Electronics > Beginners
Do it yourself 50 ohm BNC to alligator clip cable for function generator
<< < (5/5)
tggzzz:

--- Quote from: robsims on July 11, 2019, 02:55:16 am ---My scope has 2 cables, for the two outputs. Can i use one of the scope cables, because i think the scope cables are of higher quality? If not, than i will make the cable for the function generator myself. I will use the 50 ohm coax cable, with the BNC connector. I will make sure the cables to the alligator clips will be short.

--- End quote ---

You need to understand the basic theory and practice of different types of scope probes. I suggest you have a look at the links at https://entertaininghacks.wordpress.com/library-2/scope-probe-reference-material/

I also recommend you have a look at some of those safety links, so that you don't accidentally cause loud noises and clouds of smoke.
bsfeechannel:
There is a nice tutorial embedded in the video below on how to solder alligator clip leads to coaxial cable.



It starts at 22min and goes up to 30min.
robsims:
Very informative vid . Nice to see how to attach alligator clips the proper way.
Gyro:

--- Quote from: robsims on July 10, 2019, 09:13:10 pm ---The generator is a siglent SDG 810. Max frequency is 10 mhz and max voltage is 20 volt pp. So i want to be able to do tests at max frequency and voltage

--- End quote ---

If you want to preserve maximum signal integrity at the top end of the frequency range (say, a 10MHz squarewave), then it's useful to buy or make a BNC to BNC lead too and buy a BNC socket with a ground solder tag.

Tack the socket onto the edge of your PCB prototype or whatever with the solder tag and solder a 50 ohm resistor (47 or 51 will do) between the centre pin and the tag. You can the take the signal straight to the input point of your circuit using a very short wire.

As others have mentioned, you won't get the full 20V p-p at 50 ohms (the resistor would fry for one thing) but you will get the cleanest possible high frequency signal.

Having both lead options will cover you for all practical circumstances.

You can also hook your scope probe to the resistor leads if you just want to look at the signal.
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod