Page History

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5:10pm
Omar found that one of the LV mezzanine card (L5t, bottom screw) was now connecting AGND to the FEB support plate. The screw is touching the ground plane. By pushing it slightly he was able to get it back in w/o touchingAfter debugging turns out that it was the edge of the high-speed mSAS cables that was conducting and touching components on the FEBs.  

5:30pm
L4t and L4b power was swapped on the back of the breakout box (on the flange side). For reference this is patch panel P3 and thus S1 and S2 where swapped. Mapping power to FEBs is ok now.

12:45pm
Wrapped all mSAS cables with kapton tape. Only wrap the parts that cover the FEB plate plus a little extra. The other side needs to be protected by a sleeve, e.g. Halar.