信号发生器

And the design method of the virtual oscillograph and virtual signal generator is presented.

本文基于虚拟仪器的基本原理以及LabVIEW开发平台，介绍了利用LabVIEW开发第三方数据采集卡的具体方法，提出了虚拟示波器和虚拟信号发生器的设计方法

The design of a Sinusoidal Signal Generator program, program validation, code correctly.

详细说明：一种正弦信号发生器的设计方案，程序通过验证，代码正确。

Function Signal Generator a program that contains simulation map!

详细说明：函数信号发生器的一个程序，包含仿真图！

The composition and work principle,development of controlling software,implementation of main function of controlling program of the function generator automatic verification/calibration testing system based on VB6.0 are introduced.

详细介绍了基于VB6.0的函数信号发生器自动检定/校准测试系统的组成及工作原理、测控软件的开发设计、测控程序主要功能的实施。

An example in the virtual instrument-a random signal generator, consisting of PCI card and software, is also given.

文章还给出了一个在虚拟仪器中的应用———基于PCI总线的DDS任意信号发生器的实例。

ABSTRACT: The comprehensive survey present resistance, the electric capacity and the inductance reflectoscope reflector, are generally and the special function signal generating device ties up in the same place, mostly price expensive, the volume is big, is not suitable uses in needing to move the survey the situation and the field work.

综观现在的电阻，电容和电感测试仪，一般是和专门的函数信号发生器捆绑在一起，大多价格昂贵，体积较大，不适宜用于需要移动测量的场合和野外作业。

Our factory is established in 2004, the existing staff 80 people,workshop area 2000M2, has the production assembly line 3 and thespectrometer, the oscilloscope, the high frequency signal generator ,leaks the reflectoscope reflector, the pressure resistance

我们厂成立于2004年，现有员工80余人，厂房面积2000M2，拥有生产流水线3条及频谱仪、示波器、高频信号发生器、漏电测试仪、耐压测试仪、溢流焊机、LED灯具模拟测试仪等生产、检测设备。

Based on DDS technology of CNC signal generator of the design process, there are two languages.

详细说明：基于DDS技术的数控信号发生器的设计程序，也有两种语言。

Signal generator in the field of dynamic testing has an important role.

摘要信号发生器在动态测试领域有重要的作用。

In this paper, a kind of reconfigurable multi-channel DDS signal generator based on FPGA is introduced.

介绍了一种基于FPGA芯片实现的可重构DDS信号发生器。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。