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| Audio Analyzers (but not a toy) |
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| Floopy:
--- Quote from: 4thDoctorWhoFan on June 27, 2023, 02:03:04 pm ---There is the HP 3561A which is nice. Old but nice. --- End quote --- Second that, they're nice, but the screens tend to fail easily because of the flyback. They do DC - 100kHz, I've had one for years. |
| Grandchuck:
I have an HP 8903B but lately have been using REW software along with a Focusrite Scarlet Solo. You can see, for the cost, the performance is good: https://www.eevblog.com/forum/testgear/question-cheap-pure-sine-wave-genertor-1khz/msg4737746/#msg4737746 |
| MathWizard:
What is the problem a wide BW SA has with low frequencies ? And why are AA so expensive then ? Measuring up into the GHz must be way harder and more expensive than audio to AM radio Frequencies. IDK I just figured a SA could do better, even if they added another PCB for LF |
| Sighound36:
I feel that pretty much all the audio analysers are 24bit adc's with large signal to noise ratio's of upt 120dB. Plus many different audio/Blue tooth/I2s/rub & buzz and headphone measurment applications. They all perform both digital & analogue domain measurments The APX555b offers 1.2M FFT's from dc-200Khz. Does this justify the cost, for hobbists no it's out of the equation. Although these are mainly geared for production line testing with they ability to set up multipule tests in sequence mode We have four audio analysers R&S UPV66 all options / AP APX555B most options / Prism sound D scope series III / Standford research SR1 (under rated in my book). IMHO the Picoscope 4262 is also a great device for audio investigation up to 16 bits of resolution 16Mpts buffer, decent analogue genny and really good FFT's and for the cost its decent, a couple of us on here use them regularly for good reasons. As good as all these audio anaysers are, I still use the Lecroy attached at the same time to the signle ended analogue outputs using both time & frequency domain above the usual audio BW restrictions, you can see a lot more going on further up the rev range if you like ;D This peaked my interest although purely an analogue domain unit, its features and size make it ideal for a portable in the field unit. https://www.virtins.com/RTX6001.shtml Would also agree with the HP 3561A as well if you have the spa on the bench. |
| mawyatt:
We second the PicoScope 4262, although don't use as much as we should since it requires a laptop, and we much prefer a dedicated standalone DSO. Also does quite a respectable job as a low frequency FFT analyzer, or FRA. Best, |
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