From 8a146fff5929b064dd91dc249aa1aebaf6b75f6b Mon Sep 17 00:00:00 2001 From: Jan Michel Date: Thu, 29 Oct 2015 16:53:20 +0100 Subject: [PATCH] adding information about removing wrong AC coupling on Trb3sc and backplane --- trb3/Trb3scBasics.tex | 8 ++++++++ 1 file changed, 8 insertions(+) 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 -- 2.43.0