论文部分内容阅读
随着我国广播电视等工业的迅速发展,频率特性图示仪已得到广泛的应用.本文仅就使用扫频仪时经常遇到的一些问题作一些介绍.一、被测网络的频率特性曲线滞后使用者往往反映扫频仪的频标不准,除个别特殊情况外,这是由于扫频信号经被测网络滞后所引起的.由扫频仪的工作原理可知,扫频仪输出的扫频信号加于被测网络的输入端后,由于被测网络频率响应
With the rapid development of radio and television industries in our country, the frequency characteristics of the graphical display has been widely used.This article only on some frequently encountered problems when using the scanner to make some introduction.A, the measured network frequency characteristic curve lags behind Users often reflect the frequency scanner is not allowed, in addition to some special circumstances, this is due to the swept signal caused by the measured network lag by the working principle of the sweeping instrument shows that swept the swept frequency output After the signal is applied to the input of the network under test, the frequency response of the network under test is responded to