[d2n-analysis-talk] retimed TDCs

[posik at jlab.org]

Hi Brad,

   I followed up on your suggestion to use
DBB.BBxxxTnn[Ndata.DBB.BBxxxTnn-1] instead of DBB.BBcerTnn[0]. I first
just plotted TDC 04 from run 2060 with an (DBB.evtypebits&1<<2)==(1<<2)
cut (t4.png). This is fine, but I then tried to plot the re-timed TDC
by doing

"DBB.BBcerT04[Ndata.DBB.BBcerT04-]-DBB.t2[Ndata.DBB.t2-1]+560"
 with (DBB.evtypebits&1<<2)==(1<<2) cut and I get this (retimed_tdc.png).

This seems like an odd TDC structure.

-matt
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