GB1329883A - Synchronous transmission systems - Google Patents

Synchronous transmission systems

Info

Publication number
GB1329883A
GB1329883A GB3972971A GB3972971A GB1329883A GB 1329883 A GB1329883 A GB 1329883A GB 3972971 A GB3972971 A GB 3972971A GB 3972971 A GB3972971 A GB 3972971A GB 1329883 A GB1329883 A GB 1329883A
Authority
GB
United Kingdom
Prior art keywords
terminal
gate
bits
input
descrambler
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
GB3972971A
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 GB1329883A publication Critical patent/GB1329883A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling

Abstract

1329883 Digital transmission; fault testing SIEMENS AG 24 Aug 1971 [23 Sept 1970] 39729/71 Heading H4P In a synchronous data transmission system in which a scrambler (SC) is provided at the transmitting end and a descrambler (DSC) at the receiver, the system may be tested by providing a continuous input via a switch (S1) to the scrambler so that it develops a quasirandom sequence which is checked at the receiver reforming the continuous signal which is applied to a fault indicating device (SA). Terminal (M) provides a test signal = 1. The signal emitted by the descrambler is conducted to terminal S. In the event of any 0's occurring the number of bits has been incorrectly received hence any faulty 0 bits are applied by an inverter G1 to one input of a gate G2 second input of which receives the pulse train through terminal T which switches gate T2 for a duration of a timing pulse during faulty bits. Gate G2 triggers a monostable circuit K1 causing lamp SL to illuminate via amplifier V1 for a determined period e.g. 300 ms. Monostable K1 recommences the timing period if retriggered in the operative state. Gate G2 also is connected by an amplifier V2 to a terminal Z connected to a counter or indicator to record or indicate a number of faults during the test period.
GB3972971A 1970-09-23 1971-08-24 Synchronous transmission systems Expired GB1329883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702046964 DE2046964B2 (en) 1970-09-23 1970-09-23 METHOD OF MEASURING BIT ERROR FREQUENCY IN SYNCHRONOUS TRANSMISSION

Publications (1)

Publication Number Publication Date
GB1329883A true GB1329883A (en) 1973-09-12

Family

ID=5783218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3972971A Expired GB1329883A (en) 1970-09-23 1971-08-24 Synchronous transmission systems

Country Status (7)

Country Link
BE (1) BE772984A (en)
CH (1) CH529489A (en)
DE (1) DE2046964B2 (en)
FR (1) FR2107886B1 (en)
GB (1) GB1329883A (en)
NL (1) NL7112830A (en)
SE (1) SE378497B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2319930A (en) * 1996-11-27 1998-06-03 Sony Uk Ltd Storage and transmission of one-bit data

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094902A3 (en) * 1982-05-14 1985-11-27 Heinrich-Hertz-Institut für Nachrichtentechnik Berlin GmbH Method of locating error sources in digital systems, and scrambler/descrambler for carrying out this method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1488576A (en) * 1966-08-02 1967-07-13 Western Electric Co Signal scrambling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2319930A (en) * 1996-11-27 1998-06-03 Sony Uk Ltd Storage and transmission of one-bit data
GB2319930B (en) * 1996-11-27 2001-05-16 Sony Uk Ltd Storage and transmission of one-bit data
US6970753B2 (en) 1996-11-27 2005-11-29 Sony Corporation Storage and transmission of one-bit data

Also Published As

Publication number Publication date
SE378497B (en) 1975-09-01
DE2046964B2 (en) 1973-02-15
FR2107886B1 (en) 1975-07-18
CH529489A (en) 1972-10-15
BE772984A (en) 1972-03-23
NL7112830A (en) 1972-03-27
FR2107886A1 (en) 1972-05-12
DE2046964A1 (en) 1972-03-30

Similar Documents

Publication Publication Date Title
GB1448114A (en) Test set controlled by a remotely positioned digital computer
GB1493899A (en) Series closed loop transmission system
EP0335424A3 (en) Improved parity checking apparatus
GB936419A (en) Method and apparatus for data transmission
GB926688A (en) Signalling system
GB982220A (en) Asymmetrical d.c.-signalling method
ES8601613A1 (en) Test set.
GB1370247A (en) System for determining the type and location of trouble during the transmission of data signals
GB1329883A (en) Synchronous transmission systems
US3603739A (en) Digital transmission system employing identifiable marker streams on pulses to fill all idle channels
GB1296406A (en)
US3916381A (en) Loop arrangement to test a remote subscriber{3 s drop from a central office via a PCM subscriber carrier system
GB1457929A (en) Data transmissions system
JPS5585156A (en) Protective unit of transmission system
US2216730A (en) Measuring device
GB1153671A (en) Conference Circuits
GB1409293A (en) Signal transmission systems
GB1024662A (en) Improvements in or relating to electrical signalling systems
SU886299A1 (en) Device for converting input binary signals
FR2320014A1 (en) Appts to test condition of electrical service line - has resistance element connected across line to present predetermined impedance
EP0044098A1 (en) System for testing a modem
SU911715A1 (en) Device for detecting distortions in pulse trains
SU1496012A1 (en) Converter of testing combinations
SE7509044L (en) DATA COMMUNICATION SYSTEM
GB1115865A (en) Signalling system

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee