| Products > Test Equipment |
| I need a better (cheap) probe(holder) for measuring signals on arbitrary devices |
| << < (6/12) > >> |
| Fsck:
--- Quote from: tggzzz on April 12, 2015, 05:07:09 pm --- --- Quote from: PCBGRIP on April 12, 2015, 02:16:15 pm ---At the risk of self promotion, I wanted to share some ideas: ... Basically building a simple PCB that connects pogo pins at your custom spacing location to a standard 0.1" header and you connect your test gear to the header. Custom probing PCBs could be built inexpensively to suit your own needs: --- End quote --- Don't worry about promoting good ideas :) If push-comes-to-shove you can say something about "eating my own dogfood" or "believing in what I promote" :) More seriously, how well does/doesn't it work with scope probes that don't have pogo pins? Ditto, if you can't use a 6" ground lead because of its inductance, and have to use a probe plus its ground spring clip? --- End quote --- depends on your creativity with the set up. it's painfully configurable so your ability to visualize the solution is the only limit to what angles you can probe from. I'm not the most spatially aware so it takes me a bit to get the perfect setup. |
| tggzzz:
--- Quote from: Fsck on April 12, 2015, 06:20:47 pm --- --- Quote from: tggzzz on April 12, 2015, 05:07:09 pm --- --- Quote from: PCBGRIP on April 12, 2015, 02:16:15 pm ---At the risk of self promotion, I wanted to share some ideas: ... Basically building a simple PCB that connects pogo pins at your custom spacing location to a standard 0.1" header and you connect your test gear to the header. Custom probing PCBs could be built inexpensively to suit your own needs: --- End quote --- Don't worry about promoting good ideas :) If push-comes-to-shove you can say something about "eating my own dogfood" or "believing in what I promote" :) More seriously, how well does/doesn't it work with scope probes that don't have pogo pins? Ditto, if you can't use a 6" ground lead because of its inductance, and have to use a probe plus its ground spring clip? --- End quote --- depends on your creativity with the set up. it's painfully configurable so your ability to visualize the solution is the only limit to what angles you can probe from. I'm not the most spatially aware so it takes me a bit to get the perfect setup. --- End quote --- My question is more about whether a non-springloaded probe point (or two!) can be held against a pin/track. Pogo pins are undoubtedly more compliant in that respect. I'm sure I can adequately position the probe in an x-y plane, but the z-plane is more critical. |
| Fsck:
--- Quote from: tggzzz on April 12, 2015, 07:07:18 pm --- --- Quote from: Fsck on April 12, 2015, 06:20:47 pm --- --- Quote from: tggzzz on April 12, 2015, 05:07:09 pm --- --- Quote from: PCBGRIP on April 12, 2015, 02:16:15 pm ---At the risk of self promotion, I wanted to share some ideas: ... Basically building a simple PCB that connects pogo pins at your custom spacing location to a standard 0.1" header and you connect your test gear to the header. Custom probing PCBs could be built inexpensively to suit your own needs: --- End quote --- Don't worry about promoting good ideas :) If push-comes-to-shove you can say something about "eating my own dogfood" or "believing in what I promote" :) More seriously, how well does/doesn't it work with scope probes that don't have pogo pins? Ditto, if you can't use a 6" ground lead because of its inductance, and have to use a probe plus its ground spring clip? --- End quote --- depends on your creativity with the set up. it's painfully configurable so your ability to visualize the solution is the only limit to what angles you can probe from. I'm not the most spatially aware so it takes me a bit to get the perfect setup. --- End quote --- My question is more about whether a non-springloaded probe point (or two!) can be held against a pin/track. Pogo pins are undoubtedly more compliant in that respect. I'm sure I can adequately position the probe in an x-y plane, but the z-plane is more critical. --- End quote --- x-y is idiotproof, but getting the critical amount of z-axis stability is your problem. in general it's quite difficult to get it perfectly stable for me. I guess the question is how stable do you need it to be? I can get my probing set up, but if you bump it, you'll need to restart. |
| tggzzz:
--- Quote from: Fsck on April 12, 2015, 07:31:13 pm --- x-y is idiotproof, but getting the critical amount of z-axis stability is your problem. in general it's quite difficult to get it perfectly stable for me. I guess the question is how stable do you need it to be? I can get my probing set up, but if you bump it, you'll need to restart. --- End quote --- Drat. But I'm not surprised. I'm still looking for something better than --- End quote --- or http://www.edn.com/ContentEETimes/Images/00PCB/cclad1f3.jpg |
| Fsck:
I get solid, stable readings when I have it set up. |
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