Products > Test Equipment
Oscilloscope Dilemma
Fungus:
--- Quote from: JOFlaherty on December 05, 2022, 12:58:36 am ---With a modern digital scope, you get an accurate frequency counter and time interval meter built in, and on-screen display of time and voltage values without having to count divisions on the screen.
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And FFT to see the signal in the frequency domain - very useful for radio work.
markone:
--- Quote from: nctnico on December 04, 2022, 10:22:00 pm ---Not quite true. Tektronix' TDS210 / TDS220 where real game changers that put 1Gs/s realtime sampling scopes on the desk of electronics engineers as a true replacement of analog oscilloscopes.
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Game Boy, this is the name that we gave to those scopes in the lab at the time, the awfullest screen ever seen in my whole life :)
--- Quote from: nctnico on December 04, 2022, 10:22:00 pm ---And designed to a low price point as well. The whole board is like the size of 2 credit cards. I have not seen any of the low cost Chinese brands achieve such high levels of integration.
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For the simple fact that it was over engineering, two credit cards inside a much bigger case, no need to make use of aerospace tech for a bench scope.
China world is still in learning phase, i.e. Rigol has already developed several Asics, i would expect Siglent to do the same soon or later and i can see lot of chip designer / maker take life in the far east, not to mention the "queue" outside the TSMC door ...
My Lab is almost equipped with instrumentation from Rigol (DS1054Z and soon HDO1074), Siglent (SDG2042X & SSA3021X), GW Instek (GDS-2072E), if you ask me would say thanks God, China came in this sector otherwise things would have been a lot different, with some rusty & smelly anchor boat on the desk.
--- Quote from: nctnico on December 04, 2022, 10:22:00 pm ---Agreed. Tektronix still knows how to make good oscilloscopes. And they are not the only ones who have been milking old architectures.
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They are still milking, it's enough to see how many active 8bit DSO they do have (shamlessy) in catalog with 20kpts @ over 1K USD/EURO.
rstofer:
I have an old Tektronix 485 (350 MHz) dual channel scope and it works well. You can sometimes find them on eBay for a couple of hundred bucks. I did...
OTOH, even though it has a lot more BW than my unlocked Rigol DS1054Z, it is retired. There is simply nothing about an old analog that can compete with a DSO. Measurements, decoding, triggering, FFT (in some cases), Bode' Diagrams (in some cases) and so on.
I bought the Rigol because the Siglent wasn't available. Today I would buy the Siglent SDS1104X-E, unlock it to 200 MHz and call it a day. I need 4 channels more than I need BW.
Really, you're into analysis paralysis and it can last forever so I'll give you a hint:
Buy the Siglent SDS1202X-E for $399 and call it even. You will be happy you did!
https://siglentna.com/digital-oscilloscopes/sds1000x-e-series-super-phosphor-oscilloscopes/
That's a heck of a price for a very nice scope. Download the User Manual and see what you will get!
Skip the X-U series, they have been designed down to a price point.
That said, I don't know how you plan to see much of a 400 MHz signal on a 200 MHz scope but I suppose something will show up on the screen. I don't dabble in RF so I have no idea how it will turn out.
nctnico:
--- Quote from: markone on December 05, 2022, 01:47:24 am ---My Lab is almost equipped with instrumentation from Rigol (DS1054Z and soon HDO1074), Siglent (SDG2042X & SSA3021X), GW Instek (GDS-2072E), if you ask me would say thanks God, China came in this sector otherwise things would have been a lot different, with some rusty & smelly anchor boat on the desk.
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Not really. There where quite a number of people (including me) and companies working on low cost oscilloscopes before the Chinese came in and undercut those people / companies. Either way we would have had lower cost test equipment without the Chinese. Take the Welec W2000A as an example (that never got finished).
themadhippy:
--- Quote ---Skip the X-U series, they have been designed down to a price point.
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for the price its still a very capable scope,for some of us the budget is very limited.
--- Quote ---There is simply nothing about an old analog that can compete with a DSO.
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my old analogue scope displayed x/y artwork much better than my new digital one
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