DE3470643D1 - Method and apparatus for supervising digital radio transmission line - Google Patents

Method and apparatus for supervising digital radio transmission line

Info

Publication number
DE3470643D1
DE3470643D1 DE8484401986T DE3470643T DE3470643D1 DE 3470643 D1 DE3470643 D1 DE 3470643D1 DE 8484401986 T DE8484401986 T DE 8484401986T DE 3470643 T DE3470643 T DE 3470643T DE 3470643 D1 DE3470643 D1 DE 3470643D1
Authority
DE
Germany
Prior art keywords
transmission line
radio transmission
digital radio
supervising
supervising digital
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
DE8484401986T
Other languages
English (en)
Inventor
Masahisa Kawai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE3470643D1 publication Critical patent/DE3470643D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
    • G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
    • G01R29/033—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers (the characteristic being frequency)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/241—Testing correct operation using pseudo-errors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
DE8484401986T 1983-10-05 1984-10-04 Method and apparatus for supervising digital radio transmission line Expired DE3470643D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58186166A JPS6077546A (ja) 1983-10-05 1983-10-05 ディジタル無線回線の監視方式

Publications (1)

Publication Number Publication Date
DE3470643D1 true DE3470643D1 (en) 1988-05-26

Family

ID=16183541

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484401986T Expired DE3470643D1 (en) 1983-10-05 1984-10-04 Method and apparatus for supervising digital radio transmission line

Country Status (5)

Country Link
US (1) US4677619A (de)
EP (1) EP0138693B1 (de)
JP (1) JPS6077546A (de)
CA (1) CA1232023A (de)
DE (1) DE3470643D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730313A (en) * 1986-08-18 1988-03-08 Racal Data Communications Inc. Access circuit diagnostics for integrated services digital network
US4800562A (en) * 1987-04-27 1989-01-24 Northern Telecom Limited Circuit and method for monitoring the quality of data in a data stream
JPH084257B2 (ja) * 1987-10-02 1996-01-17 日本電気株式会社 （１＋ｎ）ヒットレス回線切替装置
US5166890A (en) * 1987-12-15 1992-11-24 Southwestern Telephone Company Performance monitoring system
JPH0227819A (ja) * 1988-07-18 1990-01-30 Fujitsu Ltd 回線切替装置における切替トリガ検出回路
US5163051A (en) * 1990-02-02 1992-11-10 Telecom Analysis Systems Inc. Paired bit error rate tester
JP2513919B2 (ja) * 1990-09-05 1996-07-10 株式会社日立製作所 構成制御装置の再構成機能停止防止方式
US5485465A (en) * 1992-05-20 1996-01-16 The Whitaker Corporation Redundancy control for a broadcast data transmission system
DE19636341C1 (de) * 1996-08-30 1997-12-04 Siemens Ag Verfahren zur Charakterisierung von auf einer digitalen Nachrichtenübertragungsstrecke aufgetretenen Übertragungsfehlern
US6915463B2 (en) * 2001-12-26 2005-07-05 Richard Charles Vieregge System and method for performing pre-emptive protection switching
KR20160061172A (ko) * 2014-11-21 2016-05-31 삼성전자주식회사 디코더, 상기 디코더를 포함하는 디코딩 시스템, 및 상기 디코더의 동작 방법
JP2023046995A (ja) 2021-09-24 2023-04-05 富士フイルムビジネスイノベーション株式会社 照合装置及びプログラム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1457294A (en) * 1974-01-05 1976-12-01 Ferranti Ltd Pulse-frequency sensitive switching circuit arrangements felx
IT1041378B (it) * 1975-06-10 1980-01-10 Cselt Centro Studi Lab Telecom Dispositivo per il rilevamento della qualita di trasmissione nei ricevitori di segnali numerici
FR2410919A1 (fr) * 1977-12-05 1979-06-29 Telecommunications Sa Procede d'appreciation de la qualite d'un faisceau hertzien numerique
US4399354A (en) * 1980-03-17 1983-08-16 Vorne Industries, Inc. Digital rate monitor
US4328581A (en) * 1980-06-20 1982-05-04 Rockwell International Corporation Adaptive HF communication system
DE3163529D1 (en) * 1980-11-13 1984-06-14 Hasler Ag Method of maintaining the functioning aptitude of a digital information transmission arrangement, and its application
US4379993A (en) * 1980-12-29 1983-04-12 Gte Automatic Electric Labs Inc. Pulse failure monitor circuit employing selectable frequency reference clock and counter pair to vary time period of pulse failure indication
US4393499A (en) * 1981-03-11 1983-07-12 Ford Aerospace & Communications Corporation Adaptive signal quality measurement circuit for PSK and FSK demodulators
JPS58182356A (ja) * 1982-04-20 1983-10-25 Kokusai Denshin Denwa Co Ltd <Kdd> ビツト誤り率測定方式
US4490817A (en) * 1982-12-13 1984-12-25 At&T Bell Laboratories Packet error rate measurements by distributed controllers

Also Published As

Publication number Publication date
US4677619A (en) 1987-06-30
JPS6077546A (ja) 1985-05-02
EP0138693B1 (de) 1988-04-20
EP0138693A1 (de) 1985-04-24
JPH048981B2 (de) 1992-02-18
CA1232023A (en) 1988-01-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee