The absorbing clamp is used for measurements according CISPR 13 / 14 / EN 55014-1, etc. In measurement setup the power cord of equipment under test has to be extended to a length of 6m. The cable is fed through the clamp’s opening and put on a nonmetallic table. It is connected to a power supply. The measuring receiver is connected to the 50 Ohms output of the clamp. The clamp, which is moveable on wheels, is driven along the cable to the power supply. If decoupling of the clamp is too weak, an optional decoupling clamp could be used on the power line close to the power plug. The detected maximum resonance is the requested measuring value. As the clamp is constructed to have 17dB coupling attenuation the receiver voltage (dBµV) is equal to the interference power (dBpW). A 6dB attenuator at the clamps output increases the measuring accuracy as described in CISPR 16-1-3 and the measuring result has to be corrected acc. to the attenuator’s value.