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Page 22

GPS Satellite Controlled Clock 6875 - Ver. 04.00

4.3.11 System Byte

This section permits the configuration of additional internal system functions. These are acti-
vated and deactivated by the setting and resetting of a bit.

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Содержание 6875

Страница 1: ...Technical Description GPS Satellite Controlled Clock 6875 Version 04 00 16 07 2008 ...

Страница 2: ...ollows the latest technological standards and safety regulations The device must not be assembled by anyone but trained personnel Please make sure that all the connected cables are laid and fixed properly The device is to be run with the supply voltage stated on the identification plate only Only trained personnel or specialists may operate the device Repair on opened devices must not be carried o...

Страница 3: ...7 4 3 7 Time Zone 18 4 3 8 Changeover time changeover point 19 4 3 9 Position 20 4 3 10 Satellites 21 4 3 11 System Byte 22 4 3 12 Serial Parameters 24 4 3 13 Mode bytes 25 4 3 14 Optical coupler 27 4 3 15 Outputs 29 4 3 16 DCF77 Simulation 30 4 3 17 IRIG B IRIG Time Code 31 4 3 17 1 IRIG Time Code Structure and Timing Diagram 32 4 3 17 2 Format categories IRIG Bxxx according to IRIG Standard 200 ...

Страница 4: ...tring 44 5 7 2 Configuration for GPS2000 Data String 45 5 8 Data String SAT 1703 Time String 46 5 8 1 Specified Settings 46 5 8 2 Data String Structure 46 5 8 3 Data String Example 47 5 9 SINEC H1 Extended 48 5 9 1 Data String Structure 48 5 9 2 Status 49 5 9 3 Example of a Transmitted Data String 49 6 Examples of connections 50 6 1 Assignment of the screw clips 50 6 1 1 Examples of connections fo...

Страница 5: ... module has further features Potential free antenna circuit All outputs potential free All settings can be parametered via the COM0 serial interface COM1 interface can be switched from RS232 to RS422 via configuration software switchable analogue output IRIG B DCF77 The following versions of the system are available indicated on the identification label FG6875G00 GPS 6875 snap in module basic vers...

Страница 6: ...6875 satellite controlled clock Earth the device Connect the antenna Create communication between the PC and the remote controlled clock Connect the power supply Install and start the remote software Set the current local time Ser the local time difference to UTC local time UTC Set changeover dates Set the position data of the location if this is not known then set an approximate value or set ever...

Страница 7: ...tion for negative potential of the power supply OC3 OC2 OC1 PhotoMOS signal relay connection for positive voltage potential Drain OC3 OC2 OC1 PhotoMOS signal relay connection for negative voltage potential Source Connector X2 9 pole SUB D connector Pin No Function 1 5 GND 4 Digital output TTL COM0 RS232 2 Receiving line RxD0 3 Transmission line TxD0 COM1 RS232 RS422 6 Transmission line TxD1 TxD11 ...

Страница 8: ... power supply is connected via the 2 x 4 pole connectors as supplied with threaded flange connections Vin und Vin on the connecting unit X1 The system is provided with a voltage of 18 72 VDC The internal voltage supply of the 6875 snap in module is potential free It must be earthed on the rear side of the housing via the screw as labelled in order to compensate the potential dif ference between th...

Страница 9: ...changes in power supply in free wheeling status 0 0002 ppm V PPS drift depending on changes in temperature in free wheeling status 0 16 ppm C at constant Uin 24V and temperature radient of approx 1 5 C min Accuracy quartz model Free wheeling characteristics 0 5 ppm after factory setting of VCO control at a con stant temperature of 20 C Drift max 4 ppm Year Backup Clock Accuracy 25 ppm from 10 C to...

Страница 10: ...d length 7 8 bit Parity no even or odd Line length The line lengths depend on the type of line and the setting of the Baud rate Option optical interface λ 820 nm Interfaces COM2 COM3 asynchronous without handshake optical Baud rate 300 19 200 Baud Stop bit 1 2 bit Word length 7 8 bit Parity no even or odd Optical transmitter COM2 FL 1 COM3 FL 2 Optical receiver COM2 FL 1 Connection ST series bayon...

