Home

User Manual of SST-1200 GPS Time Synchronization System

Contents

1. 19 3 1 Configuration of SST 1200 GPS Time Synchronization System 19 3 2 Structure of Equipment and Introduction on Modules 21 3 3 Operating State Indication terret ereneneeen nnee 43 3 3 1 Indicators for standard time synchronization clock 43 3 3 2 Indicators for GPS satellite synchronization clock indicator 45 Equipment Installation and Operation Introduction 46 4 1 Installation of Antenna siennes 46 4 2 Installation Position of the Equipment 48 43 Putinto peratl OMer estorsioni o D E eS ie ce ee date ee 48 4 4 Installation of Lightning Arrester nnee 51 Failures and Maintenance of the Equipment ceceeeeeeeeeeeeeeeeeeeees 52 D TAN Es a RO Tan de de SR eg er nel ee 52 5 2 Holding and Switching of Time Signal 52 5 3 Maintainabilitys 222 serein acer cer eat endian edi edi en ei eet 53 DA OLY artes ee terete D D heared ar tetetcutatetect 53 5 5 Maintenance of the Equipment ss 53 Attachment Type Selection Table for SST 1200 Series GPS Time SYNCMMONIZALION SYSISM acccoseesaceserencbessacdebconcentcesecenecesceest veseeuagescenibencentees olathe 55 User Manual for SST 1200 GPS Time Synchronization System Page 1 SST 1200 GPS Time Synchronization System 1 Purpose and Characteristics of the System SST 1200 GPS Time Syn
2. Drawing 3 7 Schematic Diagram for the Backboard of Timescale Signal Extension Set 4U Drawing 3 8 Schematic Diagram for the Front Panel of Satellite Synchronization Clock 2U 3 2 1 Receiving Module Receiving module is mainly used to receive GPS signals and IRIG B DC signals that accord with IEEE STD 1344 1995 Standard Standard time synchronization clock has the following receiving module for your selection G1 G5 G6 G7 INPUT UNIT timescale signal extension set has the following receiving module for your selection G2 G3 G4 INPUT UNIT User Manual for SST 1200 GPS Time Synchronization System Page 25 For definitions of receiving modules please see the following Table 3 1 Input Module G1 INPUT UNIT receiving module 1 channel GPS input 1 channel IRIG B DC time code input RS 422 G2 INPUT UNIT receiving module 2 channel IRIG B DC time code input RS 422 G3 INPUT UNIT receiving module 2 channel IRIG B DC time code input optical fiber G4 INPUT UNIT receiving module 1 channel CNSS input 1 channel IRIG B DC time code input RS 422 G5 INPUT UNIT receiving module 1 channel IRIG B DC time code input RS 422 G6 INPUT UNIT receiving module 1 channel GPS input G7 INPUT UNIT receiving module 2 channel GPS input G8 INPUT UNIT receiving module 1 chanel IRIG B AC time code input G1 INPUT UNIT GPS ANT AN
3. J C 12 1 11 1 10 09 08 07 06 05 04 03 02 01 3 PULSE UNIT 12 11 10 09 08 07 06 05 04 03 02 01 PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM HBB PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS 01 12 12 channel difference minute amp second pulse output terminal is T User Manual for SST 1200 GPS Time Synchronization System Page 36 and terminal is T P4 PULSE UNIT C 1206 05 04 03 02 017 12 11 10 09 08 07 PULSE UNIT PPM PPM PPM PPM PPM EERE eEE PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS 01 12 12 channel minute amp second pulse TTL output terminal is signal and terminal is GND Rising edge is effective 3 2 6 IRIG B DC Time Code Output Module B1 IRIG B DC UNIT code Output module 12 channel IRIG B DC RS 422 code output B2 IRIG B DC UNIT code Output module 12 channel IRIG B DC code output Passive idle contact B4 IRIG B DC UNIT code Output module 2 channel IRIG B optical fiber code output 4 channel IRIG B DC RS 422 code output B5 IRIG B DC UNIT code Output module 4 channel IRIG B optical fiber code output B6 IRIG B DC UNIT code Output module 12 channel IRIG B DC code output TTL level B1 IRIG B UNIT IRIG B DC time code output module can output 12 channel IRIG B DC time code
4. oe a ZW 3 3 a Li m o0 I iow 10 OO ab oo GL INPUT UNIT P1 PULSE UNIT P1 PULSE UNIT B1 IRIG B UNIT P1 PULSE UNIT P1 PULSE UNIT AL ALAR UNIT PAL POWER UNIT Le o o o x8 x1 X6 x5 Xu x3 x2 x Drawing 3 5 Schematic Diagram for the Backboard of Standard Time Synchronization Clock 2U Drawing 3 6 Schematic Diagram for the Front Panel of Timescale Signal Extension Set 4U User Manual for SST 1200 GPS Time Synchronization System Page 24 put Module Output Module orm Modyje Power Supply Module X6 X5 Xh X3 X2 X1 o o o o oO z JO 710 OK YO O GPS ANT 5 5 5 a 4 PERRE 3 4 J l L ki a q 2 Al 4 oN OFF y UNE OO TIO TIO O OC JO GL INPUT UNIT P1 PULSE UNIT PL PULSE UNIT BL IRIG B UNIT P1 PULSE UNIT PL PULSE UNIT ai maea wit PAL POWER UNIT o o o o o 3 o o o o o o o 0 T OC TOC GOO OP KK QO all SAR J eae ale alin WKY MN a e CAN VINS wS Ti 7 a P1 PULSE UNIT P1 PULSE UNIT PL PULSE UNIT BL IRIG B UNIT PL PULSE UNIT P1 PULSE UNIT P1 PULSE UNIT PL PULSE UNIT o o o o o o o o X16 X15 x xB Output Module
5. Kes J PEN 7 G1 INPUT UNIT Support 1 channel GPS input and 1 channel IRIG B DC time code input RS 422 used for main synchronization clock GPS ANT GPS antenna input corresponding to input channel IN1 IRIG B IN dual hot standby IRIG B RS 422 level input interface corresponding to input channel IN2 terminal is R and terminal is R G2 INPUT UNIT User Manual for SST 1200 GPS Time Synchronization System Page 26 G2 INPUT UNIT Support 2 channel IRIG B DC time code inputs RS 422 used for extension set IRIG B IN1 IRIG B RS 422 level input interface corresponding to IN1 terminal is R and terminal is R IRIG B IN2 IRIG B RS 422 level input interface corresponding to IN2 terminal is R and terminal is R G3 INPUT UNIT 63 INPUT UNIT Support 2 channel ST multimode fiber IRIG B DC time code inputs used for extension set OB1 dual hot standby ST multimode fiber IRIG B input interface corresponding to input channel IN1 OB2 dual hot standby ST multimode fiber IRIG B input interface corresponding to input channel IN2 G4 INPUT UNIT User Manual for SST 1200 GPS Time Synchronization System Page 27 A S G4 INPUT UNIT Support 1 channel BD input and 1 channel IRIG B DC time code input RS 422 used for main synchronization cloc
6. ON 1200 OFF OFF ON 2400 ON ON OFF 4800 ON ON ON 9600 OFF ON ON 19200 User Manual for SST 1200 GPS Time Synchronization System Page 34 3 2 5 Pulse Output Module Pulse output module outputs 12 channel pulses which can be set as 1PPS and 1PPM through jumpers Outputs use idle contacts Pulse output module adopts large pulse current generator which helps the idle contacts be capable to output high precision pulse signals P1 PULSE UNIT 12 11 10 09 08 07 lt 06 05 04 03 02 01FT P1 PULSE UNIT 12 11 10 09 08 07 06 05 04 03 02 O1 PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM EEE BLL PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS 01 12 12 channel minute amp second pulse idle contact output terminal is pole C and terminal is pole R Rising edge is effective and contact withstand voltage is less than 250V P2 PULSE UNIT User Manual for SST 1200 GPS Time Synchronization System Page 35 Y06 05 04 03 02 019 12 11 10 09 08 07 2 PULSE UNIT 12 11 10 09 08 07 06 05 04 03 02 O1 PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM EEE EEL PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS PPS 01 12 12 channel minute amp second pulse 24V active contact output terminal is 24V signal and terminal is 24V ground Rising edge is effective P3 PULSE UNIT
