I reworked the IO_AB_* path on the PSL. This incuded a small change to the layout to accomodate a 2" mirror mount. The beam is routed to IO AB_PD2, and the PD is powered.  IO_AB_PD3 is not yet on the table.  IO_AB_PD1 is on the table but not hooked up.

Moved one inch away from the periscope foot:

IO_AB_M8

IO_AB_BS2

IO_AB_M9 - also moved one inch toward the center of the table to keep the path length from the lens 15"

IO_AB_PD - also moved one inch toward the center of the table

IO_AB_M10

IO_AB_CCD1 - not yet on the table

Need for DC PDs:

- power cable for IO_AB_PD3

- BNC cable for IO_AB_PD3

- connection to DAC for PD2 and PD3

Need for camera:

- camera - didn't find a WATEC

- power cable 

- BNC

Other to do:

- swap optic from manual rotation stage to powered rotation stage for IO_MB_HWP2

- install and test the rotation stage in the main beam