Страница 11: ...ed min 40 MB free hard disk memory screen resolution min 640x480 1024x768 recommended Linux RedHat 7 1 SuSE 7 2 or Debian 2 2R3 glibc 2 x libstdc libc6 1 1 so 2 X Windows min 32 MB RAM 128 MB recommended min 110 MB free hard disk memory screen resolution min 640x480 1024x768 recommended Solaris SPARC Solaris 8 X Windows min 32 MB RAM 128 MB recommended min 75 MB free hard disk memory screen resolu...

Страница 12: ...e starts Follow the instructions in the uninstall programme Unix Platforms The application can be removed via the uninstall programme supplied Uninstall6875 which is found in the corresponding subdirectory UninstallerData e g opt Hopf 6875 UninstallerData Uninstall6875 4 2 2 Start programme Windows After installation has been completed in the chosen directory e g C rogramme Hopf 6875 the configura...

Страница 13: ...re that the configuration software functions correctly If the monitor resolution is low or some fonts are missing there may be slight distortion in the script of the configuration software This does not however affect the functions If during installation a JAVA VM version is selected which is already installed then care must be taken that the minimum version is Java2 1 3 Usually we advise using or...

Страница 14: ...dio controlled clock If an error occurs a message is emitted otherwise the current values are updated The software can be ended by activating the button END 4 3 2 Selecting the serial interface The serial interface to which the radio controlled clock is connected can only be selected when the programme is started Depending on the PC or operating system it may take some time to set up the selection...

Страница 15: ...an be found in the info dialogue which is activated by clicking on the info button on the right next to the button help 4 3 5 Extras This section makes it possible to save a complete configuration of a radio controlled clock in a configuration file text file or to load down from a configuration file and transmit to the radio controlled clock ...

Страница 16: ...on OPEN the following dialogue ap pears LOAD DIALOGUE This dialogue shows in a well structured form all the configuration data in the file which has been loaded The left column contains the definition of the value the middle column the actual value and the right column the status If the status is OK green then this value is available if not then the status of this value is ERROR red If at least on...

Страница 17: ...he time and date values entered Before transmission of the time to the radio controlled clock the cor rect day of the week for the date entered is checked if the day of the week entered differs from that which is calculated then a corresponding message will appear Time difference Shows the actual time difference between local time and UTC in hours and minutes In this section the value is for infor...

Страница 18: ...trol Time status for local time of day standard time daylight saving time announcement of changeover announcement of leap second 4 3 7 Time Zone In this section the time zone for the location of the radio controlled clock can be displayed and adjusted Setting the time difference is only necessary when commissioning The time difference country or location specific time offset to UTC difference betw...

Страница 19: ...e displayed and changed In order to set the changeover times the changeover function must first be activated If no changeover is required this must be deactivated Ö time of day local time then runs in stan dard time status To set the changeover times the following information is required first second third fourth or last day of the week in the month day of the week month time in hours and minutes ...

Страница 20: ...itude are in degrees minutes 1 100 und 1 10000 minutes and the following additional information concerning the geographical location Entry for latitude North northern hemisphere South southern hemisphere Example North 51 12 3651 Entry for longitude East east of Greenwich meridian West west of Greenwich meridian Example East 007 37 8426 For accelerated synchronization the GPS radio controlled clock...

Страница 21: ... the clock For this calculation reception from at least 4 satellites is necessary GPS reception mode 3D In the GPS reception mode Position fixed the accuracy depends considerably on the exact en try of the location of implementation When entering the position up to 1 minute the accuracy of the second mark is already better than 20 µsec Position fixed has the advantage that the GPS radio controlled...

Страница 22: ...GPS Satellite Controlled Clock 6875 Ver 04 00 4 3 11 System Byte This section permits the configuration of additional internal system functions These are acti vated and deactivated by the setting and resetting of a bit ...

Страница 23: ... 5 OUT 0 Crystal operation 2 hours Ö The internal second and millisecond mark are slowly adjusted to the GPS sec ond mark after the GPS resynchronisation without leap Crystal operation 2 hours Ö The internal second and millisecond mark are directly set to the GPS second mark after the GPS resynchronisation leap of the internal second mark Bit No 5 IN 1 Crystal operation Ö The internal second and m...

