It is a reliable system with friendly interfaces , which carries out the test data ' s real - time sampling , analysis and handling , instantaneous graph saving , graph reoccurrence and exporting function etc . it can give the real - time and right results of tribology experiment 该系统具有稳定、可靠、操作界面友好的特点，并实现了数据的实时采样、实时分析处理、瞬间图形存储、图形再现、输出等功能，方便的对试验做出实时、量化的估计。
It analyses the principle and methods of waveform reconstruction of the data acquisition module under double a / d parallel time - interleaved real - time sampling mode and random sampling mode . it also illustrates the flow of the monitoring software and the application of fpga technology in this design 主要分析了双a / d分相数字化实时采样方式下和等效时间随机采样方式下采集模块的工作原理及波形重建的方法,并简单介绍了监控软件流程及fpga在本设计中的应用。
The task aims to develop system monitor program of the wdso ( wideband digitizing storage oscilloscope ) in which bandwidth is 100mhz , equivalent sampling frequency is 10ghz , real - time sampling frequency is 20mhz , resolution is 8bits . to get higher bandwidth , we take advantage of random sample and convert 课题“随机采样数字化示波器监控软件系统研究”的主要任务是研制开发被观测信号带宽100mhz ，随机采样频率10gsps ，实时采样20msps ,幅值分辨率为8位的随机采样数字示波器的软件系统监控程序。我们采用的是随机采样的方案，在低实时采样频率20msps下，获得高的重复性周期信号带宽。
The project is to develop the 100mhz wideband digital storage oscilloscope ( wdso ) ， typical performance character : input signal - 3db bandwidth is 100mhz , real time sampling frequency is 20msa / s , equivalent sampling frequency is 10gsa / s , resolution is 8bits , dual signal channel , and delicacy is 5mv 5v div per channel ， time sweep velocity is 2 . 5ns - - 5s div 。 so the project is provided with higher performance - to - price ratio , stronger competitive capacity in market and widest applied foreground at the area of wdso 本次课题的具体目标是实现100mhz带宽的数字存储示波器正样机的研制，具体主要性能指标达到最高实时采样率20msa / s 、等效采样率10gsa / s 、被观测信号3db模拟带宽达100mhz 、采样数字分辨率8bit ；双通道，幅值灵敏度： 5mv 5v div ，扫速2 . 5ns - - 5s div 。该方案具有较高的性价比，较强的市场竞争力和广阔的应用前景。
This paper has devised a plug - in data acquisition ( daq ) system based on isa bus and developed a real - time testing software with the platform of the graphic programming language - labview , which has test data ' s real - time sampling , analysis and processing , instantaneous plot saving , plot reoccurrence , data saving to disk and reading from disk functions and so on 本课题设计了基于isa总线的内插式数据采集( daq )系统，并以图形化高级语言labview为平台编制了虚拟仪器实时测试软件，实现了数据的实时采样、实时分析处理、瞬间图形存储、图形再现、数据存盘和读入等功能。
The advantage of the random sampling theory relative to the real time sampling theory is that it does have no use for high - powered hardware to support . so we can choose components freely . the difficulty is to ensure the randomicity , to apply the interpolate technology and to ensure the multiple of time extending 随机采样原理相对于实时采样原理的优点在于不需要高精度的、高性能的硬件支持，这对于器件的选用有很大的余地，难点在于随机性的保证和内插技术的应用和时间放大倍数的可确定度。
