首页>
外国专利>
LOW-COST LEAKAGE DETECTOR FOR A DIGITAL HFC NETWORK
LOW-COST LEAKAGE DETECTOR FOR A DIGITAL HFC NETWORK
展开▼
机译:数字HFC网络的低成本泄漏检测器
展开▼
页面导航
摘要
著录项
相似文献
摘要
A handheld leakage detector for finding digital signal leaks in a HFC network, comprises a radio receiver, a leakage receiver, leakage sampler, a correlator, and a display. The radio receiver receives samples of the digital signal taken from the HFC network, called “reference samples.” The leakage receiver receives a leakage signal, which is a leaked version of the digital signal from the HFC network. The leakage sampler samples the leakage signal to form leakage samples. The correlator performs a cross-correlation of the reference samples and the leakage samples, to produce a correlation function. An optimizable value is determined from the correlation function. The value generally becomes more optimized as the detector approaches the leak. The leak is sought by iteratively changing the position of the detector until the value becomes substantially optimized or the leak is found.
展开▼