Страница 24: ...nput of the word length 8 or 7 Bit Stoppbits number of stop bits 1 or 2 Parität parity input no odd even If the serial interface COM0 of the clock has already been previously configured with different parameters status ex works 9600 baud 8 data bits 1 stop bit no parity then the configura tion data must be adjusted accordingly so that communication is possible between the configu ration software a...

Страница 25: ...ytes In this section the output strings of the serial interfaces are displayed and changed The serial interface to be configured is selected in 4 3 12 There is a detailed description of the individual data strings in section 5 The interface s designated for the output of the data strings as set must be indicated addition ally in section 4 3 15 Please Note THE ENTRIES C01 CUSTOM STRING TO C16 CUSTO...

Страница 26: ... String SINEC H1 Ext Control character Output of ETX control character in the data string Standard direct no delay At the second change no delay or At the second change with delay Time basis Time basis for the data string Local time UTC Transmission time Output of the data string at the second change Each second Each minute Each hour On request Second forerun Output of the data string with 1 secon...

Страница 27: ...at the appropriate output This setting is used for example for the synchronization of further DCF77radio controlled clocks with DCF77 pulse in put such as hopf 6850 If desired this signal can be inverted The settings for the DCF77 pulse are in the DCF77 menu and apply to all outputs emitting this Sync Information Mode 1 In this setting the internal clock radio control status is emitted at the corr...

Страница 28: ...cted in the range of 10 2550 msec in 10 msec steps It is possible to invert the signal output Single pulse Mode 5 This mode creates a single pulse per time and date at the output This mode creates a single pulse at a defined point in time The output time of the pulse is fixed by means of a mouse click on the corresponding arrow fields or by manual entry in the fields designated for this The pulse ...

Страница 29: ...nnector X2 Methods of configuring COM1 serial interface COM1 in the radio controlled clock Output signal data string IMP1 pulse1 IMP2 pulse2 IRIG B pulse Interface RS232 RS422 full duplex The output signals can also be emitted inversely Methods of configuring COM2 and COM3 optical serial interfaces Output signal data string IMP1 pulse1 IMP2 pulse2 IRIG B pulse The output signals can also be emitte...

Страница 30: ...the range 140 240 msec Standard 200 msec Pulse length Lowbit in the range 70 130 msec Standard 100 msec Delay for DCF77 switch off in the range 2 255 minutes at 255 Ö Time basis local time or UTC The pulse lengths and the switch off delays are determined by mouse click on the correspond ing input fields or by manual entry the time basis is entered via the selection list The value DCF77 timeout aft...

Страница 31: ...formats of IRIG Time Code are available o IRIG B B002 B122 time o IRIG B B003 B123 time seconds of day o IRIG B B006 B126 time year o IRIG B B007 B127 time year seconds of day o IEEE1344 o AFNOR NFS 87 500 Info The IRIG B output is done by the IRIG Standard 200 04 Time Base for IRIG Time Code For special applications the time basis transmitted in the IRIG Time Code can be configured o Local Time o...

Страница 32: ...he signal informa tion of H L level should be between 3 1 and 6 1 The Din Rail Module 6870 distributes a modu lation of 3 1 To synchronize to the beginning of a second a neutral logic status is required which is called the identifier Logic 0 2 msec H level Logic 1 5 msec H level Identifier 8 msec H level low high PPS IRIG B digital IRIG B analog 2msec 5msec reference bit position identifier 8ms 8m...

Страница 33: ...d of day 4 time year second of day control information 5 time year control information 6 time year 7 time year second of day e g IRIG B123 analogue output carrier 1000 Hz data content time information and binary seconds of day 4 3 17 3 IRIG IEEE 1344 1995 This IRIG standard is based on IRIG Standard 200 89 Fixed data such as year time offset etc are assigned to the 27 bits of the control informati...

Страница 34: ...tiated by this function The function does not change any of the set tings made previously in contrast to the DEF key in the front panel A reset is necessary after inputs are completed in order to accelerate the first synchronization Please Note WHEN CHANGES HAVE BEEN MADE ON THE RADIO CONTROLLED CLOCK IT IS AD VISABLE TO WAIT FOR THE MINUTE CHANGE BEFORE SETTING UP RESET ...

