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| Budget ($150-$400) scope recommendations? |
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| Fungus:
Yeah, don't expect to put in a 400V, 100MHz signal like that other guy did. The 400V rating is at mains AC frequencies. |
| Performa01:
--- Quote from: nctnico on July 08, 2022, 07:38:41 pm --- --- Quote from: Performa01 on July 08, 2022, 06:01:22 pm --- --- Quote from: kissel on July 08, 2022, 05:31:46 pm ---One more question: With my lack of experience, it makes me a little nervous to think of spending $400ish on a scope. How robust/repairable are they? In other words, what are the odds that in the process of learning how to use a scope I accidentally cause expensive or irreparable damage? --- End quote --- Don't worry. You'll hardly be able to damage a Siglent DSO with its 400Vp tolerant inputs, unless you directly feed it with the output of a powerful transmitter. --- End quote --- This is true for any general purpose benchtop oscilloscope! They all survive connecting a 1:1 probe to mains voltages. --- End quote --- Right, that's most likely true. Since I neither know the specs of all the bottom of the barrel budget scopes out there, nor can be bothered to look them all up, I did not want to make a general statement but rather stick to what I know for sure. Especially since the OP seems to be particularly interested in the Siglent SDS1104X-U. Apart from that, folks looking for a cheap solution might also stumble across an USB-instrument, which will usually tolerate only 100 V or even less at its inputs. |
| nctnico:
--- Quote from: Performa01 on July 10, 2022, 08:10:32 am --- --- Quote from: nctnico on July 08, 2022, 07:38:41 pm --- --- Quote from: Performa01 on July 08, 2022, 06:01:22 pm --- --- Quote from: kissel on July 08, 2022, 05:31:46 pm ---One more question: With my lack of experience, it makes me a little nervous to think of spending $400ish on a scope. How robust/repairable are they? In other words, what are the odds that in the process of learning how to use a scope I accidentally cause expensive or irreparable damage? --- End quote --- Don't worry. You'll hardly be able to damage a Siglent DSO with its 400Vp tolerant inputs, unless you directly feed it with the output of a powerful transmitter. --- End quote --- This is true for any general purpose benchtop oscilloscope! They all survive connecting a 1:1 probe to mains voltages. --- End quote --- Right, that's most likely true. Since I neither know the specs of all the bottom of the barrel budget scopes out there, nor can be bothered to look them all up, I did not want to make a general statement but rather stick to what I know for sure. --- End quote --- That way you make it sound like a Siglent commercial -especially considering you have some kind of ongoing interest / relation with Siglent-. |
| 2N3055:
--- Quote from: nctnico on July 08, 2022, 07:38:41 pm --- --- Quote from: Performa01 on July 08, 2022, 06:01:22 pm --- --- Quote from: kissel on July 08, 2022, 05:31:46 pm ---One more question: With my lack of experience, it makes me a little nervous to think of spending $400ish on a scope. How robust/repairable are they? In other words, what are the odds that in the process of learning how to use a scope I accidentally cause expensive or irreparable damage? --- End quote --- Don't worry. You'll hardly be able to damage a Siglent DSO with its 400Vp tolerant inputs, unless you directly feed it with the output of a powerful transmitter. --- End quote --- This is true for any general purpose benchtop oscilloscope! They all survive connecting a 1:1 probe to mains voltages. --- End quote --- Scope 20X times more expensive than SDS1104X-E, the Keysight 3000T series, proudly carries MAX 135V RMS on its front panel, next to inputs... That is a bit less than 200V peak, AC+DC.. So it might be true for many (or maybe most, I don't know, same as Performa I didn't make a thorough research) but it surely is not given to be true for every scope, even expensive ones from brand A manufacturer. If that is important, it should be verified before purchase... |
| Martin72:
--- Quote from: nctnico on July 10, 2022, 09:20:56 am ---That way you make it sound like a Siglent commercial -especially considering you have some kind of ongoing interest / relation with Siglent-. --- End quote --- Can´t see it in his post. Me for example I could tell about the inputs of the rigol 1054, 5000 and the three siglent models I´ve had/actually have, others I don´t know/would have to speculate. That doesn´t make me a person who have commercial interests. |
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