JPS6477305A - Crystal oscillator - Google Patents
Crystal oscillatorInfo
- Publication number
- JPS6477305A JPS6477305A JP23425187A JP23425187A JPS6477305A JP S6477305 A JPS6477305 A JP S6477305A JP 23425187 A JP23425187 A JP 23425187A JP 23425187 A JP23425187 A JP 23425187A JP S6477305 A JPS6477305 A JP S6477305A
- Authority
- JP
- Japan
- Prior art keywords
- crystal oscillator
- package
- switch
- crystal
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To execute an operation margin test, maintenance and inspection, etc., without demounting a crystal oscillator mounted on a printed board by including a switch for supplying or interrupting an output signal from a crystal oscillator circuit module to an output terminal in connection terminals in a package. CONSTITUTION:The crystal oscillation circuit module 3 is built in the package 2 and four tube-like connection terminals 4a-4d are electrically connected to the module 3. The switch 9 for supplying or interrupting an output signal from the module 3 to the output terminal 4a is built in the package 2. In case of executing the operation margin test on the basis of slightly different frequency levels, the head 1 of the switch 9 is turned to the OFF side without demounting the crystal oscillator 10 mounted on the printed substrate by soldering and another crystal dscillator to be tested having different frequency is mounted so as to be superposed to the oscillator 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23425187A JPS6477305A (en) | 1987-09-18 | 1987-09-18 | Crystal oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23425187A JPS6477305A (en) | 1987-09-18 | 1987-09-18 | Crystal oscillator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6477305A true JPS6477305A (en) | 1989-03-23 |
Family
ID=16968040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23425187A Pending JPS6477305A (en) | 1987-09-18 | 1987-09-18 | Crystal oscillator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6477305A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007181091A (en) * | 2005-12-28 | 2007-07-12 | Nippon Dempa Kogyo Co Ltd | Two-frequency switching type crystal oscillator |
US7272527B1 (en) | 2006-03-30 | 2007-09-18 | Fujitsu Limited | Method of test of clock generation circuit in electronic device, and electronic device |
-
1987
- 1987-09-18 JP JP23425187A patent/JPS6477305A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007181091A (en) * | 2005-12-28 | 2007-07-12 | Nippon Dempa Kogyo Co Ltd | Two-frequency switching type crystal oscillator |
US7272527B1 (en) | 2006-03-30 | 2007-09-18 | Fujitsu Limited | Method of test of clock generation circuit in electronic device, and electronic device |
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