Страница 35: ...d with control character Board 7220 7221 standard with control character Board 7240 7245 standard with control character Board 6840 6841 standard with control character System 4465 standard with control character System 6870 standard with control character 5 2 Set up of the standard hopf6021 string character no Meaning Hex 1 STX Start of Text 02 2 status internal status of the clock 30 39 41 46 3 ...

Страница 36: ...56 hrs ASCII control characters e g STX 5 2 2 Configuration for NTP Network Time Protocol NTP or also xNTP is a programme package for synchronizing different computer and operating systems with network support It is the standard for Internet protocol TCP IP RFC 1305 Source code and documentation are available as freeware in the Internet under the following address http www ntp org or http www eeci...

Страница 37: ... year Current char no Meaning 1 STX Start of Text 2 status internal status of clock 3 day of the week 1 Monday 7 Sunday bit 3 in the day of the week is set to 1 with UTC time 4 tens hours 5 unit hours 6 tens minutes 7 unit minutes 8 tens seconds 9 unit seconds 10 tens days 11 unit days 12 tens months 13 unit months 14 tens centuries 15 unit centuries 16 tens years 17 unit years 18 LF Line Feed 19 ...

Страница 38: ...ent DST ST DST x x 0 x Standard time ST x x 1 x Daylight saving time DST 0 0 x x Time date invalid 0 1 x x Quartz mode 1 0 x x Radio controlled mode 1 1 x x Radio controlled mode high accuracy Day of the week nibble 0 x x x CEDST CET 1 x x x UTC time x 0 0 1 Monday x 0 1 0 Tuesday x 0 1 1 Wednesday x 1 0 0 Thursday x 1 0 1 Friday x 1 1 0 Saturday x 1 1 1 Sunday Example STX E312345603011996 LF CR E...

Страница 39: ...har no Meaning Value value range 1 STX start of text 02 2 D ASCII D 44 3 colon 3A 4 tens days 30 33 5 unit days 30 39 6 point 2E 7 tens months 30 31 8 unit months 30 39 9 point 2E 10 tens years 30 39 11 unit years 30 39 12 semi colon 3B 13 T ASCII T 54 14 colon 3A 15 day of the week 31 37 16 semi colon 3B 17 U ASCII U 55 18 colon 3A 19 tens hours 30 32 20 unit hours 30 39 21 point 2E 22 tens minut...

Страница 40: ...r reset time invalid space radio controlled synchronization after reset hrs and min in quartz mode Character no 29 time from the internal quartz crystal of the clock space time via radio controlled reception Character no 30 S DST daylight saving time space ST standard time Character no 31 announcing a changeover from ST DST or DST ST space no announcement Example STX D 03 01 96 T 1 U 12 34 56 _ _ ...

Страница 41: ...lon 3A 3 tens years 30 39 4 unit years 30 39 5 colon 3A 6 tens months 30 31 7 unit months 30 39 8 colon 3A 9 tens days 30 33 10 unit days 30 39 11 colon 3A 12 tens days of the week 30 13 unit days of the week 31 37 14 colon 3A 15 tens hours 30 32 16 unit hours 30 39 17 colon 3A 18 tens minutes 30 35 19 unit minutes 30 39 20 colon 3A 21 tens seconds 30 36 22 unit seconds 30 39 23 CR carriage return...

Страница 42: ...TC Logic 0 local time after UTC Example 90 00 time difference 10 00 hrs 01 30 time difference 01 30 hrs 81 30 time difference 01 30 hrs The whole data string has the following structure Current char no Meaning Value value range 1 STX start of text 02 2 status 30 39 41 46 3 day of week 31 37 4 tens hours 30 32 5 unit hours 30 39 6 tens minutes 30 35 7 unit minutes 30 39 8 tens seconds 30 36 9 unit ...

