Reports until 17:55, Thursday 01 February 2018
H1 AOS (SQZ)
terry.mcrae@LIGO.ORG - posted 17:55, Thursday 01 February 2018 (40374)
Step Motor Waveplate rotators installed on ISCT6

Nutsinee, Sheila, Daniel

The 4 D9 cables (H1:ISC_SQ_394, H1:ISC_SQ_395, H1:ISC_SQ_396, H1:ISC_SQ_397) from the patch panel to the picomotor four axis breakout boxes had to be replaced for low profile versions as the ends of the custom D9 cables were too fat to fit to the patch panel (see attachment).

Note some of the connections from the breakout boxes to the picomotors are currently inconsistent with with the schematic D1700384. The working arrangement is listed below.

H1:ISC_SQ_394   PSL fibre pol 1/2 1X, PSL fibre pol 1/4 1Y, PSL power 1/2 2X  (ok)

H1:ISC_SQ_395   CLF 1/2 2X,  CLF 1/4  2Y, Green fibre pol 1/2 1X, Green fibre pol 1/4 1Y (different to schematic)

H1:ISC_SQ_396   CLF power 1Y, Green Power 1/2 1X (different to schematic)

Also the software for the Step rotator on SQZT6 is currently inoperative.

Images attached to this report