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Entry  Mon Apr 15 21:11:49 2019, Philip, Optics, Characterization, OMC(004): PZT testing for spare OMC 
    Reply  Tue Apr 16 11:36:36 2019, Koji, Optics, Characterization, OMC(004): PZT testing for spare OMC 9x
    Reply  Tue Apr 16 21:16:11 2019, Koji, Optics, Characterization, OMC(004): PZT testing for spare OMC 
Message ID: 337     Entry time: Tue Apr 16 11:36:36 2019     In reply to: 336
Author: Koji 
Type: Optics 
Category: Characterization 
Subject: OMC(004): PZT testing for spare OMC 

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)

Attachment 1: IMG_7620.jpg  445 kB  Uploaded Tue Apr 16 12:41:15 2019  | Show | Show all
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Attachment 9: IMG_7634.JPG  275 kB  Uploaded Tue Apr 16 22:19:33 2019  | Show | Show all
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