JPS52123196A - Frequency multiplication type alarm transfer unit - Google Patents

Frequency multiplication type alarm transfer unit

Info

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
Application number
JP3966176A
Other languages
Japanese (ja)
Inventor
Shujiro Hoshiko
Masaji Sugiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3966176A priority Critical patent/JPS52123196A/en
Publication of JPS52123196A publication Critical patent/JPS52123196A/en
Pending legal-status Critical Current

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
JP3966176A 1976-04-08 1976-04-08 Frequency multiplication type alarm transfer unit Pending JPS52123196A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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