DK0454578T3 - Method for verifying the efficiency of the electromagnetic shielding on a cord and apparatus for carrying out the method - Google Patents

Method for verifying the efficiency of the electromagnetic shielding on a cord and apparatus for carrying out the method

Info

Publication number
DK0454578T3
DK0454578T3 DK91401091.3T DK91401091T DK0454578T3 DK 0454578 T3 DK0454578 T3 DK 0454578T3 DK 91401091 T DK91401091 T DK 91401091T DK 0454578 T3 DK0454578 T3 DK 0454578T3
Authority
DK
Denmark
Prior art keywords
signal
cable
screening
lead
perturbing
Prior art date
Application number
DK91401091.3T
Other languages
Danish (da)
Inventor
Yves Guedon
Paul Rattier
Bernard Demoulin
Serge Robin
Mohamed Rochdi
Original Assignee
Bull 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 Bull Sa filed Critical Bull Sa
Application granted granted Critical
Publication of DK0454578T3 publication Critical patent/DK0454578T3/en

Links

Classifications

    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Processing Of Terminals (AREA)
  • Insulated Conductors (AREA)

Abstract

The process tests the quality of the electromagnetic screening of a conducting lead which consists of a shielded cable (1) with at least one conductor (10, 11) in this cable and a shielded connector (2, 3) at each end of this cable. The process involves injecting into the shielding (14, 25, 35) of the lead a transient perturbing signal Ip(t) of predetermined value and shape, and measuring the resultant signal (Vr(t), real) appearing on one of the cable conductors in response to the passage of the perturbing signal. The resultant signal is compared with a reference signal (Vr(t), ref) appearing on the conductor of a lead identical to the one under test and supplied with the same perturbing signal. The aim is to find out from the result of the comparison whether the screening is correct, doubtful or poor. Application to the evaluation of the quality of the screening of leads packaged in coils. <IMAGE>
DK91401091.3T 1990-04-27 1991-04-24 Method for verifying the efficiency of the electromagnetic shielding on a cord and apparatus for carrying out the method DK0454578T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9005361A FR2661508B1 (en) 1990-04-27 1990-04-27 METHOD FOR VERIFYING THE EFFICIENCY OF THE ELECTROMAGNETIC SHIELDING OF A CONDUCTIVE CORD, AND DEVICE FOR CARRYING OUT THE METHOD.

Publications (1)

Publication Number Publication Date
DK0454578T3 true DK0454578T3 (en) 1994-09-19

Family

ID=9396138

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91401091.3T DK0454578T3 (en) 1990-04-27 1991-04-24 Method for verifying the efficiency of the electromagnetic shielding on a cord and apparatus for carrying out the method

Country Status (6)

Country Link
EP (1) EP0454578B1 (en)
AT (1) ATE108561T1 (en)
DE (1) DE69102811T2 (en)
DK (1) DK0454578T3 (en)
ES (1) ES2060317T3 (en)
FR (1) FR2661508B1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5378992A (en) * 1993-06-10 1995-01-03 The Boeing Company Method and apparatus for measuring the loop self impedance of shielded wiring non-intrusively utilizing the current transformer ratio of a sense current probe and the current transformer ratio of a drive current probe
US5463317A (en) * 1994-06-29 1995-10-31 The Boeing Company Shield integrity monitor
FR2746504B1 (en) * 1996-03-21 1998-06-12 Gilles Delcourt METHOD AND APPARATUS FOR DETECTING A FAULT IN ELECTRICAL CONNECTION BETWEEN A CONNECTOR AND AN ARMORED CABLE
DE102008008708A1 (en) * 2007-12-21 2009-06-25 Endress + Hauser Process Solutions Ag Method for determining damage to a connecting line and corresponding device and electromagnetic flowmeter
DE102009021986A1 (en) * 2009-05-19 2010-11-25 KMT Külzer Medizintechnik GmbH An ultrasound probe test apparatus, an ultrasound measuring apparatus and a method of testing an ultrasound probe
US9316677B2 (en) 2012-02-29 2016-04-19 Apple Inc. Devices and methods for testing flex cable shielding
CN104345926B (en) * 2013-07-24 2018-08-07 宸鸿科技(厦门)有限公司 Touch panel and its test method
CN104215846B (en) * 2014-08-22 2016-12-07 深圳市威富多媒体有限公司 A kind of test system of electromagnetic screen
US10770410B2 (en) * 2018-08-03 2020-09-08 Arm Limited Circuit alteration detection in integrated circuits

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259968A (en) * 1961-08-04 1966-07-12 Circuit Controls Corp Method and apparatus for fabrication and in situ testing of wire harness structures
FR2170830B1 (en) * 1972-02-02 1974-10-18 Labinal

Also Published As

Publication number Publication date
FR2661508A1 (en) 1991-10-31
EP0454578A1 (en) 1991-10-30
DE69102811D1 (en) 1994-08-18
ES2060317T3 (en) 1994-11-16
FR2661508B1 (en) 1992-07-10
ATE108561T1 (en) 1994-07-15
EP0454578B1 (en) 1994-07-13
DE69102811T2 (en) 1994-11-24

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