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My Multisim Oscilloscope is ALWAYS doubling my input voltage.

If I put a 5Vp in from the function generator, it will show a sine wave with a 10Vp in the scope.

This is extremely frustrating and I would appreciate any help. Here is a screenshot:

This is the scope showing 5V/div - you can see it reaching two division, i.e. 10Vp

Figure 1: This is the scope showing 5V/div - you can see it reaching two division, i.e. 10Vp

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    \$\begingroup\$ Try connecting to COM of signal generator instead of - \$\endgroup\$ – Simon Sultana Dec 4 '20 at 2:39
  • \$\begingroup\$ Does Multisim model the output impedance of the signal generator and input impedance of the oscilloscope? \$\endgroup\$ – Sredni Vashtar Dec 4 '20 at 3:47
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Connection to function generator should be to COM (common/ground) instead of negative. Also add a ground point for good practice. Try that.

'-' connection is used for phase inversion

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  • \$\begingroup\$ Many thanks, that solved it! \$\endgroup\$ – Adrian Salt Dec 4 '20 at 15:45

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