syntom possible cause action to be taken
unusual pedestal and noise distribution, in particular with peack at low value, due to a single hybrid hybrid analog power malfunctionong verify the LR status in AMI. Try to set the LR on.
unusual pedestal and noise distribution, due to several ladders
absence of Vbias verify the appropriate Vbias value in AMI. If Vbias is off, select the other (cold) DC/DC converter
unusual pedestal and noise distribution, due to several ladders absence of analog power (+/- 2.5 Volts) on several ladders nothing to do
no comunication with half of the TDRs of a crate absence of ditial power (+3.3 V) Select the other DC/DC converter (hot), removing

-- GiovanniAmbrosicernch - 19-Sep-2010

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Topic revision: r1 - 2010-09-19 - GiovanniAmbrosi
 
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