7. Sk IRIG B DC f IRIG 1PPS 1PPM TPP __IRIG B DC P __IRIG B ACIP Drawing 3 2 Block Diagram for Typical Structure of SST 1200 GPS Time Synchronization System 3 2 Structure of Equipment and Introduction on Modules SST 1200 GPS Time Synchronization System is composed of standard time synchronization clock and timescale signal extension set The System adopts modularization design standard time synchronization clock and timescale signal extension set are all composed of CPU module receiving module power supply module LED indicator and output interface module Output interface module includes the followings 1 Time message output module 2 Pulse output module 3 IRIG B DC time code output module 4 IRIG B AM time code output module 5 DCF77 time code output module 6 Frequency measurement data output module User Manual for SST 1200 GPS Time Synchronization System Page 22 7 NTP network output module Interface module can be combined according to real needs 2U equipment supports 5 output interface modules at most and 4U equipment supports 13 output interface modules at most each module has 12 channel signal output For overall structure of the equipment please refer to Drawing 3 3 For schematic diagrams of the front panel and backboard of standard time synchronization clock please refer to Drawing 3 4 and Drawing 3 5 For schematic diagrams of the front panel and backboard of timesc
8. and NOT operation from hour bit 2 to year bit 1 one by one i e XOR NOT check lt A gt is the end of the sent time message ASC II code of Ais 41H For example June 15 2006 time is 23 19 47 synchronizing with satellite and the message is 53H 54H 32H 33H 31H 39H 34H 37H 31H 35H 30H 36H 32H 30H 30H 36H F3H 41H O Message format 2 Specification of Guangdong Power Grid The necessary time information in a message shall adopt the format in Table1 as the following ASC II code Data bit 8 bit start bit 1 bit check bit no check stop bit 1 bit The necessary time information in a message shall adopt the format in Table 1 Table 1 Format of Serial Port Time Message SITih himimis s D D MIYIYIYIYIVIVIPIP cI A TI ep ep dp ao Sie fe iF 8 amp Se EE se se Ee EE IE IE le le Lo Jo Jo 13 3 Jf If JF 5 Je Je eo B IE IS 53 Ip S l gt F IF Jo Jo 2 JF p IE Ie Je e F IF S5 gt Jo fa 3 D S JA e e Z e T Feje N P lg lg l l N L IT Tv N IO p fe D j gt LE lg le 3 S e z le 2 3 a ols 2a D o ion A w F N Of which lt S gt is aligned with front edge of second pulse PPS when the equipment receives satellite signal character S will be sent and when the equipment is out of synchronization character S won t be sent ASC II code of S is 53H lt T gt is the header of time
9. delimited mark uncoded bit fiducial mark year bit 1 delimited mark year bit 2 fiducial mark all in the front are BCD codes uncoded bit delimited mark uncoded bit fiducial mark time quality mark delimited mark uncoded bit fiducial mark uncoded bit delimited mark uncoded bit fiducial mark uncoded bit delimited mark uncoded bit end mark 2 9 1 7 Format of amplitude modulation IRIG B AM Carrier frequency 1kHz Signal magnitude high 10 0 11 0V low accord with the requirement of modulation ratio 2 1 6 1 the default value is 3 1 no load Output impedance 600Q transformer isolated output 2 9 1 8 RJ45 network output Time accuracy Metropolitan Area Network MAN 10mS 100mS Local Area Network LAN 200 US 10mS typical value Output interface RJ45 physical connector Network type Ethernet 10 100M self adapting Output type NTP SNTP FTP system state etc User Manual for SST 1200 GPS Time Synchronization System Page 17 2 10 Warning Signal Power failure warning relay uses square lamps for display directly The allowed external voltage of node DC 220V 110V 24V The allowed current of node 1A 2 11 Stability for the Precision of Internal Timing Clock when GPS is out of Synchronization Oven Controlled Crystal Oscillator OCXO is embedded when it doesn t trace satellite the deviation of output pulse front edge is no more than 1us min 2 12 Standard quoted GJB2242 1994 Gene
10. memory of GPS receiver module Type of the battery lithium battery Service life of the battery no less than 25 000h User Manual for SST 1200 GPS Time Synchronization System Page 10 2 7 3 Data for CNSS receiver A Receiving signal Frequency 2491 75 4 08MHz spectrum zero bandwidth Power of receiving signal C 157 6dBW antenna aperture power of branch signal Angle of elevation 10 75 Frequency deviation for receiving carrier wave lt 500Hz C 157 6dBW Frequency deviation for receiving pseudo code lt 0 2Hz C 157 6dBW B Antenna Receiving polarization method Right hand circular polarization Beamwidth E 10 75 A 0 360 Axial ratio of circular polarization 2 Voltage standing wave ratio lt 1 5 1 C Error rate of receiving signal at 127 6dBm lt 1 x 10 D Sensitivity of receiver 127 6dBm E Timing precision one way lt 100ns 10 2 8 Data for Timing Precision of Output Signal 2 8 1 Output signal from standard time synchronization clock Name of external synchronization No Item source GPS IRIG B DC 1 1PPS accuracy TTL lt 0 2us lt 0 2us 2 1PPS pulse width TTL 78ms 78ms User Manual for SST 1200 GPS Time Synchronization System Page 11 3 1PPS front edge time TTL lt 0 025us lt 0 025us 4 1PPM accuracy TTL lt 0 3us lt 0 3us 5 1PPM pulse width TTL 78ms 78ms 6 1PPM front edge time
11. message and ASCII code of T is 54H to be followed there are hour bit 2 and bit 1 minute bit 2 and bit 1 till the year bit 1 in User Manual for SST 1200 GPS Time Synchronization System Page 14 turns ASCII code of which are 0 9 30H 39H respectively VV is satellite solutions and 30H30H is sent if the solutions are valid and 3FH3FH is sent if the solutions are invalid PP is the quantity of received satellites and ASC II code is 0 9 30H 39H check byte is the result of XOR operation and NOT operation from hour bit 2 to year bit 1 one by one i e XOR NOT check lt A gt is the end of the sent time message and ASCII code of Ais 41H Message sending time once a frame per second 2 9 1 2 Content and format of frequency output data Communication rate 9600b s Data bit 8 bit data are compressed BCD codes and characters are ASCII codes Start bit 1 bit stop bit 1 bit check bit none H a Hour Minute Second Year Year Month Day D1D D2D2 D3D3 D4D4 DsDs FF F1F1 F2F2 Checksum LF 12 3 4 5 6 7 8 9 10 11 12 13 14 1 16 17 18 19 19 bytes in total Among them effective data adopt compressed BCD code others are all ASC II code H and a bytes are the start sign of data D D the current adopted time source channel number and equipment status OOH indicates timing 1AH indicates 1 channel GPS 2AH indicates 2 channel GPS 1BH indicates 1 channel IRIG B 2BH indicates 2 channel IRIG B EO indi
12. of 2 5V 10V Modulating ratio is 3 1 with an input impedance of 600 ohm no joint grounding for transformers User Manual for SST 1200 GPS Time Synchronization System Page 29 G8 INPUT UNIT RXD receiving data of B code year setting RS 232 TXD sending data of B code year setting RS 232 GND signal grounding for B code year setting RS 232 3 2 2 Alarm Module 1 channel 1PPS 1PPM TTL outputs 1 channel IRIG B RS 422 output 1 channel RS 232C serial port A2 ALARM UNIT 4 channel alarm contact outputs RAAT UNIT 1 cahnnel 1PPS 1PPM 1PPH TTL output Alarm 2 channel alarm contact outputs Module J e e A1 ALARM UNIT AL ALARM UNIT PPS PPM PPH testing interface terminal for signal terminal for ground TTL level Monitor the alarm contact output of running state including User Manual for SST 1200 GPS Time Synchronization System Page 30 POWER ALARM power supply failure alarm IN1 ALARM the first channel time source signal abnormality alarm IN2 ALARM the second channel time source signal abnormality alarm DEVICE ALARM device self check abnormality alarm Relay close alarm state Relay open normal state A2 ALARM UNIT A2 ALARM UNIT PPS PPM PPH testing interface terminal for signal terminal for ground TT
