How to Check a Crystal Oscillator Using a Multimeter
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Загружено: 2025-05-04
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How to Check a Crystal Oscillator Using a Multimeter
While a multimeter can't directly measure a crystal oscillator's frequency, it can offer some clues about its functionality. Firstly, check the power supply voltage reaching the oscillator circuit to ensure it's within the specified range. A missing or incorrect voltage is a common cause of failure. Secondly, with the power off, check for shorts to ground from the oscillator's output pin; a short indicates a potential problem. Finally, with the power on, use a multimeter in DC voltage mode to look for a fluctuating voltage on the oscillator's output pin. Note that this is not a definitive test, as a small or non-existent voltage doesn't guarantee a faulty oscillator, and some oscillatiors may not show any measurable voltage change at all. More specialized equipment like an oscilloscope or frequency counter is needed for accurate frequency and waveform analysis.
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