This spreadsheet tool allows you to extrapolate from current probe measurements to far-field radiated emission measurements.
By measuring common-mode currents on all cables and entering them into the tool, you can discover whether your product is likely to pass or fail radiated emissions testing BEFORE going for full compliance testing.
Common-mode currents are the predominant cause of radiated emission failures below 1 GHz and current probe measurements offer the most cost effective and accurate method to do emissions (EMI) pre-compliance testing on your product.
“Of all the various types of EMC measurements that you could possibly do, the common-mode current measurement is the most useful.” – Henry Ott.
Generic manufacturer’s data provided for several probes:
The tool allows for support of up to 3 additional probes. Just enter the transfer impedance data for your specific probe into the tool.
*Microsoft Excel required. For copyright protection, the spreadsheet formulas are hidden and protected.
*Does not include spectrum analyzer or current probe.