JPS53918A - Failure detection system in repeater - Google Patents

Failure detection system in repeater

Info

Publication number
JPS53918A
JPS53918A JP7443676A JP7443676A JPS53918A JP S53918 A JPS53918 A JP S53918A JP 7443676 A JP7443676 A JP 7443676A JP 7443676 A JP7443676 A JP 7443676A JP S53918 A JPS53918 A JP S53918A
Authority
JP
Japan
Prior art keywords
repeater
detection system
failure detection
failure
repeaters
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
JP7443676A
Other languages
Japanese (ja)
Inventor
Yoshihiko Miyano
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 JP7443676A priority Critical patent/JPS53918A/en
Publication of JPS53918A publication Critical patent/JPS53918A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/407—Monitoring; Testing of relay systems without selective localization
    • H04B17/409—Monitoring; Testing of relay systems without selective localization by means of resistance, voltage or current measurement

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To add a circuit capable of reducing the grounding impedance upon failure to each of the relays to measure the potential against the ground so as to enable easy detection of the failure in repeaters.
JP7443676A 1976-06-25 1976-06-25 Failure detection system in repeater Pending JPS53918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7443676A JPS53918A (en) 1976-06-25 1976-06-25 Failure detection system in repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7443676A JPS53918A (en) 1976-06-25 1976-06-25 Failure detection system in repeater

Publications (1)

Publication Number Publication Date
JPS53918A true JPS53918A (en) 1978-01-07

Family

ID=13547159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7443676A Pending JPS53918A (en) 1976-06-25 1976-06-25 Failure detection system in repeater

Country Status (1)

Country Link
JP (1) JPS53918A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547987U (en) * 1991-11-29 1993-06-25 秀工電子株式会社 Multi-faceted display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547987U (en) * 1991-11-29 1993-06-25 秀工電子株式会社 Multi-faceted display device
JP2508448Y2 (en) * 1991-11-29 1996-08-21 秀工電子株式会社 Multi-faceted display device

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