We recently updated our two CXA's (N9000B) with s/w version A 24.56. After some days one of them started to display sharp jumps in the RF signal levels at various places along the spectrum. So we filed a service request with Keysight. Today, the other one exhibited exactly the same problem.
Performing cold starts, (manual /forced) realignments etc did not make the problem go away.
The attached picture was taken when only the first (left) analyzer had failed. Today, the right one has failed as well.
Has anyone else seen this?