中興認證判斷題庫

1、微波鏈路的主要組成部分是終端站和中繼站。| Microwave link mainly consists of terminal station and repeater station.SDH數(shù)字微波主要應用于通信網(wǎng)絡(luò)中的骨干傳輸電路。|SDH digital microwave are mainly used in the transmission backbone circuit of communication network.ZTE MW PR1C環(huán)回功能，包括兩種模式，本地環(huán)回和遠端環(huán)回。| ZTE MW PR1(toop back function includestwo mod

2、es that are inwardloopback and line loopback.STM-1 的速率是.155.55M.| The rate of STM-1 is 155.55M.微波鏈路的主要組成部分是終端站和中繼站。| Microwave link mainly consists of terminal station and repeater station.SDH數(shù)字微波主要應用于通信網(wǎng)絡(luò)中的骨干傳輸電路。|SDH digital microwave are mainly used in the transmission backbone circuit of communi

3、cation network.ZTE MW PR1C環(huán)回功能，包括兩種模式，本地環(huán)回和遠端環(huán)回。| ZTE MW PR1(toop back function includestwo modes that are inwardloopback and line loopback.STM-1 的速率是.155.55M.| The rate of STM-1 is 155.55M.ZXMW-PR1設(shè)備允許輸入的最大電平是 -20dBm| The maximum input level of ZXMW-PR10 is- 20dBmPDH數(shù)字微波主要應用于對網(wǎng)絡(luò)管理綜合能力要求較高的重要通信電路。|

4、PDH digital microwave are mainly used in the crucial communication circuits that has higher requirements on integration ability of network management.1+1的鏈路要在合成器中加3.5dB的損耗，使用軟波導要加至少1dB的損耗；| For 1+1 link, it is necessaryto add 3.5dB loss in combiner. For flexible waveguide, at least1dB loss is needed

5、.微波頻率越高，信息容量越大。| The higher microwave frequency, the information capacity is bigger.1+ 1HSB配置下，單端合路器損耗為7dB。| For 1+1 HSBconfiguration,single port combiner loss is7dB.誤碼儀中的LOS表示信號丟失，LOF表示幀失步或者幀丟失。| LOS in Error Code tester means the loss of signal, and LOF means loss of frame.ZXPR10/1+1 的 IDU 重 3.7kg

6、。| The weight of ZXPR10/1+1 is 3.7kg.ZXPR10的IDU電源接口中，NC端接-48V。| For ZXPR 10 IDU power supply port, the NC end is connected to -48V.中興微波中的IDU電源位置在MU板子上。| In ZTE microwave equipment, the location of IDU power supply is on MU board.中興的A1版的ODl是長方體形狀。| ZTE A1 version ODU is cuboids shape.中頻電纜不可以和 220V電源線

7、纜扎在一起。| IF cable cannot be bundled with 220V power supply wire.天線極化孔對準H,屬于垂直極化。| Whenpolarizationhole of antenna aims at H direction, this belongs to vertical polarization.中興IDU電壓范圍為-40VDC-50VDC。| ZTE IDU power supply range is -40VDC-50VDC.IDU可以不用接地，因為IDU是裝在龍門架上的，機架本身接地。| IDU does not need grounding

8、 because IDU is mounted on 19inch rack and this rack has already been grounded.ZXPR10( 1+1)熱備份設(shè)備，分離式 ODU的安裝是：將兩個 ODU安裝在合路器上，并將合路器波導口與專 用安裝架波導口相連，使用U型抱桿將安裝架固定在桿上。天線和安裝架的波導口通過一根軟波導相連。| For ZXPR10(1+1) hot standby equipment, the installation procedure of divided ODUis: install two ODU oncombiner, and c

9、onnect the waveguide port of combiner with waveguide port of special mountingrack;then, fix mounting rack on pole by using U-shape pole.Antenna is connected with waveguide port of mounting rack by a flexible waveguide.安裝過程中，中頻電纜應直接與ODU單元直接連接。| During the installation process, IF cable should be conn

10、ected with ODU units directly.設(shè)備加電時，將IDU單元開關(guān)置于“ OFF”，插上電源線插頭。先打開機房內(nèi)開關(guān)電源上空氣開關(guān)，再將IDU單元開關(guān)置于“ ON| When turn on power supply, set IDU switch toOFF and then connect power supply. Next, turnon the circuit breaker of on-off power supply inside shelter first, and then switch IDU toON中興微波設(shè)備IDU面板上ALARM/MAINT旨示

11、燈中,顯示黃燈，說明系統(tǒng)存在次要告警.| For ZTE microwave equipment IDU, the indicator light on front panel display yellow that means the system has minor alarm.中興IDU面板DSC接口連接器型號是 RJ45| The model name of DSC interface connector on ZTE IDU panel is RJ45.駐波比的定義是：行駐波狀態(tài)時，波腹電壓與波節(jié)電壓之比( VSWR| SWR is defined as: for traveling

