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JPS5682460A - Cable tester - Google Patents

Cable tester

Info

Publication number
JPS5682460A
JPS5682460A JP15924879A JP15924879A JPS5682460A JP S5682460 A JPS5682460 A JP S5682460A JP 15924879 A JP15924879 A JP 15924879A JP 15924879 A JP15924879 A JP 15924879A JP S5682460 A JPS5682460 A JP S5682460A
Authority
JP
Japan
Prior art keywords
circuit
pulse pattern
pulses
counter
generator
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
JP15924879A
Other languages
Japanese (ja)
Other versions
JPS6334664B2 (en
Inventor
Kenya Fuchigami
Hideo Yamamoto
Makoto Omura
Shinya Kojima
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 JP15924879A priority Critical patent/JPS5682460A/en
Publication of JPS5682460A publication Critical patent/JPS5682460A/en
Publication of JPS6334664B2 publication Critical patent/JPS6334664B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Detection And Prevention Of Errors In Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE: To simulate the housing state of an actual transmission system, perform circuit testing of high reliability and quantitatively grasp transmission capacity by inputting pulses to plural circuits, and deliberately causing code errors in one circuit.
CONSTITUTION: This tester is provided with a pulse pattern generator 4 for inputting the pulses of variable crest values at one end of an arbitrary circuit in a cable 1 as a test circuit 2, a pulse pattern generator 4' which inputs the pulses of a fixed crest value to each of the other single or plural circuits as induction circuits 3 for the test circuit, an amplifier 5 which compensates the transmission loss component which has been transmitted at the other end of the circuit 2, and a counter 6 which discriminates the presence or not of the amplified output and counts the errors of codes through comparison of the transmitted pulse pattern and received pulse pattern of the circuit 2. The counter 6 has the function of controlling the output pulse crest value of the generator 4 so as to create the state of causing code errors at the measuring or the function of controlling the discrimination level of the counter itself.
COPYRIGHT: (C)1981,JPO&Japio
JP15924879A 1979-12-10 1979-12-10 Cable tester Granted JPS5682460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15924879A JPS5682460A (en) 1979-12-10 1979-12-10 Cable tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15924879A JPS5682460A (en) 1979-12-10 1979-12-10 Cable tester

Publications (2)

Publication Number Publication Date
JPS5682460A true JPS5682460A (en) 1981-07-06
JPS6334664B2 JPS6334664B2 (en) 1988-07-12

Family

ID=15689585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15924879A Granted JPS5682460A (en) 1979-12-10 1979-12-10 Cable tester

Country Status (1)

Country Link
JP (1) JPS5682460A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007064707A (en) * 2005-08-30 2007-03-15 Hitachi Ltd Characteristic evaluation apparatus and characteristic evaluation method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54152802A (en) * 1978-05-23 1979-12-01 Fujitsu Ltd Error rate supervisory system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54152802A (en) * 1978-05-23 1979-12-01 Fujitsu Ltd Error rate supervisory system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007064707A (en) * 2005-08-30 2007-03-15 Hitachi Ltd Characteristic evaluation apparatus and characteristic evaluation method

Also Published As

Publication number Publication date
JPS6334664B2 (en) 1988-07-12

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