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Best Oscilloscope under $300?

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Aldo22:

--- Quote from: nctnico on February 21, 2024, 01:35:29 pm --- (can Hantek / Owon even do decoding?)

--- End quote ---

Not sure about DSO5102P, but the cheaper DSO2C10 can do decoding (very basic, but for $130....)

Caliaxy:

--- Quote from: Aldo22 on February 21, 2024, 02:01:14 pm ---
--- Quote from: nctnico on February 21, 2024, 01:35:29 pm --- (can Hantek / Owon even do decoding?)

--- End quote ---

Not sure about DSO5102P, but the cheaper DSO2C10 can do decoding (very basic, but for $130....)

--- End quote ---

DSO5102P doesn't.

tggzzz:

--- Quote from: baldurn on February 21, 2024, 12:49:24 pm ---
--- Quote from: tggzzz on February 21, 2024, 11:12:01 am ---Simple equipment allows beginners to concentrate on the fundamentals, and not be distracted by chrome-plated buttons hiding complex subtle functions.

--- End quote ---

It can also be limiting. Say you need to decode a SPI signal from your Arduino - all beginner level stuff. But you took the advice of getting an old boat anchor CRO because simple is better. The skill and imagination needed to find a different solution is something you do not have yet, and it is getting in the way of what you are actually trying to learn right now. Many beginners might just give up.

You also do not want to deal with aliasing and other garbage produced by the instrument itself. This is a real risk if you get the very cheapest digital handheld scopes, with limited bandwidth and sample rates and specs that are lies. The advanced learner may know about these thing and use skill+imagination to work around it. The beginner may become confused and give up.

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I entirely agree about "strange" effects with digitising scopes. They occur even with more capable/reputable equipment but the effects are more subtle. Classic example is using a repetitive sampling mode to look at a digital transition, where the scope insists on drawing a line between successive samples. Misleading doesn't begin to describe it! (Yes HP,/Agilent I'm lookng at you!)

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.

tggzzz:

--- Quote from: nctnico on February 21, 2024, 01:35:29 pm ---The specs may not look stellar on paper but having an instrument which just works as advertised is extremely helpfull (almost priceless). As a beginner you are dealing with enough unknowns as it is.

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Precisely!

Demon Xanth:

--- Quote from: Aldo22 on February 21, 2024, 09:59:40 am ---
--- Quote from: theaustindixon on February 20, 2024, 10:04:00 pm ---(hopefully under $300) ...

* Rigol DHO800
--- End quote ---

If you find a Rigol DHO800 for less than $300, please let me know.

--- End quote ---
Here you go:
https://www.tequipment.net/Rigol/DHO802/Digital-Oscilloscopes/

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