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ATE788T1 - CIRCUIT ARRANGEMENT FOR CARRYING OUT A LOOP TEST FOR DATA TRANSMISSION LINKS. - Google Patents

CIRCUIT ARRANGEMENT FOR CARRYING OUT A LOOP TEST FOR DATA TRANSMISSION LINKS.

Info

Publication number
ATE788T1
ATE788T1 AT79101782T AT79101782T ATE788T1 AT E788 T1 ATE788 T1 AT E788T1 AT 79101782 T AT79101782 T AT 79101782T AT 79101782 T AT79101782 T AT 79101782T AT E788 T1 ATE788 T1 AT E788T1
Authority
AT
Austria
Prior art keywords
data transmission
station
waveform
transmission rate
maximum data
Prior art date
Application number
AT79101782T
Other languages
German (de)
Inventor
Karlheinz Dipl.-Ing. Parras
Helmut Dipl.-Ing. Dupont
Edgar Dipl.-Ing. Bader
Original Assignee
Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6048804&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE788(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh filed Critical Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh
Application granted granted Critical
Publication of ATE788T1 publication Critical patent/ATE788T1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H04L1/243—Testing correct operation by comparing a transmitted test signal with a locally generated replica at the transmitter, using a loop-back
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/14—Arrangements for detecting or preventing errors in the information received by using return channel in which the signals are sent back to the transmitter to be checked ; echo systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

A data transmission path comprises a first and a second station, a first data transmission channel operative for synchronously transmitting data from the first to the second station in synchronism with a predetermined clocking schedule and at a respective first maximum data transmission rate, and a second data transmission channel for asynchronously transmitting data from the second to the first station at a respective second maximum data transmission rate, the first maximum data transmission rate being equal to a multiple p of the second maximum data transmission rate. A test waveform is applied to the first station for transmission to the second station along the first data transmission channel, the test waveform presenting a data transmission rate at least approximately equal to said first maximum data transmission rate. The test waveform, as received at the second station, is applied to a selector circuit whose output waveform is applied to the transmitting input of the second station for transmission back to the first station along the second channel. The selector circuit transmits to its output only every p-th one of the waveform elements applied to its input, relying on clock signals which the second station produces one per waveform element of the synchronously transmitted test waveform. The shortest waveform-element duration of the waveform produced at the output of the selector circuit at least approximately corresponds to said second maximum data transmission rate.
AT79101782T 1978-09-06 1979-06-06 CIRCUIT ARRANGEMENT FOR CARRYING OUT A LOOP TEST FOR DATA TRANSMISSION LINKS. ATE788T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782838816 DE2838816A1 (en) 1978-09-06 1978-09-06 LOOP TEST FOR DATA TRANSFER ROUTES
EP79101782A EP0008608B2 (en) 1978-09-06 1979-06-06 Circuit arrangement for carrying out a loop test for data transmission lines

Publications (1)

Publication Number Publication Date
ATE788T1 true ATE788T1 (en) 1982-04-15

Family

ID=6048804

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79101782T ATE788T1 (en) 1978-09-06 1979-06-06 CIRCUIT ARRANGEMENT FOR CARRYING OUT A LOOP TEST FOR DATA TRANSMISSION LINKS.

Country Status (6)