12、 standing wave,the voltage ratio between antinode point and node point of wave. (VSWR)ODU的防水工程中，首先要做的是用防水膠泥將接ODI端的中頻電纜密封.| In the waterproof project of ODU, the first step is that seal IF cable of ODU end by using waterproof mud.ZXPR10微波在CIT設(shè)置中，要想從本端登陸遠端設(shè)備，本端的電腦IP地址的設(shè)置要同 Q Interface 保持 一致。| For ZXPR

13、10 microwave equipment, during the setting process of CIT,if log in remote equipment by log in local, the IP address of local PCshould be set to the same with the address of Q interface.工程安裝中，制作完的電纜必須經(jīng)過萬用表測量合格后方可使用。| In the installation procedure, the hand madecable can be used only after measuring

14、correctly by multimeter.不同站點的設(shè)備的IP地址可以規(guī)劃在同一網(wǎng)段(子網(wǎng))內(nèi) 。| IP address of equipments in different sites can be planned in the same network segment (subnet).ZTE微波Cold Reboot是冷啟動，這種啟動方式中業(yè)務(wù)會中斷。| ZTE MW Cold Reboot is a kind of cold start that can interrupt the service.a complete project survey report for cer

15、tain sites勘測的照片要求：要求所拍的照片必須清晰并且根據(jù)設(shè)計文件中的方位角來進行拍照。其中照片中包含了，鐵塔照片、鐵塔上將要懸掛新建微波的位置照片，阻擋物照片，機房內(nèi)部機架照片，機房內(nèi)原有微波設(shè)備 的照片，如果利舊饋線窗則要拍饋線孔的照片。另外也要根據(jù)照片的命名規(guī)則來進行照片的命名。| The requirements of survey picture are shown as below: pictures must be clear and taken in accordance with the azimuth shown in design files. Among the

16、se pictures, they should include tower picture, location pictureof the new microwave equipment on tower, picture of block stuff,picture of rack inside shelters,picture of the microwave equipment already exist inside shelter.If old feeder window is utilized, then the feeder hole must be taken picture

17、s. Also, these pictures should be named following the name rules.頻率越高，需要的菲涅爾半徑越小。| The higher operating frequency, the smaller Fresnel radiusis needed.一般來說，平原地帶對于微波傳輸最有利。| Generally speaking, plain is most advantaged landform for microwave transmission.吊裝ODl前，應記錄收發(fā)頻率，版本號，序列號，岀廠日期等。| Before mounting

18、ODU, it is necessary to record the transceiver frequency, version, serial number, date and so on.我們用的焊劑應用松香| We should use rosin as a soldering flux.設(shè)備在接地連接時一定要用戶確認連接點是否正確| When grounding equipment it is necessary to request customer to confirm the grounding point corrected or not.設(shè)備連接電源時應注意電源極性和容量|

19、 When connecting the power supply, please pay attention to the polarity and capacity of power supply is correct or not.如檢查發(fā)現(xiàn)有不合格項，按照安裝規(guī)范和設(shè)計要求進行整改，直至合格為止。| If some items are found not meeting the installation specification and criterion, please correct it until meet the specification室內(nèi)信號線和控制線在布放前應做好布

20、線表，按布線裁截線料，并在兩端做好標記，注明去向，在按布線 表布放| Before doing indoor layout of signal wire and control wire, make a layout diagram. And cut the wire materials to a certain length according to the layout diagram. Then mark two ends of wire and note where are they used., at last, layout all the wires.室內(nèi)信號線和控制線的規(guī)格、路

21、由走向應符合設(shè)計要求。| Specification and routing of indoor signal wire and control wire should meet the design requirements.微波IF饋線長度小于60米時，兩處接地| Microwave IF feeding cable that has length less than 60m should be grounded at two points.平面波沿傳播方向是沒有電場和磁場縱向分量的，所以稱為橫電磁波，記為TEM波有時我們把這種電磁波簡稱為電波。| Plane wave has no ve

22、rtical vector of electric field and magnetic field, so it is calledTransverse Electromagnetic Wave and recorded as TEM wave. Sometimes we call this kind of electromagnetic wave as electrical wave.極化分集是利用兩面天線發(fā)射兩種極化的同一信號，在接收端采用一個天線分別接收各自的極化信號,后進行合成的通信的方式。| Polarity diversity modeis a kind of communica

23、tion mode that utilizesame signal with two kindsof polarity modes and emitted from two antennas, and then use one antenna at receiving end toreceive each polarized signal and combine them.在電波的傳播空間中，在接收點的合成場強，當費涅耳區(qū)號趨近于無限多時，就接近于自由空間場強；| In the space where electrical wave transmit, when the number of F

24、resnel zone approach infinite, the combining field intensity at receiving point is equal to the field intensity in free space.在自由空間傳播的電磁波不產(chǎn)生反射、折射、吸收和散射等現(xiàn)象，即總能量未被損耗| There is no reflection, refraction absorption and scatter for the electromagnetic wavetransmitted in free space. That is to say, the to

25、tal energy hasn' t been consumed.主瓣寬度是指在主瓣最大值兩側(cè)功率密度等于最大值一半的兩個方向間的夾角| Central lobe width indicate that an inclosed angel in two directions besides maximumof central lobe and has a power density half of the maximum vale.天線主瓣寬度越小，天線輻射的能量越集中，即定向性能越好。| The smaller of the central lobe width, the energ

26、y emitted from antenna will be higher integrated. That is to say, it has the better directional function.傳輸容量是用傳輸速率來表示的。| Transmission capacity is presented by transmission rate.傳輸質(zhì)量是用差錯率的大小表示的。| Transmission quality is presented by error code rate.自動功率控制可以縮寫為AGC| Automatic power control can be abbr

27、eviated as AGC.噪聲系數(shù)是收信設(shè)備重要指標，由多級微波部件組成的收信系統(tǒng)噪聲系數(shù)主要取決于前面的一兩級| Noise figure is an important performance of receiving equipment. For receiving equipment that consists of multilevel microwave parts, noise figure mainly depends on the first and second level.雨衰嚴重的鏈路，盡量使用水平極化方式。| For the link had heavy rain

28、 fading, it is better to use horizontal polarization.水面線路反射系數(shù)大，容易形成反射性衰落| Fading is more serious when sun is rising or setting.太陽升起與降落時，衰落也較嚴重| Fading is more serious when sun is rising or setting.K型衰落在線路經(jīng)過平滑地面時特別嚴重。| K-type fading is serious especially when it passing by the smooth ground.空間分集采用高低不

29、同的兩副天線接收不同的信號。| Space diversity uses two antennas that are in different height to receive different signal.極化分集是利用同一天線發(fā)射同極化的同一信號。| Polarization diversity use the same signal transmitted by a same antenna.微波站距離越長，衰落越小。| The longer distance between microwave sites, the fading is smaller.微波站距離越短，衰落越大。|

30、 The smaller distance between microwave sites, the fading is bigger.SDH中E2, K1字節(jié)屬于 MSOH| For E2 of SDH, K1 byte belongs to MSOH.SDH中 E1，K2 字節(jié)屬于 RSOH| For E2 of SDH, K2 byte belongs to RSOH.異步復接是各低次群各自使用自己的時鐘，先進行碼速調(diào)整，使各低次群獲得異步，再復接。| Asynchronous multiplexing can be explained as each lower order group

31、 use itself clock, and adjusting code rate first in order to make lower order group obtain asynchronization, then multiplexing.同步復接是用一個高穩(wěn)定的主時鐘來控制被復接的幾個高次群，使幾個高次群數(shù)碼率統(tǒng)一在主時鐘頻率 上,可直接復接.| Asynchronous multiplexing is to use a high stable chief clock to control the several multiplied high order groups, to

32、 make these high order groups unified in the chief clock frequency, which can be multiplied directly.采購部門負責外購設(shè)備維修前故障判斷及規(guī)范描述，維修完成后的詳細記錄。| Purchasing department is in charge of the fault judging before repairing, and the detail record after repairing.提供有疑問的報廢設(shè)備的維保情況屬于營銷事業(yè)部代表處在返修設(shè)備管理方面的責任| Providing ma

33、intenance and warranty information of abandoned equipment is the responsibility of local office of Sales Division.ZXMW-PR1設(shè)備中頻電纜短路會燒壞保險管。| If IF cable in ZXMW-PR10 equipments is short, it will also cause fuse burning-outZXMW-PR1設(shè)備遠程登錄必須設(shè)置無線口IP| If need remote log in ZXMW-PR10 equipment, it must be s

34、et IP address of radio port.岀現(xiàn)頻率干擾時，改變調(diào)制方式可以減少頻率干擾。| When occur frequency interference, changing modulation mode can reduce the frequency interference.頻率干擾可通過調(diào)節(jié)網(wǎng)管帶寬減少。| Adjusting the network management bandwidth can reduce frequency interference.ZXMW-PR1可選用的調(diào)制方式為 16QAM| ZXMW-PR10 can support 16QAM m

