VEGAS tests 20 December 2013

Goals

  • test modes 20-29 during maintenance time (no telescope movement).

Plan

  • run position and frequency switched scripts for each mode

Log

  • Lbandmode20fsw -- failed because of balancing problem
  • Manager has illegal value and bank B appears to be dead.
  • Ray has diagnosed and fixed problem
  • Lbandmode20fsw -- just bank A -- scan 2 -- works.
  • Lbandmode20fsw -- Banks A & B -- scan 3 -- failed -- No data from either banks A or B.
  • Lbandmode20fsw-- just Bank A -- scan 4 -- works.
  • Lbandmode20fsw -- Banks A & B -- scan 5 -- failed -- no data found for either banks A or B.
  • Lbandmode20fsw_bankAandB -- scan 6 -- failed -- BankBMgr
  • Lbandmode20fsw_bandAandB -- scan 7 -- worked.
  • Lbandmode20fsw_bandAandB -- scan 8 -- worked.
  • Lbandmdoe20OnOff -- scan 9&10 -- (includes both banks A and B)
  • Lbandmode21fsw -- scan 11 -- failed -- no received from either banks A or B
  • Lbandmode21fsw -- scan 12 -- okay
  • Lbandmode21fsw -- scan 13 -- okay
  • Lbandmode21OnOff -- scan 14&15 -- okay
  • Lbandmode22fsw -- scan 16 -- no data received from banks A and B
  • Lbandmode22fsw -- scan 17 -- seemed to complete
  • Lbandmode22fsw_noconfig -- scan 18 -- took out configuration and reran
  • Lbandmode22fsw -- scan 19 -- checking Ray and Joe's fix
  • Lbandmode22fsw -- scan 20 -- checking Ray and Joe's fix
  • Lbandmode22fsw -- scan 21 -- checking Ray and Joe's fix.
  • Lbandmode22fsw -- scan 22 -- checking fix again
  • Lbandmode23fsw -- scan 23 -- changing modes to see if modes change appropriately
  • Lbandmode20fsw -- scan 24 -- changing modes to see if modes change appropriately
  • Lbandmode20fsw -- scan 25
  • Lbandmode21fsw -- scan 26 -- changing modes to see if modes change appropriately
  • Lbandmode22fsw -- scan 27 -- changing modes to see if modes change appropriately
  • Lbandmode23fsw -- scan 28 -- changing modes to see if modes change appropriately
  • Lbandmode24fsw -- scan 29 -- changing modes to see if modes change appropriately
  • Lbandmode25fsw -- scan 30
  • Lbandmode24OnOff -- scan 31&32 -- can it handle the switch between OnOff and fsw and mode 24 and 25 (different bandwidths)? -- yes.
  • Lbandmode26fsw -- scan 33
  • Lbandmode27fsw -- scan 34
  • Lbandmode28fsw -- scan 35
  • Lbandmode29fsw -- scan 36
  • Lbandmode22OnOff -- scan 37&38
  • Lbandmode23OnOff -- scan 39&40
  • restarting LO1 and IF manager to get them back in system
  • Lbandmode20fsw_bankAandB -- scan 41
  • Lbandmode24OnOff -- scan 42&43
  • Lbandmode25OnOff -- scan 44&45
  • Lbandmode26OnOff -- scan 46&47
  • Lbandmode27OnOff -- scan 48&49
  • Lbandmode28OnOff -- scan 50&51
  • Lbandmode29OnOff -- scan 52&53
  • Had LO1 problems through the tests. so any frequency issues might be the problem for any frequency setting.
  • tried to run Mode 2 using Dec8RRLXbandMode2SpecOnOff, which worked on Dec. 8. Astrid is producing an error:
    • "Error:1250 is an illegal bandwidth. Legal VEGAS bandwidths are: 11.72,23.44,100,187.5 and 1250"
    • restarted turtle
    • ran mode 2, then mode 20, then mode 2. Mode 2 configuration failed the second time.

Data Location

  • /home/scratch/akepley/vegas_tests/mode20_29_test_20dec2013

Analysis

  • For scan 2, I requested 5 spectral windows but gbtidl is showing 8. The extra spectral windows all have the same frequency as the first.
  • Looks like extra ifs beyond those requested are at end and have frequency the same as the first window
  • However, frequency setup doesn't always follow this pattern.
    • e.g., scan 36 should be

1420,1612, 1665, 1667, 1720, 1420, 1612, 1665, 1667, 1720, 1420, 1420, 1420, 1420, 1420, 1420

but actually goes

1420, 1612, 1667, 1667, 1720, 1420, 1420, 1612, 1667, 1667, 1720, 1420, 1420, 1420, 1420, 1420

-- AmandaKepley - 2013-12-20
Topic revision: r2 - 2013-12-20, AmandaKepley
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