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DE2209580A1 - Circuit arrangement for checking the condition of a two-wire line - Google Patents

Circuit arrangement for checking the condition of a two-wire line

Info

Publication number
DE2209580A1
DE2209580A1 DE19722209580 DE2209580A DE2209580A1 DE 2209580 A1 DE2209580 A1 DE 2209580A1 DE 19722209580 DE19722209580 DE 19722209580 DE 2209580 A DE2209580 A DE 2209580A DE 2209580 A1 DE2209580 A1 DE 2209580A1
Authority
DE
Germany
Prior art keywords
line
capacitor
ctl
tested
test
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
DE19722209580
Other languages
German (de)
Other versions
DE2209580C3 (en
DE2209580B2 (en
Inventor
Neuilly sur Seine Hauts de Seine Randnanarana Eugene Pans Salomon Andre Clamart Hauts de Seine Cardonnel Gerard Marcel Ie, (Frankreich)
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of DE2209580A1 publication Critical patent/DE2209580A1/en
Publication of DE2209580B2 publication Critical patent/DE2209580B2/en
Application granted granted Critical
Publication of DE2209580C3 publication Critical patent/DE2209580C3/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Description

AlAl

Verwendete BezugszeichenReference symbols used

G.M.Le Cardonnel 6-1-1G.M. Le Cardonnel 6-1-1

DeutschGerman AdernVeins wireswires Ll, L2Ll, L2 TeilnehmerstelleSubscriber station subscriber's stationsubscriber's station PtPt SpeisewiderständeFeed resistors feeding resistorsfeeding resistors RB, RORB, RO PrüfschaltungTest circuit test circuittest circuit CH, CT2CH, CT2 AbfrageeinrichtungInterrogator interrogation deviceinterrogation device DTDT DifferenzverstärkerDifferential amplifier differential amplifierdifferential amplifier AMAT THE Widerstandresistance resistorresistor R2R2 Kondensatorcapacitor capacitorcapacitor Cl, C2Cl, C2 EntkopplungsdiodeDecoupling diode decoupling diodedecoupling diode Dl, D2Dl, D2 ttdd ItIt D'1,D'2D'1, D'2 AbfrageeingangQuery input interrogation inputinterrogation input El, E2El, E2 Ausgangexit outputoutput K, MK, M VerbindungspunktConnection point connecting pointconnecting point A, BAWAY WiderständeResistances resistorsresistors R1...R7,R1OR1 ... R7, R1O Transistortransistor transistortransistor TT PunktPoint pointpoint L, NL, N Ausgangexit outputoutput SS.

01-8-81201-8-812

209839/07B2209839 / 07B2

LeerseiteBlank page

Claims (1)

jySchaltungsanordnung zum Prüfen des Zustandes einer zweiadrigen Leitung, die am einen Ende über zwei etwa gleicheWiderstände von einer Gleichspannungsquelle gespeist wird, und der am anderen Ende wenigstens auf einer Ader ein Zeichenpotential aufgedrückt wird, für Fernmelde-, Insbesondere Fernsprechleitungen, gekennzeichnet durch eine erste und eine zweite Prüfschaltung (CTl, CT2), denen am Eingang Prüfimpulse zugeführt werden und die an ihrem Ausgang in Abhängigkeit vom Potential auf der zu prüfenden Leitung Leselmpulse abgeben, durch eine Reihenschaltung einer Diode (Dl bzw. D2), eines Kondensators (Cl bzw*C2) und einer weiteren Diode (D1I bzw.Df2) in jeder Prüfschaltung, wobei in der einen Prüfschaltung (CTl) die Leseseite des Kondensators (Cl) und in der anderen Prüfschaltung (CT2) die Abfrageseite des Kondensators (C2) mit der zu prüfenden Ader (Ll bzw.L2) verbunden ist, und durch einen an beide Prüfschaltungen (CTl,CT2) angeschlossenen Differenz verstärker (AM), der auf voneinander abweichende Leseimpulse anspricht und nur in diesem Fall an seinen Ausgang (S) ein Zeichen für das Zeichenpotential auf der zu prüfenden Leitung (Ll,L2) abgibt.Circuit arrangement for checking the condition of a two-wire line, which is fed at one end via two approximately equal resistors from a direct voltage source, and which at the other end has a symbol potential applied to at least one wire, for telecommunication lines, in particular telephone lines, characterized by a first and a second test circuit (CTl, CT2), to which test pulses are fed at the input and which emit read pulses at their output depending on the potential on the line to be tested, through a series connection of a diode (Dl or D2), a capacitor (Cl or * C2 ) and a further diode (D 1 I or D f 2) in each test circuit, with the read side of the capacitor (Cl) in one test circuit (CTl) and the interrogation side of the capacitor (C2) in the other test circuit (CT2) of the wire to be tested (Ll or L2) is connected, and through a differential amplifier (AM) connected to both test circuits (CTl, CT2), the on vone responds to different read pulses and only in this case outputs a character for the character potential on the line to be tested (Ll, L2) at its output (S). 2.Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die mit der zu prüfenden Leitung verbundene Seite des Kondensators (Cl bzw.C2) jeweils mit dem entsprechenden Speisepotential der Fernmeldeleitung verbunden ist.Circuit arrangement according to Claim 1, characterized in that the side of the capacitor (C1 or C2) connected to the line to be tested is each connected to the corresponding feed potential of the telecommunication line. 5.Schaltungsanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß außer dem Differenzverstärker (AM) ein Diskriminator an wenigstens eine der Prüfschaltungen (CTl,CT2) angeschlossen ist, der die Amplitude des Leseimpulses als Kennzeichen für einen bestehenden Schleifenschluß überwacht.5.Schaltung arrangement according to claim 1 or 2, characterized in that in addition to the differential amplifier (AM) a discriminator is connected to at least one of the test circuits (CTl, CT2), which monitors the amplitude of the read pulse as an indicator of an existing loop closure. 209839/0752209839/0752
DE19722209580 1971-03-05 1972-02-29 Circuit arrangement for checking the operating status of a two-wire line Expired DE2209580C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7107698A FR2127393A5 (en) 1971-03-05 1971-03-05

Publications (3)

Publication Number Publication Date
DE2209580A1 true DE2209580A1 (en) 1972-09-21
DE2209580B2 DE2209580B2 (en) 1978-06-15
DE2209580C3 DE2209580C3 (en) 1979-02-08

Family

ID=9073017

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722209580 Expired DE2209580C3 (en) 1971-03-05 1972-02-29 Circuit arrangement for checking the operating status of a two-wire line

Country Status (3)

Country Link
BE (1) BE780158A (en)
DE (1) DE2209580C3 (en)
FR (1) FR2127393A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8156741B2 (en) * 2007-12-04 2012-04-17 Mann + Hummel Gmbh Exhaust gas turbocharger for an internal combustion engine and device for switching an air guiding device of an exhaust gas turbocharger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8156741B2 (en) * 2007-12-04 2012-04-17 Mann + Hummel Gmbh Exhaust gas turbocharger for an internal combustion engine and device for switching an air guiding device of an exhaust gas turbocharger

Also Published As

Publication number Publication date
DE2209580C3 (en) 1979-02-08
BE780158A (en) 1972-09-04
DE2209580B2 (en) 1978-06-15
FR2127393A5 (en) 1972-10-13

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee