Bk Precision 20 Mhz Oscilloscope Model 2120 Manual
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Click to expand.That's about what I did. Works just fine. If I run across a Techtronix cheap in a surplus store, I' at least think real hard about it. But what I've got works just fine. If I happen to give it a jolt of too much voltage (I got higher rated probes than stock, though) or something, I don't have to cry all the way to the bank. Edit add: Not impressed with digital for working on amps, good old analog is just fine. Not interested in handheld, it's gonna sit on a bench so I can use all my paws at once.
I do like a larger screen.another point for a bench scope. The larger the screen, the easier it is to see small anomalies that give you important clues. Click to expand.I've used handheld scopes in the past, and the only good thing I can say about them is they're better than nothing. Certainly not the sort of thing you'd want to do any serious work with, or for any length of time, or very often. Portable is ok, though.
I've used lotsa those. 3d Studio Max Bip Files Download. You might want to check out ebay. Since microprocessors have become ubiquitous in nearly all things electronic, the market has been flooded with some very fine 'scopes up to 100Mhz for very little money, because they're just not fast enough for even rudimentary troubleshooting.
You'll regularly see $3,000 to $5,000 units going for $50 to $100. These are great for audio work, where signal frequencies are glacially slow relative to what you'll see in micro-based widgetry. The other nice thing is good 'scopes aren't usually entrusted to dingbats, so they're generally in very good condition. A 10-20 year old unit will often look and perform like new. My only caveat with used 'scopes is to stay away from the 'storage' models. The CRTs in those things have surprisingly short lifespans, and are very expensive to replace.
Fortunately, you rarely need that feature in audio work anyway, so it's easy to live without. Also, watch out for probes. You want at least one 10x probe, preferably two. If the 'scope doesn't come with them, they're surprisingly expensive. I paid nearly as much for the probe I had to buy as I did for the 'scope after the 'scope I bought didn't come with any.
Kitni Chahat Chupaye Baithe Ho there. Click to expand.I run an A2LA accredited calibration lab called Tangent Labs and can test calibrate/verify any electrical equipment you have. So if you get a suspect piece of equipment, I can tell you if it's in spec or out of spec, and whether or not you can repair it. I've checked unrepairable scopes and DMM's people have bought off of EBAY and Craig's List, and people have sent them back and got their money back from the seller. I know that's not always going to be the case, but a lot of people are selling bad electrical equipment that has been red-tagged, and there's really no one that can regulate it. I run an A2LA accredited calibration lab called Tangent Labs and can test calibrate/verify any electrical equipment you have.