diff --git a/4410-4412.tex b/4410-4412.tex
index f65f0d6..b1bf4a1 100644
--- a/4410-4412.tex
+++ b/4410-4412.tex
@@ -432,7 +432,7 @@ def run(self):
 \end{minted}
 
 If the synchronization feature of AD9910 was enabled, RF signal across different channels of the same Urukul can be synchronized.
-For example, synchronized RF signal can be produced on both channel 0 and channel 1 after configuring an appropriate phase mode.
+For example, phase-coherent RF signal can be produced on both channel 0 and channel 1 after configuring an appropriate phase mode.
 \begin{minted}{python}
 @kernel
 def run(self):
@@ -448,9 +448,11 @@ def run(self):
     self.dds1.set_phase_mode(PHASE_MODE_TRACKING)
     self.dds1.set_att(6.)
 
-    self.dds0.set(10*MHz)
-    self.dds1.set(10*MHz)
+    self.dds0.set(10*MHz, phase=0.0)
+    self.dds1.set(10*MHz, phase=0.25)   # 0.25 turns phase offset
 \end{minted}
+Note that the phase difference between the 2 channels might not be exactly 0.25 turns, but it is a constant.
+It can be negated by adjusting the \texttt{phase} parameter.
 
 \newpage
 \subsection{DDS RAM Modulation (AD9910 Only)}