35、odulation mode.ZXMW-PR1設(shè)備版本升級不需要更改無線口IP地址。| Version upgrading of ZXMW-PR10 doesn' t need changing the IP address of radio port.設(shè)置其他網(wǎng)段的IP地址不會影響登錄自研設(shè)備網(wǎng)管。| Set IP address of the other segment doesn' t impact logging in self-designed network management.巡檢時在網(wǎng)管上看到有一個ODI當前的發(fā)射功率顯示是：NA其他參數(shù)正常，另一個 ODU顯

36、示是20dBm,表示ODI損壞。| When found transmitted power of an ODU displayed: NA, but the other parameters are normal.The other ODU transmitted power displayed: 20dBm. This means ODU is damaged.一跳微波幾分鐘岀現(xiàn)一次閃斷，首先懷疑頻率干擾。| A hop microwave occurs flash disconnected, so we need to consider about the frequency inter

37、ference.中頻接口電纜復用屬于MU板功能。| IF cable interface multiplexing belongs to the function of MU board.日常巡檢需要檢查保護方式。| It is necessary to check the protecting way in daily inspection.開箱驗貨要記錄設(shè)備類型。| We must record the equipment type when doing open-box check.ZXMW-PR1設(shè)備,IDU版本升級的是MU板備用區(qū)| For ZXMW-PR10 equipment,

38、IDU version upgrading is used for spare area of MU board.上行中頻信號的頻率為350 MHZ，下行中頻信號的頻率為140 MHZ。| The IF signal of uplink is 350 MH Z, and the IF signal of downlink is 140 MH Z.一跳微波不可以出現(xiàn)兩端天線直徑不一樣的現(xiàn)象。| For one hop microwave, it is impossible for two ends have different antenna diameter.直徑0.6米的天線必須安裝水平支撐

39、桿。| We must install the horizontal pole for the 0.6m diameter antenna.ZXMW-PR1設(shè)備升級后使用新版本不需要斷站。| It is unnecessary to cut off station after upgrading ZXMW-PR10 software.不設(shè)置IDU IP微波無法傳遞E1信息。| It is incapable to transmit E1 information without setting IDU IP address.ZXMW-PR1設(shè)備IDU頻率可以變改。| IDU frequency

40、of ZXMW-PR10 can be changed.ZXMW-PR10 0.6米的天線和1.2米天線接口類型相同，可以代替使用。| ZXMW-PR10.6m antenna and 1.2m antenna have the same interface so that they can be exchanged.微波在水面上傳輸，傳輸性能會增強。| When microwave is transmitting on water surface, the transmission capability will be better.測A1 ODU電阻，阻值是一定的。| When testi

41、ng resistance of ODU, the resistance value is definite.設(shè)備接收電平到-65也能正常通訊，可免維護。| When equipment receive level is- 65dB, it still can be used normally for communication anddoesn' t need maintenance.中繼站中E1線的端子板連接順序是一一對應的。| I/O board connection of E1of repeater site is corresponding one to one.雨霧對8GH

42、z以下的微波產(chǎn)生的影響很大。| Rain and fog cause the most serious impact on microwave with frequency lower than 8GHz.微波傳輸中，容易產(chǎn)生衰落的最主要原因是氣候原因。| The main cause of fading occurred in microwave transmission process is climate.微波的頻率范圍是 300MHZ- 300GHZ, 15G的微波的波長是 2mm.| The frequency range of microwave is 300MHZ- 300GHZ

43、. The wavelength of 15GHzmicrowave is 2mm.饋源波導口的寬面（E面）與水平地面平行的為水平極化饋源波導口的窄面（H面）與水平地面平行的為水平極化扎帶的朝向可以不一致扎帶的間距可以不一致電源線與信號線可以一起捆扎測量設(shè)備電阻用GPS儀器測量站點經(jīng)緯度用萬用表導航使用GPS儀器測量電流用電流表測量電纜是否短路萬用表應放到電阻檔或蜂鳴器位置測量設(shè)備的發(fā)信功率用功率計來測量站點勘察不需要采集經(jīng)緯度站點勘察需要采集周圍環(huán)境情況微波勘測可以決定站點采用哪種鐵塔站點勘察不需要GPS儀器已存在站點需要新裝微波設(shè)備時，站點不需要工勘新建BTS基站時，如果用微波傳輸，首先應考慮微波是否視通。微波現(xiàn)場勘測，要了解的是站點信息，頻率資源，基礎(chǔ)設(shè)施等。站點信息的經(jīng)度、緯度是用GPS在站點現(xiàn)場獲取的。如果在勘測時所選取的新站點交通不便，供電無法解決，應考慮放棄該站。IP路由器屬于二層設(shè)備。| IP router belongs the equipment in the second layer.若兩臺主機間通過路由器相連，其子網(wǎng)可以不同。J| If two hos