信号电平

电缆电视系统信号电平变化综合分析

A Comprehensive Analysis About Signal Level Variation in Cable TV System

有线电视线路信号电平跳跃式变化原因试析

About Bouncing Changing Cause of the Signal Level in CATV Circuit

CAN总线上的信号电平与ISO标准规定的信号电平是基本相符的。

The signal voltage on CAN bus is the same as the signal voltage specified in the ISO regulations .

脉冲宽度调制（PWM）是一种对模拟信号电平进行数字编码的方法，利用PWM技术改变供电电压的占空比可以实现对电机转速的调节。

Pules-Width Modulation ( PWM ) is an digital coding method of analog signal . In this technology we can use a duty cycle to change the motor speed .

在恶劣电力线通信环境下，只有努力提高自动增益控制（AGC）水平，才能实现信号电平的稳定。

In poor PLC communication environment , the stability of the signal can only be realized by improving the level of Automatic Gain Control ( AGC ) .

然而由于卫星离地球很远，到达地面的卫星信号电平相当低，使GPS很容易受到各种有意或者无意的干扰，引起接收机的失锁，无法正确地完成导航定位的功能。

Since the satellite is far away from the earth , the power level of GPS signal arriving at the earth is so low that the GPS receiver is vulnerable to various kinds of intentional and unintentional interference and may lose lock to GPS signal .

测试信号电平范围为±5V，基波频率上限100kHz，精度可达失真度的2.5%。

The level range of input signal is ± 5 volts . The highest frequency of basic wave is less than 100 kHz . The accuracy of system approaches 2.5 % .

l本文提出了满意通信概率模型，对接收信号电平、基站-移动台的距离、列车运行速度等越区切换事件的强关联参数建立了满意通信概率模型。

This paper proposed the probability model of satisfactory communication and established the probability satisfactory communication model of the rxlev , the distance between BS and MS , the speed of train .

根据仿真结果，可知宽带接收系统的信号电平变化约为10dB，信号电平的分布受到传播模式中的接收带宽、达波数、路径差的影响。

For a received signal-level variation in wide-band transmission is about 10 dB and is influenced by received bandwidth , arrived wave number and path length difference .

每个像素均包括：信号电平保持电容器；

Each of the pixels includes a signal level holding capacitor ;

有线电视网络信号电平偏低的原因分析及维修方法

The Causes and Maintenance of TV Signal Level Abnormality in CATV Network

移动通信中宽带接收系统信号电平特性的研究

Receiving Systems Study on Received Signal-level Characteristics in Wideband Transmissions in Mobile Communications

共用天线电视系统中信号电平的增益和损耗

Signal Level Gains and Losses in Community-Antenna Television Systems

在记录技术中，失配将会引起信号电平的损失和失真。

In recording , mismatch will cause a loss of signal level and distortion .

双电源信号电平转换的优势

The Benefits of Dual Supply Signal Level Translation

一种多功能快逻辑信号电平转换电路的设计与实现

The design and implementation of a Multi-functional levels adaptation circuit for fast logic signals

接收机解调门限信号电平

Demodulation threshold signal level of receiver

模拟中继电路信号电平的自动调节

Auto-adjust Signal Level of Trunk Line

在远程通信线的某一位置上，以分贝（奈培）单位表示的信号电平。

The signal level in decibels ( or nepers ) at a particular position on a telecommunication line .

由于信号电平被测定以后电荷完整无缺的保留在像素中，所以其读书是非破坏性的。

Readout is non-destructive because the charge remains intact in the pixel after the signal level has been determined .

电路板采用混合电源供电，光电隔离方法转换信号电平等，提高了系统的抗干扰能力和信号采集效果。

The board has a mixed power supply system and optocouplers to enhance the system anti - interference ability and the collection effect .

从而验证了FPGA+DAC+电调衰减器方案实现整个频率范围内微波信号电平控制的可行性。

Finally , the feasibility of microwave signal voltage control between the whole frequency range by FPGA + DAC + electronic attenuator has been verified .

无线测量集中在移动台与基站之间，主要测量信号电平、信号质量、定时提前量等等。

Wireless measurements occur between MS and BTS and the major measurement parameters include signal level , signal quality , time advance and so on .

它可根据两支路信号电平之比值来自适应地或是工作于等增益合并模式，或是工作于选择分集模式。

It can work in ei - ther an equal-gain combining mode or a selection mode adaptively according to the ratio between the signal levels in the two branches .

计算了在中等海情下典型航海雷达接收机输入端目标的信杂比、目标和杂波的信号电平。

The input S / N ratio of target return and its signal levels , and sea-clutter for a typical marine radar receiver under moderate sea state are calculated .

本文介绍的调制器是利用非线性网络，使控制电平和信号电平接近线性，因而改善了数字式压伸增量调制器的动态范围。

This paper describes a coder using a nonlinear network in which the relationship between the control level of the pulse amplitude modulator and the signal level is approximately linear .

该方法利用功控后的接收信号电平的平稳性与最大多普勒频移有密切关系这一特点，通过测量接收信号电平的平稳性估计多普勒频移。

Based on the fact that the faster channel variation leads to greater received power fluctuation , the scheme estimates the Doppler shift by measuring the fluctuation of the received signal power .

在高信号电平和高负荷情况下，电子管电路仍然能减小其对输出和频响的影响。

As a result , the tube circuit is completely decoupled from the microphone output and its characteristic response curve will be unaffected by very high signal levels or varying load conditions .

文中给出了限幅二极管在高/低输入信号电平时的等效电路以及同轴滤波器的设计分析过程。

In the paper , the equivalent circuits of the PIN-limiter diode at high / low input signal level are described . And the design process of the coaxial-filter is given , too .

本课题在利用数据采集系统的基础上，分别讨论了如何实现对远动通道监控中主要参数&信号电平、频率和信道信噪比的监控。

Based on the data acquisition system , the realizations of the monitoring of parameters in the remote channel , including signal level , frequency , SNR ( signal-to-noise-rate ) of the channel , are presented respectively .