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YSTEM

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NALYSIS

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ROUBLESHOOTING

6842 GPS Slim Line System - V09.01

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hopf

Elektronik GmbH

Nottebohmstr. 41 • D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]

7.2.5 No GPS Reception / No Synchronization

Description

•

System Status "C" is on the display

•

The red Sync.-Status OFF LED lights

•

"Sync" error relay has tripped

•

Quartz status is transmitted in the serial strings

Cause / Problem Solution

•

System was not initialized correctly / completely

•

Check for errors in the Error Byte (see

Chapter 4.1.2.10 Error Byte

)

The following describes various effects and their possible causes on a non-
synchronizing system:

Case 1:

Effect: After the first installation, no satellite appears on the display after several

hours and

is displayed under

Possible errors:

•

The antenna cable is too long

•

An incorrect cable type was used for the length of the antenna equipment

•

The antenna cable is faulty

•

The antenna cable is not connected

•

The antenna is faulty

•

The lightning protector is faulty

•

The antenna cable is connected to the wrong BNC socket (e.g. “DCF-SIM“
socket instead of “Antenna“)

Case 2:

Effect:

There are 7 satellites in the visibility range (

V=07

) but a maximum of 2

appear on the display frame. However, the value of these satellites is 70 or
above.

Possible error:

•

The visibility range of the antenna to the sky is limited

Case 3:

Effect:

9 satellites in the visibility range (

V=09

), 6 satellites appear on the display

frame. The signal/noise ratios are all between 10 and 30. The equipment
does not synchronize.

Possible errors:

•

The cable is too long

•

An incorrect cable type was used for the length of the antenna equipment

•

The BNC plugs are poorly connected

•

The cable is crimped or broken

•

Indirect lightning protector irreversibly damaged by excess voltage

•

Antenna faulty

Содержание 6842 GPS

Страница 1: ..._____________________ Technical Manual Slim Line System Model 6842 GPS ENGLISH Version 09 01 07 09 2009 _____________________________________________________________ Valid for Devices 6842 GPS with FI...

Страница 2: ...2 98 6842 GPS Slim Line System V09 01 hopf Elektronik GmbH Nottebohmstr 41 D 58511 L denscheid Tel 49 0 2351 9386 86 Fax 49 0 2351 9386 93 Internet http www hopf com E Mail info hopf com...

Страница 3: ...RELATION BETWEEN DEVICE AND TECHNICAL MANUAL See chapter 3 3 Display after System Start Reset Firmware THE DIGITS AFTER THE POINT IN THE VERSION NUMBER INDICATE CORRECTIONS IN THE FIRMWARE MANUAL THAT...

Страница 4: ...the voltage supply indicated on the identification label The device should only be operated by qualified staff or employees who have received specific instruction If a device must be opened for repair...

Страница 5: ...Unit Specifications 17 2 4 2 Fusing 17 2 4 3 Reverse Voltage Protection 17 2 5 Synchronization Source Connection GPS 18 2 6 COM0 COM1 Serial Interfaces Connection 18 2 7 Error Relays Connection 18 2...

Страница 6: ...and Pulse Output 40 4 1 2 9 System Status Byte 40 4 1 2 10 Error Byte 41 4 1 3 S CLOCK Menu Back up Clock Control with Function Board 7406 41 4 1 4 INI Menu System 6842 Extended Settings Functions 42...

Страница 7: ...65 5 3 8 IBM Sysplex Timer Model 1 2 66 5 3 8 1 Specified Settings 66 5 3 8 2 Structure 66 5 3 8 3 Status 67 5 3 8 4 Example 67 5 3 9 SINEC H1 Extended 68 5 3 9 1 Specified Settings 68 5 3 9 2 Structu...

Страница 8: ...No Output 84 7 2 3 Power LED ON No Display but Valid Signal Output 84 7 2 4 Power LED ON Cyclical Flickering of the Displays 84 7 2 5 No GPS Reception No Synchronization 85 7 2 6 No DCF77 Antenna Simu...

Страница 9: ...rear and status error relays provide information about the equipment s operating condition The full modularity of the System 6842 GPS is available in the 1U design This allows tailor made solutions t...

Страница 10: ...ng by two temperature controlled fans Power input with mains switch compliant with IEC EN 60320 1 C14 and EMI network noise filter Prepared for retrofitting of Function Boards by the customer Up to tw...

Страница 11: ...er input voltages available Voltage input with mains switch and line filter Connection for protection earth PE cables up to 16mm System front panel with LCD Display 2x16 keypad 20 keys and status LEDs...

Страница 12: ...keypad with 20 keys provides menu driven operation of the clock system For keypad operation please see Chapter 3 4 Keypad Functions 1 1 4 Status LEDs The System has status LEDs on both the front and...

Страница 13: ...active on the System Bus Function Boards which only receive data from the System Bus do not have a SEND LED 1 1 6 Function Board Slots Up to two Function Boards can be implemented in the System 6842 G...

Страница 14: ...changeover point of time S D Input changeover point of time D S Wait for minute change Trigger program reset Check for correct acquisition of the time offset using the SHOW function Check for correct...

Страница 15: ...e rack and the control panel to allow for the connection of cables to the System 2 2 Earthing The System 6842 GPS Slim Line 1U is usually earthed via the PE cable of the power supply An additional ear...

Страница 16: ...rrectly and electrical shock protection is in place The earth wire is connected All supply cables are correctly sized and fused All output cables are suitably sized or specially fused for the max outp...

Страница 17: ...pecifications are contained in Chapter 9 Technical Data System 6842 GPS Slim Line 1U 2 4 2 Fusing Pay attention to the correct fusing of the power supply when connecting the System 6842 GPS Slim Line...

Страница 18: ...422 low active SUB D connector 9 pin COM1 Pin Assignment 1 2 RxD RS232 3 TxD RS232 4 5 GND 6 TxD RS422 high active 7 TxD RS422 low active 8 RxD RS422 high active 9 RxD RS422 low active 2 7 Error Relay...

Страница 19: ...econds Execute all parameter settings via the SET menu and also via the INI and S CLOCK menus when necessary Check for successful synchronization of the System 6842 Commission the Function Boards wher...

Страница 20: ...fter system start with valid back up clock information or following manual input of the time information L T 1 4 5 6 2 7 S C T U 0 3 A U G 2 0 0 4 The meaning of the individual items is as follows LT...

Страница 21: ...on Input of the operational signs for numerical values 0 9 Input of the digits N E S W Input keys Y Call up menu group selection frame BREAK Aborts all key controls Quits the input menu at any time an...

Страница 22: ...d or used The System functions for which they are effective are indicated in the specification at the beginning of each sub function If such a function is called up by mistake this can be exited by pr...

Страница 23: ...CHANGE OVERDATE Changeover Standard time Summer time 1 04 CHANGE OVERDATE Changeover Summertime Standard time 1 05 POSITION 1 06 COM0 SERIALPARAMETER 1 07 COM0 MODE 1 1 08 COM0 MODE 2 1 09 COM1 SERIAL...

Страница 24: ...2 13 OPTICAL TRANS MODE 1 No function in this equipment version 2 14 OPTICAL TRANS MODE 2 No function in this equipment version 2 15 LAN1 ADR No Board 7271 7272 in the System no function 2 16 LAN1 GA...

Страница 25: ...es and must be complete For this purpose it is also necessary to input the leading zeros Selection frame S E T T I M E Y N _ Input frame T I M E H H M M S S d D D M M Y Y Y Y The meaning of the indivi...

Страница 26: ...0 However some countries also use smaller time intervals Therefore it is also possible to input the data in one minute steps e g 05 30 or 08 45 The time offset always relates to the local standard tim...

Страница 27: ...Daylight saving time Standard time Input frame S D h h d w M M 0 3 7 5 1 0 The meaning of the individual items is as follows hh The hour in which the changeover is to take place 00 23 hours d The wee...

Страница 28: ...es of Latitude from 00 89 MM Minutes of Latitude from 00 59 SSSS Minutes of Latitude decimal places 0000 9999 There then follows the entry of the longitude position under pGGG MM SSSS where the meanin...

Страница 29: ...meters for Baud rate Word length Parity bit Stop bit and HandShake must be entered in sequence in the following input frame Input frame B 0 9 6 0 0 W 8 P N S 1 H S N _ Setting Mode Byte 1 Selection fr...

