I just got a brand new PXIe-1090 chassis connected via thunderbolt to my Win11 PC. I can boot up the chassis with no cards installed and view it in MAX with some info about it. Next, I powered off and installed an older PXI-5122 digital oscilloscope card into the hybrid slot. I can boot up the chassis without the thunderbolt cable and the two LEDs on the front (System and MXI) are both solid green. But, when I plug in the thunderbolt cable, the System LED goes solid red, and the MXI LED turns off. In MAX, I see the following: Please let me know if you have ideas to troubleshoot this issue.

Hi Gregory, It sounds like you've found the problem -- power draw on -12V. Until you connect the chassis to the PC the chassis/card will be in reset. Cards generally draw minimal power in reset. Sometimes analog supplies aren't even enabled until later when the driver loads, which is what I suspect is happening here since it was functional long enough to be recognized and show up in MAX. The -12V rail is only available to legacy PXI cards so you won't see this problem with PXIe cards. Hopefully you were just testing with a card on hand and not planning to use the 5122 in that chassis. - Robert

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PXIe-1090 has trouble when PXI card is installed

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I just tested the PXIe-1083 on a Windows 10 desktop PC, and it seems to work without issue. The computer that was giving me a problem was my Windows 11 laptop PC. The laptop came from the manufacturer with 2x thunderbolt ports, while the desktop got the thunderbolt ports added through a PCIe card. I'm not sure all the differences between the PC's, but it seems like it was some kind of communication error with my laptop.

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