Measurement device for performing measurements with respect to a DUT

A measurement system comprising:

• a measurement device comprising:
• a port for receiving a signal from a device under test,
• a signal level attenuator for modifying the corresponding level of the signal in order to form a modified signal, the signal level attenuator being operable in at least a first operation mode and a second operation mode being different, as to its signal level, from the first operation mode,
• a receiver for receiving and digitizing the modified signal in order to a form a digitized modified signal, and
• a processing unit,
• wherein the processing unit is configured to receive a first data stream of the digitized modified signal for the case that the signal level attenuator is operated in the first operation mode and to receive a second data stream for the case that the signal level attenuator is operated in the second operation mode, and wherein the processing unit is configured to determine non-linearity of the receiver on the basis of a comparison of the first data stream and the second data stream;
• and
• the device under test connected to said measurement device.

A measurement method for performing measurements with respect to a device under test, the measurement method comprising the steps of:

• receiving a signal from the device under test,
• modifying the corresponding level of the signal with the aid of a signal level attenuator in order to form a modified signal, the signal level attenuator being operable in at least a first operation mode and a second operation mode being different from the first operation mode,
• receiving and digitizing the modified signal with the aid of a receiver in order to a form a digitized modified signal,
• receiving a first data stream of the digitized modified signal for the case that the signal level attenuator is operated in the first operation mode with the aid of a processing unit,
• receiving a second data stream for the case that the signal level attenuator is operated in the second operation mode with the aid of the processing unit, and
• determining non-linearity of the receiver on the basis of a comparison of the first data stream and the second data stream with the aid of the processing unit.