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Miscellaneous Automotive
Car Electronics & Appearance
Looking for a Cheap Oscilloscope
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<blockquote data-quote="Lasherž" data-source="post: 8717932" data-attributes="member: 679555"><p>Don't concern yourself too much with accuracy on oscilloscopes particularly for audio. All you're looking for is if it's clipping and that's clear whether it's 1% off or not. Oscilloscopes don't offer better accuracy than similar-priced multimeters anyways. The important metric you're looking for in audio is having enough plot points on the display and samples for any given audible frequency to clearly see a clip. Even the cheap ones will allow you to zoom in on it, but if there's not enough samples it'll be hidden. A general rule of thumb is that the sampling rate should be at least twice the frequency you want to measure to get an accurate idea for the waveform. Only the absolute trashiest ones ever won't be able to sample beyond audio signals.</p><p></p><p>I would just ask yourself if you ever want to do anything more with it. If you don't then the products mentioned so far have all been good for the bare minimum, even the dd-1 although it's not a scope. If you do want it to do more then get something like a baseline Rigol, BK precision, Siglent, or Agilent used on ebay.. Those will extend into fixing circuit boards and digital logic with ease, they're significantly more expensive, but you won't have to buy it twice in that case.</p></blockquote><p></p>
[QUOTE="Lasherž, post: 8717932, member: 679555"] Don't concern yourself too much with accuracy on oscilloscopes particularly for audio. All you're looking for is if it's clipping and that's clear whether it's 1% off or not. Oscilloscopes don't offer better accuracy than similar-priced multimeters anyways. The important metric you're looking for in audio is having enough plot points on the display and samples for any given audible frequency to clearly see a clip. Even the cheap ones will allow you to zoom in on it, but if there's not enough samples it'll be hidden. A general rule of thumb is that the sampling rate should be at least twice the frequency you want to measure to get an accurate idea for the waveform. Only the absolute trashiest ones ever won't be able to sample beyond audio signals. I would just ask yourself if you ever want to do anything more with it. If you don't then the products mentioned so far have all been good for the bare minimum, even the dd-1 although it's not a scope. If you do want it to do more then get something like a baseline Rigol, BK precision, Siglent, or Agilent used on ebay.. Those will extend into fixing circuit boards and digital logic with ease, they're significantly more expensive, but you won't have to buy it twice in that case. [/QUOTE]
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