13. 30 mm x Height 110 mm Installation method of base male pipe thread with inner diameter of 24 mm x Height 60 mm Installation position of base roof with most sky visible Weight including installation base 3 kg Cable RG 59 RG 58 type standard length is 30m or specified by user 2 2 Environmental Condition 2 2 1 Operational environment for mainframe Working temperature 25 C 55 C Storage temperature 40 C 85 C Humidity 5 95 no dew 2 2 2 Operational environment for antenna Working temperature 40 C 80 C User Manual for SST 1200 GPS Time Synchronization System Page 6 Storage temperature 45 C 90 C Humidity 100 no dew 2 3 Electromagnetic Compatibility The System can work normally under electromagnetic conditions in protection rooms and control rooms of transformer substations It meets the requirements of related specifications in Electromagnetic Compatibility for Industrial process Measurement and Control Equipment GB T 13926 1992 up to Grade III gt Insulation property GB T13926 2002 Grade II gt Resistance to high frequency interference GB T 15153 1 1998 Grade III IV gt Resistance to fast transient disturbance GB T 17626 4 1998 Grade III gt Resistance to electrostatic discharge interference GB T 15153 1 1998 Grade III gt Resistance to power frequency magnetic field interference GB T 17626 8 1998 Grade V gt Resistance to pulse magnetic field interfere
14. 8A output 12V 1 5A output 12V 1A output input PA2 2U or 4U POWER UNIT 220V AC 220VDC input dual power supplies 5V 8A output 12V 1 5A output 12V 1A output PA3 2U POWER UNIT 220V AC 220VDC 110VDC single power supply SV 4A output input User Manual for SST 1200 GPS Time Synchronization System Page 57 Alarm Module A1 ALARM UNIT 4 channel alarm contact output 1 channel 1PPS 1PPM 1PPH TTL output A2 ALARM UNIT 2 channel alarm contact output 1 channel 1PPS 1PPM TTL output 1 channel IRIG B RS 422 output 1 channel RS 232C serial port NTP Network Output Module N1 NTP SERVER UNIT single network interface module Occupy three slots N3 NTP SERVER UNIT three network interfaces module Occupy three slots N5 MONITOR UNIT single network interface module Occupy one slot N6 NTP SERVER UNIT Occupy one slot Frequency Measurement Module F1 FREQ UNIT 1 channel frequency input 2 channel RS 232C serial output 1 channel RS 422 serial port output port 1 All modules can be provided according to the special requirements of customers 2 The standard length of antenna is 30m please give a clear indication for prolonged antenna when order The prolonged antenna includes 50m 100m and 150m User Manual for SST 1200 GPS Time Synchronization System Page 58 Attache
15. B DATE Year Month Day If two channels are all invalid the equipment will switch to time keeping and display TIME Hour Minute Second DATE Year Month Day Meanwhile trigger alarm signal User Manual for SST 1200 GPS Time Synchronization System Page 51 4 4 Installation of Lightning Arrester To ensure SST 1200 GPS time synchronization system with perfect lightning protection measures GPS antenna can be installed with lightning arrester option User Manual for SST 1200 GPS Time Synchronization System Page 52 5 Failures and Maintenance of the Equipment 5 1 Alarm 5 1 1 Standard time synchronization clock Standard time synchronization clock may output the following alarm signals 1 Power supply failure 2 External time reference signal blackout equipment failure alarm 5 1 2 Timescale signal extension set Timescale signal extension set may output the following alarm signals 1 Power supply failure 2 External time reference signal blackout equipment failure alarm The type of electric interfaces for standard time synchronization clock and timescale signal extension set are relay idle contacts contact capacity 250V 1A 5 1 3 Alarm display The Equipment can identify whether there is external synchronization signal input If the input external synchronization signal is blackout both standard time synchronization clock and timescale signal extension set will trigger alarm signal and
16. CD indicates date time and external synchronization information 13 Function of power grid frequency measurement 14 The multi satellite system input and the seamless switching between different systems ensure the safety and reliability of time service system At present it supports GPS CNSS and GLONASS 15 Support NTP Network Time Protocol Version 4 16 Applicable to more networking methods standby methods host amp client methods etc with a flexible and variable networking mode Adaptable to dual clock or multi clock standby master slave clock etc User Manual for SST 1200 GPS Time Synchronization System Page 4 2 Technical Data 2 1 Physical Parameters 2 1 1 Cabinet Standard time synchronization clock and timescale signal extension set all use standard 19 rack cabinet which can be installed securely on the column in distribution board with a height of 2U or 4U The enclosure of the cabinet has a reliable ground point Overall dimension 435mm W x 260mm L x 89 mm H 2U 435mm W x 260mm L x 178mm H 4U Color computer gray RAL 7032 or designated by user Weight 5kg 2U cabinet 4U cabinet User Manual for SST 1200 GPS Time Synchronization System Page 5 2 1 2 Antenna Receiving antenna matches with installation base Size of antenna Diameter 95 mm x Height 128 mm Dimension of base 90 x
17. IT code output module 4 channel IRIG B optical fiber code output can be set as PPS User Manual for SST 1200 GPS Time Synchronization System Page 56 B6 IRIG B DC code output module UNIT 12 channel IRIG B DC TTL level code output P1 PULSE UNIT pulse output module 12 channel minute or second settable pulse interfaces passive idle contact output Contact voltage of each channel P2 PULSE UNIT pulse output module can be connected to 24VDC or 250VDC 12 channel minute or second settable pulse interfaces 24V active idle contact output P3 PULSE UNIT pulse output module 12 channel minute or second settable pulse interfaces difference level RS 422 output P4 PULSE UNIT pulse output module 12 channel minute or second settable pulse interfaces TTL level output S1 SERIAL UNIT time message output module 6 channel time message RS 232 serial port output 6 channel time message RS 422 serial port output Baud rate can be set S2 SERIAL UNIT time message output module 6 channel time message RS 232 serial port output 6 channel time message RS 422 serial port output Baud rate can be set and message is customized D1 DCF77 UNIT output module 12 channel DCF77 contact code output passive idle Power Supply Module PA1 2U or 4U POWER UNIT 220V AC 220VDC 110VDC single power supply 5V
18. L level IRIG B 422 1 channel RS 422 level IRIG B output terminal is T and terminal is T COM RS 232 1 channel RS 232C serial port message output terminal is TXD and terminal is GND please see Section 2 9 1 2 for message format Monitor the alarm contact output of running state including POWER ALARM power supply failure alarm GPS ALARM GPS time source signal abnormality alarm Relay close alarm state Relay open normal state User Manual for SST 1200 GPS Time Synchronization System Page 31 3 2 3 Power Supply Module Power supply module adopts wide voltage range and can be connected directly to 110VDC 220VDC or 220VAC voltage Table 3 3 Definitions for Terminals in Power Supply Module Power supply input Description L1 The first power supply 220 110V DC or 220VAC L N1 The first power supply 220 110V DC or 220VAC N L2 The second power supply 220 110V DC or 220VAC L N2 The second power supply 220 110V DC or 220VAC N Casing ground PA1 POWER UNIT ON OFF AC DC 100V 265V PAL POWER UNIT Input 220V AC 220VDC 110VDC single power supply Output 5V 8A output 12V 1 5A output 12V 1A output PA2 POWER UNIT User Manual for SST 1200 GPS Time Synchronization System OFF AC DC 100V 265V L1 N1 L2 N2 PA2 POWER UNIT OTS Nie om Input 220V AC 220VDC 110VDC du
19. TTL lt 0 025us lt 0 025us 7 IRIG B DC accuracy lt 0 3us lt 0 35us 8 IRIG B AM accuracy lt 5us lt 5us 9 Stability of timing clock lt 1us min Measurement precision for the 0 01Hz i frequency of power grid 11 NTP network time precision lt 10ms typical value 2 8 2 Output signals from timescale signal extension set Name of external synchronization No Item source IRIG B DC _1 IRIG B DC _2 1 1PPS accuracy TTL lt 0 4us lt 0 4us 2 1PPS pulse width TTL 78ms 78ms 3 1PPS front edge time TTL lt 0 025us lt 0 025us 4 1PPM accuracy TTL lt 0 4us lt 0 4us 5 1PPM pulse width TTL 78ms 78ms 6 1PPM front edge time TTL lt 0 025us lt 0 025us 7 IRIG B DC accuracy lt 0 5us lt 0 5us 8 IRIG B AM accuracy lt 6us lt 6us 9 Stability of timing clock lt 1us min Measurement precision for the 0 01Hz frequency of power grid 11 NTP network time precision lt 10ms typical value User Manual for SST 1200 GPS Time Synchronization System Page 12 2 9 Interface Specification 2 9 1 Standard serial data interface one way EIA standard RS 232 RS 422 485 interface 2 9 1 1 Content and format of time output data O Message format 1 specification of East China Power Grid Output once per second one frame each frame includes a mark to indicate the synchronization with second pulse front edge The content of a frame is as
