题干:(注:黄底为正确选项,白底为错误选项) 微波链路的主要组成部分是终端站和中继站。 | Microwave link mainly consists of terminal station and repeater station. SDH数字微波主要应用于通信网络中的骨干传输电路。 |SDH digital microwave are mainly used in the transmission backbone circuit of communication network. ZTE MW PR10环回功能,包括两种模式,本地环回和远端环回。 | ZTE MW PR10 loop back function includes two modes that are inward loopback and line loopback. STM-1max.book118.com.| The rate of STM-1 is 155.55M. 微波链路的主要组成部分是终端站和中继站。 | Microwave link mainly consists of terminal station and repeater station. SDH数字微波主要应用于通信网络中的骨干传输电路。 |SDH digital microwave are mainly used in the transmission backbone circuit of communication network. ZTE MW PR10环回功能,包括两种模式,本地环回和远端环回。 | ZTE MW PR10 loop back function includes two modes that are inward loopback and line loopback. STM-1max.book118.com. | The rate of STM-1 is 155.55M. ZXMW-PR10设备允许输入的最大电平是-20dBm | The maximum input level of ZXMW-PR10 is –20dBm PDH数字微波主要应用于对网络管理综合能力要求较高的重要通信电路。 | PDH digital microwave are mainly used in the crucial communication circuits that has higher requirements on integration ability of network management. 1+1的链路要在合成器中加3.5dB的损耗,使用软波导要加至少1dB的损耗; | For 1+1 link, it is necessary to add 3.5dB loss in combiner. For flexible waveguide, at least 1dB loss is needed. 微波频率越高,信息容量越大。 | The higher microwave frequency, the information capacity is bigger. 1+1HSB配置下,单端合路器损耗为7dB。| For 1+1 HSB configuration, single port combiner loss is 7dB. 误码仪中的LOS表示信号丢失,LOF表示帧失步或者帧丢失。 | LOS in Error Code tester means the loss of signal, and LOF means loss of frame. ZXPR10/1+1的IDU重3.7kg。 | The weight of ZXPR10/1+1 is 3.7kg. ZXPR10的IDU电源接口中,NC端接-48V。 | For ZXPR 10 IDU power supply port, the NC end is connected to -48V. 中兴微波中的IDU电源位置在MU板子上。 | In ZTE microwave equipment, the location of IDU power supply is on MU board. 中兴的A1版的ODU是长方体形状。 | ZTE A1 version ODU is cuboids shape. 中频电缆不可以和220V电源线缆扎在一起。 | IF cable cannot be bundled with 220V power supply wire. 天线极化孔对准H,属于垂直极化。 | When polarization hole of antenna aims at H direction, this belongs to vertical polarization. 中兴IDU电压范围为-40VDC~-50VDC。 | ZTE IDU power supply range is -40VDC--50VDC. IDU可以不用接地,因为IDU是装在龙门架上的,机架本身接地。 | IDU does not need grounding because IDU is mounted on 19inch rack and this rack has already been grounded. ZXPR10(1+1)热备份设备,分离式ODU的安装是:将两个ODU安装在合路器上,并将合路器波导口与专用安装架波导口相连, 使用U型抱杆将安装架固定在杆上。天线和安装架的波导口通过一根软波导相连。 | For ZXPR10 (1+1) hot standby equipment, the installation procedure of divided ODU is: install two ODU on combiner, and connect the waveguide port of combiner with waveguide port of special mounting rack; then, fix mounting rack on pole by using U-shape pole. Antenna is connected with waveguide port of mounting rack by a flexible waveguide. 安装过程中,中频电缆应直接与ODU单元直接连接。 | During the installation process, IF cable should be connected with ODU units directly. 设备加电时,将IDU单元开关置于“OFF”,插上电源线插头。先打开机房内开关电源上空气开关,再将IDU单元开关置于“ON | When turn on power supply, set IDU switch to OFF, and then connect power supply. Next, turn on the circuit breaker of on-off
中兴认证判断题库.doc
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