SIGNAL GENERATORS

Signal Generators

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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!


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