VEGAS Team Meeting

Agenda:

1. Baseline tests, results and actions
2. 'Spike' tests, results and actions
3. Next meeting?

Meeting notes:

1. Baseline tests, results and actions
   • After digital filtering the gain difference was such that re-quantized values were in error
   • Adding a gain adjustment cleared problem
   • Consider adding it as a dynamic balance adjustment in the manager based on an algorithm that Anish has created (Modes 10-19)
     • Anish to draft MR
   • With the new levels the baseline issues are much better
   • Agreed
2. 'Spike' tests, results and actions
   • Details and test data can be seen here.
   • Next steps
     • Try the shift setting tests recommended (ffff v. aaaa)
       • shifts every stage, which creates quantization effects due to the small numbers
       • may end up with different shift settings for bands depending on amount of FRI
   • Recheck OGP(?) calibrations on the next maintenance day
   • First fix build environment (NRAO & UCB)
   • Then look for Mode 2&3 spikes/fix spikes
   • Then look at spikes in Mode 4 (believe problem is different)
3. Next meeting
   • Tuesday afternoon for updates