Country Link
US (1) US4271514A (en)
EP (1) EP0008608B2 (en)
JP (1) JPS5924578B2 (en)
AT (1) ATE788T1 (en)
CA (1) CA1124872A (en)
DE (2) DE2838816A1 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7137048B2 (en) 2001-02-02 2006-11-14 Rambus Inc. Method and apparatus for evaluating and optimizing a signaling system
NL7905052A (en) * 1979-06-28 1980-12-30 Nederlanden Staat SYSTEM FOR REMOTE TESTING A MODEM WITH DIFFERENT TRANSMISSION AND RECEIVING SPEED.
NL180968C (en) * 1980-07-14 1987-05-18 Nederlanden Staat PULSE CONVERTER FOR IN COMBINATION WITH A MODEM, OF WHICH THE TRANSMISSION AND RECEIVING SPEED ARE DIFFERENT, AND FOR SERVING THIS MODEM FROM A DISTANCE CENTRAL STATION.
US4630268A (en) * 1984-08-30 1986-12-16 Rockwell International Corporation Communication circuit loopback test apparatus
FR2576439B1 (en) * 1985-01-21 1987-05-07 Sereg Soc SECURE REMOTE DATA PRINTING SYSTEM
JPS61169047A (en) * 1985-01-22 1986-07-30 Kokusai Denshin Denwa Co Ltd <Kdd> Method for detecting propagation delay time fluctuations in optical fiber transmission lines
US4665521A (en) * 1985-01-25 1987-05-12 Ncr Corporation Portable testing device for monitoring communication line activity
JPH0740702B2 (en) * 1986-03-06 1995-05-01 日本電気株式会社 Remote test circuit
DE3933262A1 (en) * 1989-10-05 1991-04-11 Bosch Gmbh Robert METHOD AND DEVICE FOR BIDIRECTIONAL TRANSMISSION OF DATA
DE4203968A1 (en) * 1992-02-11 1993-08-12 Siemens Ag METHOD AND CIRCUIT ARRANGEMENT FOR LOOP CIRCUIT IN MULTIPLEX SYSTEMS
JPH0795166A (en) * 1993-09-20 1995-04-07 Fujitsu Ltd Transmission system test equipment
DE4437417A1 (en) * 1993-10-19 1995-04-20 Deutsche Bundespost Telekom Method for monitoring digital signal connections
US5612961A (en) * 1995-04-27 1997-03-18 International Business Machines Corporation Method and system for verification of the baud rate for an asynchronous serial device residing within a data processing system
US6069876A (en) * 1997-02-13 2000-05-30 Nortel Networks Corporation Performance monitoring of an ATM Network
DE19758274B4 (en) * 1997-12-31 2004-12-16 Deutsche Telekom Ag Device for forming a test loop for a permanent connection with So interface
US6667967B1 (en) 1999-05-14 2003-12-23 Omninet Capital, Llc High-speed network of independently linked nodes
US6931003B2 (en) * 2000-02-09 2005-08-16 Bookline Flolmstead Llc Packet prioritization protocol for a large-scale, high speed computer network
US7490275B2 (en) 2001-02-02 2009-02-10 Rambus Inc. Method and apparatus for evaluating and optimizing a signaling system
US6873939B1 (en) 2001-02-02 2005-03-29 Rambus Inc. Method and apparatus for evaluating and calibrating a signaling system
US8045565B1 (en) 2001-11-20 2011-10-25 Brookline Flolmstead Llc Method and apparatus for an environmentally hardened ethernet network system
US20040078483A1 (en) * 2002-10-16 2004-04-22 Raymond Simila System and method for implementing virtual loopbacks in ethernet switching elements
US7076377B2 (en) * 2003-02-11 2006-07-11 Rambus Inc. Circuit, apparatus and method for capturing a representation of a waveform from a clock-data recovery (CDR) unit
DE10324745A1 (en) * 2003-05-30 2004-12-30 Rohde & Schwarz Gmbh & Co. Kg Method and test device for determining an error rate
US7607155B2 (en) 2004-03-09 2009-10-20 Thomson Licensing Verifying 22 kHz tone operation in a set-top box
US11228380B2 (en) * 2019-10-29 2022-01-18 Keysight Technologies, Inc. Bit error ratio (BER) measurement including forward error correction (FEC) on back channel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE549048A (en) * 1955-06-28
DE1168506B (en) * 1961-09-15 1964-04-23 Siemens Ag Circuit arrangement for testing signal channels in telecommunications systems
BE756930A (en) * 1969-10-02 1971-03-16 Neumann Elektronik Gmbh EQUIPMENT FOR MONITORING TELECOMMUNICATION LINES AND RADIO-CHANNELS USING ACOUSTIC FREQUENCY
USRE27864E (en) 1970-05-07 1974-01-01 Closed loop test method and apparatus fof duplex data transmission modem
US3743938A (en) * 1971-08-10 1973-07-03 Gen Datacomm Ind Inc Closed data loop test apparatus for data transmission modem
CH541265A (en) * 1972-02-29 1973-08-31 Generaldirektion Ptt Hasler Ag Method for testing four-wire connections between two switching points of a telecommunications network that are to be connected to one another
US3937882A (en) * 1974-04-11 1976-02-10 Vadic Corporation Full-duplex communication system on a two wire line
FR2290804A1 (en) * 1974-11-06 1976-06-04 Labo Cent Telecommunicat DEVICE FOR VERIFYING THE CONTINUITY OF THE DIGITAL AND ANALOGUE SPEAKING PATH BETWEEN DIGITAL AND VOICE FREQUENCY SWITCHING CENTERS
US4034195A (en) * 1975-01-22 1977-07-05 Phillips Petroleum Company Test apparatus and method

Also Published As

Publication number Publication date
JPS5924578B2 (en) 1984-06-11
EP0008608A1 (en) 1980-03-19
EP0008608B2 (en) 1986-04-23
CA1124872A (en) 1982-06-01
DE2962329D1 (en) 1982-04-29
US4271514A (en) 1981-06-02
DE2838816A1 (en) 1980-03-20
EP0008608B1 (en) 1982-03-24
JPS5538795A (en) 1980-03-18

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