From: Andreas Neiser Date: Fri, 10 May 2013 12:00:12 +0000 (+0200) Subject: Clarified Padiwa grounding remark, again! X-Git-Url: https://jspc29.x-matter.uni-frankfurt.de/git/?a=commitdiff_plain;h=4fe583c295dd5c9ebb39bfe4873760596322dc82;p=daqdocu.git Clarified Padiwa grounding remark, again! --- diff --git a/trb3/WasaFrontend.tex b/trb3/WasaFrontend.tex index 67f5461..d92ba2d 100644 --- a/trb3/WasaFrontend.tex +++ b/trb3/WasaFrontend.tex @@ -85,11 +85,14 @@ Just some quick notes from a first user perspectives. which are green highlighted in the Webinterface seem to be read out). This is not valid for the two edge versions of the padiwa TDC firmwares. -\item Ensure that the TRB boards and your PaDiWa FEE share the same - ground, otherwise the \verb!padiwa.pl! might return a random uid or - temperature, so your frontend is not accessible. This is by default - not the case if you use galvanically separated outputs of your power - supply unit. +\item Ensure that the TRB3 and your PaDiWa FEE share the same ground, + otherwise the \verb!padiwa.pl! might return a random uid or + temperature, so your frontend is not accessible. Note that the power + supply ``ground'' of the TRB is NOT the same as the ground of the + board itself (The TRB3 components are powered over galvanically + separated supplies on the board itself, again). Thus, you should + connect your probably galvanically separated ground of the PaDiWa + power supply with one of the four pins JGND headers of the TRB3. \end{itemize*}