JPS6410181A - Delay sweeping device - Google Patents

Delay sweeping device

Info

Publication number
JPS6410181A
JPS6410181A JP16666887A JP16666887A JPS6410181A JP S6410181 A JPS6410181 A JP S6410181A JP 16666887 A JP16666887 A JP 16666887A JP 16666887 A JP16666887 A JP 16666887A JP S6410181 A JPS6410181 A JP S6410181A
Authority
JP
Japan
Prior art keywords
delay
converter
correction coefficient
sweeping device
delay time
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
JP16666887A
Other languages
Japanese (ja)
Other versions
JPH0614068B2 (en
Inventor
Hideho Tanaka
Tatsumi Suzuki
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP16666887A priority Critical patent/JPH0614068B2/en
Publication of JPS6410181A publication Critical patent/JPS6410181A/en
Publication of JPH0614068B2 publication Critical patent/JPH0614068B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Measurement Of Unknown Time Intervals (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE:To realize a high-accuracy delay sweeping device for an oscilloscope by using an inexpensive D/A converter without being affected by temperature variation, by correcting the D/A converter which is the main factor of the error of a delay time difference automatically right before measuring operation. CONSTITUTION:Such a correction coefficient that the output of a comparator 28 for calibration is zero is found by a calculation processing circuit 36 and stored in a RAM 37 prior to measurement using the delay sweeping device. When the 1st delay time and 2nd delay time from the start point of a main sweep waveform to the start point of a 1st delay sweep waveform outputted according to the output of a 1st D/A converter 31A, corrected data which generate no error are applied to the 1st and 2nd D/A converters 31A and 31B through 1st and 2nd registers 32A and 32B according to the correction coefficient. This correction coefficient is plotted with many points in the dynamic ranges of the 1st and 2nd D/A converters 31A and 31B and then the accuracy of correction can be improved as it is demanded.
JP16666887A 1987-07-03 1987-07-03 Delayed sweep device Expired - Fee Related JPH0614068B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16666887A JPH0614068B2 (en) 1987-07-03 1987-07-03 Delayed sweep device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16666887A JPH0614068B2 (en) 1987-07-03 1987-07-03 Delayed sweep device

Publications (2)

Publication Number Publication Date
JPS6410181A true JPS6410181A (en) 1989-01-13
JPH0614068B2 JPH0614068B2 (en) 1994-02-23

Family

ID=15835513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16666887A Expired - Fee Related JPH0614068B2 (en) 1987-07-03 1987-07-03 Delayed sweep device

Country Status (1)

Country Link
JP (1) JPH0614068B2 (en)

Also Published As

Publication number Publication date
JPH0614068B2 (en) 1994-02-23

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees