Products > Test Equipment
Recommendation on selecting a used oscilloscope?
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stj:
dont buy "old" used scopes if you just want to use them.

i am in the prcess of replacing around 80 capacitors in a scope made in 1996
26 of them are SMD and ALL have leaked!
David Hess:

--- Quote from: stj on May 22, 2024, 03:47:20 pm ---dont buy "old" used scopes if you just want to use them.

i am in the prcess of replacing around 80 capacitors in a scope made in 1996
26 of them are SMD and ALL have leaked!
--- End quote ---

You should have bought an older scope.
points2:

--- Quote from: coromonadalix on May 17, 2024, 10:30:34 am ---@nathan as a good resume,
as an hobbyist at home
i tried some old fluke 100Mhz portable scope ....  works but ...
tried the new cheap Hantek 2d15 model. was ok but basic ...
i work with old turd like  TEK 7404 and 7254b, yeah yeah  Windowish  platforms,   if they are well maintained they work, until an hard drive crash or the famous dallas clock dies, if you did not saved the power pc settings   it may take a while to restart them
work with 2s Siglent sds 1000x,   hacked to 200mhz   simple and fun to use
work with a Rigol, hacked too to 200mhz    works fine but like the Siglent a little more,  but with scripting / python .. Siglent is way better
work too with a Picoscope 3406d, practical to say the least,   but man   very very expensive 3400$ CAD  outch
wanted a used Lecroy 1 - 2 ghz  models, but as mentioned,  you're almost out of luck if it break,  some good threads here ... unless you find a clean one and self test passed at a good price ??
oldies like tds 5k or 6k  mmmm  you have to see all the spc tests etc ... before even buying one, same for 7 k series,  but 7k series are biiiiiiig heavyyyyyy bulkyyyyyy
we have evaluated the new Siglent SDS 7k series,  my boss  is hesitating ... but man this scope was  NIX based  and runned darn well for the tests we needed / done. having 27k$$ CAD i would have bought it right away  loll
Agilent  mmmmmm not,   now they don't deal with single individual ...  not new for sure,  maybe some Infinium series ???
in the end  good ol scope depends of your need,   but if you compare modern things with the oldies ... you'll be deceived in some ways,  you have to know your needs for sure,  and know how to deal with them if they break ??
my 2 cents

still some good ol series of tek  tds 7xx series up to 1 gig,  you can do some BW upgrades ...   
tds3k serie,  way overpriced for what they offer, but BW upgradeable too
and now the race between Rigol and Siglent  give us  more for the money   ...    with easy BW  upgrades  cough cough  loll  same for many items, sig gens etc ...

--- End quote ---
well...
I may be wrong but, as I said above :
why bother in testing / having any scopes that perform within the same range of "sample rate" & BW ???

Simple fact : "same range of "sample rate" & BW" => we end up to a question of "taste" vs the interface, simply because the results are equal.
@rt:
I've had used scopes all my life going back to BWD (Australia).
I got a Tek 210 yesterday, for one job, intended for resale, which is exactly why I selected this brand,
and can't believe Tektronix actually has fans. Fans FFS! :D What a dog of a thing.

The knobs fall off, the power button was broken and just sitting in position.
The handle broke off when I got home just from being brittle, and it landed on a tile floor.
It still works, so good job there! Half of the units in the lot I picked from had burned or delaminated screens,
BNC socket of channel A was loose. Opening the unit broke every brittle lug on the bottom of the unit of course.
Then I noticed the fix for the safety recall bends the input PCB. That might also be the DAC and a bunch more stuff.

I was in love with it's appearance, and light weight, and tidiness. I was a Tek head for a couple of hours.



EEVblog:

--- Quote from: Fungus on May 14, 2024, 06:24:02 am ---
--- Quote from: nathankwan on May 14, 2024, 03:10:43 am ---I came here to see if anyone can share some other models that I'm not farmiliar with, like Agilent/Keysight, R&D, Siglent(I don't really like), RIGOL(I don't like either),  YOKOGAWA etc...

--- End quote ---
The new 12-bit Rigols/Siglents are far better than anything you'll find second hand for the same price.

--- End quote ---

I have to 2nd this.
Also take up way less bench space than sold oldie, as much as like them.
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