diff --git a/fmmd_design_aide/fmmd_design_aide.tex b/fmmd_design_aide/fmmd_design_aide.tex
index 11bbcd1..899f981 100644
--- a/fmmd_design_aide/fmmd_design_aide.tex
+++ b/fmmd_design_aide/fmmd_design_aide.tex
@@ -569,4 +569,15 @@ DAH. The circuit is arguably safer now
 but statistically less reliable.
 
 
+\paragraph{Practical side effect of checking for thermocouple disconnection}
+
+Because the potential divider provides an offset as a side effect of detecting a disconnection
+resistance in the thermocopule extension or compensation cable will have an effect.
+For a `k' type thermocouple this would be of the order of $5 { }^{o}C$ for $100\Omega$ of
+cable loop impedance. Therefore, accuracy constraints and cable impedance should be considered
+to determine specified maximum compensation/extension lengths.
+
+
+
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