Abstract: Methods and apparatus are provided for testing an acoustic device that has multiple transducing elements adapted for conversion between acoustic and electrical signals. An electrical transmission signal is generated. The electrical transmission signal is transmitted to a selected transducing element. An electrical received signal is received from the acoustic device. A reference signal is generated. A capacitance associated with the selected transducing element is determined from the reference signal. Operational characteristics of the selected transducing element are diagnosed from the determined capacitance and the electrical received signal.

Abstract: Methods and systems are disclosed for providing a self contained hydrophone for measuring characteristics of HIFU fields. HIFU field characteristics are measured using transducer elements receiving reflected and or scattered HIFU fields scattered from an integrated scattering device and providing for use of more responsive piezoelectric materials. The transducer element and/or elements are configured in the integrated hydrophone to provide for in-phase reception of HIFU waves scattered from the scattering device. A positioning mechanism may be used that with the use of the transducer element and/or transducer elements as pulse-echo devices may provide for tuning of the integrated HIFU hydrophone. Further, the integrated structure of the hydrophone may be sealed to provide for use of cavitation mitigating liquids.

Abstract: Methods and apparatus are provided for testing an acoustic device that has multiple transducing elements adapted for conversion between acoustic and electrical signals. An electrical transmission signal is generated. The electrical transmission signal is transmitted to one of a first set of channels through a relay element in accordance with a state of the relay element. The electrical transmission signal is transmitted to one of a second set of channels through a multichannel switch of an adapter in accordance with a state of the multichannel switch. The electrical transmission signal is transmitted to a selected transducing element. An electrical received signal is received from the acoustic device in response to the electrical transmission signal.

Abstract: Methods and apparatus are provided for testing an acoustic device that has multiple transducing elements adapted for conversion between acoustic and electrical signals. An electrical transmission signal is generated. The electrical transmission signal is transmitted to one of a first set of channels through a relay element in accordance with a state of the relay element. The electrical transmission signal is transmitted to one of a second set of channels through a multichannel switch of an adapter in accordance with a state of the multichannel switch. The electrical transmission signal is transmitted to a selected transducing element. An electrical received signal is received from the acoustic device in response to the electrical transmission signal.