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Forum CT3679 Twin Lead Adapter, Probe Compatibility
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  • oscilloscope probe
  • oscilloscope
  • workbench wednesdays
Related

CT3679 Twin Lead Adapter, Probe Compatibility

baldengineer
baldengineer over 2 years ago

The CT3679 Twin Lead adapter converts a 5 mm oscilloscope probe to a two-socket connection. You can either connect those sockets to header pins or use the included SMD grabbers to connect to small leads. While they obviously work well with Cal Test's own probes, they may also work with other 5 mm scope probes. But, as you can see in this Workbench Wednesdays Video, not all of them!

Compatible Probes

  • Multicomp Pro OW3200
  • Rigol RP2200

Not Compatible Probes

  • Rigol P6060
  • R&S RT-ZI10C Isolated Passive Probe
  • YPioneer P4100 100X High Voltage Probe

Obviously, this is not a comprehensive list. These are just the 5mm probes I have in my lab. Post your experience with the CT3679 below.

Purchasing

I recommend having at least one of Cal Test's probes since they fit well together. I recommend the CT3133RA. It's a 350 MHz probe. My testing shows you really only get about 90-100 MHz out of the adapters before they start ringing.

Remember, the "RA" at the end means the probe has the pin to indicate to the oscilloscope it is a 10-to-1 probe.

The CT3679 Twin Lead adapter is also available in the CT3288ARA  kit.

Its part number ends in "ARA."
The first A means it includes additional accessories like the twin lead adapter.

Video

If you haven't watched it yet, there's a full video on the twin lead adapter, watch it here.

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Top Replies

  • shabaz
    shabaz over 2 years ago +4
    Interesting item! I had a similar need for the R&S probes, and by chance noticed that they fit 2.5mm audio sockets. It's not a brilliant solution (and for sure there's a risk of tip breakage, but I've…
  • baldengineer
    baldengineer over 2 years ago in reply to shabaz +1
    adds item to todo list ...
  • shabaz
    shabaz over 2 years ago

    Interesting item!

    I had a similar need for the R&S probes, and by chance noticed that they fit 2.5mm audio sockets. It's not a brilliant solution (and for sure there's a risk of tip breakage, but I've not noticed any sideways bending of the tip so far). The official kit for the probes is more than I wanted to pay for now. I might try to come up with a better solution at some point, but may just adapt the DIY solderable probes to a version with pin sockets (again non-ideal compared to the proper kit!).

    image

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  • baldengineer
    baldengineer over 2 years ago in reply to shabaz

    adds item to todo list ...

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