I have a used Tek 2465A 400MHz big scope, it's really nice, BUT it's big. Forget about RMS and all the fancy features that pile up the cost on a meter, get a $40 meter and use the money to get a REAL scope.ĭon't want to pay the money, don't get the scope. You don't want to spend $150 on a stupid meter, it's only a meter, don't make it more that just a meter to measure resistance, DC and AC line voltage. Save the money on an expensive meter that a lot of people here suggested to buy and put the money on a decent scope. But if OP insist in saving small money, it's his money. There is a different way of looking at wasting money, to me the total waste of money is to buy something inferior just to save a penny and end up not using it and has to buy another one in the future. Those cheap pc scope has sampling rate of about 100MHz, it won't worth for $hit to be blunt. My issue with the cheap play scope is whether it can reliably triggered. If you can find a good old Tek 475, that's the only scope you need for all the audio work to FM radio. Yes, I second the good old used analog scope. So, does anyone have any experience with any of these models (for audio repair) and whether any features are worth upgrading to? There is a decent thread at eevblog comparing the Owon 1022i to the Hantek 6022BE which concludes that the Owon is superior. Looking at reviews, the really cheap (circa $20) usb scopes are nothing but sound card devices that (as elnaldo points out) can be replicated with your PC sound card and free software. I will be using it mainly for SS equipment (last time I used one was to adjust the tracking on my CD player) and my current reason for wanting one is a noisy FM tuner and I want to see if I can trace where the noise is coming from. On occasion I borrow a friend's big ol' tektronix and it drives me mad with the slow warm up, flakey wiring and heft. But I don't want to spend $200+ for something I use once a year (and would be one of the most expensive things I own). So I get what everyone says - buy a real scope. I'd say, try a software based scope 1st, and see if you need more than that. I think I'm trying to tell you that an USB scope that needs a computer to work, perhaps is not very handy. Very complete, very useful, but a real standalone scope is much better, (the computer has many more functions, but having a dedicate oscilloscope is easier to connect, to use, I've started to use it more and more because is always there ready to "plug and play"). I've used the computer based solution for a while. You can't measure DC voltages with the computer, just AC signals, since there will be a capacitor blocking the DC to protect the sound card. The best scope in the world is useless if you need to measure 22MHz and the scope is 20 MHz.įor audio bandwidth, I mean up to 20KHz, or tracing signals inside an amp, you can use simply the computer with a free software like "Visual Analyzer", and a front end DIY gig you need to build to protect the sound card and have 10x and 100x attenuations. Check the developer website (down) for more info.1st thing: you need to make sure what freq you'll need to measure. PAY ATTENTION: it requires USB OTG support on your phone and one of the listed oscilloscopes. The author decline any responsibility or liability for any damage, problem or analysis error resulting from the usage of this software. List of supported oscilloscopes on the website. Make your USB Oscilloscope portable with this App. Some: - HS502 Oscilloscope - HS10X, HS402 DIY Oscilloscopes - Loto OSC482, OSC802, OSCA02 - SainSmart DDS120 / Rocktech B
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