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| Best Oscilloscope under $300? |
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| Aldo22:
--- Quote from: Demon Xanth on February 21, 2024, 05:01:42 pm ---Here you go: https://www.tequipment.net/Rigol/DHO802/Digital-Oscilloscopes/ --- End quote --- Yes, that looks good. Unfortunately not for me... :palm: |
| Demon Xanth:
That shipping price is a "please don't" price. :-[ |
| baldurn:
--- Quote from: tggzzz on February 21, 2024, 04:47:32 pm ---I wonder how we managed with digital signals before digitising scopes were available? Oh yes, we made the stimulus repeatable (always and still a good idea for many many reasons!) or used a analogue storage scope (horrible things :) !) Where that isn't possible, use a scope to look at the analogue waveforms to ensure they will be correctly interpreted as digital signals (i.e. signal integrity). Then, for digital signals, flip to the digital domain with very inexpensive logic analysers or use a protocol analyser such as a bus pirate. --- End quote --- I am not saying that it is a problem to work with the old tech. But unless your interest lies specifically in learning how things was done in the past, I am arguing that the beginner is better of using a modern entry level DSO from a reputable vendor (and specifically the Rigol DHO800 or Siglent SDS800X HD). Those instruments are not perfect, but good enough to avoid most surprises and with a good range of features. It is something you will be able to keep for many years before possibly outgrowing the instrument. Older A brand instruments may also be good options. The problem is that the beginner has no way to know if he is getting a good deal or not. There is a lot of overpriced and outdated stuff out there. I am advising against going too cheap. The new stuff that is significantly cheaper than the before mentioned Rigol and Siglent is often "too cheap". If you are on a budget and need to make ends meet, I would say you need to go the used route. Yes that might even include an old CRO, because any instruments is better than no instrument. |
| ebastler:
I recommend that you look for a 4-channel scope. Much more flexible than two channels; among other things they are capable of looking at (and decoding!) serial buses like SPI, with clock, data, enable, command/data lines. With the recent or upcoming launch of new 12-bit entry-level scopes (Rigol DHO800 and Siglent SDS800X HD series), I would expect that the previous generation of 8-bit entry-level models increasingly show up on the used market. That would be the Rigol DS1xx4Z and the Siglent SDS1xx4X-E. They currently start at around $400 new, hence should become available for $300 or less used. I would prefer either of these over the other "used" models you have looked at. |
| Smepic:
Rigol DS1054Z is 299€ on https://eleshop.eu/catalog/product/view/id/625/s/rigol-ds1054z/category/82/ It is quite reliable, or at least its bugs are well known. |
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