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05-14-2020, 07:52 PM
Hi Strelok
A meter with "true RMS" readout is often deemed to be more accurate on all scales, although this may not be the case. Most meters read AC mains voltages pretty accurately but may have a limited frequency range with that accuracy. A true-RMS meter might have better accuracy reading audio signal levels, but you don't know unless a bandwidth for AC is given. Every meter will generally give a reading for audio signals that is fairly close to reality.
How much resolution you need depends on what you intend to test or are trying to measure AND whether you have other test equipment like an oscilloscope to show waveforms by other means. A scope shows the peak values, but modern ones sometimes have built-in metering that is displayed on-screen.
Have fun
A meter with "true RMS" readout is often deemed to be more accurate on all scales, although this may not be the case. Most meters read AC mains voltages pretty accurately but may have a limited frequency range with that accuracy. A true-RMS meter might have better accuracy reading audio signal levels, but you don't know unless a bandwidth for AC is given. Every meter will generally give a reading for audio signals that is fairly close to reality.
How much resolution you need depends on what you intend to test or are trying to measure AND whether you have other test equipment like an oscilloscope to show waveforms by other means. A scope shows the peak values, but modern ones sometimes have built-in metering that is displayed on-screen.
Have fun
