NL7217732A - - Google Patents
Info
- Publication number
- NL7217732A NL7217732A NL7217732A NL7217732A NL7217732A NL 7217732 A NL7217732 A NL 7217732A NL 7217732 A NL7217732 A NL 7217732A NL 7217732 A NL7217732 A NL 7217732A NL 7217732 A NL7217732 A NL 7217732A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
-
- 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)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21366371A | 1971-12-29 | 1971-12-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
NL7217732A true NL7217732A (de) | 1973-07-03 |
NL150983B NL150983B (nl) | 1976-09-15 |
Family
ID=22795995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL727217732A NL150983B (nl) | 1971-12-29 | 1972-12-28 | Inrichting voor het lokaliseren van lusfouten die zich manifesteren als impedantie-onregelmatigheden aan de ingang van een telecommunicatie-kabel. |
Country Status (10)
Country | Link |
---|---|
US (1) | US3751606A (de) |
JP (1) | JPS4874909A (de) |
BE (1) | BE793428A (de) |
CA (1) | CA951842A (de) |
DE (1) | DE2263594C3 (de) |
FR (1) | FR2166156B1 (de) |
GB (1) | GB1412270A (de) |
IT (1) | IT976171B (de) |
NL (1) | NL150983B (de) |
SE (1) | SE388288B (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3904839A (en) * | 1974-07-18 | 1975-09-09 | Bell Telephone Labor Inc | Loop fault locater |
JPS55125427A (en) * | 1979-03-23 | 1980-09-27 | Kokusai Denshin Denwa Co Ltd <Kdd> | Method of measuring breaking position of optical |
US4229626A (en) * | 1979-08-01 | 1980-10-21 | Bell Telephone Laboratories, Incorporated | Loop fault sectionalization |
US4307267A (en) * | 1980-06-16 | 1981-12-22 | Bell Telephone Laboratories, Incorporated | Testing loaded transmission lines |
US4446421A (en) * | 1981-06-22 | 1984-05-01 | Grumman Aerospace Corporation | Apparatus and method for locating faults in cables |
US4689752A (en) * | 1983-04-13 | 1987-08-25 | Niagara Mohawk Power Corporation | System and apparatus for monitoring and control of a bulk electric power delivery system |
US4760592A (en) * | 1985-02-07 | 1988-07-26 | Secom General Corporation | Wire tap detection device with passive testing |
DE3921594A1 (de) * | 1989-06-28 | 1991-01-10 | Wolfgang Sprodofsky | Impulsechomessgeraet mit automatischer schwellenanpassung |
KR100212020B1 (ko) * | 1990-10-24 | 1999-08-02 | 제임스 제이. 키넌 | 전기아크 및 고주파 스펙트럼 검출 |
US5477150A (en) * | 1990-10-24 | 1995-12-19 | Hendry Mechanical Works | Electric arc and radio frequency spectrum detection |
US6144721A (en) * | 1996-01-05 | 2000-11-07 | Communications Technology Corporation | Apparatus and method for line pair testing and fault diagnostics |
US5977773A (en) * | 1997-08-15 | 1999-11-02 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Non-intrusive impedance-based cable tester |
US5894223A (en) * | 1997-09-24 | 1999-04-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Non-intrusive cable tester |
FI981990A (fi) * | 1998-09-15 | 2000-03-16 | Nokia Networks Oy | Mittausmenetelmä ja mittauslaite |
US6433558B1 (en) * | 1999-05-13 | 2002-08-13 | Microtest, Inc. | Method for diagnosing performance problems in cabling |
US6566889B2 (en) * | 2001-04-17 | 2003-05-20 | Texas Instruments Incorporated | Line diagnostics for wireline modems |
US6959037B2 (en) * | 2003-09-15 | 2005-10-25 | Spirent Communications Of Rockville, Inc. | System and method for locating and determining discontinuities and estimating loop loss in a communications medium using frequency domain correlation |
US7295018B2 (en) | 2004-04-12 | 2007-11-13 | Fluke Corporation | Correction of loss and dispersion in cable fault measurements |
US7385932B2 (en) * | 2004-04-27 | 2008-06-10 | Telecommunications Research Laboratory | Wideband frequency domain reflectometry to determine the nature and location of subscriber line faults |
US7966137B2 (en) * | 2005-10-03 | 2011-06-21 | Wirescan As | Line resonance analysis system |
WO2008019446A1 (en) * | 2006-08-18 | 2008-02-21 | Aurora Energy Pty Ltd | Method and apparatus for detecting a fault in a supply line |
US11498442B2 (en) * | 2019-09-17 | 2022-11-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Systems and methods for noise cancellation in protective earth resistance check of vehicle onboard battery charger |
CN114441606B (zh) * | 2021-12-28 | 2023-11-24 | 国网河北省电力有限公司电力科学研究院 | 电缆水树枝老化缺陷的定位方法及其测试方法、设备 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2490377A (en) * | 1944-12-16 | 1949-12-06 | Universal Electronic Lab Inc | System for determining the point of break in an electrical conductor |
US2492150A (en) * | 1945-08-21 | 1949-12-27 | Standard Telephones Cables Ltd | Electrical testing system |
US3517306A (en) * | 1968-06-25 | 1970-06-23 | Bell Telephone Labor Inc | Signal reflection type fault location system utilizing a low frequency test signal with test signal cancellation in signal display apparatus |
US3612782A (en) * | 1970-03-02 | 1971-10-12 | Bell Telephone Labor Inc | Method and apparatus for detecting the location of a fault between two repeaters of a one-way repeatered transmission line |
-
0
- BE BE793428D patent/BE793428A/xx unknown
-
1971
- 1971-12-29 US US00213663A patent/US3751606A/en not_active Expired - Lifetime
-
1972
- 1972-07-10 CA CA146,728,A patent/CA951842A/en not_active Expired
- 1972-12-15 SE SE7216428A patent/SE388288B/xx unknown
- 1972-12-27 DE DE2263594A patent/DE2263594C3/de not_active Expired
- 1972-12-27 JP JP47130126A patent/JPS4874909A/ja active Pending
- 1972-12-27 IT IT71100/72A patent/IT976171B/it active
- 1972-12-28 GB GB5975372A patent/GB1412270A/en not_active Expired
- 1972-12-28 NL NL727217732A patent/NL150983B/xx unknown
- 1972-12-28 FR FR7246757A patent/FR2166156B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE388288B (sv) | 1976-09-27 |
FR2166156B1 (de) | 1978-06-02 |
CA951842A (en) | 1974-07-23 |
DE2263594B2 (de) | 1974-05-30 |
BE793428A (fr) | 1973-04-16 |
FR2166156A1 (de) | 1973-08-10 |
DE2263594C3 (de) | 1975-01-23 |
GB1412270A (en) | 1975-10-29 |
DE2263594A1 (de) | 1973-07-05 |
NL150983B (nl) | 1976-09-15 |
JPS4874909A (de) | 1973-10-09 |
IT976171B (it) | 1974-08-20 |
US3751606A (en) | 1973-08-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
VJC | Lapsed due to non-payment of the due maintenance fee for the patent or patent application | ||
NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: WESTERN ELECTRI |