Reports until 09:23, Tuesday 13 May 2014
H1 ISC
daniel.sigg@LIGO.ORG - posted 09:23, Tuesday 13 May 2014 - last comment - 13:38, Wednesday 14 May 2014(11844)
Preamp for ALS DIFF

Added a ZFL-500HLN amplifier to the ALS DIFF RF path.

Comments related to this report
sheila.dwyer@LIGO.ORG - 17:22, Tuesday 13 May 2014 (11865)
Link

Alexa and I found that this amplifier was not working, so we removed it.

alexan.staley@LIGO.ORG - 13:38, Wednesday 14 May 2014 (11894)
Link

The amplifier on DIFF was not working because we had input/output backwards. I have installed another amplifier on DIFF. I have also put a new amplifier on COMM (HNL) that piggy-backs the power from the BBPD; this amplifier has slightly less gain (about +24dBm in comparison to +30dBm), so we expect about -7dBm for the beatnote.