天馈测试仪使用手册课件

Body Style,Second level,Third level,Fourth level,Fifth level,Slide Headline,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,June 2007,Page,*,天线及馈线测试基本概念,N9330A,的性能指标,N9330,的使用性,配件与选件,竞争分析,内容,June 2007,1,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,N9330A,适用范围：安装、维护与故障定位,无线通信接入系统的安装、检测和故障定位，包括,GSM 900/1800,、,UMTS,、,TD-SCDMA,、,CDMA800/450/1900,、,PHS,、,WLAN,、,WiFi,国防军事系统（如雷达等）装备的安装、检测和故障定位。,广电系统设备的安装、检测和故障定位。,1,频域测试功能,SWR vs.frequency,Return loss vs.frequency,Cable loss vs.frequency,2,故障定位功能,(DTF),Return loss vs.distance,Cable loss vs.distance,June 2007,2,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,天馈线测试概述,通过测量单端口参数,S11,得到测试信号和反射信号的幅度、相位等信息，再经过计算得出电压驻波比、回波损耗、馈线损耗、故障位置等信息。,Lightning,Damage,Tower,Connectors,Untighted,Connector,Cable Pinched,Coaxial Cable,Signal,Transmission,Signal,Reflection,June 2007,3,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,仪器工作原理框图,被测设备,测试通道,采样混频器,参考通道,采样混频器,254000MHz,2550MHz,本振,IF Channel,(,Referrence,),功分器,耦合器,本振分配,IF Channel,(Test),BPF,BPF,A/D,A/D,Data Process System,Display,反射信号,200KhZ,200KhZ,June 2007,4,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,天馈线测试仪的基本测试项目,频域测试,VSWR,（驻波比）,vs.,频率,Return loss,（回损）,vs.,频率,Cable loss,（电缆损耗）,vs.,频率,故障定位测试（,DTF,）,VSWR,（驻波比）,vs.,距离,Return loss,（回损）,vs.,距离,天馈线测试仪通过对频率域的测试，然后利用付立叶反变换得到时域分析，时域信号进一步转换成距离域从而得到故障定位,June 2007,5,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,测量功能一,:,回损及驻波比,定义：,June 2007,6,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,测量功能二,:,单端口电缆损耗测量（插入损耗）,去除天线，然后连接精确的短路器，则射频信号被,100%,反射，拖过对双倍程的信号的测量然后平均而得到单程的电缆插入损耗。,June 2007,7,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,测量功能三,:,故障定位,Velocity,Insertion Loss,时域,距离域,(DTF),频域,Inverse FFT,June 2007,8,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,测量功能三,:,故障定位,DTF,分辨率,=(c*vp)/(2*fspan),DTF,距离范围,=,分辨率*测量点数,June 2007,9,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,单端口网络仪的校准,June 2007,10,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,仪器校准和校准件,校准的作用,如果不在测量前进行校准，仪器内部的系统误差不能得到消除，测量结是很不准确甚至是错误的，不能反映被测件的真实特性。,校准后，曲线更平滑，更真实反映被测件的实际反射特性,校准件分类,电子校准件,:,方向性,=38 dB,机械校准件,:,方向性,=42 dB,方向性越大，测试结果越准确,June 2007,11,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,天线及馈线测试基本概念,N9330A,的性能指标,N9330,的使用性,配件与选件,竞争分析,内容,June 2007,12,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,Agilent N9330A,手持式天馈线测试仪,25 MHz 4 GHz,June 2007,Page,13,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,N9330A,（,25M4G Hz,）技术规格指标,回波损耗,测量范围,:0 dB to 60 dB,分辨率,:0.01 dB,馈线损耗,测量范围,:0.00 to 30.00 dB,分辨率,:0.01 dB,Lightning,Damage,Tower,Connectors,Untighted,Connector,Cable Pinched,Coaxial Cable,Signal,Transmission,Signal,Reflection,Reflected,电压驻波比,测量范围,:1 65,分辨率,:0.01,June 2007,14,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,故障定位功能指标,14.18 M,(46.51m),Distance,0,Lightning,Damage,Tower,Connectors,Untighted,Connector,Cable Pinched,Coaxial Cable,Signal,Transmission,Signal,Reflection,测量范围,:,(,测量点数,-1)x,分辨率,测量点数,=521,261,or 131,最大故障定位距离为,1497.1m(4,911.75ft),分辨率,(m):,Vp:,信号传播相对速度系数,f1,起始频率,f2,终止频率,回波损耗,测量范围,:0.00 to 60.00 dB,SWR:,测量范围,:1.00 to 65.00,June 2007,15,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,测量速度快、测量精度高,在小于,2,秒（典型值：,1.6,秒左右）的时间内完成一次全频段的,521,个点的测量扫描,单点测量只需要,3.1ms,N9330A,具有出色的测量精度：,521,个测量点,+42dB,的方向性,N9330A,提供三种测量点的选择（,131,261,521,），点数越多测量精度越高,方向性越大，系统误差越小，测量结果的精度越高,June 2007,16,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,抗干扰能力强：与主流同类产品的比较,干扰信号,-5dBm875M,干扰信号,+14dBm875M,N9330A,June 2007,17,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,天线及馈线测试基本概念,N9330A,的性能指标,N9330,的使用性,配件与选件,竞争分析,内容,June 2007,18,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,1)4,小时超长电池工作时间,内置智能锂电池，4500mAH,4小时连续工作,可选的备用电池,车载充电器,June 2007,19,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,2)7.2”,防眩光,LCD,防眩光,LCD,保障即使在户外强光下也有清晰显示,无需在户内户外用不同的亮度调节,无需刻意遮蔽强光,更大更高分辨率的显示屏（,7.2,吋，,640 x480,分辨率）,June 2007,20,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,支持直接的,U,盘存储，包括直接的屏幕图像（,.JPG,）存储。,USB,连接，更方便的,PC,遥控和数据导出,3)USB,连接,June 2007,21,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,N9330A,后分析软件,强大又易于使用的各项功能,方便的显示和分析,数据文件的导入导出,Smith,圆图,方便的文档管理和打印,June 2007,22,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,4),支持,11,种本地语言,Chinese,Chinese(traditional),English,French,German,Italian,Japanese,Korean,Portuguese,Russian,and Spanish.,June 2007,23,NA_241 Introducing N9330A Handheld Cable&Antenna Tester,Agilent Restricted,5),适合现场使用的设计,适用于户外和现场的优化设计,封闭式的面板按键，防水防尘,全金属屏蔽盒，具有更好的抗电磁干扰性能和机械可靠性。,标准的便携软包支持,既可用于携带，也可直接用于工作，无需将仪表从包内取出。,可容纳现场所需附件均可,标准配置,June 2007,24,NA_