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In Reply to: This is interesting where Dave is comparing an old HP dedicated Spectrum analyzer posted by Michael Samra on May 13, 2016 at 23:35:38:
I don't think this video is useful. He frequently points to the HP and says that its busier display indicates superiority. It's been my experience that just the opposite is usually true. In my day job (RF/microwave), we always have to take special measures to rule out the possibility that higher than normal levels of harmonic energy or unexpected spurs aren't being generated in the analyzer itself. It's a common problem, and for me, the video has no credibility because of this.If you've got a few bucks to toss on the bench, one of the best instruments for audio spectrum work is the analog Stanford Research 760. It will trounce either of the machines in that video for what we do. The downside to the SR760 (and the HP in the video) is that neither can be used to search for HF spurs caused by amplifier oscillations. They simply don't span out far enough for that. For someone on a budget, a better choice might be to buy an Agilent 8560E (30 Hz - 2.9 GHz) for spur searches, and use a soundcard-based FFT for audio spectrum analysis. The latter will do things that basic spectrum analyzers can't, such as automatic THD and IM calculations.
Edits: 05/14/16
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Follow Ups
- RE: This is interesting where Dave is comparing an old HP dedicated Spectrum analyzer - Triode_Kingdom 09:31:53 05/14/16 (6)
- one of the best instruments for audio spectrum work is the analog Stanford Research 760. It will trounce eithe - Michael Samra 20:47:35 05/14/16 (0)
- RE: This is interesting where Dave is comparing an old HP dedicated Spectrum analyzer - Michael Samra 12:27:41 05/14/16 (4)
- RE: This is interesting where Dave is comparing an old HP dedicated Spectrum analyzer - Triode_Kingdom 13:42:13 05/14/16 (3)
- Well be that as it may,I need a new RF signal generator as my old - Michael Samra 20:20:15 05/14/16 (2)
- RE: Well be that as it may,I need a new RF signal generator as my old - Triode_Kingdom 09:47:32 05/15/16 (1)
- I hear you.I hate the digital stepped output control because - Michael Samra 12:06:34 05/15/16 (0)
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