From af0fca61e2526a5a961f9ee6626622b4e8be59a4 Mon Sep 17 00:00:00 2001
From: occheung <dc@m-labs.hk>
Date: Fri, 24 Jun 2022 11:29:40 +0800
Subject: [PATCH] 4410: replot voltage measured vs expected

---
 4410-4412.tex | 88 +++++++++++++++++++++++++--------------------------
 1 file changed, 43 insertions(+), 45 deletions(-)

diff --git a/4410-4412.tex b/4410-4412.tex
index 596e60a..2b5171a 100644
--- a/4410-4412.tex
+++ b/4410-4412.tex
@@ -643,6 +643,8 @@ The reported values are obtained from the oscilloscope.
 \caption{RMS voltage, 0dB attenuation}
 \end{figure}
 
+\columnbreak
+
 \begin{figure}[H]
 \begin{tikzpicture}
     \begin{axis}[
@@ -700,83 +702,79 @@ The reported values are obtained from the oscilloscope.
 \caption{RMS voltage, 15dB attenuation}
 \end{figure}
 
-\columnbreak
+\end{multicols}
+
+The expected RMS voltage is described by the linear function $V_\mathrm{rms,exp}(\mathrm{ASF})=\frac{V_\mathrm{rms}(0.1)}{0.1}*\mathrm{ASF}$.
+The measured RMS voltage divided by the full scale expected RMS voltage (i.e. $V_\mathrm{rms,exp}(1)$) is shown below.
 
 \begin{figure}[H]
+    \centering
     \begin{tikzpicture}
         \begin{axis}[
-            % title={RMS Voltage with 50\textOmega~termination \& 0dB attenuation},
             xlabel={AD9910 Amplitude Scale Factor},
-            ylabel={DDS RMS Voltage ($V_{rms}$)},
+            ylabel={Scaled RMS Voltage},
             xmin=0, xmax=1,
-            ymin=0, ymax=1,
+            ymin=0, ymax=1.1,
             xtick={0, 0.2, 0.4, 0.6, 0.8, 1},
             ytick={0, 0.2, 0.4, 0.6, 0.8, 1},
             legend pos=north west,
             ymajorgrids=true,
             grid style=dashed,
+            width=0.7\textwidth
         ]
+
+        \addplot[
+            color=black,
+            samples=2,
+            ultra thick,
+            dotted
+        ] {x};
         
         \addplot[
             color=blue,
             mark=square,
-            samples=11
+            samples=11,
+            y filter/.code={\pgfmathparse{\pgfmathresult/0.089807*0.1}\pgfmathresult}
         ] coordinates {
             (0.0, 0) (0.1, 0.089807) (0.2, 0.179723) (0.3, 0.268852) (0.4, 0.354310) (0.5, 0.441055)
             (0.6, 0.526386) (0.7, 0.61233) (0.8, 0.69044) (0.9, 0.75856) (1.0, 0.81703)
         };
 
         \addplot[
-            color=blue,
-            samples=2,
-            very thick,
-            dotted
-        ] {0.089807*10*x};
-        \legend{Measured, Linear Model}
-            
-        \end{axis}
-    \end{tikzpicture}
-\caption{RMS voltage at 100 MHz, 0dB attenuation}
-\end{figure}
-
-\begin{figure}[H]
-    \begin{tikzpicture}
-        \begin{axis}[
-            % title={RMS Voltage with 50\textOmega~termination \& 15dB attenuation},
-            xlabel={AD9910 Amplitude Scale Factor},
-            ylabel={DDS RMS Voltage ($mV_{rms}$)},
-            xmin=0, xmax=1,
-            ymin=0, ymax=200,
-            xtick={0, 0.2, 0.4, 0.6, 0.8, 1},
-            ytick={0, 40, 80, 120, 160, 200},
-            legend pos=north west,
-            ymajorgrids=true,
-            grid style=dashed,
-        ]
+            color=orange,
+            mark=square,
+            samples=11,
+            y filter/.code={\pgfmathparse{\pgfmathresult/50.0729*0.1}\pgfmathresult}
+        ] coordinates {
+            (0, 0) (0.1, 50.0729) (0.2, 100.309) (0.3, 150.996) (0.4, 200.905) (0.5, 250.004)
+            (0.6, 297.000) (0.7, 345.980) (0.8, 394.391) (0.9, 442.869) (1.0, 490.651) 
+        };
 
         \addplot[
-            color=blue,
+            color=green,
             mark=square,
-            samples=11
+            samples=11,
+            y filter/.code={\pgfmathparse{\pgfmathresult/28.4696*0.1}\pgfmathresult}
+        ] coordinates {
+            (0, 0) (0.1, 28.4696) (0.2, 57.143) (0.3, 85.776) (0.4, 114.694) (0.5, 143.302)
+            (0.6, 171.911) (0.7, 200.098) (0.8, 227.816) (0.9, 256.321) (1.0, 281.930)
+        };
+
+        \addplot[
+            color=red,
+            mark=square,
+            samples=11,
+            y filter/.code={\pgfmathparse{\pgfmathresult/16.6691*0.1}\pgfmathresult}
         ] coordinates {
             (0, 0) (0.1, 16.6691) (0.2, 33.3762) (0.3, 49.8844) (0.4, 67.055) (0.5, 83.652)
             (0.6, 99.970) (0.7, 116.906) (0.8, 133.368) (0.9, 150.839) (1.0, 167.033)
         };
-
-        \addplot[
-            color=blue,
-            samples=2,
-            very thick,
-            dotted
-        ] {16.6691*10*x};
-        \legend{Measured, Linear Model}
+        \legend{Expected response, 0dB attenuation, 5dB attenuation, 10dB attenuation, 15dB attenuation}
             
         \end{axis}
     \end{tikzpicture}
-    \caption{RMS voltage at 100 MHz, 15dB attenuation}
-    \end{figure}
-
-\end{multicols}
+\caption{RMS voltage scaled by expected voltage at ASF=1, 100 MHz}
+\end{figure}
 
 \newpage