Explain any differences. Repeat these measurements to determine the effect of waveform and the offset voltage on the measured reading. Return the waveform generator to the sine waveform, and repeat the measurements at 1000 Hz. Double-check your results by scope measurement. DC Power Supply Ripple.
Voltage sources are often far from the ideal.
For example, the ideal DC power supply will deliver a voltage that does not vary with time. However, no such supply exists. Measure the ripple using the oscilloscope with AC coupling. Determination of Input and Output Impedances. When AC signals are employed.