Difference: AMC13DebugLog (68 vs. 69)

Revision 6927 Jun 2013 - DavidZou

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

2013-06-26, dickens, dzou

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  • Clock Test on input to mLVDS on SN 43:
    • Characteristic exponential curves. Maximum shift ~170 ps. Compared to maximum shift of ~100 ps on SN 33 board.

2013-06-26, dickens, dzou

 
  • Measured the voltage across capacitor 95 (C95), which should have a voltage drop of 3.3 V in parallel with the U2 chip
    • One wire soldered on to each side of the capacitor, each wired to a voltmeter
    • After keeping the AMC13 off for a very long time, voltmeter reads 3.333 V immediately after handle is pressed in, fluctuating between 3.333 V and 3.334 V consistently
    • After a quick handle reset, voltmeter reads constant 3.33 V immediately once again
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2013-06-26 dzou

 
  • Clock Test with SFP cool down:
    • Board on - warmed up to equilibrium
    • Took out SFP, cool down for 5 min
 
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