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1、全向天线加载衰减器安装手册Attenuator Installation manual for omni directional antenna 1设备 Equipment（1） 直角转接头 Right angle connectorPicture 1 图 1（2） 10DB 衰减器 10DB attenuatorPicture 2 图 22安装步骤 Installation procedure（1）Pre-Installation 安装前Picture 3 图 3（2）准备一个直角转接头和 10DB 的衰减器，如图 4 所示按照下图并连接好转接头和衰减器。（使用 1.6NM 的扭距）Prep
2、are one connectors and one attenuator，And connect them as following pic4.(with 1.6 NM)直角转接头Right angle connector衰减器attenuatorPicture 4 图 4（3）取下全向天线 Remove the antenna（4）如图 4，连接好全向天线和（衰减器转接头） （使用 1.6NM 的扭距）As Pic4，connect the antenna and (attenuator +connector) (with 1.6 NM)（5）如图 4，把（转接头衰减器全向天线）连接到 T
3、GC/TGCC 上（使用使用 1.6NM的扭距）,并使天线与波导管轴垂直。As Pic4，connect (antenna +attenuator +connector) to TCG/TGCC (with 1.6 NM)。And omnidirectional antenna has to remain horizontally at 90 from waveguide axis (due to horizontal polarization requirement)3安装后检查 Installation checking安装结束后，请立即检查。Pls. check the followin
4、g before installation is finished. （1） 确保直角转接头、衰减器、天线之间拧紧（(1.6 NM 的扭距)） 。Make sure the torque wrench is respected among connector, attenuator and antenna. （2） 确保天线的轴与波导管的轴垂直。Make sure the antenna remain horizontally at 90 from waveguide axis（3） 确保天线、直接转接头、衰减器在列车的限界之外.Make sure attenuator + right angle + omni directional antenna is located outside train dynamic range.
