#$%^&*AU2015201749A120150430.pdf#####Documentl-8/04/2015 ABSTRACT A system for performing an ocular surgical procedure is provided. The system includes a multiple frequency signal source, a configurable tuned output filter connected to the multiple frequency signal source and a multiple frequency ultrasonic handpiece. The multiple frequency signal source operates at a first frequency. The multiple frequency signal source is configured to drive the configurable filter and the multiple frequency ultrasonic handpiece at the first frequency, the signal source operating at a second frequency is configured to drive the configurable filter and the multiple frequency ultrasonic handpiece at the second frequency, and the configurable filter is configured to address third harmonic and/or higher frequency issues for the multiple frequency ultrasonic handpiece. Fig. 2
