ETS-Lindgren 7405 E & H Near Field Probe Set - Manual (Page 35)

www.ets-lindgren.com Common Diagnostic Techniques 35
C OMMON AND D IFFERENTIAL M ODE C URRENT F LOW
From the local perspective of the unit, this is a common mode situation;
EMC/EMI problems may be classified principally as current-related or
voltage-related. Current-related problems are normally associated with
differential mode situations. Likewise, voltage problems are normally associated
with common mode circuit situations. Too often solutions are attempted before
the radiating parameter is understood. Unfortunately, solutions effective for
differential mode are seldom effective against a common mode problem.