Input Impedance - High or Low Resistance?

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SUMMARY

An input impedance of 1MΩ for a voltage probe is considered standard for oscilloscopes, with typical "10X" probes having an impedance of 10MΩ. The discussion clarifies that 1MΩ is a common value, indicating it is generally regarded as high resistance in the context of voltage probes. Additionally, low impedance probes are available for high-frequency signals, which are defined in the linked Wikipedia article.

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physicsalex
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I am working on a physics lab and wonder if an input impendece of +/-10V input 1M (for a voltage probe) is high resistance or low resistance.

Can anyone help?
Thanks!
 
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physicsalex,

http://en.wikipedia.org/wiki/Test_probe

A 1M probe is fairly "standard" as far as oscilloscopes go. A "10X" probe typically is 10M. There are also "Low Impedance Probes" for high frequency signals. The above article will define them for you, but, in general, 1M is the most common.

Fish
 

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