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Products => Test Equipment => Topic started by: cvanc on September 30, 2021, 02:44:37 pm

Title: Product search: Is there such a thing as a scope probe-to-BNC analog converter?
Post by: cvanc on September 30, 2021, 02:44:37 pm
Hi all-

I would like to use oscilloscope probes as the input to audio analysis gear.  I'm looking for something that will properly terminate scope probes (including overload protection hopefully), and output BNC analog.

Does such a box exist?  My Google-fu is failing to find even one such device.  Thanks!
Title: Re: Product search: Is there such a thing as a scope probe-to-BNC analog converter?
Post by: Yansi on September 30, 2021, 02:46:27 pm
Well, for audio frequencies, just slap there a FET buffer opamp, done* :)


*I know it may not be that easy, but we did not get too much details what are you trying to do with this.
Title: Re: Product search: Is there such a thing as a scope probe-to-BNC analog converter?
Post by: tszaboo on September 30, 2021, 02:53:45 pm
Sure, this thing:
https://www.newark.com/keysight-technologies/5081-7705/test-probe/dp/02P5581
 (https://www.newark.com/keysight-technologies/5081-7705/test-probe/dp/02P5581)This one is not in stock, but im sure you find it somewhere else.
Also, KS scopes come with them default.
Title: Re: Product search: Is there such a thing as a scope probe-to-BNC analog converter?
Post by: edavid on September 30, 2021, 02:58:35 pm
Quote from: cvanc on September 30, 2021, 02:44:37 pm
I would like to use oscilloscope probes as the input to audio analysis gear.  I'm looking for something that will properly terminate scope probes (including overload protection hopefully), and output BNC analog.

Does such a box exist?  My Google-fu is failing to find even one such device.  Thanks!

Sort of!  They are usually called differential probes, and of course they have the probe built in.  In the vintage world, you could also use a differential preamp like the Tek AM502 (or ADA400 if you got lucky) or a FET probe like the P6202 to do the job.

The problem you might run into is that most oscilloscope accessories are not specified for THD, so you would have to measure that yourself.