GB1455712A - Methods of testing the transmission quality of a telecommuni cations transmission system - Google Patents

Methods of testing the transmission quality of a telecommuni cations transmission system

Info

Publication number
GB1455712A
GB1455712A GB5235373A GB5235373A GB1455712A GB 1455712 A GB1455712 A GB 1455712A GB 5235373 A GB5235373 A GB 5235373A GB 5235373 A GB5235373 A GB 5235373A GB 1455712 A GB1455712 A GB 1455712A
Authority
GB
United Kingdom
Prior art keywords
signal
channel
testing
comparison unit
received signal
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.)
Expired
Application number
GB5235373A
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 Schweiz AG
Original Assignee
Siemens Albis 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 Albis AG filed Critical Siemens Albis AG
Publication of GB1455712A publication Critical patent/GB1455712A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/16—Monitoring arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/14—Monitoring arrangements

Abstract

1455712 Testing a telecommunication channel SIEMENS-ALBIS AG 12 Nov 1973 [6 Dec 1972] 52353/73 Heading G1U In a method of testing a telecommunications channel, a test signal which covers the entire dynamic range of the channel is injected into the transmitter, and the resulting signal S1, Figs. 2 and 3, at the receiver is passed via a monitoring network N to a comparison unit P where it is compared K with a signal S6 derived from itself. As described a bi-polar exponentially decaying signal is applied to the channel and for a perfect channel the received signal S1, Fig. 3a, will be identical to the transmitted signal, whilst for an imperfect channel the received signal S1, Fig. 3b, will exhibit deformities. The received signal S1 is integrated 1, Fig. 2, and inverted V1, the result is added A to the received signal, and the sum signal S3 is filtered H 1 and rectified G to produce a signal S5 which is fed to the comparison unit P. For a perfect channel the signal S5 should be constant as shown in Fig. 3a, but for an imperfect system it will contain irregularities as shown in Fig. 3b. The presence of such irregularities is detected, in the comparison unit, by comparing the signal S5 with a signal S6 obtained by subtracting D the high frequency components of the signal S5 from itself, and the resulting signal S7 is indicative of the overall quality of the channel.
GB5235373A 1972-12-06 1973-11-12 Methods of testing the transmission quality of a telecommuni cations transmission system Expired GB1455712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1777272A CH549909A (en) 1972-12-06 1972-12-06 METHOD FOR MEASURING AND / OR MONITORING THE TRANSMISSION QUALITY OF A MESSAGE TRANSMISSION SYSTEM.

Publications (1)

Publication Number Publication Date
GB1455712A true GB1455712A (en) 1976-11-17

Family

ID=4427995

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5235373A Expired GB1455712A (en) 1972-12-06 1973-11-12 Methods of testing the transmission quality of a telecommuni cations transmission system

Country Status (14)

Country Link
JP (1) JPS4989410A (en)
AT (1) AT346970B (en)
AU (1) AU459959B2 (en)
BE (1) BE808303A (en)
CH (1) CH549909A (en)
DE (1) DE2339981C3 (en)
FI (1) FI58241C (en)
FR (1) FR2210060B1 (en)
GB (1) GB1455712A (en)
IL (1) IL43753A (en)
IT (1) IT1012536B (en)
NL (1) NL159249B (en)
NO (1) NO137711C (en)
SE (1) SE388095B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000941A1 (en) * 1992-06-30 1994-01-06 H. Heuer Instruments Pty. Ltd. Margin test apparatus for integrated services digital networks
EP0644674A2 (en) * 1993-09-22 1995-03-22 Ascom Infrasys AG Method of transmission quality estimation of a speech transmission link
AU669538B2 (en) * 1992-06-30 1996-06-13 H. Heuer Instruments Pty Ltd Margin test apparatus for integrated services digital networks
US5867813A (en) * 1995-05-01 1999-02-02 Ascom Infrasys Ag. Method and apparatus for automatically and reproducibly rating the transmission quality of a speech transmission system
WO2001067628A2 (en) * 2000-03-07 2001-09-13 Board Of Regents, The University Of Texas System Methods for transmitting a waveform having a controllable attenuation and propagation velocity
US6847267B2 (en) 2000-03-07 2005-01-25 Board Of Regents, The University Of Texas System Methods for transmitting a waveform having a controllable attenuation and propagation velocity
US7375602B2 (en) 2000-03-07 2008-05-20 Board Of Regents, The University Of Texas System Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media
US8867657B1 (en) 2014-02-17 2014-10-21 Board Of Regents, The University Of Texas System Communication using analog pulses having exponentially-shaped leading edges

