本文应用虚拟仪器的原理，开发出一套经济实用的外置式虚拟信号测试仪的样机。
In this paper, a Outer virtual Instrument Measuring System consisting of signal acquisition unit and software package was developed according to the principle of virtual Instrument.
在许多测试仪中需要用标准的正弦信号检测一些物理量。
In many tester using standard need in the sine signal detection some physical quantities.
由自检信号产生电路产生自检信号实现光栅自动测试仪的自检功能。
Signals of self test realize the function of self test of the grating auto testing instrument.
文中重点阐述了测试仪的信号发生、数据采集及液晶显示技术。
The introduction of the techniques such as signal generation, data acquisition and LCD is the key points in this paper.
采用比对测量和模拟发电机信号输出的方法，使新研制的便携式P MU现场测试仪能对现场的PMU进行校核。
By using comparing measurement and simulating power generator signal output, the new developed portable PMU field measuring instrument can calibrate the field PMUs.
给出了以AT89C52单片机为核心的谷物水分测试仪的硬件组成，并详细介绍了信号处理和测量方法。
The hardware structure of grain moisture measuring instrument was developed based on AT89C52 single-chip computer.
工控机完成测试仪自检、信号转接板和测试流程控制、数据库管理、结果显示和存储等。
The self-test of intelligent device, signal interface and test flow control, database management, and result display and storage is finished with industry computer.
方法：自制输入阻抗测试仪，采用金属外壳可屏蔽部分外部的干扰信号；
Methods An input circuit impedance tester with metal shells that could shield part of the external interference signal was made;
本论文以常规模式和模式S询问信号的理论为背景，重点阐述了测试仪的设计方案及实现。
The thesis is based on the interrogating theory of the normal mode and mode S and focuses on the design and implementation of the tester.
典型的射频微波类测试仪表：信号源、频谱分析仪、网络分析仪、功率计、接收机等等；
Typical RF & uW instruments: signal generators, spectrum analyzers, network analyzers, power meters, receivers and so on;
某型静电电位动态测试仪可对静电导体和人体产生的静电电位进行实时的采集并输出模拟信号。
The dynamic electric potential tester of static is extensively applied to the test of electrostatic potential, such as human body, etc.
通过超声波测试仪发射和接收换能器信号，输出的电压信号送入计算机的A/D卡。
We emit and receive signals fromtransducers by using Measuring Ultrasound Equipment, and then put continent voltages to the A/D card in the computer.
文章介绍了一种应用于电厂输煤系统的数字式粉尘测试仪的设计原理，并着重阐述了测试仪中的信号处理系统。
This paper introduces the principle of a digital dust measuring instrument and expounds the signal management system of the instrument.
N9000A CXA信号分析仪是x系列测试仪器中的一员，它是综合利用仪器、测量和软件进行信号分析的演进方法。
CXA N9000A signal analyzer is a member of the X series of test instruments, which is the comprehensive use of the instrument, measurement and software for signal analysis of the evolution method.
熟练使用信号源、示波器、频谱仪、阻抗分析仪和网络分析仪等常用射频测试仪器进行测试、评估和调试；
Be practiced in using of the common RF test and analyzing instruments, such as Signal Generator, Oscilloscope, Spectrum Analyzer , Impedance Analyzer and Net Analyzer;
熟练使用信号源、示波器、频谱仪、阻抗分析仪和网络分析仪等常用射频测试仪器进行测试、评估和调试；
Be practiced in using of the common RF test and analyzing instruments, such as Signal Generator, Oscilloscope, Spectrum Analyzer , Impedance Analyzer and Net Analyzer;
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