JPS5734463A - Oscilloscope - Google Patents

Oscilloscope

Info

Publication number
JPS5734463A
JPS5734463A JP10926980A JP10926980A JPS5734463A JP S5734463 A JPS5734463 A JP S5734463A JP 10926980 A JP10926980 A JP 10926980A JP 10926980 A JP10926980 A JP 10926980A JP S5734463 A JPS5734463 A JP S5734463A
Authority
JP
Japan
Prior art keywords
luminance
illuminance
braun tube
scale
constant
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
JP10926980A
Other languages
Japanese (ja)
Inventor
Ichiro Takeuchi
Yoichi Miyamoto
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP10926980A priority Critical patent/JPS5734463A/en
Publication of JPS5734463A publication Critical patent/JPS5734463A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/26—Circuits for controlling the intensity of the electron beam or the colour of the display

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To take a picture of the waveform on the oscilloscope under the optimum conditions, by providing a scale illuminance adjusting function in a Braun tube luminance adjusting devie, and maintaining a constant ratio between the luminance of the Braun tube and illuminance of the scale. CONSTITUTION:The luminance of the Braun tube 1 is adjusted by the voltage of a Braun tube luminance adjusting device 2. The illuminance of the scale is adjusted by controlling the current supplied to a lamp 7 from a scale illuminance adjusting device 9 through a constant current source 6, when a switch 5 is at the position on the other side of the illustrated position. When the switch 5 is at the illustrated position, the adjusting voltage of the Braun tube luminance adjusting device 2 is divided by impedances 3 and 4 and applied to the constant current source 6. Thus, the current of the lamp 7 is controlled. In this constitution, the luminance of the Braun tube 1 and the illuminance of the lamp can be controlled by constant relationship at the same time, and the constant contrast can be maintained.
JP10926980A 1980-08-11 1980-08-11 Oscilloscope Pending JPS5734463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10926980A JPS5734463A (en) 1980-08-11 1980-08-11 Oscilloscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10926980A JPS5734463A (en) 1980-08-11 1980-08-11 Oscilloscope

Publications (1)

Publication Number Publication Date
JPS5734463A true JPS5734463A (en) 1982-02-24

Family

ID=14505881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10926980A Pending JPS5734463A (en) 1980-08-11 1980-08-11 Oscilloscope

Country Status (1)

Country Link
JP (1) JPS5734463A (en)

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