The Shop > Electronics & IC Programing
How do you terminate your coax to BNC?
PekkaNF:
Three pictures of ebay stuf...
Bought some cheap terminators and found one not working. Maybe someone failed to make connection? Those were not cheapest. Pretty sure you can't give them 10Vpp signal.
Needed those BNC/screw terminals to test twisted pair cable (termination) and stuff. Nicer to build test stuff with a screw driver than trying to solder wires into BNC body.
eskoilola:
Oh.
In case You are concerned about the wear of the oscilloscope connectors - make a short adapter that then takes the wear. At least that is what I do. BNC connectors are the easy ones. I have a N-connector in my Rohde&Schwartz RF generator. That connector is not intended to be regularly plugged in/out. So there is an adapter with a (do NOT laugh) 6mm audio jack.
In the scope I usually have the probes connected and I seldomly remove them. Old and trusty Tektronix stuff.
PekkaNF:
One more thing...
I need a small fixture that has male BNC at the other end and female at the other end.
I see those two in US at the same price than one in EU. 20€ for one is just about pricey, but palatable. 40€/£ a piece not.
Any other choses? Or that is the ongoing rate for decent one?
I would not mind of constructing one, but male panel mounted BNC:s does not seem that common.
I am about to buy 5 panel mounted BNC connectors each gender, but very little credible specks on ebay products.
Pekka
Roger B:
If you are looking for some quality connectors try these people:
https://www.distrelec.ch/en/connectors/rf-coaxial-connectors/rf-connectors/c/cat-DNAV_PL_041004?q=*&sort=Manufacturer%3Adesc&filter_Series=BNC&filter_Category3=RF+Connectors&filter_Buyable=1&filter_Manufacturer=Huber%2BSuhner
There are a selection of the top manufactures there at reasonable prices.
PekkaNF:
A little followup!
Roger, I just had ordered from that comppany some connectors and small stuff. Funny that I did not notice that connecor though.
I got some connectors and stuff for my previous projects.
Lately I have been making some low quality contraptions and all sorts of ebay specials have been dripping trough. There are some feed-tough terminator/filtering/impedance maching circuits I have tried out and alhough they work out ok when soldered trough terminals, some DIY solution that will be mechanically sound for test/measurement use has a little appeal.
Found some really nice and professional products.
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_ID=8681
I have some connectors and strip/dot prototype PCB boards, but they don't seem to mach BNC/SMA solder connections, as nicely as these:
https://www.pulseresearchlab.com/collections/signal-conditioning-kits
That page has a nice coockbook on attenuators
https://cdn.shopify.com/s/files/1/0355/3849/files/AttenuatorAppNote_f7228dae-43d6-4e97-8e53-79a152d308ca.pdf?13945134751436219249
Almost bought few of these to play with, but I actually would need only some proper small circuit boards that would mount the connectors.
https://www.ebay.com/itm/PC-Oscilloscope-Accessories-Coaxial-Attenuator-400V-2-BNC-M-F-Connector/172922559823?epid=659280964&hash=item2842fcdd4f:g:ai4AAMXQBNlRh1cR
But they look like bit friable to prototyping.
Q: Any recommendation for low cost readymade PCB that would easily accept BNC/SMA PCB solder connectors. OR BNC/SMA connectors that are short and have standard pin spacing AND means to attach them mecanically.
Suggestions?
Pekka
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