HP 33120 function generator output

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winglj

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hp33120

Hi, I have a question about the HP 33120 function generator.

When the output was set to 100mV p-p value in the generator, why the oscilloscope shows that the waveform is 200mV p-p value? Thanks in advance.
 

hp33120 specification

I believe that this problem would not have to happen, can be a problem of the resolution of the oscilloscope.
It can that depends on the load to which these applying the signal, if this is next to a short circuit for example.
You can see the specification in this pdf.
 

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    winglj

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Your HP 33120 is set to 50-ohm output impedance, and your oscilloscope is set to high-impedance.
You can change the HP 33120 mode:
MENU -> SYS_MENU -> OUT_TERM -> 50_OHM or HIGH_Z

That setting doesn't actually change the output impedance. It simply changes the scale factor.
 

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    winglj

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