JPS55686A - Test unit for subscriber call meter circuit - Google Patents

Test unit for subscriber call meter circuit

Info

Publication number
JPS55686A
JPS55686A JP5091479A JP5091479A JPS55686A JP S55686 A JPS55686 A JP S55686A JP 5091479 A JP5091479 A JP 5091479A JP 5091479 A JP5091479 A JP 5091479A JP S55686 A JPS55686 A JP S55686A
Authority
JP
Japan
Prior art keywords
circuit
subscriber
detected
detection part
call meter
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
JP5091479A
Other languages
Japanese (ja)
Other versions
JPS5820182B2 (en
Inventor
Isao Matsumoto
Eizo Tateyama
Shigeru Okazaki
Masakazu Hotta
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.)
Anritsu Corp
Nippon Telegraph and Telephone Corp
Takamisawa Electric Co Ltd
Original Assignee
Anritsu Corp
Nippon Telegraph and Telephone Corp
Takamisawa 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 Anritsu Corp, Nippon Telegraph and Telephone Corp, Takamisawa Electric Co Ltd filed Critical Anritsu Corp
Priority to JP5091479A priority Critical patent/JPS5820182B2/en
Publication of JPS55686A publication Critical patent/JPS55686A/en
Publication of JPS5820182B2 publication Critical patent/JPS5820182B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H04M3/248—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for metering arrangements or prepayment telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To obtain a subscriber call meter circuit test unit which is capable of a high-accuracy test for both the breaking and the contact of the subscriber circuit in which the subscriber relay and the subscriber call meter circuit are connected in series and with connection to the negative power source at the subscriber relay side and to the ground at the subscriber call meter circuit side respectively. CONSTITUTION:The test unit comprises the following parts: detection part 1 where the busy state of tested subscriber circuit 10 is detected via operation of the SBY key; reference equivalent circuit part 2; detection part A.3 provided in opposition to circuit 10; detection part B.4 provided in opposition to part 2; detection part C.5; detector A.6 which detects the difference of the voltage drop detected at part A.3 and B.4; detection part B.7 where the difference of the voltage drop is detected between the value detected at part A.3 and part B.4+C.5; decision display control part 8 where the difference is analyzed between the voltage drop detected at part A.6 and B.7 plus the decision of circuit 10, the display of the dicision result and the control of the test progress are given each; and power supply part 9 respectively.
JP5091479A 1979-04-26 1979-04-26 Subscriber frequency meter circuit tester Expired JPS5820182B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5091479A JPS5820182B2 (en) 1979-04-26 1979-04-26 Subscriber frequency meter circuit tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5091479A JPS5820182B2 (en) 1979-04-26 1979-04-26 Subscriber frequency meter circuit tester

Publications (2)

Publication Number Publication Date
JPS55686A true JPS55686A (en) 1980-01-07
JPS5820182B2 JPS5820182B2 (en) 1983-04-21

Family

ID=12872039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5091479A Expired JPS5820182B2 (en) 1979-04-26 1979-04-26 Subscriber frequency meter circuit tester

Country Status (1)

Country Link
JP (1) JPS5820182B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645343A (en) * 1981-11-11 1987-02-24 U.S. Philips Corporation Atomic resonance line source lamps and spectrophotometers for use with such lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645343A (en) * 1981-11-11 1987-02-24 U.S. Philips Corporation Atomic resonance line source lamps and spectrophotometers for use with such lamps

Also Published As

Publication number Publication date
JPS5820182B2 (en) 1983-04-21

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