Products > Test Equipment

Can You Do Component Testing On Digital Oscilloscopes?

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Darkover:

> My question is do digital oscilloscopes have this ability?

Yes, there are a few from Hameg/RS (HMO2022 for example)

in case you don't have it, you can build it yourself. I did it:

https://www.mikrocontroller.net/topic/528893#new

Discussion is in German, but schematic and picture is readable.  ;)

Olaf

Wallace Gasiewicz:
I have a BK  transistor curve tester, It works very well on my analog scopes. You do not need a high end analog  scope for a curve tracer to work. I think any analog scope will work. I even had one that just had X and Y inputs and NO time base. That should work also.

When I put it on my Agilent 54820, the result is barely readable. You can see the traces but they are in a mess of other stuff I don't know if this is due to "aliasing'.  The retracing is horrible to look at.
ff you are used to curve tracers you can pick out the curves of interest, but i find them unusable.

However the 54820 does make a very nice XY trace using sine or square inputs. Nice circle with proper sine input, pretty colors too. So maybe testing things that would generate a stable repeatable scope input would be displayed better. I did read the article posted by Mark, that article deals with tests that can be done WITHOUT using XY mode. Nice post.
Transistor curve tracers produce an output that includes about 5 different traces. So there are two different changing signals going into the scope. And then the scale jumps ranges Maybe if I were to modify the curve tracer so I would only see one curve at a time the 54820 would display it in a readable pattern. I did post my efforts on the same thread that wasedadoc mentioned.If I had the room I would just set up the curve tracer with one of my old scopes and use it as a dedicated curve terser.

Darkover:

> It works very well on my analog scopes.

I don't think you need an analog scope. My RTB ist very digital.


Olaf

wasedadoc:

--- Quote from: Wallace Gasiewicz on April 19, 2023, 12:54:17 pm ---When I put it on my Agilent 54820, the result is barely readable. You can see the traces but they are in a mess of other stuff I don't know if this is due to "aliasing'.  The retracing is horrible to look at.

--- End quote ---
Absolutely nothing to do with aliasing.

Wallace Gasiewicz:
Olaf:Your trace is not quite applicable to the traces you get with a curve tracerThe inputs to the scope are very different.
My comments were to the compatibility of a curve tracer to a digital scope. Other devices can be measured nicely, as you have demonstrated.

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