JPS5733845A - Faulty place detecting method of repeating transmission line - Google Patents

Faulty place detecting method of repeating transmission line

Info

Publication number
JPS5733845A
JPS5733845A JP10873280A JP10873280A JPS5733845A JP S5733845 A JPS5733845 A JP S5733845A JP 10873280 A JP10873280 A JP 10873280A JP 10873280 A JP10873280 A JP 10873280A JP S5733845 A JPS5733845 A JP S5733845A
Authority
JP
Japan
Prior art keywords
coaxial cable
minimum
repeater
maximum
cox
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.)
Granted
Application number
JP10873280A
Other languages
Japanese (ja)
Other versions
JPS6012816B2 (en
Inventor
Masaru Aoyanagi
Haruo Ogura
Tetsuo Hanehiro
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.)
Toyo Communication Equipment Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Toyo Communication Equipment Co Ltd
Nippon Telegraph and Telephone Corp
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 Toyo Communication Equipment Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Toyo Communication Equipment Co Ltd
Priority to JP55108732A priority Critical patent/JPS6012816B2/en
Publication of JPS5733845A publication Critical patent/JPS5733845A/en
Publication of JPS6012816B2 publication Critical patent/JPS6012816B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing

Landscapes

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

Abstract

PURPOSE:To detect a faulty place, by measuring the number of the maximum and the minimum of the impedance in case of seeing the repeater side from the feed terminal, and also estimating the repeater stage up to the faulty place, in a long distance repeating transmission line of a large capacity coaxial cable (COX). CONSTITUTION:The impedance characteristic of a power separating filter (PSF)- a low-pass filter (LPF) through a coaxial cable (COX) is derived by means of computer simulation in case when the impedance characteristic has been changed to (i) when disconnection and ground-fault have occurred between i-th coaxial cable and i+1-th coaxial cable COX(i+1) of a repeater REP, because when the number of PSFs to be connected by the repeater is increased, the number of the maximum and the minimum is increased. When a fault has occured, the fault generation point is detected by connecting a measuring device consisting of a sweep oscillator SG, voltage, and current detecting and recording meters LM1, LM2, to feed terminals A, B, deriving the input impedance, input voltage, the number of maximum and minimum of a flowing current, a maximum value, a minimum value, a frequency interval, etc., within a constant frequency range, and comparing it with a value which has been derived by means of simulation.
JP55108732A 1980-08-07 1980-08-07 How to detect faults in relay transmission lines Expired JPS6012816B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55108732A JPS6012816B2 (en) 1980-08-07 1980-08-07 How to detect faults in relay transmission lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55108732A JPS6012816B2 (en) 1980-08-07 1980-08-07 How to detect faults in relay transmission lines

Publications (2)

Publication Number Publication Date
JPS5733845A true JPS5733845A (en) 1982-02-24
JPS6012816B2 JPS6012816B2 (en) 1985-04-03

Family

ID=14492121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55108732A Expired JPS6012816B2 (en) 1980-08-07 1980-08-07 How to detect faults in relay transmission lines

Country Status (1)

Country Link
JP (1) JPS6012816B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02100552A (en) * 1988-10-07 1990-04-12 Masao Uchiumi Crosstalked position identifier for telephone line
CN113075496A (en) * 2021-02-25 2021-07-06 深圳供电局有限公司 Cable fault positioning method and device, computer equipment and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02100552A (en) * 1988-10-07 1990-04-12 Masao Uchiumi Crosstalked position identifier for telephone line
CN113075496A (en) * 2021-02-25 2021-07-06 深圳供电局有限公司 Cable fault positioning method and device, computer equipment and storage medium

Also Published As

Publication number Publication date
JPS6012816B2 (en) 1985-04-03

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