Abstract: A device for emphasizing the relation of user interface sections comprises a first user interface section and a second user interface section. The first user interface section and the second user interface section are configured to display at least one of: an instrument parameter, a measurement result, a waveform. The device is configured to de-focus the second user interface section with respect to the first user interface section based on the selection of an instrument parameter in the first user interface section.

Abstract: The present invention relates to a data acquisition of measurement data together with further data specifying the operation during a measurement. For this purpose, I/Q measurement data are obtained and the steps for operating a measurement device during the measurement are monitored. A metadata package is generated, which includes the obtained I/Q measurement data along with the monitored steps of operating the measurement device.

Abstract: A signal analysis method is described. The signal analysis method includes: receiving an input signal having unknown characteristic signal parameters; determining IQ data being associated with the input signal; determining at least one of the characteristic signal parameters based on the IQ data via an artificial intelligence circuit; and adapting at least one measurement parameter of a measurement instrument based on the at least one characteristic parameter by the artificial intelligence circuit. Moreover, a signal analysis circuit is described.

Abstract: A signal analysis method is described. The signal analysis method includes: receiving an input signal having unknown characteristic signal parameters; determining IQ data being associated with the input signal; determining at least one of the characteristic signal parameters based on the IQ data via an artificial intelligence circuit; and adapting at least one measurement parameter of a measurement instrument based on the at least one characteristic parameter by the artificial intelligence circuit. Moreover, a signal analysis circuit is described.

Abstract: The present invention relates to a data acquisition of measurement data together with further data specifying the operation during a measurement. For this purpose, I/Q measurement data are obtained and the steps for operating a measurement device during the measurement are monitored. A metadata package is generated, which includes the obtained I/Q measurement data along with the monitored steps of operating the measurement device.

Abstract: A method and a device for determining a frequency mask disposed above or below a frequency spectrum of a detected signal determines every individual ordinate value of a first envelope curve disposed completely above or below the frequency spectrum as the maximum value or minimum value of a given number of respectively adjacent ordinate values of the frequency spectrum linked to a window function. Following this, each individual ordinate value of a second envelope curve disposed completely above or below the frequency spectrum and completely above or below the first envelope curve is determined as the maximum value or minimum value of a given number of respectively adjacent ordinate values of the frequency spectrum linked to a window function.

Abstract: A method and a device for determining a frequency mask disposed above or below a frequency spectrum of a detected signal determines every individual ordinate value of a first envelope curve disposed completely above or below the frequency spectrum as the maximum value or minimum value of a given number of respectively adjacent ordinate values of the frequency spectrum linked to a window function. Following this, each individual ordinate value of a second envelope curve disposed completely above or below the frequency spectrum and completely above or below the first envelope curve is determined as the maximum value or minimum value of a given number of respectively adjacent ordinate values of the frequency spectrum linked to a window function.

Abstract: A method for clock synchronisation between an amplitude-modulated or phase-modulated received signal (r(t)) and a transmitted signal (s(t)) estimates the timing offset (?) between the received signal (r(t)) and the transmitted signal (s(t)) by means of a maximum-likelihood method. The maximum-likelihood method in this context is realised by an estimation filtering (S40; S140) dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function (S50; S150) and an averaging filtering (S60, S100; S180, S200). The received signal (r(t)) is especially a modified vestigial-sideband-modulated received signal (rVSB?(t)). The nonlinear signal-processing function (S50; S150) maintains the alternating component in the spectrum of the pre-filtered vestigial-sideband-modulated received signal (vVSB?(t)).

Abstract: A method and a device for carrier-frequency synchronization of a vestigial-sideband-modulated received signal (rVSB(t)) with a carrier signal (ej(2?(fT+?f)t+??)), which is affected by a frequency offset and/or phase offset (?f, ??), estimates the frequency offset and/or phase offset (?f, ??) of the carrier signal (ej(2?(fT+?f)t+??)) by means of a maximum-likelihood estimation. For this purpose, the vestigial-sideband-modulated received signal (rVSB(t)) is converted into a modified vestigial-sideband-modulated received signal (xVSB?(t?)), which provides time-discrete complex rotating phasors (|xVSB?(t?)|·ej2??f·t?+??), in which only the time-discrete phases (2??ft?+??) are dependent upon the frequency offset and/or phase offset (?f, ??).

