$\require{mediawiki-texvc}$

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

Measuring shield breaks in coaxial cable by a sheath test current

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01R-031/08
  • G01R-031/02
출원번호 US-0865237 (1997-05-29)
발명자 / 주소
  • Williams Thomas H.
인용정보 피인용 횟수 : 49  인용 특허 : 10

초록

A system for determining if there is a break in the shield or a compromise in the shielding effectiveness of coaxial cable plant by inducing a reference test signal onto the sheath or outer conductor of a coaxial cable. Concurrent testing is done with a digital sampling receiver for the presence of

대표청구항

[ What I claim is:] [1.] A test system for finding a break in a shield of a coaxial cable, the test system comprising:a transmitter having an output that supplies a reference test signal;a transformer for magnetically inducing the reference test signal onto the shield of the coaxial cable comprising

이 특허에 인용된 특허 (10)

  1. Kang, Chang E.; Lowry, L. Alan; Burkum, Merlin E., Apparatus and method for locating ground faults.
  2. Marshall Richard C. (“The Dappled House” ; 30 ; Ox Lane ; Harpenden ; Herts. ; AL5 GB2), Apparatus for electromagnetic compatibility testing.
  3. Pelletier James A. (Dover NJ), Cable shield fault location using a capacitive-inductive coupler.
  4. Tuttle John E. B. (Falls Church VA), Cable shield resistance test set.
  5. Reichert ; Jr. Harry J. (Warminster PA), Fault detection system as for locating faulty connections in a cable television system.
  6. Bagalini Dante (Johannesburg ZAX), GFCI with auxiliary coil current blocking means and improved test button configuration.
  7. Ahmed ; Adel Abdel Aziz, Ground fault detecting apparatus including current-responsive threshold detection circuitry.
  8. Matsuno Tatsuji (Kanagawa JPX), Method for measuring insulation resistance of electric line.
  9. Shimp ; Richard L., RF leak detector.
  10. Meyer Thomas J. (Pinellas Park FL), System for monitoring the insulation quality of step graded insulated high voltage apparatus.

이 특허를 인용한 특허 (49)

