JPS57118166A - Measuring apparatus for waveform width - Google Patents

Measuring apparatus for waveform width

Info

Publication number
JPS57118166A
JPS57118166A JP309381A JP309381A JPS57118166A JP S57118166 A JPS57118166 A JP S57118166A JP 309381 A JP309381 A JP 309381A JP 309381 A JP309381 A JP 309381A JP S57118166 A JPS57118166 A JP S57118166A
Authority
JP
Japan
Prior art keywords
waveform
level
observation
circuit
peak value
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
JP309381A
Other languages
Japanese (ja)
Inventor
Nobuo Kawai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP309381A priority Critical patent/JPS57118166A/en
Publication of JPS57118166A publication Critical patent/JPS57118166A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
    • G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
    • G01R29/0273—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values the pulse characteristic being duration, i.e. width (indicating that frequency of pulses is above or below a certain limit)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To measure a waveform width easily and accurately even if the peak value of a waveform to be measured is changed, by using an attenuated waveform, which is obtained by attenuating an observation waveform, together with the observation waveform. CONSTITUTION:An input observation waveform is attenuated to 1/2 by an attenuator 1 and has the peak value held by a peak hold circuit 2, and this peak value and the observation waveform are compared in level with each other by a comparator 3. Similarly, the output of a peak hold circuit 5 is inputted together with the observation waveform to a comparator 4, and they are compared in level with each other. Outputs of comparators 3 and 4 are inputted to an AND circuit 7 through an AND circuit 6; and only when the output of the AND circuit 6 is 1, clock pulses from a pulse generator 8 are supplied to a counter 9. Its count value is raised twice to obtain the half-amplitude level of a waveform to be measured. Thus, the threshold level is set to a prescribed level for the peak value of the observation waveform to measure the waveform width accurately.
JP309381A 1981-01-14 1981-01-14 Measuring apparatus for waveform width Pending JPS57118166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP309381A JPS57118166A (en) 1981-01-14 1981-01-14 Measuring apparatus for waveform width

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP309381A JPS57118166A (en) 1981-01-14 1981-01-14 Measuring apparatus for waveform width

Publications (1)

Publication Number Publication Date
JPS57118166A true JPS57118166A (en) 1982-07-22

Family

ID=11547721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP309381A Pending JPS57118166A (en) 1981-01-14 1981-01-14 Measuring apparatus for waveform width

Country Status (1)

Country Link
JP (1) JPS57118166A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02259475A (en) * 1989-03-31 1990-10-22 Yokogawa Electric Corp Half-width measuring circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02259475A (en) * 1989-03-31 1990-10-22 Yokogawa Electric Corp Half-width measuring circuit

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