Страница 30: ...e in the respective LAN Board description 4 1 1 6 1 Selection Frames for LAN Board 1 Parameters Setting the IP address Selection frame S E T L A N 1 A D R Y N _ Input frame L A N 1 1 9 2 1 6 8 0 0 1 0...

Страница 31: ...E T F R E Q U E N C Y Y N _ Input frame F R E Q U E N C Y 1 0 0 0 0 0 0 0 H z corresponds to 10MHz Frequency Output Delay Selection frame S E T F R E Q U E N C Y O U T P U T D E L A Y Y N Input frame...

Страница 32: ...E O U T P U T S D I S P L A Y D C F Y N Input frame L O C T 0 U T C 1 D i s p l a y D C F 0 1 The selection can only be changed completely The following combinations are possible Display DCF77 Simula...

Страница 33: ...ed The key word protection is automatically reactivated after exiting the menu by pressing BREAK or after 255 seconds without pressing a key No key word is set up in the factory Setup is carried out b...

Страница 34: ...O R D When the next attempt is made to start the menu the following display appears Display frame K E Y P A D S W I T C H E D O F F No further entries can be made for four hours Switching the System o...

Страница 35: ...ENTER or N The corresponding display frame is called up by entering Y The display jumps to the next selection frame if ENTER or N are entered in the display frame The SHOW menu can be exited at any ti...

Страница 36: ...ction shows the changeover point of time from Daylight saving time summer time to Standard time winter time Selection frame S H O W C H A N G E _ O V E R D S Y N _ After entering Y the following frame...

Страница 37: ...in visibility range of which satellite 20 is captured by the GPS receiver with a relative signal noise ratio of 95 and satellite 7 with a relative signal noise ratio of 57 etc A maximum of eight satel...

Страница 38: ...rameter Displays Selection frame S H W C O M _ 0 S E R I A L P A R A M E T E R Y N Display frame B 0 9 6 0 0 W 8 P N S 1 H S N _ Mode Byte 1 Displays Selection frame S H O W C O M _ 0 M O D E _ 1 Y N...

Страница 39: ...e L A N 1 1 9 2 1 6 8 0 0 1 0 1 0 Always the last inputted IP address by keypad is displayed If the IP address is changed by Telnet or via serial interface of the LAN board it will be displayed too Ga...

Страница 40: ...Y N _ Display frame F R E Q U E N C Y 1 0 0 0 0 0 0 0 H z Frequency Output Delay Display Selection frame S H O W F R E Q U E N C Y O U T P U T D E L A Y Y N Display frame D E L A Y O N O F F 0 0 0 0...

Страница 41: ...of the quartz frequency The specified system accuracy and freewheel stability can t be guaranteed According to the error the system stays in status C crystal Error Bit 1 1 The GPS receiver is unable...

Страница 42: ...this period the System continues to run on the internal high precision controlled quartz base in Sync Status r mode The value can be set between 002 and 255 minutes The setting depends primarily on t...

Страница 43: ...GPS at least once before beginning to simulate the signal DCF77 Antenna Simulation output also occurs again following DCF77 synchronization failure for the set time span After this time has lapsed no...

Страница 44: ...mitted in BCD format in the DCF77 time telegram In this case logic 1 corresponds to a pulse length of 200msec and logic 0 to 100msec see Chapter 11 2 DCF77 German Long Wave Transmitter Frankfurt 77 5k...

Страница 45: ...the exact entry of the installation position location The second mark is then calculated on the basis of the position entered If four or more satellites are received in Position fix mode then the eva...

Страница 46: ...hanged to Position fix with the sign 4 1 4 5 Program Reset This function triggers a software reset of the System 6842 Control Board All other Function Boards in the System continue to run except Funct...

Страница 47: ...e serial interfaces is described below 5 1 1 Serial Transmission Parameters The interfaces are parameterized via the keypad The baud rate data bit stop bit and parity settings are made by pressing the...

Страница 48: ...r no parity bit E for even parity 0 zero for odd parity After entering the parity function the following message appears on the display Input frame B 0 9 6 0 0 W 8 P N S _ The number of stop bits for...

