Current Probes

Current probes usually serve as a transducer by converting current to voltage. They measure common mode antenna currents that flow on cables or wires. When selecting a current probe, it is important to consider the required frequency range for the test, the size of the harness to be measured, and the probe's sensitivity to measuring signals at the limit level. 

Current probes work by placing a conductor that carries the current to the sensing window of the probe and then testing the probe's output voltage with the RF detector. The calibration factor of the current probe is called a transfer impedance curve and is given in W or dB(W). Each probe has a frequency range that is found in the impedance curve. 

Current probes are convenient for establishing EMC compliance before beginning a test or while preparing for testing because a defective filter or bonded cable could cause radiated emissions failure, wasting time and money.

Avalon Test Equipment carries a variety of current probes from top manufacturers (Keysight, LeCroy, and more) to meet testing requirements.

Rent or purchase from Avalon and Test With Confidence®.