Страница 43: ...0 0 1 Monday 0 0 1 0 Tuesday 0 0 1 1 Wednesday 0 1 0 0 Thursday 0 1 0 1 Friday 0 1 1 0 Saturday 0 1 1 1 Sunday Example STX 831234560301968230 LF CR ETX Radio controlled mode no announcement standard time It is Wednesday 03 01 96 12 34 56 hrs The time difference to UTC is 2 30 hrs 5 6 2 Setting To synchronize the hopf slave systems the following settings are required Output every minute Output seco...

Страница 44: ...s hours 30 39 7 unit hours 30 36 8 colon 3A 9 tens minutes 30 33 10 unit minutes 30 39 11 colon 3A 12 tens seconds 30 39 13 unit seconds 30 39 14 time accuracy 3F 23 2A 2E 20 15 CR carriage return 0D 16 LF line feed 0A 5 7 1 Time Accuracy in the GPS2000Data String Hex value ASCII value Description Meaning details of accuracy 3F question mark Error greater than 1 msec 23 double dagger Error greater...

Страница 45: ... bit even parity Output every second Control characters standard direct without delay Time basis and second forerun as required Transmission time every second CR LF In addition the output of a second pulse is required at the 2nd RS232 serial interface The pulse width is 10 msec The falling edge is synchronized to the second mark The pulse must be configured separately e g in 6875 IMP1 as cyclical ...

Страница 46: ...pecified Settings All parameter are free adjustable o Baud rate 9600 Baud o Data bits 8 o Stop bit s 1 o Parity no o Point of transmission every second o Second forerun no o Control character yes o CR LF CR Ö LF 5 8 2 Data String Structure Character No Meaning Hex Value 1 STX start of text 02 2 tens day 30 33 3 unit day 30 39 4 2E 5 tens month 30 31 6 unit month 30 39 7 2E 8 tens year 30 39 9 unit...

Страница 47: ...r standard time CET summer time CEST or UTC 20 5A 20 25 20 Ö synchronous or 2A Ö not synchronous 20 2A 26 20 Ö no announcement or 21 Ö announcement of S D or D S changeover 20 21 27 CR carriage return 0D 28 LF line feed 0A 29 ETX 03 5 8 3 Data String Example STX 18 07 02 4 02 34 45UTC_ _ CR LF ETX It is Thursday 18 07 2002 02 34 45 o clock UTC The clock is synchronised with GPS ...

Страница 48: ...cter no meaning value value range 1 STX start of text 02 2 D ASCII D 44 3 colon 3A 4 tens day 30 33 5 unit day 30 39 6 point 2E 7 tens month 30 31 8 unit month 30 39 9 point 2E 10 tens year 30 39 11 unit year 30 39 12 semicolon 3B 13 T ASCII T 54 14 colon 3A 15 day of the week 31 37 16 semicolon 3B 17 U ASCII U 55 18 colon 3A 19 tens hours 30 32 20 unit hours 30 39 21 point 2E 22 tens minute 30 35...

Страница 49: ... radio synchronisation after reset clock at least in crystal operation character no 29 time from the internal crystal space time from radio reception character no 30 S daylight saving time U UTC space standard time character no 31 announcement of a W S or S W changeover A announcement of a leap second space no announcement 5 9 3 Example of a Transmitted Data String STX D 03 01 96 T 3 U 12 34 56 _ ...

Страница 50: ...EXAMPLES OF CONNECTIONS Page 50 GPS Satellite Controlled Clock 6875 Ver 04 00 6 Examples of connections 6 1 Assignment of the screw clips 6 1 1 Examples of connections for OC1 3 Active positive pulse ...

Страница 51: ...EXAMPLES OF CONNECTIONS GPS Satellite Controlled Clock 6875 Ver 04 00 Page 51 Active negative pulse Passive positive pulse ...

Страница 52: ... 23 0 0 91 48 0 1 89 79 5 3 13 105 0 4 13 8 Glossary und Abbreviations UTC Universal time coordinated GPS Global positioning system DCF77 D Deutsches C Langwellensignal F Frankfurt a M 77 Fre quenz in kHz German longwave signal Frankfurt a M Frequency in kHz PPS Pulse Per Second Standard time Standard time wintertime DST Daylight Saving Time summertime IRIG B Inter Range Instrumentation Group B AF...

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