Up to which loop rate can PXIe 8820 Real-time controller reach ?

[cecilecici]

Hello,

I was using PXIe8820 to do closed-loop control in labview real time. I take the measurement and give a control signal to actuators at each cycle.

But I can't increase the loop rate up to 3kHz. Is this a limitation of the PXIe8820 controller? Or I need to change the configurations at somewhere?

Can anyone help me with this? Thank you!

[cecilecici]

I used the PXIe 6363 as data acquisition card ana a hardwire-timed single point acquisition method. 

I run the closed-loop for 10s evaluation. It's fine with 3kHz but when I use 4kHz, the real evalution time became 20s. It was really out timed.

Can anybody help me with this issue??