn250250]

Hi,

You're right. I change time loop clock from 100MHz to data clock. Now the problem is solved.

Thank you very much.