JPS55110444A - Failure detection circuit - Google Patents

Failure detection circuit

Info

Publication number
JPS55110444A
JPS55110444A JP1718479A JP1718479A JPS55110444A JP S55110444 A JPS55110444 A JP S55110444A JP 1718479 A JP1718479 A JP 1718479A JP 1718479 A JP1718479 A JP 1718479A JP S55110444 A JPS55110444 A JP S55110444A
Authority
JP
Japan
Prior art keywords
signal
fed
transmission system
detection value
average power
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
JP1718479A
Other languages
Japanese (ja)
Inventor
Hiroshi Seguchi
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 JP1718479A priority Critical patent/JPS55110444A/en
Publication of JPS55110444A publication Critical patent/JPS55110444A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H04B17/17—Detection of non-compliance or faulty performance, e.g. response deviations

Landscapes

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

Abstract

PURPOSE:To ensure to detect the failure in transmission system, by obtaining the ratio of the detection value of signal power at the output side of transmission system to the reference value in response to the average power of transmission signal at input side at the time point, and comparing the ratio with a given reference value. CONSTITUTION:The signal Pi from the input terminal I is fed to the transmission system 1, it is fed to the input detector 5, and the detection value D is outputted through the detection of the signal Pi. This detection value D is fed to the reference unit 3' via the virtual transmitter 6 to detect the change in the average power of the detection value D inputted and the DC output B is fed to the discriminator 4' as the reference value. Further, the detection value A detecting the output of the transmission system 1 with the detector 2 is fed to the discriminator 4' to perform the comparison with the reference value in response to the average power of the transmission signal. Even under the signal conditions in which the average power of the transmission signal varies, the propriety of the transmission system 1 is judged and the control signal C is fed to the transmission system 1 in case of failure.
JP1718479A 1979-02-19 1979-02-19 Failure detection circuit Pending JPS55110444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1718479A JPS55110444A (en) 1979-02-19 1979-02-19 Failure detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1718479A JPS55110444A (en) 1979-02-19 1979-02-19 Failure detection circuit

Publications (1)

Publication Number Publication Date
JPS55110444A true JPS55110444A (en) 1980-08-25

Family

ID=11936850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1718479A Pending JPS55110444A (en) 1979-02-19 1979-02-19 Failure detection circuit

Country Status (1)

Country Link
JP (1) JPS55110444A (en)

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