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| Choosing an oscilloscope |
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| 2N3055:
--- Quote from: tautech on October 03, 2020, 08:01:15 pm --- --- Quote from: 0culus on October 03, 2020, 07:20:10 pm ---If he can get it cheap it could be something to grow into even if it turns out to be a project. --- End quote --- But lessens the budget to get something better and just stifles getting on with your projects. For once I'm with Fungus and his thanker Nico on this one. If one gets a hankering to fix scopes later there's plenty of cheap ones available if you are patient and by then you've become a little proficient using a scope. --- End quote --- I agree too. To repair old scope, most of the time you need another scope... :-// That makes it a nightmare for beginner with very little money. Old scope cannot be first and only scope, unless you get working one for free or close to free. You can get new scope with warranty for less than 300€ (+tax). I sold my barely used DS1074Z for 200€ with 4 new testec 150 MHz probes and really super high quality, brand new Rigol bag. There is also https://shop.rigol.eu/ demo equipment shop. They give warranty (slightly shorter but nevertheless a warranty) and prices are good.. |
| David Hess:
--- Quote from: Fungus on October 03, 2020, 02:13:00 pm --- --- Quote from: David Hess on October 03, 2020, 12:35:13 pm ---Of those, the Tektronix 2235 is the best documented and easiest to repair. The Fluke PM3370A is a lot more complicated because of its digital storage capability and I would not recommend it unless you are prepared to repair and maintain a more complex instrument. --- End quote --- Somebody who's buying their first oscilloscope and trying to save money shouldn't be thinking of repairing or maintaining at all, IMHO. An entry level DSO isn't that expensive. --- End quote --- You have to cut the coat to fit the cloth. If he says that he cannot afford a reasonable new DSO, but can afford a working 2235, then some oscilloscope is better than no oscilloscope. Sometimes one has to make the best of a bad situation, or even take a risk. PurpleAmaranth does not give a location or price, but I would not spend more than $100 for any 2235, and I would not buy any new DSO which cost less than $500. |
| tggzzz:
--- Quote from: David Hess on October 03, 2020, 09:55:20 pm --- --- Quote from: Fungus on October 03, 2020, 02:13:00 pm --- --- Quote from: David Hess on October 03, 2020, 12:35:13 pm ---Of those, the Tektronix 2235 is the best documented and easiest to repair. The Fluke PM3370A is a lot more complicated because of its digital storage capability and I would not recommend it unless you are prepared to repair and maintain a more complex instrument. --- End quote --- Somebody who's buying their first oscilloscope and trying to save money shouldn't be thinking of repairing or maintaining at all, IMHO. An entry level DSO isn't that expensive. --- End quote --- You have to cut the coat to fit the cloth. If he says that he cannot afford a reasonable new DSO, but can afford a working 2235, then some oscilloscope is better than no oscilloscope. Sometimes one has to make the best of a bad situation, or even take a risk. PurpleAmaranth does not give a location or price, but I would not spend more than $100 for any 2235, and I would not buy any new DSO which cost less than $500. --- End quote --- Precisely. Any working scope is better than none, unless the money could be better spent on other equipment. With skill and imagination you can do a hell of a lot without a scope! |
| David Hess:
--- Quote from: tggzzz on October 03, 2020, 10:06:33 pm --- --- Quote from: David Hess on October 03, 2020, 09:55:20 pm --- --- Quote from: Fungus on October 03, 2020, 02:13:00 pm --- --- Quote from: David Hess on October 03, 2020, 12:35:13 pm ---Of those, the Tektronix 2235 is the best documented and easiest to repair. The Fluke PM3370A is a lot more complicated because of its digital storage capability and I would not recommend it unless you are prepared to repair and maintain a more complex instrument. --- End quote --- Somebody who's buying their first oscilloscope and trying to save money shouldn't be thinking of repairing or maintaining at all, IMHO. An entry level DSO isn't that expensive. --- End quote --- You have to cut the coat to fit the cloth. If he says that he cannot afford a reasonable new DSO, but can afford a working 2235, then some oscilloscope is better than no oscilloscope. Sometimes one has to make the best of a bad situation, or even take a risk. PurpleAmaranth does not give a location or price, but I would not spend more than $100 for any 2235, and I would not buy any new DSO which cost less than $500. --- End quote --- Precisely. Any working scope is better than none, unless the money could be better spent on other equipment. With skill and imagination you can do a hell of a lot without a scope! --- End quote --- And for what it is worth, a Tektronix 2235 is a fine oscilloscope. My go-to oscilloscope is a 2232 which in analog mode is a 2235 with display readout capability. If it is in running condition, then a Fluke PM3370A should be even better despite having half the bandwidth; 50 MHz is plenty for most applications. But I would be concerned that a PM3370A is more difficult to maintain and repair if necessary. |
| Gandalf_Sr:
I realize I'm 'lucky' to be living in the US but I only paid $285 for my DS1054Z as an open box item that I also got an eevblog discount on. |
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