ETS-Lindgren 95252-1 Bulk Current Injection Probes (Archived) - Manual (Page 6)

Application BULK CURRENT INJECTION PROBES
2 © ETS-Lindgren, L.P. – February 2005
Rev C – PN 399263
APPLICATION
The principal use of the bulk current injection probe is for inducing
relatively large RF currents into the signal and power circuits of
equipment under test for conducted susceptibility. A secondary
application would be to use the same probe in a more familiar role
as a sensor for measuring weak conducted RF currents.
CONDUCTED SUSCEPTIBILITY
Conducted susceptibility testing is intended to insure that RF
signals, when coupled on to interconnecting cables and power
supply lines of an IUT, will not cause malfunction or degradation
of performance. In addition, this testing can provide an amplitude
vs. frequency malfunction signature for the system which, when
compared with the levels of current on the cables in a typical
operating environment, can assist in the determination of adequate
safety margins.
TYPICAL TEST SETUP
Typical conducted susceptibility tests require that all power and
interconnecting cables be tested by subjecting them to the required
current or voltage levels, while monitoring the applied current
using a current probe. Usually, a reference level calibration is
performed using a calibration jig with a specified impedance. This
reference curve is then replayed to expose the IUT to a controlled
stress level, while a current probe is used to insure that a low
impedance IUT is not overstressed.
Note: Some tests may allow the reference calibration to be
performed at a lower level and then scaled up to the required
power level when applied to the IUT.
Archived 6/1/10