Attachment 1: Shadow sensor setup for the PZT displacement test
Attachment 2: PZT endurance test. 4 PZTs were shaken at once.
Attachment 3~5: Function generator setup 100Hz, 3.5Vpp 1.75Voffset (meant be displayed for 50Ohm load)
Attachment 6: The above setting yields 7Vpp unipolar signal @Hi-Z load
Attachment 7: The output was monitored with a 1/10 probe with the PZTs connected. This shows 10Vmax 0Vin -> Good. This photo was taken at 17:35.
Attachment 8: The test is going well @9:15 next day. (t=15.7hours = 5.6Mcycles)
Attachment 9: The test went well. The modulation was stopped @15:35. (t=21hours = 7.6Mcycles)