An Automatic Range Measuring Method for Measuring Digital Storage Oscilloscope

Abstract

The invention discloses an automatic measuring range system and a measuring method used for measuring a digital storage oscilloscope. The system is characterized in that a front-end hardware circuit is connected with a control processor through an FPGA (field programmable gate array) data buffer, the control processor is respectively connected with the FPGA data buffer, a display and the front-end hardware circuit. The measuring method includes steps: S1, calculating and comparing data frames transmitted by the FPGA data buffer by the control processor to obtain two histogram arrays of peak-to-peak values and period values; S2, screening out a standard peak-to-peak value and a standard period value from the two histogram arrays of the peak-to-peak values and the period values obtained in S1 by the control processor; and S3, using the standard peak-to-peak value and the standard period value to determine voltage gears and time base gears, and controlling the front-end hardware circuit and displaying proper waveforms on the display screen. The oscilloscope automatically adjusts the voltage gears and the time base gears, time is saved, working efficiency is improved, and waveforms can be measured automatically and quickly.

Description

technical field [0001] The invention relates to digital oscilloscope technology, in particular to a processing technology for digital storage oscilloscopes when measuring changing waveforms, in particular to an automatic range measurement method for digital storage oscilloscopes. Background technique [0002] The use of an oscilloscope is relatively professional. Observing a waveform requires a series of adjustments, which is inconvenient to use, and customers who use an oscilloscope tend to make mistakes when using an oscilloscope to adjust parameters, or do not know how to adjust parameters. At present, the oscilloscope basically uses automatic setting to adjust the parameters for the waveform. The automatic setting takes a long time, generally takes 2-3 seconds, and when the waveform is automatically set many times, you must manually press the automatic setting button each time and set the oscilloscope. The measurement parameters are relatively slow in operation and respo...

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Problems solved by technology

[0003] For example, it is necessary to test multiple test points during production, and the voltage parameters or frequency parameters of each test point may be different. If the current method is used to test the test points, the voltage gear or time base gear must be manually adjusted. Or press the automatic setting, it will seriously affect the production efficiency,

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