Orange LED flashing in PXIe 6535 digital card at the time of running

[Theatom]

Hi all,

I am using NI PXIe 1062q chassis along with NI PXIe 6535 digital card.

The digital card is connected with NI CB/SCB-2162 breakout box.

While connecting any digital channel (e.g. Port0/line0, or other) to a oscilloscope and running via LabView, the LED on NI PXIe 6535 digital card is flashing orange.

Is it a normal behavior?

Kindly suggest