The frequency meter is not accurate. Please have it rectified.
频率表不准确，请把它效正。
In the picture above you can see the frequency meter, and the large wooden ammeter on the wall.
上面图片中可以看到频率计，和大木电表墙壁上。
Sound card frequency meter source code for on-line collection. when downloading use please respect.
声卡频率计源代码，为网上收集的。下载使用时，请尊重原创作者的版权。
This paper illustrates the general design of digital frequency meter based on FPGA/CPLD Technology.
简述了基于FPGA/CPLD技术的数字频率计的总体设计。
Experiment iv Cymometer experimental requirements: design of an effective place for the 4 decimal digital frequency meter.
实验四频率计实验要求：设计一个有效位为4位的十进制的数字频率计。
The digital frequency meter is a device which is one kind of using decimal system digital directly display the signal frequency.
数字频率计是直接用十进制数字显示被测信号频率的一种测量装置。
In the digital circuit, the digital frequency meter belongs to the sequence circuit, it mainly by has the memory function trigger constitution.
在数字电路中，数字频率计属于时序电路，它主要由具有记忆功能的触发器构成。
A new method of frequency measurement based on the theory of digital frequency meter is presented. The MCU AT89C51 is used for the center controller.
介绍了一种基于数字频率计原理，以at89 C5 1单片机为控制器件的新型频率测量方法。
The digital frequency meter to achieve the desired requirements of the variable-range measurement, measuring range 0.1Hz-9999MHz, accuracy up to 0.1Hz.
该数字频率计达到预期要求，实现了可变量程测量，测量范围0.1Hz—9999MHz，精度可达0。
Sound card oscilloscope software oscilloscope, signal generator, frequency meter, multimeter functions in the audio range can completely replace the equipment.
声卡示波器软件实现了示波器，信号发生器，频率计，万用表的功能，在音频范围内可完全替代上述仪器。
The paper introduces the technique feature and the operation principle of chip CS5460A, and its application in high-accuracy power frequency voltage, current, power, power factor, frequency meter.
本文介绍了CS5460 A芯片的特点、工作原理及其在高精度工频电压、电流、功率、功率因数、频率表中的应用。
This article proposes with designs frequency meter's method based on at89C51 monolithic integrated circuit to be possible to obtain the precision to be high, the frequency range wide frequency meter.
本文提出的用基于AT 89 C51单片机设计频率计的方法可获得精度较高、频率范围宽的频率计。
Typical smart meter designs include periodic transmission of current, phase, and frequency data from the user to the electricity distribution company.
典型的智能度量设计包括来用户端的电流、相位和频率数据向电力调配公司的周期传送。
As the frequency of the AC component increases, the DC meter response decreases, until at some frequency only the average input voltage will be displayed.
当交流分量的频率增加时，直流仪表的响应就会变得不够快，直到在某一频率时，仪表只能显示出输入电压的平均值。
If the input signal is anywhere in the frequency range of the detector, the meter will make a valid power measurement.
只要输入信号落在检测器的频率范围内，则功率计就能给出准确的的功率。
This article introduces the method of extending noise figure meter HP 8970a measurement frequency range.
本文介绍了扩展噪声系数表hp 8970a测量频率范围的方法。
It also involves the design method, principle of two-frequency laser gauge meter and the result of verifications of standard devices using the gauge.
并介绍了双频激光同轴量规计的设计方法、工作原理及利用它对标准件定标的情况。
An RF power meter has one major drawback: it cannot measure frequency, so it may give an "approved" rating to a defective mobile telephone, as in the following two examples.
功率计的一个主要缺点是：不能测量频率，因此它会对一个有缺陷的手机给出“通过”，就像下面的两个例子。
The dynamic vibration information is gained from acceleration meter, and then by FFT analysis, the frequency information of vibration is used as the training specimen of neural network.
首先利用测振传感器获得转子的振动信息，然后用FFT分析，将振动信号的频谱分析作为神经网络的训练样本。
Research results show that vortex frequency estimation method based on HHT can estimate vortex signal frequency accurately, and increase the antiinterference ability of the vortex flow meter.
研究结果表明，基于HHT的涡街频率估计方法，可以精确估计涡街信号频率并提高涡街流量计的抗干扰能力。
This added voltage is mainly power line frequency and its effect on the voltmeter reading will depend upon the normal-mode rejection capability of the meter.
这个相加的电压主要为电源频率的信号，其对于电压表读数的影响决定于电压表的串模抑制能力。
The ability of the RF power analyzer to measure power within specified frequency bands enables it to spot defects that an RF power meter cannot.
功率分析仪可在指定频段测量的能力使其能发现功率计发现不了的错误。
The method of analysis frequency table is using the meter of frequency table to test all kinds of frequency and then calculate the distortion of the wave.
频谱分析法是用频率分析仪测量各次谐波的方法计算出波形失真度，但采用此种方法的仪器价格较昂贵。
Due to need for the development of portable motor meter assembly checking box, a kind of frequency signal generator is designed, detailed design principle and idea are discussed.
针对“便携式汽车仪表总成校验箱”系统的开发需要，设计了一种用于汽车电子转速表、里程表校验的频率信号发生器，论述了电路的设计原理和设计思想。
And introduce a key design of high precision and width frequency area of phase meter.
并介绍一种高精度、宽频率范围的相位表的关键设计。
The influence of frequency deviate or harmonics to the traditional kilowatt hour meter of electromagnetic induction type is analysed in the paper.
分析了电力系统频率偏移和谐波对传统感应电能表误差特性的影响。
The influence of frequency deviate or harmonics to the traditional kilowatt hour meter of electromagnetic induction type is analysed in the paper.
分析了电力系统频率偏移和谐波对传统感应电能表误差特性的影响。
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