frequency meter

XP-2 Type Vibrating String Universal Frequency Meter

XP-2型弦式通用频率计

Design for a frequency meter for water level sensor

水位传感器专用频率计的设计

This paper has introduced the basic principle of designing digital frequency meter.

介绍了数字频率计设计的基本原理.

This system is composed by a temperature chamber, several switch groups, a PC computer, a high-resolution frequency meter, a frequency standard, a control system including a simulator and a controller, a human interface based on virtual instrument.

该开发系统由温控柜、多路开关组、PC机、高分辨率频率计、频率标准、控制系统、基于虚拟仪器的人机界面组成。

The wide of the match strobe gate is measured with high frequency pulses in frequency meter.

用频率计内部高频时钟测量匹配选通门宽度，计算被测信号频率。

This article in view of ordinary frequency meter existence reading difficult, measuring accuracy not higher shortcoming, proposed one usability strong the high accuracy numeral frequency meter control circuit system realization method which controls with the monolithic integrated circuit, has the broad application prospect.

针对普通频率计存在读数难、测量精度不高等缺点，提出了一种实用性较强的用单片机控制的高精度数字频率计控制电路系统的实现方法，具有广阔的应用前景。

This frequency meter only needs several resistances and electric capacities and clock crystal oscillating circuit for the microcontroller working outside, then it may realize the frequency measurement function.

该频率计只需外接几个阻容器件和供微控制器工作时钟的晶体振荡电路，就可实现频率测量功能。

Design of Wide Input Range and High-precision Frequency Meter

一种宽输入范围高精度频率计的设计