aLIGO LHO Logbook

H1 SEI

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hugo.paris@LIGO.ORG - posted 10:34, Monday 30 July 2012 - last comment - 16:33, Monday 30 July 2012(3648)

HAM3-ISI - In Chamber Testing Progress - WatchDogs Un-tripped

Issue with watchdog tripped - Richard, Filiberto, Hugo
Corrected, can now actuate

We managed un-tripping the coil driver chassis bio watchdog of HAM3 by:

Adjusting connections between the Coil Drivers and the BIO Iterface Chassis (needs confirmation)
Setting the BIO to the right state in ISI_CUST_CHAMBER_BIO.adl

In Vacuum cabling - Corey, Hugo
CPS H3 and CPS V3 were swapped - corrected

I took spectra on our sensors this morning and noticed H3 and V3 were swapped. Corey went looking at it and located it on the in-vaccum side of the feedthrough.

Comments related to this report

hugo.paris@LIGO.ORG - 12:07, Monday 30 July 2012 (3653)

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The binary word that should be used for HAM3, in ISI_CUST_CHAMBER_BIO.adl is:

65535

filiberto.clara@LIGO.ORG - 16:33, Monday 30 July 2012 (3657)

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Replaced ISI Coil Driver SN S1103567 with SN S1103321 in Rack H1-SEI-C2 for HAM3 . Driver seems to have internal wiring issues with the outputs. When you drive CH1 (coarse1), it would drive CH4 (coarse 2). Same with CH2 (fine1) and CH3 (fine2). Unit also has a ±18V type connector for the input power of ±24V.

Filiberto Clara