JPS5773411A - Announciator system - Google Patents

Announciator system

Info

Publication number
JPS5773411A
JPS5773411A JP55147593A JP14759380A JPS5773411A JP S5773411 A JPS5773411 A JP S5773411A JP 55147593 A JP55147593 A JP 55147593A JP 14759380 A JP14759380 A JP 14759380A JP S5773411 A JPS5773411 A JP S5773411A
Authority
JP
Japan
Prior art keywords
contact
ans
monitored
orignal
photocoupler
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
JP55147593A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6331839B2 (cs
Inventor
Takaya Koga
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55147593A priority Critical patent/JPS5773411A/ja
Publication of JPS5773411A publication Critical patent/JPS5773411A/ja
Publication of JPS6331839B2 publication Critical patent/JPS6331839B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Alarm Systems (AREA)
  • Emergency Protection Circuit Devices (AREA)
JP55147593A 1980-10-23 1980-10-23 Announciator system Granted JPS5773411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55147593A JPS5773411A (en) 1980-10-23 1980-10-23 Announciator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55147593A JPS5773411A (en) 1980-10-23 1980-10-23 Announciator system

Publications (2)

Publication Number Publication Date
JPS5773411A true JPS5773411A (en) 1982-05-08
JPS6331839B2 JPS6331839B2 (cs) 1988-06-27

Family

ID=15433852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55147593A Granted JPS5773411A (en) 1980-10-23 1980-10-23 Announciator system

Country Status (1)

Country Link
JP (1) JPS5773411A (cs)

Also Published As

Publication number Publication date
JPS6331839B2 (cs) 1988-06-27

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