Страница 49: ...e SET menu for the mode bytes can be reached via the following key combination Key ENTER Key 1 for SET menu Pressing Key N until the following menu appears Selection frame S E T C O M _ 0 M O D E _ 1...

Страница 50: ...change See also Chapter 5 2 Data String Transmission Points of Time This function is usually used in conjunction with the with second forerun setting 5 1 2 5 Mode Byte 1 Bit 3 Reverse Control Characte...

Страница 51: ...nsmission Point of Time Bit 1 Bit 0 Transmission Point of Time off off Transmit every second off on Transmit on minute change on off Transmit on hour change on on Transmit on enquiry only 5 1 2 8 Mode...

Страница 52: ...n this Chapter are described under Data Strings 5 1 4 1 Serial Requests with ASCII Characters hopf Standard and hopf 2000 The transmission of a data string can also be triggered by the user on enquiry...

Страница 53: ...TX time information of 2 second nd ETX STX time information of 1 second st control character at second change second forerun transmission delay OFF ON OFF TxD t sec 59 00 01 ETX STX time information m...

Страница 54: ...d for all data strings These are differentiated as follows Automatic Automatic string settings are set automatically by the System immediately after the selection of a data string Customer settings ar...

Страница 55: ...3 is set to 1 in the day of the week 31 37 4 tens hour 30 32 5 unit hour 30 39 6 tens minute 30 35 7 unit minute 30 39 8 tens second 30 36 9 unit second 30 39 10 tens day 30 33 11 unit day 30 39 12 te...

Страница 56: ...nouncement 2 0010 time invalid summer no announcement 3 0011 time invalid summer announcement 4 0100 quartz winter no announcement 5 0101 quartz winter announcement 6 0110 quartz summer no announcemen...

Страница 57: ...t0 as hopf standard string see chapter 5 1 2 9 Source code and documentation are available as freeware under http www ntp org 5 3 3 1 Specified Settings Automatic no Required The following values have...

Страница 58: ...1 Specified Settings Automatic no Required no Blocked no 5 3 4 2 Structure Character No Meaning Hex Value 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...

Страница 59: ...n the following character no 28 no radio synchronisation after reset time invalid space radio synchronisation after reset clock in crystal operation character no 29 time from internal crystal in the c...

Страница 60: ...digits 5 3 5 1 Specified Settings Automatic no Required no Blocked no 5 3 5 2 Structure Character No Meaning Hex Value 1 STX start of text 02 2 status internal clock status 30 39 41 46 3 day of the we...

Страница 61: ...g Status x x x 0 no announcement hour x x x 1 announcement ST WT ST x x 0 x standard time WT x x 1 x daylight saving time ST 0 0 x x time date invalid 0 1 x x crystal operation 1 0 x x radio operation...

Страница 62: ...c no Required no Blocked no 5 3 6 2 Structure Character No Meaning Hex Value 1 T ASCII T 54 2 colon 3A 3 tens year 30 39 4 unit year 30 39 5 colon 3A 6 tens month 30 31 7 unit month 30 39 8 colon 3A 9...

Страница 63: ...ave String transmits the full time information hour minute second the date day month year 2 digits the difference time local to UTC hour minute the day of the week and status information announcement...

Страница 64: ...r 30 39 16 difference time tens hour operational sign 30 31 38 39 17 difference time unit hour 30 39 18 difference time tens minutes 30 35 19 difference time unit minutes 30 39 20 LF line feed 0A 21 C...

Страница 65: ...nouncement 1 0001 quartz winter announcement no announcement 2 0010 quartz summer no announcement no announcement 3 0011 quartz summer announcement no announcement 4 0100 quartz winter no announcement...

Страница 66: ...he following parameters are activated after a reset automatically 9600 baud 8 data bit odd parity 1 stop bit sending on request without forerun and without control characters Required no Blocked no Th...

Страница 67: ...he synchronisation status of the clock Possible values and their meaning are listed below question mark no radio controlled time space radio controlled time at hand A Hex 41 crystal operation for more...

Страница 68: ...er 5 3 9 1 Specified Settings Automatic no Required no Blocked no 5 3 9 2 Structure Character No Meaning Hex Value 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...

