diff --git a/4456.tex b/4456.tex
index 82e657d..c1915dc 100644
--- a/4456.tex
+++ b/4456.tex
@@ -371,10 +371,12 @@ Test results are from the Krzysztof Belewicz's thesis ``Microwave synthesizer fo
 
 \newpage
 
-Phase noise performance of Mirny was tested using an ADF4351 evaluation kit through a DIO-tester\repeatfootnote{mirny_thesis}.
+Phase noise performance of Mirny was tested using the ADF4351 evaluation kit\repeatfootnote{mirny_thesis}.
+The SPI signal is driven by the evaluation kit, converted into LVDS signal by propagating through the DIO-tester card, finally arriving at the Mirny card.
 Mirny is then connected to the RSA5100A spectrum analyzer for measurement.
 
-Noise response spike can be improved by inserting a common-mode choke between the power supply and Mirny.
+Noise response spike can be improved by inserting an additional common-mode choke between the power supply and Mirny.
+Note that the common-mode choke is not present on the Mirny card.
 The following is a comparison between 2 setups at 1 GHz output:
 \begin{itemize}
     \item Red: Before any modifications