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Internal Resistance of Probes & 2206A

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Internal Resistance of Probes & 2206A

Postby tstauffer » Sat Apr 09, 2016 9:36 am

I bought a PicoScope 2206A and liked to measure the inductance of a few coils. To do this properly I need to know the internal resistance of the PicoScope (especially the AWG) itself and the probes (1x and 10x). I was unable to find that information on your homepage. I tried to estimate it myself (with an external resistor) and with this was able to be within ca. 20% for the inductance. But it would be nice if you can provide this values or tell me where to find them.
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Re: Internal Resistance of Probes & 2206A

Postby Gerry » Wed Apr 13, 2016 5:38 pm

Hi tstauffer,

The output resistance of the AWG is a 600Ω, and the input resistance of a channel input is 1MΩ.

A x1 probe has a small resistance of about 50Ω, and a x10 probe has resistance of 9MΩ. When plugged into the oscilloscope the x1 probe has 1MΩ and x10 has 10MΩ

Regards,

Gerry
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Re: Internal Resistance of Probes & 2206A

Postby tstauffer » Thu Apr 14, 2016 9:56 pm

Thanks, this is helpful and fully answers my question.
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