Reports until 14:33, Monday 10 November 2014
H1 SUS
edmond.merilh@LIGO.ORG - posted 14:33, Monday 10 November 2014 - last comment - 11:29, Tuesday 11 November 2014(14943)
sus aux channel faults investigation

Upon taking a look at all large suspensions and small suspensions aux channels only ETMY stage L1 was found to have a noise aux channel which is showing some possible issue. ie ~ -4300 cts. This is showing on "noise" (4), volt (UL) and fast_I (LR). I have begun setting up DTT templates for all aux sus channels to further examine questionable readings.

Comments related to this report
jeffrey.kissel@LIGO.ORG - 11:29, Tuesday 11 November 2014 (14974)
Link 

E. Merilh, J. Kissel

This investigation concludes that the issue identified in LHO aLOG 14922 is not as pervasive as originally thought. *phew*!

The DTT templates to which Ed refers will assess the noise performance of these channels.

We'll work on resurrecting Koji's automatic SUS AUX channel characterization suite, found here:
/ligo/svncommon/SusSVN/sus/trunk/QUAD/Common/MatlabTools/ezQuadDewhitening
This will assess whether each of the monitor boards show the expect driver's driven transfer function after install.