Products > Test Equipment
Cheap and Small Dynamic Signal Analyzer?
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gigavolt:

--- Quote from: Berni on August 20, 2020, 05:11:17 am ---Guess more of a problem is that very few people actually want one. They are perfectly happy with there existing Rigol scope.

--- End quote ---

That too, because ultimately the reason I would want it is for better noise performance/higher dynamic range, but in a much smaller bandwidth (<100 kHz) than my scope.  I'm guessing most hobbyists can "get by" with 8 bits.
Frex:
Hello,

Just for information, I currently design such type a device.
It's a full open source 2 channels analyzer that use the LT2380-24,
a  24 bits 2MSPS high performance ultra low THD ADC.
It's not really a very low cost device and the full project is not yet finished.
(I'm writing the FPGA firmware for now).
Anyway, maybe that can interest some people.
I publish the project advancement on a DIYaudio thread HERE

The design has been firstly checked with tweaked EVM boards few years ago,
all details and history can be read on this other thread HERE .

Regards.

FRex

 
maxwell3e10:
This is a cool project! I guess for a general purpose device one might make a more versatile input stage, with several different gain settings and a good single-ended noise level.
KE5FX:
Very nice.  I was about to say that any effort along these lines needs to be multichannel.  I'm short on free time at the moment but will bookmark the diyaudio thread(s) for later perusal.  :-+
trampas:
I was looking for something like the DSA that can measure amplifier noise floor and was wondering what options are out there?
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