2013 July 03 - Testing for Ghost Frequency fix with new BOF

Goals

  • Test modes 10-14 with new BOF which should have ghost frequency fix.
  • If time, test modes 20-14 also, since these has the same BOF

Ghost Frequency Tests #1

  • TGBT14A_912 session 2
  • Turn VEGAS off and on. Complains about no MMCM calibration values.
  • Clear by various OFF / ONs, and cannot replicate.
  • Scan 1 fsw_issue noswitch_mode10
  • See a line at 1421.405 and also one at 1409.686
  • In channels: 12275 and 28659. Difference is 16384 c.f. 16384...
  • Scan 2 fsw_issue_noswitch_nocal_mode20 - no sign of the image
  • BOF file is l8_ver145_1500_smanew_2014_Jul_02_1742.bof
  • Want to try Randy's build, but need to wait for Joe. Try checking LO blanking values in each mode

Blanking checks

Errors in blanking MR

  • WE SHOULD NOT CHANGE THE MR AT THIS POINT.
  • for frequency switching, since the frequency switch is only done once (not twice), the phase time used should be swperiod / 2.0, not /4.0.
  • for tp (with cal), MR says to ignore Doppler. Should it check Doppler?
  • for tp (with cal) should do duty cycle checks based on the blanking value in Joe's table

Mode 1

  • tp_nocal, topo - looks correct
  • tp_nocal, lsrk - looks correct. Doppler tracking should happen on cycles of seconds, but I do not ask for this to be checked.
  • tp (with cal), topo. Setting 38ms, and using 38ms in check. Should be setting and using value from Joe's table.
  • tp (with cal), lsrk. Setting 16ms, and using 16ms. Should be setting and using value from Joe's table.
  • fsw (with cal), topo. Setting 38ms, and using 38ms. Should be setting value from Joe's table, using 16ms.
  • fsw (with cal), lsrk. Setting 16ms, and using 16ms. Should be setting value from Joe's table, and using 38ms.
  • fsw switching periods less than 250ms are NOT checked by the config tool.

Mode 2

  • looks like Mode 1

Mode 10

  • tp_nocal, topo, looks correct.
  • tp_nocal, lsrk, looks correct.
  • tp, topo. Setting and using 38ms in check. Assume the rest will be like Mode 1 (I haven't checked).

Ghost frequency checks #2

  • Get Joe to switch to Randy's build of the new fix.
  • Scan 3 - fsw_issue noswitch_mode10 - seems ghost is still there.
  • BOF file l8_ver145_2014_Jul_01_1633.bof
Topic revision: r3 - 2015-01-27, RichardPrestage
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