JPS55132161A - Measuring method for margin of digital regenerative repeater - Google Patents

Measuring method for margin of digital regenerative repeater

Info

Publication number
JPS55132161A
JPS55132161A JP3931079A JP3931079A JPS55132161A JP S55132161 A JPS55132161 A JP S55132161A JP 3931079 A JP3931079 A JP 3931079A JP 3931079 A JP3931079 A JP 3931079A JP S55132161 A JPS55132161 A JP S55132161A
Authority
JP
Japan
Prior art keywords
repeater
margin
signal
main signal
error rate
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.)
Pending
Application number
JP3931079A
Other languages
Japanese (ja)
Inventor
Kiyoaki Kawai
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3931079A priority Critical patent/JPS55132161A/en
Publication of JPS55132161A publication Critical patent/JPS55132161A/en
Pending legal-status Critical Current

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
    • H04L1/245—Testing correct operation by using the properties of transmission codes
    • H04L1/247—Testing correct operation by using the properties of transmission codes three-level transmission codes, e.g. ternary

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To improve the accuracy of a repeater margin measurement by applying bipolar pulses of low density, superposed upon a main signal, to the transmission side of the transmission line of a digital regenerative repeater to be measured. CONSTITUTION:A signal generated by pulse pattern generator 6 is converted into main signal A by transmission line code converter 7. Bipolar pulse generator 8 generates as a disturbing wave bipolar pulses B of low density with long pulse repetitive time P to pulse width W, and coupler 4 sends signal C, superposed on main signal A, to the transmission terminal of transmission line 2. The amplitude of pulses B is varied and the error rate of the output regenerated signal of repeater 1 is repeatedly supervised by error rate measurer 5 to measure ratio S/X' of limit-value level X' of bipolar pulses B as level S of main signal A when regeneration comes into effect at less than the allowable error rate, thereby obtaining the margin of the repeater. This method exerts little influence on the operation of the peak value detecting circuit of the repeater, so that the accurate margin can be measured.
JP3931079A 1979-04-03 1979-04-03 Measuring method for margin of digital regenerative repeater Pending JPS55132161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3931079A JPS55132161A (en) 1979-04-03 1979-04-03 Measuring method for margin of digital regenerative repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3931079A JPS55132161A (en) 1979-04-03 1979-04-03 Measuring method for margin of digital regenerative repeater

Publications (1)

Publication Number Publication Date
JPS55132161A true JPS55132161A (en) 1980-10-14

Family

ID=12549533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3931079A Pending JPS55132161A (en) 1979-04-03 1979-04-03 Measuring method for margin of digital regenerative repeater

Country Status (1)

Country Link
JP (1) JPS55132161A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0447834A (en) * 1990-06-15 1992-02-18 Nec Corp Optical repeater
JP2009528791A (en) * 2006-03-24 2009-08-06 ジェネラル・インスツルメント・コーポレーション Apparatus, method, and computer-readable recording medium for determining combined power margin available for hybrid fiber optic coaxial cable network
US8837302B2 (en) 2012-04-27 2014-09-16 Motorola Mobility Llc Mapping a network fault
US8867371B2 (en) 2012-04-27 2014-10-21 Motorola Mobility Llc Estimating physical locations of network faults
US8868736B2 (en) 2012-04-27 2014-10-21 Motorola Mobility Llc Estimating a severity level of a network fault
US8937992B2 (en) 2011-08-30 2015-01-20 General Instrument Corporation Method and apparatus for updating equalization coefficients of adaptive pre-equalizers
US9003460B2 (en) 2012-04-27 2015-04-07 Google Technology Holdings LLC Network monitoring with estimation of network path to network element location
US9025469B2 (en) 2013-03-15 2015-05-05 Arris Technology, Inc. Method for estimating cable plant topology
US9042236B2 (en) 2013-03-15 2015-05-26 Arris Technology, Inc. Method using equalization data to determine defects in a cable plant
US9065731B2 (en) 2012-05-01 2015-06-23 Arris Technology, Inc. Ensure upstream channel quality measurement stability in an upstream channel bonding system using T4 timeout multiplier
US9088355B2 (en) 2006-03-24 2015-07-21 Arris Technology, Inc. Method and apparatus for determining the dynamic range of an optical link in an HFC network
US9113181B2 (en) 2011-12-13 2015-08-18 Arris Technology, Inc. Dynamic channel bonding partial service triggering
US9136943B2 (en) 2012-07-30 2015-09-15 Arris Technology, Inc. Method of characterizing impairments detected by equalization on a channel of a network
US9137164B2 (en) 2012-11-15 2015-09-15 Arris Technology, Inc. Upstream receiver integrity assessment for modem registration
US9197886B2 (en) 2013-03-13 2015-11-24 Arris Enterprises, Inc. Detecting plant degradation using peer-comparison
US9203639B2 (en) 2012-12-27 2015-12-01 Arris Technology, Inc. Dynamic load balancing under partial service conditions
US10477199B2 (en) 2013-03-15 2019-11-12 Arris Enterprises Llc Method for identifying and prioritizing fault location in a cable plant

