JPS5493903A - Test system for backup circuit - Google Patents

Test system for backup circuit

Info

Publication number
JPS5493903A
JPS5493903A JP22578A JP22578A JPS5493903A JP S5493903 A JPS5493903 A JP S5493903A JP 22578 A JP22578 A JP 22578A JP 22578 A JP22578 A JP 22578A JP S5493903 A JPS5493903 A JP S5493903A
Authority
JP
Japan
Prior art keywords
backup circuit
data
circuit
backup
progress
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
JP22578A
Other languages
Japanese (ja)
Other versions
JPS5921234B2 (en
Inventor
Hitoshi Suzuki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53000225A priority Critical patent/JPS5921234B2/en
Publication of JPS5493903A publication Critical patent/JPS5493903A/en
Publication of JPS5921234B2 publication Critical patent/JPS5921234B2/en
Expired 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
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Abstract

PURPOSE:To secure a simple and effective test for the backup circuit by transferring the data of the pattern common to each control unit which is connected via the backup circuit in a fixed sequence and also checking the progress of the transfer. CONSTITUTION:The mutual connection is given to control unit 2 and 3 via backup circuit 8. In this mutual backup system, the data of the common pattern is transferred (10, 11) between unit 2 and 3 via circuit 8 and in a fixed sequence under the premise that the data is received from the control units of the partner side within a fixed time. In this case, means 15 is provided to check the contents of the received data as well as the sequence progress. Based on the checking result, the state of the backup circuit is judged.
JP53000225A 1978-01-06 1978-01-06 Backup line test method Expired JPS5921234B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53000225A JPS5921234B2 (en) 1978-01-06 1978-01-06 Backup line test method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53000225A JPS5921234B2 (en) 1978-01-06 1978-01-06 Backup line test method

Publications (2)

Publication Number Publication Date
JPS5493903A true JPS5493903A (en) 1979-07-25
JPS5921234B2 JPS5921234B2 (en) 1984-05-18

Family

ID=11468010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53000225A Expired JPS5921234B2 (en) 1978-01-06 1978-01-06 Backup line test method

Country Status (1)

Country Link
JP (1) JPS5921234B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60116234A (en) * 1983-11-28 1985-06-22 Nec Corp Communication line switching system
JPS61131932A (en) * 1984-11-30 1986-06-19 Fujitsu Ltd Line restoration monitor system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0542747Y2 (en) * 1988-01-22 1993-10-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60116234A (en) * 1983-11-28 1985-06-22 Nec Corp Communication line switching system
JPS61131932A (en) * 1984-11-30 1986-06-19 Fujitsu Ltd Line restoration monitor system

Also Published As

Publication number Publication date
JPS5921234B2 (en) 1984-05-18

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