ETS-Lindgren 7405 E & H Near Field Probe Set - Manual (Page 40)

40 Common Diagnostic Techniques www.ets-lindgren.com
D IFFERENTIAL M ODE T ECHNIQUES
Some traditional differential mode techniques
do not work in common mode situations
When differential mode solutions are applied to a common mode problem; many
of the techniques will prove ineffective. For example:
 Reducing circuit loop area: The radiating signal is on the signal and
return path, so this will be ineffective. Using twisted pair wires or coax
will yield little in the way of signal reduction.