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0447834A (en) * 1990-06-15 1992-02-18 Nec Corp Optical repeater
JP2009528791A (en) * 2006-03-24 2009-08-06 ジェネラル・インスツルメント・コーポレーション Apparatus, method, and computer-readable recording medium for determining combined power margin available for hybrid fiber optic coaxial cable network
JP4824781B2 (en) * 2006-03-24 2011-11-30 ジェネラル・インスツルメント・コーポレーション Apparatus, method, and computer-readable recording medium for determining combined power margin available for hybrid fiber optic coaxial cable network
US9088355B2 (en) 2006-03-24 2015-07-21 Arris Technology, Inc. Method and apparatus for determining the dynamic range of an optical link in an HFC network
US8937992B2 (en) 2011-08-30 2015-01-20 General Instrument Corporation Method and apparatus for updating equalization coefficients of adaptive pre-equalizers
US9113181B2 (en) 2011-12-13 2015-08-18 Arris Technology, Inc. Dynamic channel bonding partial service triggering
US8837302B2 (en) 2012-04-27 2014-09-16 Motorola Mobility Llc Mapping a network fault
US8867371B2 (en) 2012-04-27 2014-10-21 Motorola Mobility Llc Estimating physical locations of network faults
US8868736B2 (en) 2012-04-27 2014-10-21 Motorola Mobility Llc Estimating a severity level of a network fault
US9003460B2 (en) 2012-04-27 2015-04-07 Google Technology Holdings LLC Network monitoring with estimation of network path to network element location
US9065731B2 (en) 2012-05-01 2015-06-23 Arris Technology, Inc. Ensure upstream channel quality measurement stability in an upstream channel bonding system using T4 timeout multiplier
US9136943B2 (en) 2012-07-30 2015-09-15 Arris Technology, Inc. Method of characterizing impairments detected by equalization on a channel of a network
US9137164B2 (en) 2012-11-15 2015-09-15 Arris Technology, Inc. Upstream receiver integrity assessment for modem registration
US9203639B2 (en) 2012-12-27 2015-12-01 Arris Technology, Inc. Dynamic load balancing under partial service conditions
US10027588B2 (en) 2012-12-27 2018-07-17 Arris Enterprises Llc Dynamic load balancing under partial service conditions
US9197886B2 (en) 2013-03-13 2015-11-24 Arris Enterprises, Inc. Detecting plant degradation using peer-comparison
US9042236B2 (en) 2013-03-15 2015-05-26 Arris Technology, Inc. Method using equalization data to determine defects in a cable plant
US9025469B2 (en) 2013-03-15 2015-05-05 Arris Technology, Inc. Method for estimating cable plant topology
US9350618B2 (en) 2013-03-15 2016-05-24 Arris Enterprises, Inc. Estimation of network path and elements using geodata
US10477199B2 (en) 2013-03-15 2019-11-12 Arris Enterprises Llc Method for identifying and prioritizing fault location in a cable plant

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