Abstract: A method for clock synchronisation between an amplitude-modulated or phase-modulated received signal (r(t)) and a transmitted signal (s(t)) estimates the timing offset (?) between the received signal (r(t)) and the transmitted signal (s(t)) by means of a maximum-likelihood method. The maximum-likelihood method in this context is realised by an estimation filtering (S40; S140) dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function (S50; S150) and an averaging filtering (S60, S100; S180, S200) The received signal (r(t)) is especially a modified vestigial-sideband-modulated received signal (rVSB?(t)). The nonlinear signal-processing function (S50; S150) maintains the alternating component in the spectrum of the pre-filtered vestigial-sideband-modulated received signal (vVSB?(t)).

Abstract: A method for clock synchronisation between an amplitude-modulated or phase-modulated received signal (r(t)) and a transmitted signal (s(t)) estimates the timing offset (?) between the received signal (r(t)) and the transmitted signal (s(t)) by means of a maximum-likelihood method. The maximum-likelihood method in this context is realised by an estimation filtering (S40; S140) dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function (S50; S150) and an averaging filtering (S60, S100; S180, S200). The received signal (r(t)) is especially a modified vestigial-sideband-modulated received signal (rVSB?(t)). The nonlinear signal-processing function (S50; S150) maintains the alternating component in the spectrum of the pre-filtered vestigial-sideband-modulated received signal (vVSB?(t)).

Abstract: A method and a device for carrier-frequency synchronisation of a vestigial-sideband-modulated received signal (rVSB(t)) with a carrier signal (ej(2?(fT+?f)t+??)), which is affected by a frequency offset and/or phase offset (?f, ??), estimates the frequency offset and/or phase offset (?f, ??) of the carrier signal (ej(2?(fT+?f)t+??)) by means of a maximum-likelihood estimation. For this purpose, the vestigial-sideband-modulated received signal (rVSB(t)) is converted into a modified vestigial-sideband-modulated received signal (xVSB?(t?)), which provides time-discrete complex rotating phasors (|xVSB(t?)·ej2??f·t?+??), in which only the time-discrete phases (2??ft?+??) are dependent upon the frequency offset and/or phase offset (?f, ??).

Abstract: The invention relates to a method and a measuring device for determining a characteristic curve of a high frequency transmitter for transmitting a high frequency signal modulated with a modulation signal. A high frequency signal transmitted by the high frequency transmitter is received by a receiving device (16) and samples of a complex value, real baseband signal (MEAS) are generated therefrom. By demodulation of the samples of the real baseband signal (MEAS), a modulation symbol sequence (SYM) is obtained, from which an ideal baseband signal (REF) is simulated as reference signal. The real baseband signal (MEAS) is corrected, a corrected, real baseband signal (MEAS?) is generated and the deviations of the samples of the corrected, real baseband signal (MEAS?) from the samples of the ideal baseband signal (REF) are evaluated.

Abstract: The invention relates to a method and a measuring device for determining a characteristic curve of a high frequency transmitter for transmitting a high frequency signal modulated with a modulation signal. A high frequency signal transmitted by the high frequency transmitter is received by a receiving device (16) and samples of a complex value, real baseband signal (MEAS) are generated therefrom. By demodulation of the samples of the real baseband signal (MEAS), a modulation symbol sequence (SYM) is obtained, from which an ideal baseband signal (REF) is simulated as reference signal. The real baseband signal (MEAS) is corrected, a corrected, real baseband signal (MEAS′) is generated and the deviations of the samples of the corrected, real baseband signal (MEAS′) from the samples of the ideal baseband signal (REF) are evaluated.