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JPS5217041A - System for detecting a point on a transmission line where an abnormal state occurs - Google Patents

System for detecting a point on a transmission line where an abnormal state occurs

Info

Publication number
JPS5217041A
JPS5217041A JP50092020A JP9202075A JPS5217041A JP S5217041 A JPS5217041 A JP S5217041A JP 50092020 A JP50092020 A JP 50092020A JP 9202075 A JP9202075 A JP 9202075A JP S5217041 A JPS5217041 A JP S5217041A
Authority
JP
Japan
Prior art keywords
transmission line
abnormal state
point
detecting
state occurs
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
JP50092020A
Other languages
Japanese (ja)
Inventor
Masao Yanaka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50092020A priority Critical patent/JPS5217041A/en
Publication of JPS5217041A publication Critical patent/JPS5217041A/en
Pending legal-status Critical Current

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  • Small-Scale Networks (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

PURPOSE: To detect an abnormal state occurring on a loop transmission line and its occurrence point without increasing transmission lines etc.
COPYRIGHT: (C)1977,JPO&Japio
JP50092020A 1975-07-30 1975-07-30 System for detecting a point on a transmission line where an abnormal state occurs Pending JPS5217041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50092020A JPS5217041A (en) 1975-07-30 1975-07-30 System for detecting a point on a transmission line where an abnormal state occurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50092020A JPS5217041A (en) 1975-07-30 1975-07-30 System for detecting a point on a transmission line where an abnormal state occurs

Publications (1)

Publication Number Publication Date
JPS5217041A true JPS5217041A (en) 1977-02-08

Family

ID=14042839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50092020A Pending JPS5217041A (en) 1975-07-30 1975-07-30 System for detecting a point on a transmission line where an abnormal state occurs

Country Status (1)

Country Link
JP (1) JPS5217041A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100652A (en) * 1982-11-30 1984-06-09 Yokogawa Hokushin Electric Corp Status detecting method of loop transmission line
JPS60501487A (en) * 1983-05-31 1985-09-05 クローネ　ファイバー　オプティック　コミュニカツィオンステヒニク　ゲーエムベーハー Data transmission method and device in data loop
JPS62175045A (en) * 1986-01-28 1987-07-31 Nec Corp Alarm informing system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100652A (en) * 1982-11-30 1984-06-09 Yokogawa Hokushin Electric Corp Status detecting method of loop transmission line
JPS60501487A (en) * 1983-05-31 1985-09-05 クローネ　ファイバー　オプティック　コミュニカツィオンステヒニク　ゲーエムベーハー Data transmission method and device in data loop
JPS62175045A (en) * 1986-01-28 1987-07-31 Nec Corp Alarm informing system

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