Localization of GPS satellite clocks

Shanghai Ruicheng Electric Co., Ltd. isGPSSatellite clock manufacturer, good quality, low price, excellent service!

GPSLocalization of satellite clocks(Beidou timing device,NTPClock server,GPSTime synchronization product)It is a high-performance product developed by Ruicheng CompanyGPSThe combination of Beidou and Rubidium atomic clocksNTPNetwork time server. The product adopts high-precision timing typeGPSDesign of Beidou timing board, high-performance rubidium atomic clock, and large-scale integrated circuit for high-precision outputNTPNetwork time signal, while providing high reliability and high redundancy time reference signal. Using time-frequency measurement and control technology to tame the rubidium atomic frequency standard, enabling precise synchronization of the output frequency of the atomic frequency standardGPSOn the Beidou reference system, high-precision frequency signals are output, and multiple time-frequency signals are synchronously output based on the reference signal, providing reliable frequency reference signals for key departments such as power, telecommunications, broadcasting and television, medical, transportation, petrochemicals, and national defense.

GPSSatellite clock localization, adopting modular design, with the device consisting ofCPUComposed of module, receiving module, power module, LCD module display, and time scale signal expansion module,Users can combine applications according to their actual needs on site.

The receiving module includes

BCode receiving module

GPSSignal receiving module

CDMASignal receiving module

Beidou signal receiving module

OCXOInternal punctuality function module

The time scale signal expansion module includes

Time message (serial port)RS232/485/422）Output module

Pulse output module（PPS/PPH/PPMCan be set)

IRIG-B(DC)Time code output module

IRIG-B(AM)Time code output module

NTP/SNTPNetwork (support)4Physical isolation above the roadIPAddress) output module

The receiving and output modules can be combined according to actual needs.

GPSTechnical parameters of satellite clock

1Network Protocol

NTP v1.v2.v3&v4(RFC1119&1305)

SNTP(RFC 2030)

Telnet（RFC854）

FTP（RFC959）

2Input/output interface

Network port:RJ-45，4The road,10/100Adaptive Ethernet interface, physically isolated

Console：RJ-45，1The road,RS232level

GPSBeidou antenna input:BNC，1road

Optional:10MHzTheBCodeRS232/422/485ThePPSTheDCF77

3Display

The LCD screen displays year, month, day, hour, minute, second, andGPSInformation such as Beidou satellite reception status

The indicator light indicates the power supplyGPSBeidou, Lock, Keep1PPSWaiting for status information

4Time service function

GPSBeidou clock reference mode, network time server

User terminal synchronization timing accuracy:0.5-10ms

User capacity: unlimited

NTPRequest quantity:14000time/second

Can synchronize with othersNTPserver

5TheGPSMaintain time accuracy after Beidou is turned off(option)

Constant temperature crystal oscillator（OCXO）：1ms（72Hour)

Rubidium atomic clock（Rb）：3ms(Year)

6TheGPSreceiver

12Parallel channelGPSreceiver

UTCSynchronization accuracy:50ns（1(b)

receiveL1,C/ACode signal-1575.42MHz

7Beidou receiver

Receiving frequency（BD2 B1）：1561.098±4MHz.

Receiver sensitivity:-157.6dBW；

TTFFCold start:32s,warm start:1s,Lost lock recapture:<1s；

Positioning data update rate:1HzThe2HzThe4HzThe8HzThe16HzOptional;

8TheMTBF≥80000Hour; Average repair time（MTTR）Generally not greater than30Under normal usage conditions, no maintenance is required.

GPSSatellite clock characteristics

1 High time accuracy, reaching20nS.

2 High punctuality accuracy. The internal timekeeping unit of the device adopts time-frequency measurement and control technology and intelligent taming algorithm. The crystal is selected as a high-precision constant temperature crystal oscillator, which makes the timekeeping accuracy of the device better than7*10^-9(0.42MS/minute)In the case of abnormal external time reference, the daily clock self time error shall not exceed0.6millisecond. If a rubidium atomic clock is selected,30The annual self travel time error will not exceed3millisecond.

3 doubleCPUSimultaneously working,32bitCPUDual core processor for improved performance.

4 Supports single star timing mode, suitable for situations where the receiving effect is poor (to be specified when ordering), with roof and window mounted antennas available for selection.

5 adoptGPS/BD2Dual system precision timing, supporting singleGPSSingle Beidou, Double BeidouGPSDouble BeidouGPS/Beidou joint timing has multiple timing methods, which can be modified through serial ports, panel menus, and other means.

6 applicationGPSTiming technology/Beidou timing technology/BCode receiving technology/NTPinput/High stability crystal oscillator timing technology enables multi reference redundant timing and intelligent discriminationGPSSignal, Beidou signal, externalBCodeNTPThe stability and quality of the input time reference signal, and the provision of multiple time reference configuration methods.

7 Having multiple physical isolates that are physically isolated from each other10/100MNetwork ports (each port has its ownMACAddress), multiple ports can be flexibly configured and used in constantly growing and changing network environments; It can also be used in different subnets or physically isolated networks. Additionally, it can also be used asNTPNetwork management is used to enable multiple physically isolated networks to share time server resources.

8 It can provide time services for hundreds of thousands of clients, servers, and workstations simultaneously.

9 supportWINDOWS9X/NT/XP/2000/2003/2008/WINDOWS7/ WINDOWS10TheLINUXTheUNIXTheSUN SOLARISTheIBM AIXTheHP-UXWaiting for the operating system and supportNTPProtocol routers, switchesDVRIntelligent controllers and other network devices.

10 Equipped with power on self-test function, local alarm function, and remote alarm function

11Local display: displays time, date, grid frequency, number of tracking satellites, with display switching function

12Status indication function: dual power status indication, second pulse status indication, synchronous status indication

The above isGPSFor an introduction to satellite clocks, please call for more detailed information.