JPS5726935A - Measuring device for transmission quality - Google Patents

Measuring device for transmission quality

Info

Publication number
JPS5726935A
JPS5726935A JP17583880A JP17583880A JPS5726935A JP S5726935 A JPS5726935 A JP S5726935A JP 17583880 A JP17583880 A JP 17583880A JP 17583880 A JP17583880 A JP 17583880A JP S5726935 A JPS5726935 A JP S5726935A
Authority
JP
Japan
Prior art keywords
circuit
level
comparison
signal
transmission loss
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.)
Granted
Application number
JP17583880A
Other languages
Japanese (ja)
Other versions
JPS611947B2 (en
Inventor
Yuji Saito
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.)
Anritsu Corp
Original Assignee
Anritsu Corp
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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP17583880A priority Critical patent/JPS5726935A/en
Publication of JPS5726935A publication Critical patent/JPS5726935A/en
Publication of JPS611947B2 publication Critical patent/JPS611947B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/48—Testing attenuation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/301—Circuit arrangements at the subscriber's side of the line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To enable the measurement of transmission loss and status monitor time- serially, by monitoring the level variance and momentary interruption, through the comparison between a measuring signal and a scheduled threshold level, and by obtaining the transmission loss through the comparison of the measuring signal with the reference signal. CONSTITUTION:A measuring signal is rectified and the level is stored at a holding circuit 9. A measuring control circuit 13 monitors the state until an input is given to the circuit 9 and it is interrupted at the initial set, and if the interruption is detected, the circuit 13 gives instruction so that a holding signal is outputted to a comparison circuit 12 for the circuit 9 and a reference voltage is to it for a D/A conversion circuit 11. The circuit 11 outputs a compared output from the circuit 12 to an operation circuit 19, which subtracts the specified value from the comparison signal and stores the value as the result of transmission loss measurement. When the count of a time limit set circuit 14 is finished, a monitor circuit 15 compares the output from a level set circuit 16 with the preset threshold level to discriminate the level variance and momentary interruption.
JP17583880A 1980-12-15 1980-12-15 Measuring device for transmission quality Granted JPS5726935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17583880A JPS5726935A (en) 1980-12-15 1980-12-15 Measuring device for transmission quality

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17583880A JPS5726935A (en) 1980-12-15 1980-12-15 Measuring device for transmission quality

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50052565A Division JPS5818028B2 (en) 1975-05-02 1975-05-02 Densou Hinshitsusokutei Souchi

Publications (2)

Publication Number Publication Date
JPS5726935A true JPS5726935A (en) 1982-02-13
JPS611947B2 JPS611947B2 (en) 1986-01-21

Family

ID=16003093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17583880A Granted JPS5726935A (en) 1980-12-15 1980-12-15 Measuring device for transmission quality

Country Status (1)

Country Link
JP (1) JPS5726935A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63234747A (en) * 1987-03-24 1988-09-30 Mitsubishi Electric Corp Remote measuring method for transmission quality
EP0668677A1 (en) * 1994-02-18 1995-08-23 Leader Electronics Corp. Method and apparatus for evaluating the system margin of a digital transmission system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63234747A (en) * 1987-03-24 1988-09-30 Mitsubishi Electric Corp Remote measuring method for transmission quality
JPH0612898B2 (en) * 1987-03-24 1994-02-16 三菱電機株式会社 Telemetry method of transmission quality
EP0668677A1 (en) * 1994-02-18 1995-08-23 Leader Electronics Corp. Method and apparatus for evaluating the system margin of a digital transmission system
US5768312A (en) * 1994-02-18 1998-06-16 Leader Electronics Corp. Method and apparatus for evaluating digital transmission systems

Also Published As

Publication number Publication date
JPS611947B2 (en) 1986-01-21

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