  1. Hoffberg, Steven M.; Hoffberg-Borghesani, Linda I., Adaptive pattern recognition based controller apparatus and method and human-interface therefore.
  2. Hoffberg, Steven M.; Hoffberg-Borghesani, Linda I., Alarm system controller and a method for controlling an alarm system.
  3. Sperber,Martin; Shariatmadar,Shaun, Bi-directional access point.
  4. Totten, Ronald; West, Lamar, Cable communication system optical nodes having selectable attenuation values to mitigate distortion of upstream information.
  5. Nielsen, Steven E.; Totten, Ronald; Halky, Travis, Cable communication systems and methods employing 256-QAM upstream channels and having increased upstream capacity for supporting voice and/or data services.
  6. Nielsen, Steven; Totten, Ronald; Halky, Travis, Cable communication systems and methods employing 256-QAM upstream channels and having increased upstream capacity for supporting voice and/or data services.
  7. Nielsen, Steven; Totten, Ronald; Halky, Travis, Cable communication systems and methods employing QAM upstream channels below 16.4 MHz for increased aggregate deployed upstream capacity.
  8. Nielsen, Steven; Totten, Ronald; Halky, Travis, Cable communication systems and methods employing QAM upstream channels below 16.4 MHz for increased aggregate deployed upstream capacity to support voice and/or data services.
  9. Nielsen, Steven; Totten, Ronald; Halky, Travis, Cable communication systems and methods employing TDMA/ATDMA QAM upstream channels below 20 MHz for increased upstream capacity to support voice and/or data services.
  10. Elze, Hendrik; Kornhuber, Stefan, Device for detecting partial discharge in an insulation system of rotary electric machines.
  11. Agazzi, Oscar E.; Hung, Kenneth Phan; Sorensen, David I., Diagnostics of cable and link performance for a high-speed communication system.
  12. Agazzi, Oscar E.; Hung, Kenneth Phan; Sorensen, David I., Diagnostics of cable and link performance for a high-speed communication system.
  13. Agazzi,Oscar E.; Hung,Kenneth Phan; Sorensen,David I., Diagnostics of cable and link performance for a high-speed communication system.
  14. Williams, Thomas, Fiber node discovery using ranging delay data.
  15. Pixley, Henry; Ugur, Alper; Olcen, Ahmet Burak, Ground fault circuit interrupter for coaxial drop cable and method of operation.
  16. Totten, Ronald; West, Lamar, Hybrid fiber-coaxial (HFC) cable communication systems having well-aligned optical and radio-frequency links to facilitate upstream channel plans having high aggregate data capacity.
  17. Nielsen, Steven E.; Totten, Ronald; Halky, Travis, Ingress-mitigated RF cable plants and ingress mitigation methods for same.
  18. Nielsen, Steven; Totten, Ronald; Halky, Travis, Ingress-mitigated cable communication systems and methods having increased upstream capacity for supporting voice and/or data services.
  19. Hoffberg, Steven M.; Hoffberg-Borghesani, Linda I., Internet appliance system and method.
  20. Nielsen, Steven; Totten, Ronald; Halky, Travis, Iterative mapping methods for ingress mitigation in cable communication systems.
  21. Zinevich, Victor M., Leakage detection of digital signals in an HFC network.
  22. Zinevich, Victor M., Leakage detection of digital signals in an HFC network.
  23. Zinevich, Victor M., Low-cost leakage detector for a digital HFC network.
  24. Zinevich, Victor M., Low-cost leakage detector for a digital HFC network.
  25. Zinevich, Victor M., Method and apparatus for locating network impairments.
  26. Grun,Thomas M., Method and apparatus for measuring impedance of electrical component under high interference conditions.
  27. Zinevitch, Victor M., Method and apparatus for pinpointing common path distortion.
  28. Zinevich, Victor M., Methods and apparatus for detecting and locating leakage of digital signals.
  29. Mayor, Michael A.; Lagrow, David W., Methods and apparatus for detecting electromagnetic interference.
  30. Zinevich, Victor M., Methods and apparatus for locating leakage of digital signals.
  31. Brady, Steven Kenneth; Palmer, Jr., Donald Duane; Brownridge, Selina, Methods and systems for quantifying degradation of wiring insulation.
  32. Nielsen, Steven E.; Totten, Ronald; Halky, Travis, Methods for ingress mitigation in cable communication systems involving repair, replacement and/or adjustment of infrastructure elements.
  33. Nielsen, Steven; Totten, Ronald; Halky, Travis, Methods for ingress mitigation in cable communication systems involving repair, replacement and/or adjustment of infrastructure elements.
  34. Nielsen, Steven E.; Totten, Ronald; Halky, Travis, Methods for ingress remediation in cable communication systems.
  35. Murphy, John J.; Zimmerman, Dennis A.; Shimp, Richard L.; Comeau, Marc-Yvon, Miniature mobile marker system and method.
  36. Huffman, James; Medina, Douglas; Kaufman, Darren, Mitigating potential video traffic interference.
  37. Nielsen, Steven; Totten, Ronald; Halky, Travis, Neighborhood node mapping methods and apparatus for ingress mitigation in cable communication systems.
  38. Hart, Jr., William C.; Smentek, David J.; Moran, III, John L., Non-intrusive cable connection monitoring for use in HFC networks.
  39. Williams,Thomas Holtzman, Power line induction of sheath test current to discover defective coaxial cable.
  40. Sperber, Martin, RF equalizer.
  41. Guy Sucharczuk ; Krzysztof Pradzynski, Reverse digitized communications architecture.
  42. Sucharczuk, Guy; Pradzynski, Krzysztof, Reverse digitized communications architecture.
  43. Murphy, John J.; Zimmerman, Dennis A., Shielding flaw detection and measurement in quadrature amplitude modulated cable telecommunications environment.
  44. Tsubota, Hirokazu, Status detecting device and storage medium storing program.
  45. Higure,Kinichi, System and method for synchronization between base stations.
  46. Smith,Paul Samuel, System and method to locate an anomaly of a conductor.
  47. Williams, Thomas Holtzman, System and method to locate common path distortion on cable systems.
  48. Williams,Thomas Holtzman, System and method to locate common path distortion on cable systems.
  49. Grass,Norbert, Transmission of measured values in high-voltage supply units for electrofilters.
섹션별 컨텐츠 바로가기

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

AI-Helper 아이콘
AI-Helper
안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

선택된 텍스트