Output Voltage Not What You Expect?
Most signal generators have a “Load Impedance” setting. Whilst the signal generator almost always has an output of
\(50\Omega\), the signal generator will take this load impedance setting into account and generate a voltage that will result in the set peak-to-peak/amplitude at the output.
However, if this load impedance setting is set to say, 50R, but connected to a high-impedance load (for example, connected straight up to the oscilloscope), you will measure twice the expected voltage at the output!