Final answer:
The number of pulses delivered per second in pulsed PSWD is defined as the pulse rate. This parameter is measured in pulses per second (pps) and is not to be confused with pulse width, pulse period, or average power.
Step-by-step explanation:
The pulsed PSWD (Pulsed Short Wave Diathermy) parameter defined by the number of pulses delivered per second is known as pulse rate. This is a measure of how frequently the pulses are being emitted over one second and is typically measured in pulses per second (pps). This is distinct from both pulse width, which refers to the duration of each pulse, and pulse period, which represents the time from the start of one pulse to the start of the next. Average power refers to the total energy delivered over a specific time period and is a different parameter altogether. In practical units, pulse rate can also be referenced in terms of frequency, like Hertz (Hz), where 1 Hz is equivalent to 1 pps.