From ded73d64184df835a6073d977e0787afca174eb9 Mon Sep 17 00:00:00 2001
From: Jan Michel <michel@physik.uni-frankfurt.de>
Date: Sat, 4 Mar 2023 16:57:28 +0100
Subject: [PATCH] add warning about Chain parameter

---
 trb3/DacProgramming.tex | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/trb3/DacProgramming.tex b/trb3/DacProgramming.tex
index 3d4c60a..f8bf562 100644
--- a/trb3/DacProgramming.tex
+++ b/trb3/DacProgramming.tex
@@ -52,7 +52,9 @@ The ASCII format is shown below, the commands can be found in table~\ref{ltc2600
  \item Value: The value to load. 16 Bit value. Note that we are using LTC2620 which are 12 Bit only, the lower 4 Bit are "don't care" in this case and should be 0
  \item The "!Reference" keyword is used to set a reference for all following values. E.g. one can set the reference voltage used on the DAC and give all subsequent values in plain voltages. The format can be (almost) any number: integer, float or hex. The use is optional, if no reference is given, the upper limit is assumed to be 65536.
 \end{itemize*}
-
+\begin{warning}
+The Chain parameter is NOT the number of the chain, but a bitmask! This way, several DAC chains can be programmed in parallel. E.g. to access chain 4 (JKEL1 on Trb3sc) the parameter needs to be 0x10 or 16.
+\end{warning}
 \begin{table}
 \centering
 \begin{tabular}{c|l}
-- 
2.43.0