20. User Manual of SST 1200 GPS Time Synchronization System E Point Electronics GmbH Please read the manual detailed before application Please keep the manual Please understand the content Please contact us anytime if anything of our equipment doubts you 6 Contents Purpose and Characteristics of the System 1 TST ARUP DOS Cet ete seer cent ae at ah LE eek it aia ae rsd oh NN allt oS aed NG Ras aN a ae 1 1 2 Characteristics see re ner er Ten ere et em ne re te 2 Technical Data derreter ee epee e E EEEE EEE EEEE EE E NEEESE ENCE EER GETE en 4 2 1 Physical Parameters iii 4 2 2 Environmental Condition sie 5 2 3 Electromagnetic Compatibility ecccccececccceeeeeeeeeeeeeeeeeseneeeeeeseeeeeeeeaeeeesenneeeeseees 6 ZA POwWer SUPPLY ire dee ee en ren eee een etre ie re a ed ten en ee ees 6 2 5 Mean Time Between Failures MTBF us 7 2 6 Input and Output Interfaces for Time Signals 7 2 7 Data for Core GPS Receiver of Standard Clock Equipment 9 2 8 Data for Timing Precision of Output Signal 10 2 9 Interface Specifications 12 2 10 Warning Signal ass ass stone attend heel sels 17 2 11 Stability for the Precision of Internal Timing Clock when GPS is out of Synchronization isssrrtedertantent tie fever EE render eden antibes 17 2 12 Standard quoted is 17 SST 1200 GPS Time Synchronization System
21. al for SST 1200 GPS Time Synchronization System Page 43 COM1 1 channel RS 232C setting port for network address subnet mask and gateway DB 9M interfaces Pin 2 pin for receiving data RS 232C Pin 3 pin for sending data RS 232C Pin 5 signal ground Ntp1 1 channel SNTP RJ 45 network interfaces for network module 1 RUN running indicator for network module 1 flashing module runs normally on or off module runs abnormally LINK indicator for network connection green light is on for connection green light is off for connectionless 3 3 Operating State Indication 3 3 1 Indicators for standard time synchronization clock The panel of standard time synchronization clock has the following operating state indicators 1 Power supply normal indication 2 If external time reference signals are locked indicate all locked external time reference signals 3 Working conditions normal or abnormal of each channel output signals The panel of timescale extension set has the following operating state indicators 1 Power supply normal indication 2 If external time reference signals are locked indicate all locked external time reference signals User Manual for SST 1200 GPS Time Synchronization System Page 44 Q QO Le q akr s n GEL AL nd 1 234567 1 LCD window indicate year month day hour minute second and number of locked satellites 2 POWER power supply indicator l
22. al power supplies Output 5V 8A output 12V 1 5A output 12V 1A ouput PA3 POWER UNIT ON OFF AC DC 100V 265V PA3 POWER UNIT Input 220V AC 220VDC 110VDC single power supply no Output 5V 3A output 3 2 4 Time Message Output Module Page 32 Time message output module outputs information of data Beijing standard time and so on via serial port it has 6 cahnnel RS 232 interfaces and 6 channel RS 422 interfaces the communication baud rate of its serial port can be set as 600 1200 2400 4800 9600 and 19200bps via DIP switch Time message output module adopts parallel processing technology the sending time of message is the timing edge of second with an error no more than 0 3ms User Manual for SST 1200 GPS Time Synchronization System 01 06 6 channel RS 422 level serial port output with terminal of T and terminal of T 07 12 6 channel RS 232 serial output with terminal of TXD and terminal of GND Dismantling the front panel baud rate of serial port output can be set Communication rate of serial port option 300bps 600bps 1200bps O 06 05 04 03 02 01 J 12 11 10 09 08 07 C n pan n S1 SERIAL UNIT 2400bps 4800bps and 9600bps 3 2 1 Baud rate ON OFF OFF 300 OFF OFF OFF 600 ON OFF
23. ale signal extension set please refer to Drawing 3 6 and Drawing 3 7 CPU Module Pulse Output Module Receiving Module Microprocessor FPGA Large pulse current generator GPS receiver IRIG B DC code Photoelectric isolation circuit GPS synchronization circuit input interface IRIG B DC output Pulse generation circuit Time Message Output Module Phase lock loop interface Microprocessor IRIG B code generation circuit IRIG B code decoding circuit Photoelectric isolation circuit Decoding control circuit Closed loop control circuit Oven Controlled Crystal Oscillator Power Supply Module Alarm Circuit IRIG B DC Time Code Output Module RS 422 485 interface TTL interface 1PPM 1PPS TTL Output Photoelectric isolation circuit IRIG B AM Time Code Output Module Non overshoot IRIG B AM code generation circuit Transformer isolation Drawing 3 3 Overall Structure of the Equipment User Manual for SST 1200 GPS Time Synchronization System Page 23 Drawing 3 4 Schematic Diagram for the Front Panel of Standard Time Synchronization Clock 2U Input Module Output Module Alarm Module Power Supply Module t i o o o C A 7 J Q GPS ANT F is a 4 1 dE o 0 u 4 Jg 4 J Jg 7 J w an
24. annel RS 232C serial port output and 1 channel RS 422 serial port output For definitions of terminals see the following coma coma coy FREQ IN NA fay F1 FREQ UNI FREQ IN frequency measurement input interface that can be connected to 220V AC and 100V AC bus voltage COM1 COM2 2 channel RS 232C frequency data serial port output terminal is TXD and terminal is GND COM3 1 channel RS422 frequency data serial port output terminal is T and terminal is T User Manual for SST 1200 GPS Time Synchronization System Page 41 3 2 9 Network Module For module setting and relevant software please refer to CD N1 NTP SERVER UNIT Single network interface module N3 NTP SERVER UNIT NTP Network Three network interfaces module Output N5 MONITOR UNIT Module Single network interface module N6 NTP SERVER UNIT Single sntp network interfaces Occupy one slots module Occupy three slots Occupy three slots Occupy one slots N1 N3 N4 NTP SERVER UNIT can output time in accordance with standard network time synchronization protocols of NTP SNTP etc and upload the running states of network time servers to the monitoring room via network interfaces NS MONITOR UNIT only can upload the running states of network time servers to the monitoring room via the network interface N1 N3 NTP SERVER UNIT N1 Suppo
25. cate that no switching module information is received El indicate no timing module information is received E2 indicate no frequency module information is received D D number of the first time source channel of which 1AH indicates 1 channel GPS and 1BH indicates 1 channel IRIG B D D OOH indicates that time source is disappeared or invalid BOH indicates that time source is valid O3H 12H indicates that the number of satellites and the time source are valid User Manual for SST 1200 GPS Time Synchronization System Page 15 D D4 number of the second time source channel of which 2AH indicates 2 channel GPS and 2BH indicates 2 channel IRIG B D D OOH indicates that time source is disappeared or invalid BOH indicates that time source is valid O3H 12H indicates that the number of satellites and the time source are valid FF The integral part for the number of wave cycles compressed BCD code F1F1 The first and second decimals for the number of wave cycles compressed BCD code F2F2 The third and fourth decimals for the number of wave cycles compressed BCD code Check sum The result of XOR operation from byte hour to byte F2F2 one by one LF newline data end mark OAH Message transmission time output once a frame per second 2 9 1 3 1PPS output 1 Pulse width 78ms 2 Static idle contact optical isolation output Permissible external voltage between idle contact C and E DC 24V 220V Permissible curren
