Sometime AD9164-FMCC-EBZ and ADS7-V2 stop working

For the AD9164-FMCC-EBZ I am using now, I found one possible problem:

I opened ACE and DPGdownloader, connected AD9164-EBZ and ADS7-V2 together, and connected them to PC through USB cables. When I powered on ADS7-V2, AD9164-EBZ was also successfully powered by ADS7-V2. The PC can detect both AD9164-EBZ and ADS7-V2 in ACE, and I can successfully get the output from AD9164-EBZ by using DPGdownloader. However, usually after some time (say about 10~15 minutes), DPGdownloader will show an error:

And the ACE will also show an error: State=Unavaliable

 

There will be no output from AD9164-EBZ anymore. But the JESD PLL is still locked and other states are all okay.

In this case, I have to close ACE and DPGdownloader, and re-open them to make them available again.

 

Thank you.