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Method for calibrating digital oscilloscope

A technology for digital oscilloscopes and calibration methods, which is applied to instruments, measuring devices, and measuring electrical variables, etc., and can solve problems such as expensive calibration costs and unstable calibration results

Inactive Publication Date: 2010-02-24
秦轲 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, it is necessary to provide a digital oscilloscope calibration method that can reduce calibration costs and have stable calibration results for the problems of expensive calibration of traditional digital oscilloscopes and unstable calibration results

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0012] The digital oscilloscope calibration method includes the following steps:

[0013] S1: input a standard signal;

[0014] S2: Determine whether calibration is required, if yes, execute S3, if not, execute S4;

[0015] S3: adjust the corresponding parameters, and then execute S2;

[0016] S4: end.

[0017] The specific items that need to be calibrated include random calibration, real-time shake calibration, horizontal center calibration, trigger calibration, amplitude calibration, and clock accuracy calibration. Specific descriptions are given below:

[0018] Random calibration consists of the following steps:

[0019] S101: Input a sinusoidal signal with a bandwidth frequency;

[0020] S102: Determine whether there is a glitch in the waveform displayed on the display screen, if yes, execute S103, if not, execute S104;

[0021] S103: adjust the waveform phase difference, and then execute S102;

[0022] S104: end.

[0023] During the specific operation, the user ca...

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PUM

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Abstract

The invention relates to a method for calibrating a digital oscilloscope, comprising the following steps: S1: inputting a standard signal; S2: judging whether calibration is required, if so, performing S3, otherwise, performing S4; S3: adjusting corresponding parameters and performing S2; and S4: terminating. The above method for calibrating digital oscilloscopes needs no special calibrating instruments, and can finish various calibration processes only by inputting a standard signal and adjusting corresponding parameters, thus lowering calibration cost greatly. A user can use the above calibrating method for calibrating digital oscilloscopes at any time, therefore, the stable degree of the calibration results can be ensured.

Description

technical field [0001] The invention relates to a digital oscilloscope calibration method. Background technique [0002] Generally, digital oscilloscopes must be calibrated before leaving the factory. In the current production calibration of digital oscilloscopes, special calibration instruments and calibration programs are usually used for automatic calibration. However, the cost of calibrating the instrument is very expensive, and the calibration results are also unstable. This is because the calibration is carried out at room temperature. After the user gets the oscilloscope, when the ambient temperature is quite different from the temperature at the time of calibration, or when the temperature changes greatly during the working process, the working condition of the oscilloscope will be different. Unstable or abnormal. Contents of the invention [0003] In view of this, it is necessary to provide a digital oscilloscope calibration method that can reduce the calibratio...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 秦轲邵海涛赵亚锋
Owner 秦轲
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