oscilloscope reading

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bakul1

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Hello ,
What is the reason that we see double peak to peak value in oscilloscope than the input.
When I give 1V peak -peak sine from signal generator ,why on any oscilloscope we see 2V p-p value?

Thank you
 

Your signal generator has a 50Ω output impedance and your scope a 1MΩ input impedance. This is the reason. If you add a 50Ω termination on your scope, it will read correct. Some more expensive scopes can be switched to 50Ω input.
 
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    bakul1

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E-design said:
Your signal generator has a 50Ω output impedance and your scope a 1MΩ input impedance. This is the reason. If you add a 50Ω termination on your scope, it will read correct. Some more expensive scopes can be switched to 50Ω input.
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thanks a lot..
 

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