NO146077C - AA WIRELESS CLUTCH DEVICE AND LOCATE ERRORS IN A TRANSMISSION CODE MODULATED SIGNALS TRANSMISSION SYSTEM - Google Patents

AA WIRELESS CLUTCH DEVICE AND LOCATE ERRORS IN A TRANSMISSION CODE MODULATED SIGNALS TRANSMISSION SYSTEM

Info

Publication number
NO146077C
NO146077C NO794108A NO794108A NO146077C NO 146077 C NO146077 C NO 146077C NO 794108 A NO794108 A NO 794108A NO 794108 A NO794108 A NO 794108A NO 146077 C NO146077 C NO 146077C
Authority
NO
Norway
Prior art keywords
pass filter
transmission
modulated signals
signal path
wireless
Prior art date
Application number
NO794108A
Other languages
Norwegian (no)
Other versions
NO794108L (en
NO146077B (en
Inventor
Hans Georg Haerle
Josef Doemer
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 NO794108L publication Critical patent/NO794108L/en
Publication of NO146077B publication Critical patent/NO146077B/en
Publication of NO146077C publication Critical patent/NO146077C/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/40—Artificial lines; Networks simulating a line of certain length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Mechanical Operated Clutches (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Dc Digital Transmission (AREA)
  • Locating Faults (AREA)
  • Networks Using Active Elements (AREA)

Abstract

1. Circuit arrangement for the determination and location of faults in a transmission system, which has two transmission directions for pulse-code-modulated signals with intermediate stations which are to be checked and which for each transmission direction respectively contain an automatic, active attenuation equalizer and a preliminary equalizing stage which is connected preceding the equalizer in the signal path, characterized in that the preliminary equalizing stage is designed as high-pass filter (F1), that in the signal path, the attenuation equalizer (D) is followed by an active compensation low-pass filter (F2) which is so contrived that the product of the transmission functions of the high-pass filter (F1) and of the compensation low-pass filter (F2) is a constant, and that during the fault-locating operation, in the locating signal path, the attenuation equalizer (D) is preceded, via a second input, by an auxiliary low-pass filter (F3) which is so contrived that together with the compensation low-pass filter (F2) an equivalent network corresponding to a medium length cable is formed.
NO794108A 1978-12-29 1979-12-17 AA WIRELESS CLUTCH DEVICE AND LOCATE ERRORS IN A TRANSMISSION CODE MODULATED SIGNALS TRANSMISSION SYSTEM NO146077C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2856679A DE2856679C3 (en) 1978-12-29 1978-12-29 Circuit arrangement for determining and locating errors in a transmission system for pulse code modulated signals

Publications (3)

Publication Number Publication Date
NO794108L NO794108L (en) 1980-07-01
NO146077B NO146077B (en) 1982-04-13
NO146077C true NO146077C (en) 1982-08-11

Family

ID=6058676

Family Applications (1)

Application Number Title Priority Date Filing Date
NO794108A NO146077C (en) 1978-12-29 1979-12-17 AA WIRELESS CLUTCH DEVICE AND LOCATE ERRORS IN A TRANSMISSION CODE MODULATED SIGNALS TRANSMISSION SYSTEM

Country Status (4)

Country Link
EP (1) EP0012977B1 (en)
AT (1) ATE565T1 (en)
DE (1) DE2856679C3 (en)
NO (1) NO146077C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635582A1 (en) * 1986-10-20 1988-04-21 Hoechst Ag METHOD FOR PURIFYING N-ACYL ASPARTAM

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796971A (en) * 1971-10-21 1974-03-12 S Sherman Low-pass non-linear filter
DE2318246C3 (en) * 1973-04-11 1975-10-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Automatic active attenuation equalizer
DE2358272C2 (en) * 1973-11-22 1975-12-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for determining errors in a message transmission system for pulse code modulation

Also Published As

Publication number Publication date
DE2856679B2 (en) 1981-05-07
EP0012977A1 (en) 1980-07-09
EP0012977B1 (en) 1982-01-13
NO794108L (en) 1980-07-01
NO146077B (en) 1982-04-13
DE2856679C3 (en) 1982-02-11
DE2856679A1 (en) 1980-07-03
ATE565T1 (en) 1982-01-15

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