Electronics > Beginners

O-scope probe to BNC adaptor (Dave uses one in #642) - where to find/buy?

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Electro Fan:

--- Quote from: Mechatrommer on February 26, 2019, 01:49:33 pm ---i measured my rigol probe and lecroy ap020 outer ring tip = ~4.5mm so i guess its 5mm version. the lecroy ap020 bnc adapter fit in the rigol probe...
https://www.ebay.com/itm/Cal-Test-Electronics-CT2708-Oscilloscope-Probe-5mm-BNC-Adapter-Pack-of-10/254140060902?hash=item3b2bed94e6:g:2xMAAOSw95dcdDKD:rk:13:pf:0
--- End quote ---

The pack of 10 for $94 looks like the same item you can buy in Qty 1 at Digi-Key for $3.50 + tax and shipping.

ac8vk:

Update: I have ordered both types of Cal Tec probe adapters. I'll post in a few days with info on which ones fit my Rigol or other probes...

If this doesn't work... It looks like probes that come with proper adapters are available at reasonable prices. If the adapters don't cut it, I'll purchase a pair of probes with the BNCs!

Thanks again - Your help is greatly appreciated it.
Erik

beanflying:
Meant to post the beginnings of my Homebrew version when this thread popped up. Suits Micsig 100 Mhz probes and evilbay nasty ones as shown and will suit most with 5mm diameter Ground Barrels.

The 6mm knurl nut will be sweated to the BNC-SMA adapter with a custom spring wound and soldered to that (similar to the stock ground one). Small custom 3D printed barrel then added (by heat) over the whole lot for proper probe/spring support.

Should be more secure than the commercially available ones as it will contain more of the probe barrel. No money to be saved but I like to make stuff  ;)

ac8vk:
That is a neat trick.

ac8vk:

EEVBlog Forum:

Thanks for all the great comments! This is really a fantastic area for getting-started questions!

Via the magic of free shipping from ARROW... I have results:

1. The 5mm version fit my Hantek 2X 200MHz (PP 200) probes snug enough to not fall off or pull off during use.
2. The 5mm were "workable" with the RIGO probes but not snug enough to stay on by themselves.

Lessons learned:

1. Scope probes with these (and other) assessors don't have to break the bank. Now that I know what to look for it, seems that for a slight premium I can just buy probes with these - so I think that will influence my probe buying.

2.  At under $4 unit one, it's worth trying a few sizes on your existing probes. (I have a matched pari of the Hantek's - so for an $8 upgrade I now have a nice option that defers probe purchase).

3. The springs do work - but not hands free...

Thanks again for all your insights!
Erik

73 AC8VK

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