The PERIOD and FREQUENCY (PRF) buttons are interactive. Changing one of these parameters will change the other. Edit the current value using the cursor control keys, rotary data knob, or enter a new value using the keypad and the appropriate terminator key. The frequency (PRF) range is 0.6 Hz to 25,000,000 Hz.

Press PERIOD to set the pulse period of the internal pulse generator to the value entered. Selecting Pulse Period represents the pulse period as time. The pulse period range is determined by the pulse generator clock rate. The period range is 1e-07 s to 42 s.