RF testing using E4438 generator

• Connect low noise RF generator to inputs:
  • LCLS II
    
    • 40 MHz @ 0dBm
  • Generate test files
    • ssh laci@cpu-b34-bp01
    • cd /afs/slac/g/lcls/users/BPM/LCLS_II/BPM/software/lcls2-py-scripts/

    • ./launch.sh cavityTakeData.py -Y cavity_yaml/*_project.yaml/000TopLevel.yaml -D cavity_yaml/*_project.yaml/config/defaults_cc.yaml -b1 -n1 -d /data/cpu-b34-bp01/bpm_data/

    Log onto a machine that you can get a Matlab license for
    • ssh <username>@rdsrv223
    • Copy test files to the proper directory
      • cd /afs/slac/g/lcls/users/BPM/LCLS_II/Data
      • scp -r laci@cpu-b34-bp01:/data/cpu-b34-bp01/bpm_data/<filename>/<space>.
      Open data in Matlab
      • Source the following
        • bash
        • source /afs/slac/g/lcls/epics/setup/epicsenv-7.0.3.1-1.0.bash
        • source /afs/slac/g/controls/development/package/matlab/setup/matlab_2017b_setup_local.bash
          
          • cd /afs/slac/g/lcls/users/BPM/LCLS_II/matlab
          • matlab &
          • Be sure to close Matlab when done
          Run SNR_b84_GenADC.m
      • Change line 17 to have the right filename
      • Change line 26 to ADC.index=4
        • Bay 0
          • 0 == Unused

          • 1 == Ain 2

          • 2 == Ain 1

          • 3 == Ain 0

        • Bay 1
          • 4 == Unused

          • 5 == Ain 2

          • 6 == Ain 1

          • 7 == Ain 0

        Look for and record the values:
        • sig_power > 1
        • SNR > 68
        • Repeat for indices (5,6,7)