Electronics > Beginners
Why are scope probes so damn big?
joeqsmith:
I use some Pomona 6353 micro clips that are similar to what Tautech shows. Even these are fairly large and then you still need to connect your probe to them. Maybe for slow stuff you could get away with it.
I was playing around with a cheap Xilinx eval board and probing was a problem. Not pretty but was just trying to get a feel for the part.
https://www.eevblog.com/forum/microcontrollers/typical-speed-of-fpgas/msg1282290/#msg1282290
I wouldn't mind having a good probe holder but as we continue to move toward BGAs, even that is less useful. They make some really nice ones that would cost more than my scopes.
****
Similar probing on some old 7400 logic....
https://www.eevblog.com/forum/projects/waveforms-in-a-74ls04-ring-oscillator/75/
malagas_on_fire:
I think the probe issue and i might be wrong what i'm about to say, is to use externa test points when developing / prototyping a new board and then skip them as they get passed. This involves to extra cost in building a prototype PCB bigger and then another more compact, but saves time in probing and extra tiny probes. The strandard ones feels confortable in the hands and prevents that tiny coax cable to be mangled so soon.
mikeselectricstuff:
--- Quote from: AndyC_772 on November 08, 2018, 07:55:32 pm ---I miss the Tektronix P6139A probes that I used to have with my old scope. They were 500 MHz bandwidth and much smaller than the clumsy Agilent probes I have now.
--- End quote ---
I've always used P6131's and left whatever came with scopes in their bags. Much smaller & lighter, and thinner, lighter cables.
You can poke the tip into a PCB hole and hang the lead over the desk light , giving enough pressure for contact but not to damage the tip (mostly - they wil bend a few times before snapping)- very handy.
you can also tidy them like this when not in use.
In Vacuo Veritas:
Why isn't there a cheap and cheerful universal articulated probe holder? This will utterly change the world forever. It should be completely and totally trivial to do.
So I won't do it.
KrudyZ:
Tektronix P6562A and P6563A are very small passive probes that can be placed on 0.1" headers.
They sometimes can be had for reasonable prices on ebay (but not at the moment)...
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