26. chronization System is designed in accordance with Technical Specifications for Unified Clock System of East China Power Grid Technical Specifications for GPS Time Synchronism System of Transformer Substation in Guangdong Power Grid and Technical Principle and Operation Management Specifications for GPS Time Synchronization System of Shanghai Power Grid It is composed of standard time synchronous clock and timescale signal extension set applicable for panel composition combinedly or independently Timescale signal extension set includes pulse time message DCF77 B code and NTP extension modules the set can be combined according to real needs By utilizing the synchronization signal second and time information of GPS Global Positioning System or IRIG B DC code the System can provide accurate time information and time synchronization signals for various electric power systems and automation equipment such as dispatching automation system microcomputer relaying protection equipment failure oscillograph event sequence recording device remote control unit computer data interchange net lightning positioning system etc 1 1 Purpose Main purposes of SST 1200 GPS Time Synchronization System are as the followings 1 Provide standard time and time synchronization signals for electric power systems 2 Work as a wall clock for electric power companies electric power bureaus of all levels and the corresponding dispatching stations
27. d it is capable for synchronization running with UTC by a certain precision SST 1200 GPS Time Synchronization System is composed of standard time synchronization clock and timescale signal extension set which is applicable for panel composition combinedly or independently Combined panel shows in the following Drawing 3 1 User Manual for SST 1200 GPS Time Synchronization System Page 20 SST 1200 GPS Time Synchronization System SU Faceplate Dp U Faceplate nl 1 2U Synchronization Clock nl 2 2U Synchronization Clock epy U Faceplate 6U Faceplate 6U Faceplate 6U Faceplate LT 6U Faceplate Er Frontispiece Drawing 3 1 Schematic Diagram for Combined Panel in SST 1200 GPS Time Synchronization System When it is used in 500kV 220kV substation the block diagram of typical structure shows in the following Drawing 3 2 User Manual for SST 1200 GPS Time Synchronization System Page 21 Antenna X 2 Lightning Arrester nlX 2 SST 1200 GPS Synchronization Clock Fiber X 2 Fiber X 2 Fiber X 2 n2 n2 m H H amp SKV Zeta ee n a o e timescale signal extension set timescale signal extension set timescale signal extension set l OOKV Zeta QO 220KV Zeta FT NI g
28. d pages User Manual for SST 1200 GPS Time Synchronization System Page 59 User Manual for SST 1200 GPS Time Synchronization System Page 60 Warranty Card Kept by User Name of user s Purchasing company date Serial Product type number Service Record Service User Date Disposal to failure parts person signature Warranty introduction 1 Users who purchased the products of YESTAR will enjoy three guarantee services according to Provisions on the Liability for the Repair Replacement and Return of Some Commodities issued by relevant national department on August 25 1995 2 When failures occur under normal operation if the equipment is not dismantled or repaired by yourself without obvious damage and with good packaging and complete accessories you will share a replacing service within three months repairing service within one year and maintenance service during the service life of the equipment 3 After guarantee period is expired we will provide repair service for you by only charging on the cost of components and fittings 4 For replacing or repairing please bring with you the warranty card Please shear from here and send it back to Customer Service Department of POINT User Profile Name of user s Purchasing company date ial Product model ele number Contact Contact telephone person
29. dard time synchronization clock and extension set are composed of CPU module receiving module power supply module alarm module and output interface module Type Description Basic Input Output Configuration CPU C1 CPU UNIT TCXO and OCXO with AC B code Processing for selection Module C2 CPU UNIT Common crystal oscillator and TCXO without AC B code for selection 1 channel GPS input ee aie i channel IRIG B DC time code input RS 422 G2 INPUT UNI 2 channel IRIG B DC time code Receiving module input RS 422 G3 INPUT UNI 2 channel IRIG B DC time code Receiving module input optical fiber G4 INPUT UNIT 1 channel CNSS input Input Module Receiving module e aa AR ERP Omer Bode input RS 422 G5 INPUT UNIT 1 channel IRIG B DC time code Receiving module input RS 422 oe DRE SDI 1 channel GPS input Receiving module INE OT SMI 2 channel GPS input Receiving module G8 INPUT UNIT 1 channel AC IRIG B time code Receiving module input B1 IRIG B DC UNIT 12 channel IRIG B DC RS 422 Code output module code output B2 IRIG B DC UNIT 12 channel IRIG B DC code output Code output module Active 24V idle contact Time Code nen sein oo al 12 channel IRIG B AC code output Output Module B4 IRIG B DC Code output module UNIT 2 channel IRIG B optical fiber code output can be set as PPS 4 channel IRIG B DC RS 422 code output B5 IRIG B DC UN
30. enna shall face the whole sky to include all visualized satellites User Manual for SST 1200 GPS Time Synchronization System Page 48 overhead under direct vision No matter how much of the caliber of antenna it shall be set in the highest position of the local wide and open area to avoid the obstruction to antenna beams by hillsides woods higher buildings iron towers high pressure transmission lines etc The sufficient visual field shall be available in the direction of main antenna beam and the visual angle in front of antenna shall be wide as possible The general requirement is that the included angle between the antenna base point and the highest point of obstacle shall be less than 3 degrees c The installation location of antenna shall keep away from the place with a draught to reduce the wind load on the antenna In the areas with much lightning storm the installation location of antenna shall keep away from the site with much lightning strikes meanwhile it shall take various lightning protection measures d The use of lightning arrester option to protect the antenna from lightning strike the top of the antenna shall be equipped with lightning arrester Prior to the thunder storm season check the lightning protection ground system carefully You can choose the special lightning arrester of YESTAR Company 4 2 Installation Position of the Equipment Rules for selecting the installation position for the equipment 1 reduce
31. faces 2 Definable 1PPS and 1PPM pulse signal idle contact or 24V active pulse output 2 Definable 1PPS and 1PPM pulse signal differential signal i e RS 422 level 3 Time date message serial port RS 232 or RS 422 output 4 IRIG B DC RS 422 time code output 5 IRIG B DC TTL time code output User Manual for SST 1200 GPS Time Synchronization System Page 9 6 IRIG B AM time code output 7 DCF77 idle contact time code output 8 Frequency measurement data output 9 NTP network output The outputs are isolated with each other and the number of various synchronization signals can be combined according to real needs each signal output interface can be only connected to one device that need time service When there is no requirement on joint grounding each channel of IRIG B DC time code RS 422 output can be connected to 8 devices that need time service 2 7 Data for Core GPS Receiver of Standard Clock Equipment 2 7 1 Data for GPS receiver Frequency 1575 42MHz L1 signal Sensitivity of receiver lt 165 dBW Synchronization tracing Up to 12 satellites For cold start of the equipment no less than 3 satellites Acquisition time reacquisition time lt 2s During hot start of the equipment it is lt 15s During cold start of the equipment it is lt 45 s 1PPS precision better than 200ns absolute value 2 7 2 Internal battery The internal battery provides a backup power supply for the
