ES410520A1 - Fault locating installation - designed for four line transmission systems esp. carrier frequency or PCM line ccts. - Google Patents

Fault locating installation - designed for four line transmission systems esp. carrier frequency or PCM line ccts.

Info

Publication number
ES410520A1
ES410520A1 ES410520A ES410520A ES410520A1 ES 410520 A1 ES410520 A1 ES 410520A1 ES 410520 A ES410520 A ES 410520A ES 410520 A ES410520 A ES 410520A ES 410520 A1 ES410520 A1 ES 410520A1
Authority
ES
Spain
Prior art keywords
line
ccts
designed
carrier frequency
transmission systems
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.)
Expired
Application number
ES410520A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES410520A1 publication Critical patent/ES410520A1/en
Expired 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
    • H04B17/408—Monitoring; Testing of relay systems without selective localization using successive loop-backs

Abstract

The installation tests from a remote position a number of amplifier sections connected one after the other. The intermediate amplifiers are remotely fed by a constant D.C. from a final position. The D.C. is interrupted in this end station for a definite short space of time which serves as a control signal for the beginning of the remote testing. This closes loops in the intermediate amplifier stations for both the power supply and signal transmission circuits. These circuit completing loops are disconnected in sequence as testing of the functions of the station are completed, and the location of a fault is ascertained. The test switching is under control of the power supply from the end station.
ES410520A 1972-01-12 1973-01-11 Fault locating installation - designed for four line transmission systems esp. carrier frequency or PCM line ccts. Expired ES410520A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722201330 DE2201330C3 (en) 1972-01-12 1972-01-12 Fault location arrangement for 4-wire communication systems

Publications (1)

Publication Number Publication Date
ES410520A1 true ES410520A1 (en) 1975-12-01

Family

ID=5832819

Family Applications (1)

Application Number Title Priority Date Filing Date
ES410520A Expired ES410520A1 (en) 1972-01-12 1973-01-11 Fault locating installation - designed for four line transmission systems esp. carrier frequency or PCM line ccts.

Country Status (4)

Country Link
AU (1) AU473439B2 (en)
CH (1) CH561486A5 (en)
DE (1) DE2201330C3 (en)
ES (1) ES410520A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942410A1 (en) * 1979-10-19 1981-05-07 Siemens AG, 1000 Berlin und 8000 München ADDRESS-FREE ERROR LOCATION BY LOOP IN A MESSAGE ROUTE
GB8830262D0 (en) * 1988-12-24 1989-02-22 Stc Plc Submarine optical cable fault location

Also Published As

Publication number Publication date
AU5083173A (en) 1974-07-11
AU473439B2 (en) 1976-06-24
DE2201330C3 (en) 1975-11-13
DE2201330A1 (en) 1973-07-19
DE2201330B2 (en) 1975-03-20
CH561486A5 (en) 1975-04-30

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