Products > Test Equipment
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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