32. fter power supply is switched on 3 PPS second pulse indicator which will flash once per second 4 PPM minute pulse indicator which will flash once per minute 5 PPH hour pulse indicator which will flash once per hour 6 GPS positioning indicator that will light on during GPS synchronization 7 ALARM alarm indicator which will light on when there is any abnormality of the system User Manual for SST 1200 GPS Time Synchronization System Page 46 4 Equipment Installation and Operation Introduction 4 1 Installation of Antenna Installation method for antenna ent User Manual for SST 1200 GPS Time Synchronization System Page 47 NN T ij W 290mm 2x 99 W amp B Z aa A l JL 26 a n fi ji i QE Ko 2x69 Lt Se S SA a 7 Ve VS o oy S AS N 1 2 3 Installation of 50 meters Antenna a To ensure GPS synchronization clock can trace as more satellite signals as possible the mushroom like head of the antenna must be twisted on the antenna rack and use expansion bolt to fix the rack in a place with a wider visual field The turning radius for the laying of antenna cable shall not be too small the length of antenna cable is designed strictly according to antenna gain which shall not be cut prolonged shortened or installed with connectors b The ant
33. hold the time till the synchronization signals are received again At the same time LED indicator will indicate which channel of external synchronization signal gives the alarm 5 2 Holding and Switching of Time Signal Standard time synchronization clock and timescale signal extension set all have time holding units When they receives external time reference signals master clock will be synchronous with external reference signals when they User Manual for SST 1200 GPS Time Synchronization System Page 53 cannot receive the external time reference signals master clock will keep a certain accuracy of travel time therefore its output time synchronous signal can still keep a certain accuracy The accuracy of the time holding units in standard time synchronization clock and timescale signal extension set is better than 1us min When the external time reference signal is restored standard time synchronization clock and timescale signal extension set will switch back to normal working state automatically with a switching time less than 0 1s During switching there is no error of time synchronization signal output by master clock no error code in time message and no more or less sending of pulse codes 5 3 Maintainability By replacing the damaged parts Mean Time To Repair MTTR for standard time synchronization clock and timescale signal extension set is no more than 30min 5 4 Safety Various input and output interfaces for s
34. ight when power supply is switched on 3 PPS second pulse indicator flash once per second 4 5 TIME SOURCE indicate the source of current time reference signal and include two indicators of IN1 and IN2 If IN1 indicator is on the equipment acquires time information by receiving signals from the channel IN1 if IN2 indicator is on the equipment acquires time information by receiving signals from the channel IN2 if both indicators are off the equipment holds time information by its internal clock 6 7 CHANNEL ALARM monitor if the equipment can receive time signals normally If IN1 indicator is on the equipment doesn t receive the synchronized IN signal if IN2 indicator is on the equipment doesn t correctly receive IN2 signal LCD window displays the standard Beijing time For master clock when IN1 and IN2 time codes are all received normally IN1 time source will take the priority and IN2 time will be cancelled automatically When IN1 signal cannot be received normally the equipment will receive the time code of IN2 channel to get the standard time User Manual for SST 1200 GPS Time Synchronization System Page 45 3 3 2 Indicators for GPS satellite synchronization clock indicator 23 4 5 6 7 1 Liquid Crystal Display LCD window indicating standard Beijing time and number of locked satellites 2 POWER power supply indicator which will light on a
35. is GPS and XX is the number of locked satellites Data on liquid crystal display LCD will refresh once per second the timing edge If GPS signal is invalid and there is IRIG B signal input it will display TIME Hour Minute Second 2B DATE Year Month Day If GPS signal is invalid and there is no IRIG B signal input the equipment will switch to time keeping and display TIME Hour Minute Second DATE Year Month Day And trigger alarm signal User Manual for SST 1200 GPS Time Synchronization System Page 50 4 3 2 Timescale signal extension set After IRIG B signal input that complies with IEEE STD 1344 1995 Standard is connected and relevant interface modules are setup turn on the power supply and the equipment is ready to be put into operation Switch on the power supply and the System starts to work Date in solar calendar and Beijing time are displayed TIME Hour Minute Second DATE Year Month Day Data on liquid crystal display LCD will refresh once per second the timing edge If IRIG B DC time code RS 422 input channel 2 is invalid but IRIG B DC time code RS 422 input channel 1 is valid the following will be displayed TIME Hour Minute Second 1B DATE Year Month Day If IRIG B DC time code RS 422 input channel 1 is invalid but IRIG B DC time code RS 422 input channel 2 is valid the following will be displayed TIME Hour Minute Second 2
36. k BD ANT BD antenna input corresponding to input channel IN1 IRIG B IN dual hot standby IRIG B RS 422 level input interface corresponding to input channel IN2 terminal is R and terminal is R RXD data receiving in CNSS initialization setting RS 232 TXD data sending in CNSS initialization setting RS 232 GND signal grounding in CNSS initialization setting RS 232 G5 INPUT UNIT G5 INPUT UNIT Support 1 channel IRIG B DC time code input RS 422 used for extension set IRIG B INT IRIG B RS 422 level input interface terminal is R and terminal is R G6 INPUT UNIT User Manual for SST 1200 GPS Time Synchronization System Page 28 GPS ANT i x N j Ne 7 G6 INPUT UNIT Support 1 channel GPS input used for common satellite synchronization clock GPS ANT GPS antenna input G7 INPUT UNIT GPS ANTI a ae GPS ANT2 PTT KA G7 INPUT UNIT Support 2 channel GPS inputs used for main synchronization clock GPS ANT1 the first channel of GPS antenna input corresponding to input channel IN1 GPS ANT2 the second channel of GPS antenna input corresponding to input channel IN2 G8 INPUT UNIT Support 1 channel IRIG B DC time code input used for extension set IRIG B IN IRIG B RS 422 level input interface no distinguishing between positive terminal and negative terminal AC B code with an amplitude
37. mal conditions second synchronization signal from GPS will work as the external time reference of master clock and IRIG B DC time code User Manual for SST 1200 GPS Time Synchronization System Page 8 RS 422 as back up When GPS falls out of synchronization time signal received by the first IRIG B interface will take the priority to be the external time reference of master clock GPS satellite synchronization clock only supports one GPS interface 2 Timescale signal extension set Timescale signal extension set is used to provide necessary extension units to meet the requirements of different service situations when time synchronization signals from standard time synchronization clock is not sufficient Time signal inputs of timescale extension set have 2 channel IRIG B DC time code RS 422 inputs When timescale extension set is only connected with 1 channel IRIG B DC time code RS 422 input the input channel can be IRIG B DC Input 1 or IRIG B DC Input 2 When timescale signal extension set is connected to 2 channel IRIG B DC time code inputs IRIG B DC RS 422 input 1 will work as the external time reference of this timescale extension set and IRIG B DC RS 422 input 2 as back up 2 6 2 Output of time signals Standard time synchronization clock and timescale signal extension set can provide the following time synchronization signal outputs 1 1PPS and 1PPM pulse signal TTL level outputs as detection inter
