What is the definition of duty cycle during the averaging time for RF exposure?

The correct definition of duty cycle during the averaging time for RF exposure is the percentage of time that a transmitter is actively transmitting. This is critical in assessing RF exposure because it determines the proportion of time during which power is being radiated into the environment. A higher duty cycle indicates that the transmitter is on more frequently, which can lead to higher cumulative exposure levels for individuals nearby.

Understanding duty cycle is important for compliance with safety regulations and guidelines regarding RF exposure. It helps evaluate the potential risks associated with RF energy over a specified averaging period. In contrast, the other options may mention aspects related to power output and differences between types of power measurements but do not accurately reflect the duty cycle's definition.