Dick Gustafson, Marc Pirello​​

Today, we investigated the output of 8 Port RF Amplifiers.  We looked at 45MHz, 24MHz, 71MHz at the PSL racks, and 9MHz in the CER.  All ports have good signal with very little noise.  We also looked at the 10MHz signal in the CER which is derived from the 80MHz VCO in the CER.  This signal has a few harmonics which can be low pass filtered out.  Attached are the plots for each test, including the before and after for the 10MHz test.  The 71MHz signal also has a bump near the 80MHz which looks to be coupled from somewhere.  This signal may also benefit from a filter.

*edit: fixed some mislabeled plots