Local Area Network Automatic Clock Self Innovation

Local Area Network Automatic Clock Self Innovation(Beidou timing equipment,GPSSatellite timing,NTPtime server)Overview

Local Area Network Automatic Clock Self InnovationwithGPSBeidou Satellite System Establishment Time Scale, Output andUTCTime highly synchronized seconds（1PPS）, divided（1PPM）, Time（1PPH）Waiting for pulse information, as well as standard Beijing time hour, minute, second, year, month, and day information, can also be used to measure power frequency quantities, and output date, time, frequency clock, power frequency quantity and other information through serial ports in the corresponding format. The device has standardsRS232TheRS422/RS485TheIRIG-BTheDCF77TheNTP/SNTPTheIEEE1588Protocol and other interface forms. The number of interfaces can be expanded according to requirements.

Shanghai Ruicheng Electric Co., Ltd. adoptsSMTSurface mount technology production, designed with high-speed chips, has the characteristics of high precision, good stability, strong functionality, no accumulated errors, not limited by environmental conditions such as geography and climate, high cost-effectiveness, and easy operation. Widely used in fields such as electricity, petrochemicals, metallurgy, finance, broadcasting and television, transportation, healthcare, and national defense that require time synchronization, timekeeping, and punctuality.

Automatic clock parameters for LAN

1Size:19inch1U/2Uchassis

2Weight:<3.5Kg

3Power supply: AC or DC,110/220V±20% ,Customizable dual power supply

4Working temperature:-20℃～60℃, storage temperature:-40℃～85℃, humidity:95%No condensation

5Power consumption:<20W

6TheGPSreceiver module

High precision timing typeGPSReceiver, timing accuracy better than30ns

Capture time: Cold start<45second warm start<38Instant hot start<5second Re capture<1second

receiveL1,C/ACode signal-1575.42MHz，BNCinterface

track/Capture sensitivity:-173dBW /-185dBW

7Chassis: panel forming, sprayed with high-temperature baking paint for protection.Panel: Aluminum alloy panel, surface brushed and oxidized treatment

8Output interface:

a) 1PPSThe1PPMPulse signal (air contact) or5VActive pulse output

b) 1PPSThe1PPMPulse signal (differential signal, i.eRS-422Level)

c)Time date message serial port（RS232TheRS422/RS485）Output

d) IRIG-B（DC RS－422）Time code output

e) IRIG-B（DC TTL）Time code output

f) IRIG-B(AC)Time code output

g) DCF77signal output

h)NTP/SNTPNetwork timing signal

9Input interface:1roadGPSBeidou signal input,BNCjoint

10Debugging port: onboard10Pin terminal block

11、Impact resistance:10gAcceleration,11msCycle.

12Output signal

The device adopts a fully modular structure design, which not only achieves full board compatibility, but also provides rich signal interface resources and an open special interface design platform, with compatibility capabilities. Can provide multiple pulse signals（1PPS/M/H，TTL, air contact, differential24V/110V/220VActive, optical, and time messages（RS232TheRS422/485(Light)IRIG-BSignal（422TheTTLTheAC(Light)NTP/SNTPProtocol network clock synchronization signalPTP（IEEE1588）Protocol signal10MHzFrequency signals can meet the timing requirements of different devices.

Characteristics of LAN automatic clock device

(1).High time accuracy,The accuracy of the output second pulse reaches30ns.

(2).High reliability of signal reception,Not limited by geographical conditions such as power stations.

(3).Programmable synchronous pulse output in seconds, minutes, and hours,And can output time information through the serial port,It can be conveniently selected from various automation devices.

(4).The signal output of the device is all optically isolated,Strong anti-interference ability.

(5).The device has multiple serial information output and interaction modes to meet the different signal utilization needs of different users.

(6).It has a fault alarm function, with one pair of normally open relay contacts for power loss alarm and fault alarm output.

(7).Rack mounted structure,2U、19Inch standard chassis, easy to install and use.

(8).The device adopts a fully modular plug and play structure design, supporting hot swapping of boards, flexible configuration, and easy maintenance, which will serve as a reference for other signal sources in the future(Jialilu satellite signal and upstream ground linkDCLSsignalNTP/PTPTime reference signal, etc)The access provides convenience and also facilitates the addition of school time ports for future on-site network renovation and expansion.

(9).The device not only achieves full board compatibility, but also provides rich signal interface resources and an open special interface design platform, with compatibility capabilities. The device can provide multiple pulse signalsIRIB-BsignalDCF77Signal, time messageNTP/PTPThe timing signal can meet the timing requirements of different devices.

The above is an introduction to automatic clock synchronization in local area networks.