Oscilloscope & sine wave oscillator - INR15000 (Banshankari)

Somewhat off topic: I downloaded this is a visual analyzer for my speaker and subwoofer tuning. It does oscilloscope, frequency analyzer, sweep signal generation and a lot more. It is a freeware and can be downloaded here: Visual Analyser 2011 XE

It is a brilliant toy for tweaking your audio system. Only drawback is that it uses headphone out and PC mic, which are usually limited to 20khz, so may not be useful for HF projects. And yeah, somewhat cumbersome UI :)
 
I have this kit assembled.

Mostly used for analyzing output and audio distortion. For function generator I used sine wave files from internet.

You can buy it here as kit and complete ready made version here.

With combination of sweep generator and other frequency dividers this can rock.
But I tried to stay away from that stuff now.
 
ARTA suffices in most cases. Sound card isn't very precise, so voltage measurements are not so accurate. Linearity of a sound card is also limited, but it's sufficient for DIYers.
 
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