Products > Test Equipment
Choosing an oscilloscope
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Fungus:
Here's an example of a repair:



Note the amount of components inside, tools needed (including other oscilloscope), etc.
BravoV:

--- Quote from: 0culus on October 07, 2020, 10:14:37 pm ---
--- Quote from: BravoV on October 07, 2020, 06:09:30 am ---
And no, you can NOT do that even at the best analog scope ever made on earth.


--- End quote ---

Yeah, no. Oscilloscope photography was pretty highly developed back in "the day". HP and Tek catalogs had entire sections devoted to cameras and accessories, as well as application notes on the matter. Now would you choose to do this today if you had other options? No, of course not, but let's not pretend that using a 'scope for single shot is some kind of 21st century invention.

That said it might be a fun project to get an old scope camera and retrofit it with a digital camera.  >:D tgzzzz will love that.  :-DD

--- End quote ---

Like this ?  >:D This is my setup.



And the result ...


But c'mon guys ...  :palm:
David Hess:

--- Quote from: rstofer on October 06, 2020, 10:15:27 pm ---The modern DSO is in an entirely different class in terms of capability.  Single shot mode alone is worth waiting to buy the DSO.  The number of measurements a modern DSO can do is staggering.  They're on a completely different planet.
--- End quote ---

I agree; that is why I bought a 30+ year old Tektronix 2232. :) (1)


--- Quote from: BravoV on October 07, 2020, 06:43:38 am ---Here below photo of my Rigol DS1104Z (which has the exact identical physical with DS1054Z) stands on top of my Tektronix 2465B analog (which many considered the best portable analog scope ever made, cmiiw).
--- End quote ---

What is not shown in your photograph is that the Tektronix DSOs of that age with that same size CRT have a higher resolution and DPI than a Rigol DS1104Z.  800 x 480?  Please.  They also produce 16 bit results to take advantage of it.  Tektronix was selling "retina" displays more than 2 decades before Apple.

(1) I am not recommending that anybody buy an old DSO instead of a new one, which I have done several times now, unless they know what they are getting into.
SilverSolder:

It's interesting, whenever young people visit my "man cave" / electronics den the first time, they are often completely awestruck by green CRTs, orange plasma displays, large amounts of twirly buttons and dials, and so on...  and totally ignore any modern LCD displays that happen to be on...  things can go full circle, getting so old they become cool again!   (Hoping for it to happen to me now!)  :D




rf-loop:

--- Quote from: BravoV on October 08, 2020, 02:06:28 am ---
--- Quote from: 0culus on October 07, 2020, 10:14:37 pm ---
--- Quote from: BravoV on October 07, 2020, 06:09:30 am ---
And no, you can NOT do that even at the best analog scope ever made on earth.


--- End quote ---

Yeah, no. Oscilloscope photography was pretty highly developed back in "the day". HP and Tek catalogs had entire sections devoted to cameras and accessories, as well as application notes on the matter. Now would you choose to do this today if you had other options? No, of course not, but let's not pretend that using a 'scope for single shot is some kind of 21st century invention.

That said it might be a fun project to get an old scope camera and retrofit it with a digital camera.  >:D tgzzzz will love that.  :-DD

--- End quote ---

Like this ?  >:D This is my setup.



And the result ...


But c'mon guys ...  :palm:

--- End quote ---

But is it so that your setup is missing something what we also have in old times for single shots.

And I do not mean memory CRT. Memory CRT problem is that even fastest have quite slow drawing speed (and if everyone in lab use these, mostly some o0f them then destroy this tube due to total lack of knowledge how to use these. Same with micro channel tubes).

But what important is missing in your image or least I do not see it.

Camera "trigger". Camera need be sync  with scope trace draw if want capture single shots. Many Tek and HP scopes have this feature. Also some times fast writing CRT with some very fast phosphor.

But yes, nice image, perhaps technically back light level bit too high, it is masking too much some rising edges...  (but if think just art... perhaps ok)


These Tek scopes have very nice CRT because its surface is flat and  back lighted # is deeply inside CRT surface, near phosphor so not high parallax error.

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