adding information about removing wrong AC coupling on Trb3sc and backplane

diff --git a/trb3/Trb3scBasics.tex b/trb3/Trb3scBasics.tex
index fb8ad43bc2e0b764496fc7df387f8192c1b9c527..be4f9fc74dbdb095273d4b22c304a52786c1d054 100644 (file)
--- 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