VEGAS Team Meeting

Dial in Number: 877-937-8961

Passcode: 9445091#

Agenda:

Whole group:

1. Weird VEGAS bug (see attached plot)

GB only

1. Release of last BOF file
2. Status of Mode 10-19 firmware fix
3. Status of commissioning observations
4. Review of problems from: https://safe.nrao.edu/wiki/bin/view/CICADA/CICADAGreenBankSpectrometerCommissioningLogs
5. Status of Jay Lockman Tsys bug
6. Review of DIBAS upgrade memo
7. New version of l8 (l8ver148)
8. Test Plans

Meeting notes:

Whole group:

1. Weird VEGAS bug (see attached plot)
   • low priority if this is a one-off result, but if this is a regular result this is a big problem.
   • Continue to monitor for reoccurance

GB only

1. Release of last BOF file
   • all have been built and calibrated
   • Test and release
2. Status of Mode 10-19 firmware fix
   • Released new version of l8 (l 8ver148)
   • SRBS tests seem to work, but the quality of spectra on SRBS is not really that good
   • Try a POC test using VEGAS's internal tone generator, an external tone generator, or our Cross-Coupling Test Fixture as our signal source - needs a SDD person to commission
     • The software fixes must be removed before tests can proceed
3. Status of commissioning observations
   • a large number of scans are in the data analysis mode
   • So far no anomalies
   • Ripple tests will need to be redone - Amanda will analyze data
4. Review of problems from: https://safe.nrao.edu/wiki/bin/view/CICADA/CICADAGreenBankSpectrometerCommissioningLogs
5. Status of Jay Lockman Tsys bug
   • one integration out of many have a different Tsys
   • Maybe first/last scan?
   • Will work with Jay's data or re-run to try and identify problem
6. Review of DIBAS upgrade memo
   • Need to quantify "slight change of functionality" comment
   • Please confirm it can be sent
   • Means GB needs to be ready to support SHAO after they receive upgrades
     • SHAO to propose when - GB can delay if other VEGAS work is occupying staff
7. New version of l8 (l 8ver148)
8. Test plans for this week
   • Unscheduled request(s)
     • Test remaining BOF files (Richard & Adam to schedule)
     • Ripple tests (sky, but not movement) (Richard & Adam to schedule)
     • Test firmware fix for Modes 10-19 (Randy & Randy to schedule)
   • Tuesday
   • Wednesday
   • Thursday
   • Monday (8/4)
     • None at this time

Other

1. Please make sure to properly code your timesheets for the current time period and going forward.
   • Software engineers should be using a GBT ops software CM&E account - Account 893252
   • Electronic engineers should be using a GBT ops electronics CM&E account - Account 432510
   • Commissioning activities should be getting charged to hardware support and testing - Account 432510
   • Scientists assisting with shared-risk commissioning should be charging an observer support account
     • 432540 for the most part. Accounts 142020 (GB-based staff) and 142010 (CV-based staff) for when you are helping with overarching observing support (not problem solving, VEGAS specific)