JPS5739361A - Cable disconnection tester - Google Patents

Cable disconnection tester

Info

Publication number
JPS5739361A
JPS5739361A JP55113950A JP11395080A JPS5739361A JP S5739361 A JPS5739361 A JP S5739361A JP 55113950 A JP55113950 A JP 55113950A JP 11395080 A JP11395080 A JP 11395080A JP S5739361 A JPS5739361 A JP S5739361A
Authority
JP
Japan
Prior art keywords
reset
circuit
potential
circuits
disconnected state
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.)
Granted
Application number
JP55113950A
Other languages
Japanese (ja)
Other versions
JPS6367669B2 (en
Inventor
Seiki Tamagawa
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
Priority to JP55113950A priority Critical patent/JPS5739361A/en
Publication of JPS5739361A publication Critical patent/JPS5739361A/en
Publication of JPS6367669B2 publication Critical patent/JPS6367669B2/ja
Granted legal-status Critical Current

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
    • G01R31/54—Testing for continuity
    • 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
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • 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)

Abstract

PURPOSE:To hold display by buzzers, lamps, etc. when a once disconnected state is reset or a momentary disconnected state occurs by using signal holding circuits. CONSTITUTION:A flip-flop FF is reset by a resetting circuit 7, to make its output Q zero potential. Then, display circuits 6-1-6-n are not driven. If a cable 1 to be tested is normal at the time of testing, the potential of P1 is zero and the FF of signal holding circuit 5-1-5-n are not set. When a disconnection occurs in the cable, the potential of the P1 of the corresponding detecting circuit 4 rises, and consequently, the FF of the holding circuits is set, by which the display circuits 6 are driven. This state continues until it is reset by a reset circuit 7. With such constitution, the momentary disconnected state is detected and displayed.
JP55113950A 1980-08-21 1980-08-21 Cable disconnection tester Granted JPS5739361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55113950A JPS5739361A (en) 1980-08-21 1980-08-21 Cable disconnection tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55113950A JPS5739361A (en) 1980-08-21 1980-08-21 Cable disconnection tester

Publications (2)

Publication Number Publication Date
JPS5739361A true JPS5739361A (en) 1982-03-04
JPS6367669B2 JPS6367669B2 (en) 1988-12-27

Family

ID=14625263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55113950A Granted JPS5739361A (en) 1980-08-21 1980-08-21 Cable disconnection tester

Country Status (1)

Country Link
JP (1) JPS5739361A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093946U (en) * 1983-12-02 1985-06-26 古河電気工業株式会社 Optical cable with disconnection alarm
KR100678833B1 (en) * 2000-07-24 2007-02-05 주식회사 케이티 Apparatus for detecting a cutoff of t/b bus cable in tdx

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093946U (en) * 1983-12-02 1985-06-26 古河電気工業株式会社 Optical cable with disconnection alarm
KR100678833B1 (en) * 2000-07-24 2007-02-05 주식회사 케이티 Apparatus for detecting a cutoff of t/b bus cable in tdx

Also Published As

Publication number Publication date
JPS6367669B2 (en) 1988-12-27

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