diff --git a/2118-2128.tex b/2118-2128.tex
index 0e09029..3600d4c 100644
--- a/2118-2128.tex
+++ b/2118-2128.tex
@@ -36,7 +36,7 @@
 
     Each channel supports 50\textOmega~terminations, individually controllable using DIP switches. Outputs tolerate short circuits indefinitely. Both cards are capable of a minimum pulse width of 3ns.
 
-    Note that isolated TTL cards are less suited to low-noise applications as the isolator itself injects noise between primary and secondary sides. Cable shields may also radiate EMI from the isolated grounds. For low-noise applications, use non-isolated cards such as 2238 MCX-TTL or 2245 LVDS-TTL.
+    Isolated TTL cards are not well suited to low-noise or low-jitter applications due to interference from isolation components. For low-noise applications, use non-isolated cards such as 2238 MCX-TTL or 2245 LVDS-TTL.
 
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@@ -359,6 +359,8 @@
     \end{threeparttable}
     \end{table}
 
+    Low-jitter applications should note carefully the jitter introduced by the signal isolator. Noise is also introduced between the primary and secondary domains by the DC/DC convertor. Where noise or jtter are crucial, it is instead recommended to use non-isolated cards such as 2238 MCX-TTL or 2245 LVDS-TTL.
+
     Minimum pulse width was measured by generating pulses of progressively longer duration through a DDS generator and using them as input for a BNC-TTL card. The input BNC-TTL card was connected to another BNC-TTL card as output. The output signal is measured and shown in Figure \ref{fig:pulsewidth}.
 
     \begin{figure}[ht]