Frequency is controlled by the scaler in T2CON and the value of PR2. The setting I'm using provides for the slowest frequency possible with my OSC speed; PR2 = $FF. The reason I do this the long way is PBP3 will actually toggle PR2 between 2 values to deliver the frequency requested in the HPWM command (HPWM 1,DutyCycle,Frequency). I needed a consistent cycle-to-cycle period timing and couldn't achieve it with HPWM.