diff --git a/4410-4412.tex b/4410-4412.tex
index a5ddc1e..4fe2b4a 100644
--- a/4410-4412.tex
+++ b/4410-4412.tex
@@ -907,11 +907,11 @@ The DDS channel is terminated with 50\textOmega.
     grid=both,
     height=8cm,
     width=12cm,
-    ymin=0, ymax=180, ytick={0,16,...,160}, ylabel=DDS RMS Voltage ($mV_{rms}$),
+    ymin=-5, ymax=180, ytick={0,16,...,160}, ylabel=DDS RMS Voltage ($mV_{rms}$),
     xmin=-10, xmax=10, xtick={-10,-8,...,10}, xlabel=Sampler Voltage ($V$),
 ]
 
-\addplot[blue, samples=21, domain=-10:10]{func(x)};
+\addplot[very thick, blue, samples=21, domain=-10:10]{func(x)};
 \end{axis}
 \end{tikzpicture}
 \end{center}
diff --git a/5108.tex b/5108.tex
index 5700fe5..93a9b8e 100644
--- a/5108.tex
+++ b/5108.tex
@@ -667,11 +667,11 @@ The DDS channel is terminated with 50\textOmega.
     grid=both,
     height=8cm,
     width=12cm,
-    ymin=0, ymax=180, ytick={0,16,...,160}, ylabel=DDS RMS Voltage ($mV_{rms}$),
+    ymin=-5, ymax=180, ytick={0,16,...,160}, ylabel=DDS RMS Voltage ($mV_{rms}$),
     xmin=-10, xmax=10, xtick={-10,-8,...,10}, xlabel=Sampler Voltage ($V$),
 ]
 
-\addplot[blue, samples=21, domain=-10:10]{func(x)};
+\addplot[very thick, blue, samples=21, domain=-10:10]{func(x)};
 \end{axis}
 \end{tikzpicture}
 \end{center}