ETS-Lindgren 94456 Current Probe (Archived) - Manual (Page 14)

Operation MODEL 94456 CURRENT PROBES
10 © EMC TEST SYSTEMS, L.P. – MARCH 2002
REV B – PN 399265
microvolt. Use procedures outlined in the EMI test
equipment instruction manual.
2. Subtract the transfer impedance of the current probe in
dB at the test frequency from the dB measurement of
Step (1). The result is the value of the conducted CW
signal in terms of dB above one microamp at meter
input. 1
Example:
Frequency is 10.0 kHz; Step (1) measurement is 52 dB
above one microvolt. For example, suppose the transfer
impedance of the current probe used in the example was
8.0 dB below one Ohm at 10.0 kHz. Then, as outlined in
Step (2); 52 dB + 8.0 dB = 60 dB above one microampere
at meter input.
In Terms of dB Above One Microampere per
Megahertz at Meter Input (Broadband Interference
Measurement)
1. Adjust the EMI test equipment for standard gain and
make a Peak measurement of the broadband
interference (voltage output from the current probe) in
terms of dB above one microvolt-per-megahertz. Use
procedures outlined in the EMI test equipment
instruction manual.
2. Subtract the transfer impedance of the current probe in
dB at the test frequency from the dB measurement of
Step (1). The result is the value of the broadband
1 The term “at meter input” as used in the MIL-I-26600 and MIL-I-6181D specifications refers to the
current in the test sample lead.
Archived 6/1/10