ETS-Lindgren 94456 Current Probe (Archived) - Manual (Page 16)

Operation MODEL 94456 CURRENT PROBES
12 © EMC TEST SYSTEMS, L.P. – MARCH 2002
REV B – PN 399265
the current probe was 0.34 Ohms. Then, as outlined in Step
(2), 150/0.34 = 441.1 microamperes in test sample lead.
In Terms of Microampere per Megahertz in Test
Sample Lead (Broadband Interference
Measurement)
1. Adjust the EMI test equipment for standard gain and
make a measurement of the broadband interference
(voltage output from current probe), in terms of
microvolts-per-megahertz at meter input. Use
procedures outlined in the EMI test equipment
instruction manual.
2. Divide the microvolt-per-megahertz measurement of
Step (1) by the transfer impedance in Ohms at the test
frequency. The result is the value of conducted
broadband interference in terms of microamps-per-
megahertz in test sample lead.
Example:
Frequency is 10.0 kHz; Step (1) measurement is 8,000
microvolts-per-megahertz. For example, suppose the
transfer impedance of the current probe was 0.39 Ohms.
Then, as outlined in Step (2), 8000/0.39 = 20,513
microamps-per-megahertz in test sample lead.
Archived 6/1/10