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History change record, Piezo ceramic element, Change items – BeStar FT-20T-4.3A1 User Manual

Page 8: Version no, Date drawn, Approved

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DRG NO: BS/TEY01.256B

A

6

Rev.

5

Date

Drawn

www.be-star.com [email protected]

4

Note

Approved by:

3

张秀琴

08/06/16

B

赵 峥

B

Drawn by:

Checked by:

Date:

李红元

赵 峥

08/06/16

Piezo Ceramic Element

A

Page:7 of 7

2

1

FT-20T-4.3A1

B

Frequency: 4.3

±0.5

Frequency: 3.4

±0.4

08/06/16

张秀琴

赵 峥

B

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8. History change record

Change Items

A

version
No.

G

Before

After

08/06/13

赵 峥

Date

Drawn

FT-20T-4.3A1

H

6

5

4

3

张秀琴

Approved

G

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2

1