JPS5627593A - Check system - Google Patents

Check system

Info

Publication number
JPS5627593A
JPS5627593A JP10342879A JP10342879A JPS5627593A JP S5627593 A JPS5627593 A JP S5627593A JP 10342879 A JP10342879 A JP 10342879A JP 10342879 A JP10342879 A JP 10342879A JP S5627593 A JPS5627593 A JP S5627593A
Authority
JP
Japan
Prior art keywords
check
earth
checking circuit
circuit
driver
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
JP10342879A
Other languages
Japanese (ja)
Other versions
JPS617077B2 (en
Inventor
Hiroshi Ozawa
Kiyoaki Nakayama
Yukio Uchida
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10342879A priority Critical patent/JPS5627593A/en
Publication of JPS5627593A publication Critical patent/JPS5627593A/en
Publication of JPS617077B2 publication Critical patent/JPS617077B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
    • H04Q1/22—Automatic arrangements
    • H04Q1/24—Automatic arrangements for connection devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To economize a check system by saving a checking circuit by using one checking circuit for an earth check and on/off check. CONSTITUTION:As for earth checking circuit GD and switch-driver on/off checking circuit SWD, their input levels to be checked are equal because of the earth level or no-earth level. Further, since an on/off check on switch driver SW-DR is made after an earth check on driving line DL of path selection relay PSR, two checks differ in time and those checking circuit are never used simultaneously. Therefore, circuit GD makes a logical judgement by an earth input and when the result of the earth check is OK, the controller drives mercury relay TR to change its contact tr deg. over. Consequently, driver SW-DR is connected to the input of circuit GD by switching to make the on/off check on SW-DR.
JP10342879A 1979-08-14 1979-08-14 Check system Granted JPS5627593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10342879A JPS5627593A (en) 1979-08-14 1979-08-14 Check system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10342879A JPS5627593A (en) 1979-08-14 1979-08-14 Check system

Publications (2)

Publication Number Publication Date
JPS5627593A true JPS5627593A (en) 1981-03-17
JPS617077B2 JPS617077B2 (en) 1986-03-04

Family

ID=14353759

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10342879A Granted JPS5627593A (en) 1979-08-14 1979-08-14 Check system

Country Status (1)

Country Link
JP (1) JPS5627593A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6083395A (en) * 1983-10-11 1985-05-11 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Method of adjusting surface of dielectric substrate for electrolessly plating
JPS60180191A (en) * 1984-02-27 1985-09-13 日立化成工業株式会社 Method of producing circuit board
JPS61256689A (en) * 1985-05-06 1986-11-14 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Substrate preprocessing for attaching non-electric field metal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6083395A (en) * 1983-10-11 1985-05-11 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Method of adjusting surface of dielectric substrate for electrolessly plating
JPS60180191A (en) * 1984-02-27 1985-09-13 日立化成工業株式会社 Method of producing circuit board
JPS61256689A (en) * 1985-05-06 1986-11-14 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Substrate preprocessing for attaching non-electric field metal

Also Published As

Publication number Publication date
JPS617077B2 (en) 1986-03-04

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