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We usually use time as a frame of reference, focusing on when certain specific events will occur. This includes electrical events. Oscilloscopes allow you to view the instantaneous value of a particular electrical event (or the voltage value of some other event converted by an appropriate transducer) over time. In other words, we can use an oscilloscope to view the waveform of a signal in the time domain. Fourier theory tells us that any electrical phenomenon in the time domain consists of one or more sinusoids with the appropriate frequency, amplitude, and phase. This means that we can convert a time-domain signal to its frequency-domain equivalent. Spectrum analyzers and signal analyzers can measure the energy at each specific frequency in the frequency domain.
A digital multimeter is a versatile test and measurement tool that can measure many types of signals. To learn more about how to measure voltage, current, 2-wire resistance, 4-wire resistance, capacitance, temperature, diode and oscillating signal frequencies, as well as how to check for conductivity, visit our blog by clicking the link below. How to use a digital multimeter ,
View Full VersionWant to know how to use the current probe? Please first understand the following basic usage of the current probe and precautions for use. Since electricity is invisible, it is not possible to immediately determine whether a malfunction has occurred. In some cases, current measurements are required on a daily basis to prevent malfunctions, as well as to identify the cause of malfunctions when they do occur. Digital multimeters, clamp meters, and current probes can be used...
View Full VersionA signal that looks very complex in the time domain behaves quite differently in the frequency domain. Time domain measurements show an impure sine wave. Without frequency domain measurements, it is still impossible to know the source and frequency of the second harmonic. Spectral analysis can show the spectral components individually, thus revealing the source of the interference. The information provided in the time domain (e.g., the signal pulse on...
View Full VersionVector network analyzers (VNAs) are test instruments that measure electrical network parameters. They are essential for radio frequency (RF) and microwave component analysis of a wide variety of passive and active devices including filters, antennas and power amplifiers. Network analyzers are ideal for transmission, reflection and impedance measurements as well as s-parameter measurements during design and production. Network analyzers...
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