Reports until 14:39, Tuesday 09 October 2018
H1 PSL
marc.pirello@LIGO.ORG - posted 14:39, Tuesday 09 October 2018 - last comment - 16:08, Tuesday 09 October 2018(44438)
Swapped AOM VCO Amplifier with modified Spare

Peter King, Marc Pirello

In an effort to reduce RF noise in the PSL racks, we modified the AOM VCO Amplifier (D1201423) by removing the anodization on the front and rear panels to create a better RF "seal" on this chassis.  Though not spectacular, they were measurable.  79MHz RF leakage magnitude near this panel was -37.8dB prior to the installation (S1203924), and post installation (S1203923) we recorded -44dB, roughly 6.2dB difference.

Comments related to this report
peter.king@LIGO.ORG - 16:08, Tuesday 09 October 2018 (44445)
The currently installed unit is S1203924.