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1209192B (en) * 1980-02-18 1989-07-16 Sits Soc It Telecom Siemens MEASUREMENT SYSTEM FOR MULTIPLE PAM ELEMENTS OF AN ELECTRONIC SWITCHING UNIT FOR TELECOMMUNICATIONS.
US4797735A (en) * 1985-07-04 1989-01-10 Matsushita Electric Industrial Co., Ltd. Distortion surveillance apparatus for television signal transmission system
JPH0612898B2 (en) * 1987-03-24 1994-02-16 三菱電機株式会社 Telemetry method of transmission quality
JPH0611136B2 (en) * 1987-03-24 1994-02-09 三菱電機株式会社 Telemetry method of transmission quality

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000941A1 (en) * 1992-06-30 1994-01-06 H. Heuer Instruments Pty. Ltd. Margin test apparatus for integrated services digital networks
AU669538B2 (en) * 1992-06-30 1996-06-13 H. Heuer Instruments Pty Ltd Margin test apparatus for integrated services digital networks
US5663968A (en) * 1992-06-30 1997-09-02 H. Heuer Instruments Pty Ltd. Margin test method and apparatus for intergrated services digital networks
EP0644674A2 (en) * 1993-09-22 1995-03-22 Ascom Infrasys AG Method of transmission quality estimation of a speech transmission link
EP0644674A3 (en) * 1993-09-22 1996-11-20 Ascom Infrasys Ag Method of transmission quality estimation of a speech transmission link.
US5867813A (en) * 1995-05-01 1999-02-02 Ascom Infrasys Ag. Method and apparatus for automatically and reproducibly rating the transmission quality of a speech transmission system
US6847267B2 (en) 2000-03-07 2005-01-25 Board Of Regents, The University Of Texas System Methods for transmitting a waveform having a controllable attenuation and propagation velocity
WO2001067628A3 (en) * 2000-03-07 2003-09-04 Univ Texas Methods for transmitting a waveform having a controllable attenuation and propagation velocity
WO2001067628A2 (en) * 2000-03-07 2001-09-13 Board Of Regents, The University Of Texas System Methods for transmitting a waveform having a controllable attenuation and propagation velocity
US7375602B2 (en) 2000-03-07 2008-05-20 Board Of Regents, The University Of Texas System Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media
US7859271B2 (en) 2000-03-07 2010-12-28 Board Of Regents, The University Of Texas Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media
US8093911B2 (en) 2000-03-07 2012-01-10 Board Of Regents, The University Of Texas Time-of-flight measurement based on transfer function and simulated exponential stimulus
EP1540844A2 (en) * 2002-08-20 2005-06-15 Board Of Regents The University Of Texas System Methods for transmitting a waveform having a controllable attenuation and propagation velocity
EP1540844A4 (en) * 2002-08-20 2009-12-23 Univ Texas Methods for transmitting a waveform having a controllable attenuation and propagation velocity
US8867657B1 (en) 2014-02-17 2014-10-21 Board Of Regents, The University Of Texas System Communication using analog pulses having exponentially-shaped leading edges
US8923444B1 (en) 2014-02-17 2014-12-30 Board Of Regents, The University Of Texas System Decoding a communication signal that contains analog pulses with exponentially-shaped leading edges

Also Published As

Publication number Publication date
DE2339981C3 (en) 1980-05-14
NL159249B (en) 1979-01-15
NO137711C (en) 1978-04-12
FI58241B (en) 1980-08-29
CH549909A (en) 1974-05-31
AT346970B (en) 1978-12-11
ATA946973A (en) 1978-04-15
FI58241C (en) 1980-12-10
SE388095B (en) 1976-09-20
AU6280773A (en) 1975-04-10
FR2210060A1 (en) 1974-07-05
IL43753A (en) 1976-05-31
AU459959B2 (en) 1975-04-10
DE2339981A1 (en) 1974-07-04
JPS4989410A (en) 1974-08-27
NO137711B (en) 1977-12-27
BE808303A (en) 1974-06-06
FR2210060B1 (en) 1978-02-10
IT1012536B (en) 1977-03-10
IL43753A0 (en) 1974-03-14
NL7316674A (en) 1974-06-10
DE2339981B2 (en) 1979-08-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee