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JPS5718146A - Diagnostic system for synchronous operating circuit - Google Patents

Diagnostic system for synchronous operating circuit

Info

Publication number
JPS5718146A
JPS5718146A JP9293580A JP9293580A JPS5718146A JP S5718146 A JPS5718146 A JP S5718146A JP 9293580 A JP9293580 A JP 9293580A JP 9293580 A JP9293580 A JP 9293580A JP S5718146 A JPS5718146 A JP S5718146A
Authority
JP
Japan
Prior art keywords
operating circuit
synchronous operating
frame
case
synchronous
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
JP9293580A
Other languages
Japanese (ja)
Other versions
JPS6036667B2 (en
Inventor
Kenji Miyayasu
Takemi Arita
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55092935A priority Critical patent/JPS6036667B2/en
Publication of JPS5718146A publication Critical patent/JPS5718146A/en
Publication of JPS6036667B2 publication Critical patent/JPS6036667B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To easily obtain a changeover condition of a synchronizer and to raise a maintenance property, by detecting a fixed fault automatically in case when it has occurred in a synchronizer. CONSTITUTION:In a synchronous operating circuit which is used in common in order to secure the synchronization of each channel frame of a time-division multiplex circuit, various normal and abnormal frame patterns are supplied to its frame bit position in a specific channel. On the other hand, a correct answer data in case when a synchronous operation processing has been executed to said normal and abnormal frame patterns is stored in a memory in advance, a result of operation in case when said frame patterns have been supplied to the synchronous operating circuit is compared with the stored contents of said memory to said frame patterns, and whether the synchronous operating circuit is good or not is checked.
JP55092935A 1980-07-07 1980-07-07 Synchronous arithmetic circuit diagnostic device Expired JPS6036667B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55092935A JPS6036667B2 (en) 1980-07-07 1980-07-07 Synchronous arithmetic circuit diagnostic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55092935A JPS6036667B2 (en) 1980-07-07 1980-07-07 Synchronous arithmetic circuit diagnostic device

Publications (2)

Publication Number Publication Date
JPS5718146A true JPS5718146A (en) 1982-01-29
JPS6036667B2 JPS6036667B2 (en) 1985-08-21

Family

ID=14068335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55092935A Expired JPS6036667B2 (en) 1980-07-07 1980-07-07 Synchronous arithmetic circuit diagnostic device

Country Status (1)

Country Link
JP (1) JPS6036667B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198042A (en) * 1983-04-25 1984-11-09 Fujitsu Ltd Test method for synchronization signal reception protection circuit
US5472591A (en) * 1993-09-14 1995-12-05 Nippondenso Co., Ltd. Oxygen concentration detector having heat-treated support layer providing high responsivity endurance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198042A (en) * 1983-04-25 1984-11-09 Fujitsu Ltd Test method for synchronization signal reception protection circuit
JPH0218779B2 (en) * 1983-04-25 1990-04-26 Fujitsu Ltd
US5472591A (en) * 1993-09-14 1995-12-05 Nippondenso Co., Ltd. Oxygen concentration detector having heat-treated support layer providing high responsivity endurance

Also Published As

Publication number Publication date
JPS6036667B2 (en) 1985-08-21

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