Products > Test Equipment
Choosing an oscilloscope
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james_s:

--- Quote from: 0culus on October 03, 2020, 02:26:20 am ---
--- Quote from: Fungus on October 03, 2020, 02:17:00 am ---
--- Quote from: george.b on October 03, 2020, 12:03:24 am ---If you can get them for cheap, well, then I say go for it. I think I'd go for the Tek 2235, because, well, it's a Tek, service information about it is plentiful, etc.

--- End quote ---

They'd have to be VERY cheap. Otherwise you'll have something huge and hot that adds $10 or more to your electricity bill each month ... and will likely need fixing.

They're also nowhere near as capable as even a cheap DSO. Would you really go back to a 'scope with no storage?

--- End quote ---

$10 to your electric bill? Where do you live where your electricity prices are that high??? My whole lab might add that a month to mine over not having it, and I've got stuff that uses way more wattage than 2235 will.

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Yeah a 2235 will draw what, 60 watts? I don't know about others here but I probably run my scope for an hour on average on the days that I use it. How often I use it depends very heavily on what projects I'm working on but unless you're running the thing on alkaline D cells I don't see it costing $10 a month. We're not talking huge 1960s Tek boatanchor.
Fungus:

--- Quote from: bdunham7 on October 03, 2020, 02:35:40 am ---The Tek 2235 should also have Z-axis (blanking) input as well, but unless you are doing vector graphics or something unusual, its not something you really need.

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Z-axis is used to control the brightness of the beam, it's essential for making pretty oscilloscope pictures.

(and that's literally the only reason you should be getting a green-screen 'scope these days...)
Fungus:

--- Quote from: james_s on October 03, 2020, 02:41:46 am ---Yeah a 2235 will draw what, 60 watts? I don't know about others here but I probably run my scope for an hour on average on the days that I use it. How often I use it depends very heavily on what projects I'm working on but unless you're running the thing on alkaline D cells I don't see it costing $10 a month. We're not talking huge 1960s Tek boatanchor.

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This needs settling. Does anybody have one and a meter to measure the power use?

nb. Depending on where you live it can either save money on heating bills in the winter or cost you extra money on AC bills in the summer.

Fungus:

--- Quote from: bdunham7 on October 03, 2020, 02:35:40 am ---Here (US) you can get a bottom-of-the-line 50MHz DSO from Siglent, with a warranty, probes and support, for $259.  Depending on what is available to you, another brand might be a better option.

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OTOH you might want more than 2 channels...
george.b:

--- Quote from: Fungus on October 03, 2020, 02:17:00 am ---They'd have to be VERY cheap. Otherwise you'll have something huge and hot that adds $10 or more to your electricity bill each month ... and will likely need fixing.

They're also nowhere near as capable as even a cheap DSO. Would you really go back to a 'scope with no storage?

--- End quote ---

Yeah, I meant cheap as in less than $100, which would be significantly cheaper than a DSO. Obviously, I agree, a DSO is much better, but sometimes an old analog one is all you can get, so I wouldn't brush it off. Took me a while to get my first DSO - they don't come cheap in my corner of the world.
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