FR2346726A1 - HF coaxial cable reflectometer tester - has tuneable oscillator in hand-held unit with standing-wave indicator with number of deflections indicating distance of fault - Google Patents

HF coaxial cable reflectometer tester - has tuneable oscillator in hand-held unit with standing-wave indicator with number of deflections indicating distance of fault

Info

Publication number
FR2346726A1
FR2346726A1 FR7705571A FR7705571A FR2346726A1 FR 2346726 A1 FR2346726 A1 FR 2346726A1 FR 7705571 A FR7705571 A FR 7705571A FR 7705571 A FR7705571 A FR 7705571A FR 2346726 A1 FR2346726 A1 FR 2346726A1
Authority
FR
France
Prior art keywords
oscillator
tester
hand
cable
reflectometer
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
FR7705571A
Other languages
French (fr)
Other versions
FR2346726B1 (en
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2346726A1 publication Critical patent/FR2346726A1/en
Application granted granted Critical
Publication of FR2346726B1 publication Critical patent/FR2346726B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • 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
    • G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measuring Leads Or Probes (AREA)
  • Locating Faults (AREA)

Abstract

The coaxial cable tester is of the reflectometer type and is fully portable. The instrument is housed in a hand-held case with pistol-grip containing the batteries. A variable-frequency HF oscillator is tunable over the range 70 to 90 Mhz and is loosely coupled to the cable under test via coil and coaxial connector. The oscillator may be permeability-tuned or use varicap-diode tuning. The oscillator is tuned over its range by operating a trigger handle which also switches-on the circuit. Faults in the cable cause standing waves to be set up whose anodes can be indicated by deflections of a meter as the oscillator is swept over its range. Each deflection corresponds to a distance of approx. 5 meters between the measuring point and the fault position along the cable.
FR7705571A 1976-03-29 1977-02-25 HF coaxial cable reflectometer tester - has tuneable oscillator in hand-held unit with standing-wave indicator with number of deflections indicating distance of fault Granted FR2346726A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762613385 DE2613385C2 (en) 1976-03-29 1976-03-29 HF test equipment for installed coaxial cable routes

Publications (2)

Publication Number Publication Date
FR2346726A1 true FR2346726A1 (en) 1977-10-28
FR2346726B1 FR2346726B1 (en) 1980-01-11

Family

ID=5973770

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7705571A Granted FR2346726A1 (en) 1976-03-29 1977-02-25 HF coaxial cable reflectometer tester - has tuneable oscillator in hand-held unit with standing-wave indicator with number of deflections indicating distance of fault

Country Status (7)

Country Link
AT (1) ATA891676A (en)
CH (1) CH601806A5 (en)
DE (1) DE2613385C2 (en)
DK (1) DK133977A (en)
FR (1) FR2346726A1 (en)
IT (1) IT1075430B (en)
NL (1) NL7703347A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1560349A1 (en) * 2004-01-27 2005-08-03 Kaltec Ingerieurleistungen für Nachrichten- und Übertragungstechnik GmbH Device and method for supervising high frequency cables

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931614A1 (en) * 1989-09-22 1991-04-11 Petzetakis George A METHOD FOR PRODUCING A LARGE-CALIBRATED PLASTIC PIPE AND EXTRACTION TOOL FOR IMPLEMENTING THE METHOD

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1560349A1 (en) * 2004-01-27 2005-08-03 Kaltec Ingerieurleistungen für Nachrichten- und Übertragungstechnik GmbH Device and method for supervising high frequency cables

Also Published As

Publication number Publication date
CH601806A5 (en) 1978-07-14
DK133977A (en) 1977-09-30
DE2613385B1 (en) 1977-03-24
ATA891676A (en) 1980-04-15
DE2613385C2 (en) 1977-11-03
NL7703347A (en) 1977-10-03
IT1075430B (en) 1985-04-22
FR2346726B1 (en) 1980-01-11

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Legal Events

Date Code Title Description
ST Notification of lapse