频率计

Digital cymometer whether one examine into signal digital measuring instrument of frequency with the decimal system digital display.

摘要数字频率计是一种用十进制数字显示被测信号频率的数字测量仪器。

The Cymometer CPLD to use frequency, cycle, pulse width and duty cycle measurement count.

该频率计利用CPLD来实现频率、周期、脉宽和占空比的测量计数。

This cymometer uses FPGA to realize the measuring countoffrequency、period、pulse width and occupy-empty ratio.

该频率计利用FPGA来实现频率、周期、脉宽和占空比的测量计数。

The digital Cymometer is one kind with the decimal digital demonstrated is measured the signalling frequency the numeral metering Equipment.

数字频率计是一种用十进制数字显示被测信号频率的数字测量仪器。

The1Hz~lMHz input measured pulse signals of the digital frequency meter can be used for measuring frequency, period, pulse width and duty ratio,etc.The test results stably display 3 seven-segment numeric tubes, and the measuring ranges may be switched over automatically. The measuring error is equal to or less than 0.1％.

该数字频率计的lHz～1MHz输入被测脉冲信号具有频率测量、周期测量、脉宽测量和占空比测量等多种用途；其测试结果由3只七段数码管稳定显示，测试量程可自动切换、测量误差小于等于0.1％。

The frequency test scheme of this cymometer is enumerative. In this system, vibratory circuit output a time signal of strobe to acquire the frequency of the geodesic signal by count the pulse after the geodesic signal is modulated.

该频率计采用计数式测频方案，由振荡电路产生标准闸门时间信号，对被测信号整形处理后进行脉冲计数直接得到被测信号的频率值。

The formulas from an interface relaxation equation for the calculation of specific relaxation time and capacitance dispersion frequency are related to the electrophysics parameters of the grain and grain boundary.

界面驰豫方程确定的特征驰豫时间和电容弥散频率计算式，与晶粒和晶界的电物理参数相关，弥散频率的计算值与实验结果定性相符。

The design of the frequency meter can be accurately measured in a frequency of 100MHz between Hz signal.

该设计的频率计能准确的测量频率在1Hz到100MHz之间的信号。

This article in summary frequency measurement principle and in method foundation main introduction based on EDA technology digital frequency meter design and realization process.

本文在简述频率测量原理和方法的基础上主要介绍基于EDA技术的数字频率计的设计与实现过程。

The digital frequency meter can be directly measured decimal to display a frequency measuring device.

本数字频率计是能够直接用十进制数字来显示被测信号频率的一种测量装置。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。