This page describes the in-vacuum comissioning tasks during the OMC installation. 1. Install the OMC, OMMT, DCPD, an TTPZT in OOC, and TTPZT in BS chamber. Run cables, set up control electronics outside of vacuum. 1. Alignment * Mount pre-aligned breadboards with OMC and OMMT in predefined position with backwards propogating fiber pre-aligned. * Lock OMC using light leaking from HR end mirror on OMC. * Use backwards propogating beam to align OMMT and input PZT tip/tilt mirrors to cast a spot to the SRM. If possible, confirm propogation to BS, ITM and PRM. **** Alignment must be done with quiescent voltages and strain gauge readings on tip/tilt piezos **** * Use retro-reflection from SRM to align OMC input beam pick off and beam steering optics to extract beam from vacuum. * Possibly use second fiber launched beam to back propogate beam from in-air output table, through the pick-offs to the SRM. * Set OMC REFL optics using back reflected beam. * Replace fiber launch with DC readout diode and mount amplifier block 1. Install the squeezing optics in OOC: * Mirror on translation stage, and fixed mount mirror 1. Adjust OSEMs on large optic suspensions for proper orientation. * See link below for likely suspects * See iLog link below for method 1. Optical lever beam extraction??