38. mply with IEEE STD 1344 1995 Standard User Manual for SST 1200 GPS Time Synchronization System Page 39 Y lt 06 05 04 03 02 01 gt 12 11 10 09 08 07 B6 IRIG B UNIT _ 01 12 12 channel IRIG B TTL output terminal is signal and terminal is GND 3 2 7 IRIG B AM Time Code Output Module IRIG B AM time code output module can output 12 channel IRIG B AM time code which can be set as 2 1 6 1 with a default value of 3 1 IRIG B AM time code output module adopts non overshoot IRIG B AM code generation technology with precision of IRIG B AM time code up to 5us For definitions of terminals see the following el 06 05 04 03 02 01 12 11 10 09 08 07 B3 IRIG B UNIT 01 12 12 channel IRIG B AC output 3 2 8 DCF77 Time Code Output Module D1 DCF77 UNIT output module can output 12 channel DCF77 time code For definitions of terminals see the following User Manual for SST 1200 GPS Time Synchronization System Page 40 12 11 10 09 08 07 T 06 05 04 03 02 019 D1 DCF77 UNIT 01 12 12 channel DCF77 idle contact output terminal is Pole C and terminal is Pole E 3 2 9 Frequency Measurement Module F1 FREQ UNIT frequency measurement module provides 1 channel frequency measurement signal input 2 ch
39. nce GB T 17626 9 1998 Grade V gt Resistance to damped oscillation magnetic field interference GB T 17626 10 1998 Grade V gt Resistance to radio frequency electromagnetic field radiated interference GB T 17626 3 1998 Grade III gt Resistance to surge interference GB T 15153 1 1998 Grade III 2 4 Power Supply SST 1200 GPS Time Synchronization System adopts AC and DC power supplies User Manual for SST 1200 GPS Time Synchronization System Page 7 2 4 1 AC power supply Rated voltage single phase 220V permissible deviation 20 20 Frequency 50Hz with a permissible deviation of 3Hz Waveform sine waveform distortion no more than 5 2 4 2 DC power supply Rated voltage 220V 110V Permissible deviation 20 20 Ripple coefficient lt 5 2 4 3 Power consumption No more than 50W 2 5 Mean Time Between Failures MTBF Maintenance free under normal service conditions MTBF no less than 50 000h under normal service conditions 2 6 Input and Output Interfaces for Time Signals 2 6 1 Receiving input of time signals 1 Standard time synchronization clock Standard time synchronization clock has one GPS interface and one IRIG B DC time code RS 422 interface The first IRIG B receives signals from the other standard synchronization clock When standard time synchronization clock receives the GPS satellite time service signal and IRIG B DC time code RS 422 simultaneously under nor
40. on independently which provides convenience for the future extension of GPS time synchronization signals with easy maintenance and management 4 Dual CPU parallel processing time message output technology Time message output adopts dual CPU parallel processing technology The message sending time is timing edge of second s with an error no more than 0 2ms 5 High precision pulse output User Manual for SST 1200 GPS Time Synchronization System Page 3 Pulse output adopts large pulse current generating circuit which is helpful for optoelectronic isolation idle contact to output high precision pulse signal with an error no more than 10us 6 High precision timing clock Adopt closed loop control technique for high precision timing clock and the timing precision can reach 1us min 7 Adopt IRIG B AM code generating technique without overshoot to generate high precision IRIG B AM code with a precision up to 5ps 8 Support optical fiber or cable cascade input and output 9 The signal receiving is with high reliability free from the restriction of the area conditions in power station 10 All signal output ports adopt photoelectrical isolation and resistance to electromagnetic interference is up to Grade Ill 11 Alarm contact output for monitoring the operational status of the System which includes power supply failure alarm external synchronization signal failure alarm and system self checking abnormal alarm 12 L
41. power plants and transformer substations etc User Manual for SST 1200 GPS Time Synchronization System Page 2 1 2 Characteristics 1 High synchronization accuracy with external synchronization clock signal with synchronization accuracy better than 0 2us Adopt multiple synchronization sources self adapting synchronization technology with synchronization accuracy better than 0 2us 2 Redundant structure Support dual GPS hot standby and dual IRIG B hot standby and adopt high precision timing clock Standard time synchronization clock can receive GPS and 1 channel IRIG B code external synchronization signal together which are standby to each other Timescale signal extension set can receive 2 channel IRIG B code external synchronization signals together which are standby to each other Master clock and signal extension set all adopt redundant structure to ensure the reliability and stability of GPS time synchronization system 3 Modularization design various output interfaces and convenience for use The System can output IRIG B AM code and IRIG B DC code that comply with IEEE STD 1344 1995 Standard as well as definable hour minute second pulse idle contact and time message information 12 channels can be included into one group by random combination 2U equipment is capable for 60 channel outputs at most and 4U equipment is capable for 156 channel outputs at most Adopt 4U 19 standard cabinet applicable for panel compositi
42. ral Specifications for Timing Equipment GJB2991 1997 B Time Code Interface Terminal GB T15527 1995 General Specification for Marine GPS Receiver GB11014 1990 Electrical Characteristics of Balanced Voltage Digital Interface Circuits GB T6107 2000 nterface Between Data Terminal Equipment and Data Circuit Terminating Equipment Employing Serial Binary Data Interchange GB T 14429 1993 Telecontrol Equipment and Systems Glossary GB T16435 1996 Telecontrol Equipment and System Interfaces GB T17463 1998 Performance Requirements on Telecontrol Equipment and Systems GB T 13926 2002 Electromagnetic Compatibility for Industrial process Measurement and Control Equipment IEC 870 5 5 Section 6 7 Time Synchronization for Basic Application Functions IEC 870 5 103 Section 7 4 2 Time Synchronization HD 01 2002 Technical Specifications for Time Synchronization System of User Manual for SST 1200 GPS Time Synchronization System Page 18 East China Power Grid Technical Specifications for Time Synchronization System of Shanghai Electric Power User Manual for SST 1200 GPS Time Synchronization System Page 19 3 SST 1200 GPS Time Synchronization System 3 1 Configuration of SST 1200 GPS Time Synchronization System Thanks to GPS Global Positioning System or IRIG B DC code second synchronization signal and time information as well as the equipped high precision timing clock SST 1200 GPS Time Synchronization System is not restrained by zone an
