PXIe_6570_Clock rate

Hi all,

I have an issue getting a clean clock waveform at 5 MHz on the 6570. I tried to run with lower Speed at 1.1MHz, it looks good which is not the speed I want.

Here are clock waveforms at 1MHz and 5MHz see attached pictures. On the Spec 6570 can run up to 100MHz.

Please advise.

By the way I am using STS T2 test stand 2016, LabVIEW 2016 and Digital pattern 2019.