Evan G. reported some improvement in our noise lines from Feb 11-18 (alog 55352). Alog entries (alog 55041, alog 55160) show EX Baffle Photodiode Amplifier Chassis was powered down during this time.

Today the power configuration for the unit was changed. It was previously powered by ISC ±24V rack power. It is now being powered by a bench power supply. This change isolates the unit from the ISC field rack.

F. Clara, E. Goetz, R. McCarthy