43. rt 1 channel NTP RJ 45 network interface N3 Support 3 channel NTP RJ 45 network interfaces RUN ntpl ntp2 ntp3 10 100M BASE T N3 NTP SERVER UNIT ntp1 ntp2 ntp3 3 channel NTP RJ 45 network interfaces RUN running indicators for network module flashing module runs normally On or off module runs abnormally Jumper ntp1 of network left side board is in On position indicate that NTP service is available if time is applicable i e non alarm state or indicate that NTP User Manual for SST 1200 GPS Time Synchronization System Page 42 service is not available if time is not applicable i e alarm state Off position indicate NTP service is available regardless of whether time is applicable which can be used for commissioning or special purposes N5 MONITOR UNIT The Unit only can upload the running states of network time servers to the monitoring room via the network interface LINK ROL yo STATUS N5 MONITOR UNIT R01 1 channel 10M RJ 45 network interface LINK indicator for network connection green light is on for connection green light is off for connectionless STATUS diagnosis indicator red light is off under normal conditions red light is on or flashing under abnormal conditions N6 NTP SERVER UNIT Support 1 channel SNTP RJ 45 network interfaces COMI RUN NTP1 LINK N6 NTP SERVER UNIT User Manu
44. s that comply with IEEE STD 1344 1995 Standard RS 422 interface User Manual for SST 1200 GPS Time Synchronization System Page 37 output can drive the standard RS 422 devices of no less than 8 sets Q 12 11 10 09 08 07 06 05 04 03 02 01 J Bl IRIG B UNIT 01 12 12 channel IRIG B RS 422 output terminal is T and terminal is B2 IRIG B UNIT IRIG B DC time code output module can output 12 channel IRIG B DC passive idle contact time codes that comply with IEEE STD 1344 1995 Standard a 12 11 10 09 08 07 06 05 04 03 02 01FT O B2 IRIG B UNIT 01 12 12 channel IRIG B idle contact output terminal is Pole C and terminal is Pole E B4 IRIG B UNIT User Manual for SST 1200 GPS Time Synchronization System Page 38 04 03 02 01 y Kes B4 IRIG B UNIT OB1 OB2 2 channel ST multimode fiber IRIG B output interfaces 01 04 4 channel IRIG B RS 422 output terminal is T and terminal is B5 IRIG B UNIT sai B5 IRIG B UNIT O OB1 OB2 OB3 OB4 4 channel ST multimode fiber IRIG B output interfaces which can be set as PPS PPM and serial port message output through internal jumpers B6 IRIG B UNIT IRIG B DC time code output module can output 12 channel IRIG B DC TTL time codes that co
45. t between idle contact C and E Ice lt 100mA 3 TTL level output Load 500 Drive HCMOS 2 9 1 4 1PPM pulse output 1 Pulse width 78ms 2 Static idle contact optical isolation output Permissible external voltage between idle contact C and E DC 24V 220V e Permissible current between idle contact C and E Ice lt 100mA 2 9 1 5 1PPH pulse output 1 Pulse width 78ms 2 Static idle contact optical isolation output Permissible external voltage between idle contact C and E DC 24V 220V User Manual for SST 1200 GPS Time Synchronization System Page 16 e Permissible current between idle contact C and E ICE lt 100mA 2 9 1 6 IRIG B DC time code output IRIG B DC time code outputs a frame per second according to IEEE Std 1344 1995 Standard including 100 code elements and each element is 10ms For pulse width code 2ms width indicates binary system 0 delimited mark or uncoded bit 5ms width indicates binary system 1 and 8ms width indicate 100ms fiducial mark Timing edge of second the front edge rising edge of the second pulse for two continuous fiducial mark pulse with width of 8ms Structure of frame Start mark second bit 1 delimited mark second bit 2 fiducial mark minute bit 1 delimited mark minute bit 2 fiducial mark hour bit 1 delimited mark hour bit 2 fiducial mark the day started from the New Year s Day of the current year bit 1 delimited mark day bit 2 fiducial mark day bit 3
46. tandard time synchronization clock and timescale signal extension set are isolated electrically with each other to reduce the electromagnetic interference to time signal and the impact to each synchronized device When transient duration lt 5min short circuit or grounding is occurred to the various input and output interfaces of standard time synchronization clock and timescale signal extension set they won t result in permanent damage to the equipment 5 5 Maintenance of the Equipment When the equipment is failed please operate according to the following User Manual for SST 1200 GPS Time Synchronization System Page 54 steps 1 Turn on the power switch if no display of LED please check power switch and power input terminal 2 If the equipment indicates abnormity and cannot reset automatically during operation you can close the equipment and restart it 3 If no GPS signal is received after the equipment is switched on more than half an hour please check the installation of antenna for any wrong 4 During operation if time source indicator is off for continuous long time which indicates the equipment is out of synchronization please check the installation of wiring If the problem cannot be solved after the above mentioned check please contact us User Manual for SST 1200 GPS Time Synchronization System Page 55 6 Attachment Type Selection Table for SST 1200 Series GPS Time Synchronization System Stan
47. the length of the antenna as possible in order to ensure the intensity of received GPS satellite signals 2 the equipment shall be installed near the devices that uses clock signals 4 3 Put into Operation 4 3 1 Standard time synchronization clock After GPS antenna is connected and relevant interface modules are setup turn on the power supply and the equipment is ready to be put into operation User Manual for SST 1200 GPS Time Synchronization System Page 49 Switch on the power supply by the mains switch and the LED display shows the date and Beijing time prior to synchronization When the equipment is installed in a new place after energized it need approximately 300 seconds for initialization After initialization the equipment will be synchronous with GPS satellite and display standard Beijing time After initialization as long as the position of the equipment is not moved when reenergized after power supply failure it only needs approximately 45 seconds to restore synchronization with GPS satellite The operation steps for the equipment are as the followings Switch on power supply the System starts to work Display the date of solar calendar and Beijing time prior to synchronization TIME Hour Minute Second DATE Year Month Day When GPS satellite is locked it will display TIME Hour Minute Second XX DATE Year Month Day It indicates that the current external synchronization source
48. the following Synchronization mark frame header hour minute second day month year check byte and end mark all of which are ASC II characters Data transmission rate 600 1200 2400 4800 9600 and 19200bps User can select by himself default value is 9600 bps Start bit 1 bit Number of data bit 8 bit Check bit no check Stop bit 1 bit Format of message is as the following S Tih hi mjm s s D DiI MIMI Y IY JY Y CIA OT T T OO 0 lt K lt lt lt O lt Ig olo s o lo IS cole lo D D m a a o o fe 3 cle Q Q Ix x 3 5 D O sr Al a oo lo le lel Se lS 1 1 oS oO N _ a I l l l gt D N gt JIJ Tl RP OTM ls N g Ds TIT D D o Q N 3 gt O O mt 0 S 9 3 Of which lt S gt is aligned with front edge of second pulse PPS when the equipment receives GPS signal or other external synchronization signal User Manual for SST 1200 GPS Time Synchronization System Page 13 character S will be sent and when the equipment is out of synchronization character S won t be sent ASC II code of S is 53H lt T gt is the header of time message and ASC II code of T is 54H to be followed there are hour bit 2 and bit 1 minute bit 2 and bit 1 till the year bit 1 in turns ASCII code of which are 0 9 30H 39H respectively check byte is the result of XOR operation

Download Pdf Manuals

Related Search

Related Contents

P4811 APPAREIL DE MESURE DE LA PRESSION  User Manual - Howard Computers  Owners Manual  Sihl Barrier Coated 36"  Lantronix EDS4100  Analizador de Potencia y Armónicos Modelo PQ3350  maintenance work on chassis and engine  Samsung DVD-H1080 User Manual    

Copyright © All rights reserved. Failed to retrieve file