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The HP 339A Distortion Measurement Set is an ulta-low distortion measuring system complete with total harmonic distortion (THD) analyzer, true rms voltmeter, and sinewave oscillator. This light-weight bench instrument allows you to make THD measurements over the 10 Hz to 110 kHz frequency band, including harmonics to 330 kHz. With the built-in tracking oscillator in the HP 339A, you only need to tune one instrument instead of two. Input filters are included to speed test time. The 30 kHz low-pass filter provides the bank limiting required by FCC proof-of-performance broadcast testing. An 80 kHz low-pass filter an 400 Hz high pass filter reduce high frequency noise and line frequency hum. The fundamental frequency range is 10 Hz to 110 KHz with continuous frequency coverage with 2-digit resolution. The distortion analyzer and oscillator are tuned simultaneously. Distortion measurement range is 100% to 0.01%, (0 dB to -80 dB).
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