Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best-selling in Signal & Spectrum Analysers
This is a stupid exercise. The HP331A hasn't been made for over 40 years. If you need a distortion analyzer, it is one of the best ever made, built like a battleship. But you have to find one that works--many of the parts are no longer available. I lucked out, the one I got works. Be aware that there are several different versions of this critter and the manuals available (free or otherwise) may not match, at least in the details. Good for up to 600 KHz, will reliably indicate distortion down to about 0.05% or so.
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i am very happy with this purchase, excellent price.
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