JPS52123196A - Frequency multiplication type alarm transfer unit - Google Patents
Frequency multiplication type alarm transfer unitInfo
- Publication number
- JPS52123196A JPS52123196A JP3966176A JP3966176A JPS52123196A JP S52123196 A JPS52123196 A JP S52123196A JP 3966176 A JP3966176 A JP 3966176A JP 3966176 A JP3966176 A JP 3966176A JP S52123196 A JPS52123196 A JP S52123196A
- Authority
- JP
- Japan
- Prior art keywords
- transfer unit
- frequency multiplication
- type alarm
- alarm transfer
- multiplication type
- 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
Abstract
PURPOSE: To transfer double alarm items compared with the proper aural frequency by utilizing the proper aural frequency signal through time division by synchronizing aural frequency signal.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3966176A JPS52123196A (en) | 1976-04-08 | 1976-04-08 | Frequency multiplication type alarm transfer unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3966176A JPS52123196A (en) | 1976-04-08 | 1976-04-08 | Frequency multiplication type alarm transfer unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52123196A true JPS52123196A (en) | 1977-10-17 |
Family
ID=12559258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3966176A Pending JPS52123196A (en) | 1976-04-08 | 1976-04-08 | Frequency multiplication type alarm transfer unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52123196A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5689138A (en) * | 1979-12-06 | 1981-07-20 | Furukawa Electric Co Ltd:The | Operation monitoring method for catv relay amplifier |
JPS577639A (en) * | 1980-06-17 | 1982-01-14 | Fujitsu Ltd | Fault monitoring circuit |
-
1976
- 1976-04-08 JP JP3966176A patent/JPS52123196A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5689138A (en) * | 1979-12-06 | 1981-07-20 | Furukawa Electric Co Ltd:The | Operation monitoring method for catv relay amplifier |
JPS577639A (en) * | 1980-06-17 | 1982-01-14 | Fujitsu Ltd | Fault monitoring circuit |
JPS6336582B2 (en) * | 1980-06-17 | 1988-07-20 | Fujitsu Kk |
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