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A 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. While the information provided by the time domain (such as the rise and fall times of signal pulses) is important, the frequency domain allows you to determine the harmonic content of the signal, such as out-of-band emissions and distortion. For more information, read this blog post:Spectrum Analysis Basics Part 1 - What is a Spectrum Analyzer?
Arbitrary waveform generators are a type of signal generator that generate realistic waveforms and provide a wide range of excitation signals. The various types of signals they generate are often used to stress test devices for communication protocols. ,
View Full VersionA function generator is an electronic test device that generates a variety of standard waveforms for a device under test (DUT), such as sine, square, ramp, or sawtooth waveforms. In circuit design and circuit boards, testing often requires the use of controlled signals to simulate routine operations. Testing physical systems and sensors often requires stable and reliable signals that are as low as a few microvolts and may be as high as...
View Full VersionHow do I measure voltage? If you use a multimeter, anyone can measure it easily ■ Summary Since voltage is not visible to the naked eye, it is not possible to confirm "how much voltage is flowing through a circuit at a glance". However, the circuits of electronic devices have a set voltage for normal operation, and if the voltage is too high, it may lead to product malfunction or personal injury. In addition, ...
View Full VersionThis article describes its basic information and how it differs from an analog multimeter. ■ Summary The condition of an electronic device needs to be determined using a measuring instrument. For electronic devices whose condition cannot be determined visually, it is recommended that measurements be made with a digital multimeter. In this section, basic information about digital multimeters such as "What is a digital multimeter" and "Is there a difference between a digital multimeter and an analog multimeter" will be explained in detail...
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