【做工精良】子母鐘、船用子母鐘、艦船子母鐘

CZM-1型船用子母鐘，是我公司研製生產的專門用於船舶領域的時間服務系統。該系統由一臺母鐘和幾十隻子鐘組成，通過信號電纜和電源電纜相互聯接起來；它能同時提供當地時間、國際協調時UTC時間和北京時間的顯示。Model CZM-1Marine Master-slave is a time server system manufactured by our company and specially used in marine field. Composed of one master clock and scores of slave clocks and connected with the signal cables and power cables, this system can simultaneously provide the local time, UTC (coordinated universal time) and Beijing time.

子母鐘系統設備由母鐘、子鐘及通信線纜組成。其主要功能為：The master-slave system is composed of a master clock, slave clocks and communication cables with the main functions as follows:

²       顯示統一的標準時間Display the uniform standard time

²       向其它設備提供時間信號Provide other equipments with time signals

各部分特點Characteristics of Each Part

母鐘作為整個時鐘系統的基礎主時鐘，它能夠接收來自GPS的標準時間信號，將自身的時間精度校準，並分配精確時間信號給各個子鐘和其他需要時間的設備，並且通過鍵盤操作對子鐘進行點對點監控。As the basic master clock of the whole clock system, the master clock can receive the standard time signals from GPS, calibrate the time precision of its own, distribute the precise time signals to each slave clock and other equipment requiring time, and carry out point-to-point monitoring on slave clocks through operating the keyboard.

母鐘通過標準的RS422介面接收GPS發送的標準時間信號。外部時間源正常工作時，該信號將作為母鐘的時間基準；外部時間源出現故障時，母鐘將采用自身的晶振作為時間基準。The master clock receives standard time signals sent by GPS through standard RS422 interface. The signal will be regarded as the time base of the master clock when external time sources are normal;the master clock will adopt self crystal oscillation as the time base when external time sources are broken down.

該系統由一臺母鐘和幾十隻至上百隻子鐘組成。通過信號電纜相互連接起來，所有子鐘都由母鐘控製運行，除標準時子鐘指示GMT或某一特定時間外，其它子鐘都保持同步（註：標準式子鐘總是順時針方向，以固定頻率運行），所有子鐘因其安裝使用條件不同，在結構形式上有所不同。The system is composed of a master clock and scores even hundreds of slave clocks. Connected with signal cables, all slave clocks run under the control of the master clock, and otherslave clocks will synchronize except that the standard slave clock displays GMT or other certain time (Note: The standard slave clock always runs clockwise with a fixed frequency). Due to different installation and application conditions, all slave clocks are different in structure.

母鐘部分以一微處理器和幾塊VLSIC器件為核心，構成一控製單元，可以同時對所有子鐘進行順時針或逆時針快速調整。母鐘采用LCD大屏幕液晶顯示，通過鍵盤調整來實現各種功能。With a microprocessor and several VLSIC devices as the core forming a control unit, the master clock can make rapid clockwise or anticlockwise adjustment of all slave clocks simultaneously. Adopting large-screen LCD, the master clock can achieve various functions through adjusting the keyboard.

母鐘采用高穩定晶振，保證瞭設備的穩定性，可靠性，同時母鐘具有記憶功能，內置實時時鐘芯片，停電後可保持數據十年，來電後自動顯示正確時間。Adopting high-stability crystal oscillator, the master clock has ensured the stability and reliability of the equipment, and with the clock chip inside, the master clock has memory functions, which can keep data ten years when powered off, and display the right time automatically when powered on.

母鐘電源采用交直流並行供電形式，來實現系統的不間斷工作。當交流斷電時，自動切換成直流24V供電；當交流電恢復後，自動回到交流供電方式。With AC/DC power supply, the power of the master clock will achieve the continually running of the system. It can change to DC 24V supply power automatically when AC powered off, and turn to AC supply power automatically when AC powered on.

