From: Jan Michel <j.michel@gsi.de>
Date: Thu, 29 Oct 2015 15:53:20 +0000 (+0100)
Subject: adding information about removing wrong AC coupling on Trb3sc and backplane
X-Git-Url: https://jspc29.x-matter.uni-frankfurt.de/git/?a=commitdiff_plain;h=8a146fff5929b064dd91dc249aa1aebaf6b75f6b;p=daqdocu.git

adding information about removing wrong AC coupling on Trb3sc and backplane
---

diff --git a/trb3/Trb3scBasics.tex b/trb3/Trb3scBasics.tex
index fb8ad43..be4f9fc 100644
--- a/trb3/Trb3scBasics.tex
+++ b/trb3/Trb3scBasics.tex
@@ -121,4 +121,12 @@ The following changes compared to the original schematics are to be made:
   \item [R13, R15] 680 Ohm, LED is too dim
   \item [R16, R17] 680 Ohm, LED is too bright
   \item [Patchwire] Disconnect R14 from 2.5V (rotate by 90°), patchwire to Pin 2 of switch - green LED shows status of clock select. See picture.
+  \item [C21, C22, C24, C25] Replace by 0R (AC coupling for trigger signals)
+  \item [R8, R9, R10, R11] Replace by proper 100 Ohm termination (AC coupling for trigger signals)
+\end{description*}
+
+On the backplane, the AC coupling of the trigger signals needs to be removed as well:
+\begin{description*}
+  \item [C21, C22, C24, C25] Replace by 0R (AC coupling for trigger signals)
+  \item [R8, R9, R10, R11] Replace by proper 100 Ohm termination (AC coupling for trigger signals)
 \end{description*}
\ No newline at end of file