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JPS56148067A - Measuring circuit for coder characteristic - Google Patents

Measuring circuit for coder characteristic

Info

Publication number
JPS56148067A
JPS56148067A JP5112980A JP5112980A JPS56148067A JP S56148067 A JPS56148067 A JP S56148067A JP 5112980 A JP5112980 A JP 5112980A JP 5112980 A JP5112980 A JP 5112980A JP S56148067 A JPS56148067 A JP S56148067A
Authority
JP
Japan
Prior art keywords
coder
input
circuit
sine wave
output
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.)
Pending
Application number
JP5112980A
Other languages
Japanese (ja)
Inventor
Masao Yamazawa
Hirohisa Karibe
Toshihiko Matsumura
Hirokazu Fukui
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 JP5112980A priority Critical patent/JPS56148067A/en
Publication of JPS56148067A publication Critical patent/JPS56148067A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

PURPOSE:To make it possible to measure the input and output characteristic of the coder which does not show any response to D.C. input, by measuring the input and output characteristics of the coder employing optional input signal such as a sine wave having a specified frequency. CONSTITUTION:A coder to be measured 12 samples the output from a sine wave generator 11 in a preset period, and operates AD conversion. A phase detector circuit 13 detects the phase of sine wave signal from the generator per time of the above said sampling. A level detector circuit 14 determines the instantaneous value of amplitude of the sine wave by the information with reference of phase position from the phase detector circuit 13, and outputs as digital signal. A memory circuit 15 stores digital outputs from the coder 12 and the circuit 14 periodically at the same time as the above sampling. When sufficient amount of data are stored in the memory circuit 15, a treatment circuit 16 can treat the two groups of data stored with their correspondency, thereby obtaining relation between the input and the output.
JP5112980A 1980-04-18 1980-04-18 Measuring circuit for coder characteristic Pending JPS56148067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5112980A JPS56148067A (en) 1980-04-18 1980-04-18 Measuring circuit for coder characteristic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5112980A JPS56148067A (en) 1980-04-18 1980-04-18 Measuring circuit for coder characteristic

Publications (1)

Publication Number Publication Date
JPS56148067A true JPS56148067A (en) 1981-11-17

Family

ID=12878193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5112980A Pending JPS56148067A (en) 1980-04-18 1980-04-18 Measuring circuit for coder characteristic

Country Status (1)

Country Link
JP (1) JPS56148067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002053280A (en) * 2000-08-09 2002-02-19 Mitsubishi Electric Corp Elevator door control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002053280A (en) * 2000-08-09 2002-02-19 Mitsubishi Electric Corp Elevator door control

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