A signal analysis system includes a memory that stores instructions; and a processor that executes the instructions. When executed by the processor, the instructions cause the signal analysis system to: transform a digitized radio frequency signal into a first transformed digital signal; digitally downconvert the digitized radio frequency signal to a first baseband signal; filter the first baseband signal into a first filtered signal; transform the first filtered signal into a second transformed digital signal; compute a first phase noise spectrum from the second transformed digital signal, detect spurs and frequencies corresponding to the spurs in the first phase noise spectrum, and set frequency bins which do not include spurs to zero to generate a modified second transformed digital signal; inversely transform the modified second transformed digital signal into a first complex time-domain baseband signal; demodulate a first phase signal in the first complex time-domain baseband signal to obtain a first demodulated signal; and obtain an average of slopes of the first demodulated signal, and obtain an average frequency error from the average of slopes of the first demodulated signal.

In one embodiment, a power supply comprises: a conversion circuit that outputs an output voltage at a first end of a cable; a remote voltage sensor measures a load delivered voltage from a second end of the cable; a control logic, wherein the power conversion circuit regulates the output voltage based on a signal from the control logic; a current sensor that measures current flow through the cable; and a resistance measurement circuit that computes a resistance of the cable as a function of the load delivered voltage, the current flow and the output voltage. The control logic regulates the load delivered voltage based on a voltage drop calculated utilizing the resistance. The control logic detects a change in the resistance of the cable based on the load delivered voltage and dynamically updates a value of the resistance for calculating the voltage drop when the change exceeds a tolerance.

To enable in a circuit arrangement (8) with a transformer with center tap the voltage measurement on the secondary side simply and safely, it is provided that at least two series-connected resistors (R3, R4) are connected between the two outer connections (A1, A2) of the secondary side of the transformer (T) to form a measurement point (P) between the two resistors (R3, R4), and a voltage measurement unit (V) is provided to measure the voltage (U.sub.P) between the measurement point (P) and the second output pole (13), which corresponds to the output voltage (U.sub.A).

Circuit board comprising a printed circuit comprising phase conductors, each of which is arranged so as to be connected to one phase of a multiphase line, the circuit board further comprising a rectifier bridge comprising phase diodes that are mounted on one and the same face of the printed circuit, the phase diodes comprising, for each phase conductor, one pair of phase diodes comprising a first phase diode having an anode that is connected to said phase conductor and a second phase diode having a cathode that is connected to said phase conductor, the pairs of phase diodes lying in succession along a positioning axis on the face of the printed circuit, the first phase diode and the second phase diode of each pair of phase diodes being positioned in parallel but inverted with respect to each other.

A readout circuit for resistive and capacitive sensors includes a first input coupled to a reference resistor in a first mode of operation and coupled to a resistive sensor in a second mode of operation; a second input coupled to a capacitive sensor in the first mode of operation and coupled to a reference capacitor in the second mode of operation; and an output for providing a capacitive sensor data stream in the first mode of operation and for providing a resistive sensor data stream in the second mode of operation.

A measuring apparatus is provided for electrical signals. The measuring apparatus includes an analog-to-digital (A/D) converter configured to A/D-convert an analog signal to be measured, and an integrator configured to perform integration time processing for a plurality of digital values output from the A/D converter based on an integration time. The integrator is configured to output a plurality of measured values obtained by the integration time processing. A noise level calculation unit is configured to calculate a noise level of the analog signal to be measured from the plurality of measured values obtained by the integration time processing, and a display unit is configured to display noise levels corresponding to a plurality of integration times.

Systems and methods are provided for compensating for parasitics in current measurements utilizing series current sense resistors. In one or more embodiments, the techniques include connecting a probe to a terminal of a circuit and a waveform measuring device. A waveform measuring device then acquires, through the probe, a voltage waveform. A virtual probe netlist is generated, where the netlist is descriptive of a series resistance and associated parasitics. A virtual probe processor converts, based on the virtual probe netlist, the voltage waveform to a current waveform representative of a current in the circuit.

There is provided a system for use with a fiber-optic current transducer. The system includes a processing unit configured to transduce a first light signal into a first electrical signal. The processing unit is further configured to transduce a second light signal into a second electrical signal. The processing unit is configured to remove offsets from the first electrical signal and the second electrical signal by forcing the first electrical signal and the second electrical signal to be on the same per unit basis. Furthermore, the processing unit is configured to combine the first electrical signal and the second electrical signal to produce a composite signal, the composite signal being free of the offsets. And the processing unit is further configured to linearize the composite signal to produce an output current indicative of a current flowing in a conductor disposed proximate the FOCT.

To enable in a circuit arrangement (8) with a transformer with center tap the voltage measurement on the secondary side simply and safely, it is provided that at least two series-connected resistors (R3, R4) are connected between the two outer connections (A1, A2) of the secondary side of the transformer (T) to form a measurement point (P) between the two resistors (R3, R4), and a voltage measurement unit (V) is provided to measure the voltage (U.sub.P) between the measurement point (P) and the second output pole (13), which corresponds to the output voltage (U.sub.A).

Systems, apparatus, and methods that provide a flexible current sensor capable of measuring current flowing through a conductor without contacting the conductor. In various implementations, a flexible current sensor may have a comparable size, shape, and appearance as a flexible loop of a Rogowski coil, except the current sensor described herein can sense direct current (DC). The current sensors of the present disclosure utilize a novel open loop degaussing mechanism to provide accurate DC current measurements in a conductor. To achieve this, a current sensor includes an AC degaussing coil wrapped around a magnetic core. A driver circuit drives an AC degaussing signal in the AC degaussing core, which operates to reset or degauss the magnetic core, thereby providing more accurate current measurements.