*Question G4B02:
Which of the following is an advantage of an oscilloscope versus a digital voltmeter?*  

*Correct Answer is  D: Complex waveforms can be measured*  

### AI Response: (may contain errors)  

An oscilloscope is a powerful tool for visualizing electrical signals, and it has specific advantages over a digital voltmeter (DVM). Let's break down the question and the choices.

### Correct Answer: D: Complex waveforms can be measured

- **Explanation**: An oscilloscope displays waveforms in real-time, allowing you to see the shape, frequency, amplitude, and other characteristics of complex signals. This is particularly useful for analyzing signals that vary over time, such as audio signals or digital data streams. In contrast, a digital voltmeter typically provides a single measurement of voltage at a point in time, which is not sufficient for analyzing dynamic signals.

### Why the Other Choices are Incorrect:

- **A: An oscilloscope uses less power**  
  - **Explanation**: Generally, oscilloscopes consume more power than digital voltmeters. DVMs are designed for low power consumption, while oscilloscopes require more power to operate their display and processing capabilities.

- **B: Complex impedances can be easily measured**  
  - **Explanation**: While oscilloscopes can help visualize waveforms that relate to impedance, they do not directly measure complex impedances. Specialized equipment, such as an impedance analyzer, is typically used for that purpose. DVMs can measure resistance, but they also do not measure complex impedances directly.

- **C: Greater precision**  
  - **Explanation**: Digital voltmeters are often more precise for measuring static voltage levels, providing high-resolution readings. Oscilloscopes can show more detail in waveforms but may not have the same precision in voltage measurement as a high-quality DVM.

### Summary

- **Oscilloscope**: Best for visualizing and analyzing complex waveforms.
- **Digital Voltmeter**: Best for precise, static voltage measurements.

Understanding these differences will help you choose the right tool for your measurements in amateur radio and electronics.