J. Kissel

Finishing the job started in LHO:91705, in which we added filter banks to calibrate the H1SPIH23 optical lever's QPDs from units of normalized spot position ([V/V]) into angular displacement of the respective ISI ([rad], or the preferred order of magnitude [nrad]) -- I 
   - created a new 4x filter bank cluster screen for the 
       H1:SPI-H23_OL_QPD_A_PIT_CAL (measuring HAM3 rotation)
       H1:SPI-H23_OL_QPD_B_PIT_CAL (measuring HAM2 rotation)
       H1:SPI-H23_OL_QPD_A_YAW_CAL
       H1:SPI-H23_OL_QPD_B_YAW_CAL
     channels; 
         /opt/rtcds/userapps/release/spi/common/medm/
             SPI_CUST_OL_CAL.adl    rev 35979
   - added a block with link to these banks to the SPI OVERVIEW screen,
         /opt/rtcds/userapps/release/spi/common/medm/
             SPI_CUST_OVERVIEW.adl    rev 35979
     and along the way also modded the overview with a few other things that have popped up as requests for user interface:
        . top-level views of the QPD XY scatter plots so we have an "at-a-glance" view of whether they're centered, 
        . Another column to the PICOMOTOR section that helps the reader understand which actuator aligns which beam
   - Filled in the CAL filterbanks with the calibration from LHO:91754.
        /opt/rtcds/userapps/release/spi/h1/filterfiles/
            H1SPIH23.txt    rev 35985.
   - Made sure to *initialize* the above bank's channels in the SDF system, and accepted the values.
        /opt/rtcds/userapps/release/spi/h1/burtfiles/
            h1spih23_safe.snap   rev 35986.

Thus, 
       H1:SPI-H23_OL_QPD_A_PIT_CAL_OUT_DQ (measuring HAM3 rotation)
       H1:SPI-H23_OL_QPD_B_PIT_CAL_OUT_DQ  (measuring HAM2 rotation)
       H1:SPI-H23_OL_QPD_A_YAW_CAL_OUT_DQ 
       H1:SPI-H23_OL_QPD_B_YAW_CAL_OUT_DQ 
are now calibrated into [nrad] of ISI rotation, based on the *measured* values of the calibration from LHO:91754.