An attenuation measurement device, comprising: a detector unit having a coupling capacitance, and an input capacitance, wherein the detector is configured to produce a detector output signal (112a,b) in response to an input signal received at at least one of the coupling capacitance and the input capacitance; a test unit, coupled to the detector unit, and configured to provide a test signal with at least one known signal property as a first input signal to the coupling capacitance; characterized in that the detector output signal (112a, 112b) is a direct current, DC, detector output signal and in that the attenuation measurement device further comprises: a calibration unit, coupled to the detector unit, and configured to provide a calibration signal as a second input signal to the input capacitance, wherein the calibration signal is a DC calibration signal; and a control unit configured to determine a first detector output signal produced by the detector in response to the test signal, identify a specific calibration signal that yields a second detector output signal that is comparable to the first detector output signal, and derive a capacitance-indicative information based on the identified specific calibration signal. a detector unit having a coupling capacitance, and an input capacitance, wherein the detector is configured to produce a detector output signal (112a,b) in response to an input signal received at at least one of the coupling capacitance and the input capacitance; a coupling capacitance, and an input capacitance, wherein the detector is configured to produce a detector output signal (112a,b) in response to an input signal received at at least one of the coupling capacitance and the input capacitance; a test unit, coupled to the detector unit, and configured to provide a test signal with at least one known signal property as a first input signal to the coupling capacitance; characterized in that the detector output signal (112a, 112b) is a direct current, DC, detector output signal and in that the attenuation measurement device further comprises: a calibration unit, coupled to the detector unit, and configured to provide a calibration signal as a second input signal to the input capacitance, wherein the calibration signal is a DC calibration signal; and a control unit configured to determine a first detector output signal produced by the detector in response to the test signal, identify a specific calibration signal that yields a second detector output signal that is comparable to the first detector output signal, and derive a capacitance-indicative information based on the identified specific calibration signal. a calibration unit, coupled to the detector unit, and configured to provide a calibration signal as a second input signal to the input capacitance, wherein the calibration signal is a DC calibration signal; and a control unit configured to determine a first detector output signal produced by the detector in response to the test signal, identify a specific calibration signal that yields a second detector output signal that is comparable to the first detector output signal, and derive a capacitance-indicative information based on the identified specific calibration signal. determine a first detector output signal produced by the detector in response to the test signal, identify a specific calibration signal that yields a second detector output signal that is comparable to the first detector output signal, and derive a capacitance-indicative information based on the identified specific calibration signal.