主要技術指標Main Technical Index

²       母鐘走時精度：±0.1秒/天Travel-time Precision of Master Clock: ±0.1 second /day

²       工作時間：連續工作Running Time: Running continually

²       母鐘工作電壓：AC220V±10%   50Hz/60Hz±5%, DC24V±5% Running Voltage of Master Clock: AC220V±10%   50Hz/60Hz±5%, DC24V±5%

²       工作溫度范圍：-10℃~+50℃Running Temperature Range:-10℃~+50℃

²       電磁兼容性：符合GJB151-97有關規定Electromagnetic Compatibility: Conforming to relevant provisions of GJB 151-97

²       供電方式：主電源交流220V±10% 50/60Hz；備用電源直流24V±10% Power Supply Mode: Main power supply AC220V±10%   50/60Hz; emergency power supply DC 24V±10%

²       與GPS介面：標準RS422介面，數據速率4800bps. GPS數據輸出采用標準NMEA0183 ASCII碼介面協議，本套母鐘使用【GPRMC】指令進行校時操作。Interface with GPS: Standard RS422 interface, data rate 4800bps. GPS data output adopts Standard NMEA0183 ASCⅡCode Interface Protocol, and this set of master clock use【GPRMC】instructions to carry out time-checking operation.

²       輸出介面：子鐘脈沖信號，2路。可以根據所帶負載設置（既有設備最多4路）；RS422介面1路Output interface: Pulse signals of slave clocks, circuit 2. It can be set according to the load (4 circuits for the present equipment at most) ; RS422 interface circuit 1.

²       子鐘所需信號：頻率0.5Hz幅度DC18V母鐘一路驅動50個子鐘Signals required by the slave clock: Frequency 0.5Hz amplitude DC18V master clock of circuit 1 drives 50 slave clocks.

²       子鐘調整：子鐘調整信號頻率10Hz  幅度DC18V ?Slave clock adjustment: Frequency of slave clock adjusting signals 10Hz   amplitude DC18V

²       平均功耗：小於15W Average power consumption: Less than 15W

²       母鐘體積：350×280×100（mm×mm×mm）Size of master clock: 350×280×100(mm×mm×mm)

²       顏色：中綠灰Color: Medium green gray²       重量：5公斤Weight: 5 kg

工作原理Operating Principle

母鐘采用高性能單片機控製，進行數據存貯、譯碼運算，產生脈沖信號，在LCD液晶屏幕上顯示時間信息，並通過RS422介面輸出母鐘時間信號。Adopting the high-performance single chips control, the master clock proceeds data storage and coding calculation, produces pulse signals, displays the time on LCD screen, and outputs the time signals of the master clock through RS422 interface.

母鐘接收標準時間接收單元輸出的標準時間信號對自身精度進行校準。The master clock receives the standard time signals outputted by standard time receiving unit, and calibrates the precision of its own.

母鐘輸出子鐘運轉所需要的脈沖信號，驅動子鐘運轉。母鐘可以提供正反轉兩路脈沖信號確保子鐘在最短時間達到所指示的正確時間。The master clock outputs the pulse signals required by the running of the slave clocks to drive the running of the slave clocks. The master clock can provide clockwise and anticlockwise pulse signals of two circuits to ensure that the slave clocks indicate the correct time in the shortest time.

1. 安裝Installation

²       母鐘為壁掛式或嵌入式。用M8螺絲釘4顆將鐘體固定。The master clock is wall-mounted or embedded, and the clock body shall be fixed with four M8 screws.

²       壁掛式子鐘需要用3顆或4顆螺絲釘固定。安裝時請參閱產品安裝圖。The wall-mounted slave clocks shall be fixed with three or four screws. For the installation, please see the Product Installation Diagram.

²       嵌入式子鐘需要固定在一個有空間的平麵上，安裝請參閱圖紙。The embedded salve clocks shall be fixed on a plane with some space. For the installation, please see the diagram.

1. 與外部連接和方法External connection & methods

²       母鐘與子鐘通過四線電纜連接。The master clock and the slave clock are connected by quad cables.

²       母鐘有多路輸出，與子鐘連接時盡量平均分配。As the master clock has multi output circuits, it is required to distribute as equal as possible when it is connected with the slave clocks.

²       要求嚴格按照標識正確連接。It is required to connect them correctly in accordance with the marks strictly.

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