The orange light is emitted by a LED (DS501) located in PXIe-8881. It is an indicator for a board-to-board communication bus. When the LED light up, it means the communication is good. For completeness, there's another one nearby (DS500) that flashes when there's host communication to the serial port or any register on that device)
Collaborate with other users in our discussion forums
A valid service agreement may be required, and support options vary by country.