Difference: AMC13DebugLog (53 vs. 54)

Revision 5414 Jun 2013 - DavidZou

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META TOPICPARENT name="CmsSlhc"
Please log AMC13 test activity below, blog style (new entries at top)
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2013-06-14 dzou

  • Continuing Clock Phase Shift testing
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2013-06-14 dzou, dickens

  • Update TTT firmware and tested range of TTT SN 2: Found similar results as 2013-06-13 entry. AMC13 clock stops working at somewhere between 80 and 90 MHz. Lock lost at around 120 MHz.

  • Continuing Clock Phase Shift testing:
 
  • Placed probe in clock path prior to the m-LVDS (will add specifics soon) on SN 33
  • Observed a unexpected phase behavior when changing amplitude of AWG:
    • Shifting from 900mV peak to peak to 600mV cause the signals (AWG and probe) to go out of phase and stay there even after returning to 900mV. (delay of roughly 9.58 ns)
    • Shifting back down to 600 mV puts it back in phase again. (delay of roughly 3.38 ns)
    • (will include screen shots if necessary)
  • Continued testing with settings described in 2013-06-11 entry
Added:
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Plot of clock phase at various power off times

 

2013-06-13 dickens

  • AMC13XG and TTT frequency range tests:
 
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