示波器检定装置
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示波器是一种用途十分广泛的电子测量仪器。它能把肉眼看不见的电信号变换成看得见的图象，便于人们研究各种电现象的变化过程。模拟示波器利用狭窄的、由高速电子组成的电子束，打在涂有荧光物质的屏面上，产生细小的光点。形成被测信号随时间变化的波形曲线。数字示波器是数据采集，A/D转换，软件编程等一系列的技术制造出来的高性能示波器，可完成数据分析存储，波形保存处理等功能。示波器标准装置根据《JJG262-1996模拟示波器检定规程》和《JJF1057-1998 数字存储示波器校准规范》对示波器的脉冲幅度、时间扫描系数、垂直偏转系数、直流偏置、直流增益、周期、频带宽度等参数进行检测。本标准的技术指标包括：直流电压：±（1mV~200V）±0.025%+25uV；脉冲幅度：±（1mV~200V）±0.01%+25uV；上升时间：150ps±25ps；时标信号：1ns~55s ±2.5×10-7（时标脉冲前沿≤1ns）；稳幅正弦波：DC~3.2GHz±5.0%（k=2）
An oscilloscope is a widely used electronic measuring instrument. It converts electrical signals invisible to the naked eye into visible images, enabling people to study the changing processes of various electrical phenomena. An analog oscilloscope uses a narrow electron beam composed of high-speed electrons, which strikes a screen coated with fluorescent material to generate tiny light spots, forming a waveform curve of the measured signal varying with time. A digital oscilloscope is a high-performance oscilloscope manufactured using a series of technologies including data acquisition, A/D conversion, and software programming, and it can complete functions such as data analysis and storage, waveform saving and processing. The oscilloscope calibration standard apparatus detects parameters of oscilloscopes including pulse amplitude, time sweep coefficient, vertical deflection coefficient, DC bias, DC gain, period, and bandwidth in accordance with the *Verification Regulation of Analog Oscilloscopes (JJG262-1996)* and the *Calibration Specification for Digital Storage Oscilloscopes (JJF1057-1998)*. The technical indicators of this standard include: - DC voltage: ±(1mV~200V) ±0.025% +25μV; - Pulse amplitude: ±(1mV~200V) ±0.01% +25μV; - Rise time: 150ps ±25ps; - Time marker signal: 1ns~55s ±2.5×10^-7 (leading edge of time marker pulse ≤1ns); - Amplitude-stabilized sine wave: DC~3.2GHz ±5.0% (k=2)
