Which measurement provides a comparison free of bandwidth errors?

The measurement that provides a comparison free of bandwidth errors is the one associated with constant power per hertz. This method effectively normalizes signal power across different bandwidths, allowing for a fair comparison regardless of the bandwidth used during signal transmission or reception.

By focusing on power per hertz, this approach eliminates the discrepancies that may arise due to varying bandwidths in transmitting signals. This ensures that the analysis is structured around a consistent metric, enabling accurate evaluation and comparisons of signal strength and performance across different media and formats.

In contrast, other measurement methods, like peak amplitude or average signal level, do not account for the effects that bandwidth can have on the interpretation of signal strength, making them less reliable for assessing performance in a bandwidth-agnostic manner. Similarly, bandwidth utilization rate involves considerations based on how effectively a specific bandwidth is being used, which can introduce additional variables that may skew comparisons.