Страница 69: ...no 28 no radio synchronisation after reset time invalid space radio synchronisation after reset clock in crystal operation character no 29 time from internal crystal in the clock space time by radio...

Страница 70: ...tains the position rate and time data UTC calculated by the GPS receiver The different information is separated in the data string by a comma Only a comma is set if an information is not available 5 3...

Страница 71: ...tens second 30 35 13 unit second 30 39 14 point as separation 2E 15 tenth second 30 39 16 hundredth second 30 39 17 comma as separation 2C 18 A ASCII A 41 19 comma 2C 20 comma 2C 21 comma 2C 22 comma...

Страница 72: ...1 D 58511 L denscheid Tel 49 0 2351 9386 86 Fax 49 0 2351 9386 93 Internet http www hopf com E Mail info hopf com 5 3 10 3 Status No status contained in data string NMEA GPRMC 5 3 10 4 Example GPRMC 1...

Страница 73: ...the Microsoft Windows NT Recource Kit CD The newest version of the program is although available free of charge on the Microsoft Internet site ftp ftp microsoft com bussys winnt winnt public reskit nt...

Страница 74: ...t of header 02 2 hundreds current day of the year 30 33 3 tens current year 30 39 4 unit current year 30 39 5 colon 3A 6 tens hour 30 32 7 unit hour 30 39 8 colon 3A 9 tens minute 30 35 10 unit minute...

Страница 75: ...1 Specified Settings Automatic no Required no Blocked no 5 3 13 2 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...

Страница 76: ...status of the clock The characters mean the following Character no 21 24 MESZ Central European Summertime Daylight Saving Time MEZ Central European Time Standard Time Wintertime UTC Coordinated Univer...

Страница 77: ...via the internal System bus Mechanics Function Boards with front panel mechanics adapted for the 1U System are required for installation Configuration In principle there are two board types Boards whi...

Страница 78: ...the System 6842 GPS Slim Line 1U 7271 7272 LAN Board for NTP SINEC H1 LAN BUS Suitable for retrofit 7265 IRIG B Output Board Suitable for retrofit 7266 IRIG B Output Board Suitable for retrofit 7406...

Страница 79: ...quipment back on Set Function Board to the desired configuration via the System 6842 GPS menu if necessary Software settings must always be set after replacing a function board by using the menu in or...

Страница 80: ...d into the System and tighten the screws Make all connections to the Function Board Switch the equipment back on Configure the Function Board via the System 6842 menu as necessary 6 5 Removing Functio...

Страница 81: ...System is provided with power and switched on This LED goes out if the operating voltage fails the System is switched off or the power supply unit is faulty 7 1 1 2 Sync Status LEDs The Sync Status ON...

Страница 82: ...the Status Change After setting see Chapter 4 1 4 1 Delayed Sync Status Change 7 1 4 Send LED Boards without a Send LED Function Boards without a Send LED are supplied with the appropriate time infor...

Страница 83: ...via the System bus After this all boards perform a defined program restart All boards with their own processor are actively integrated into the System s auto reset logic On boards without a processor...

Страница 84: ...incorrectly faulty 7 2 3 Power LED ON No Display but Valid Signal Output Description The power LEDs are lit Display not active or shows only dark bars Send LEDs of all boards light up cyclically Data...

Страница 85: ...ble errors The antenna cable is too long An incorrect cable type was used for the length of the antenna equipment The antenna cable is faulty The antenna cable is not connected The antenna is faulty T...

Страница 86: ...e immediate vicinity of the GPS antenna cable Electronic equipment with an interference effect on the GPS signal has been put into operation in the vicinity of the GPS antenna equipment GPS receiver e...

Страница 87: ...lt on Control Board 6842 Check for errors in the Error Byte see Chapter 4 1 2 10 Error Byte UTC Time Description UTC time transmitted differs from the actual UTC time Cause Problem Solution Time has d...

Страница 88: ...n the housing cover Occurrence of the error during commissioning or operation Exact error description In the case of GPS reception synchronization problems description of the antenna equipment used o...

Страница 89: ...asive media The use of such cleaning agents or media could damage the System 6842 Do not use a wet cloth to clean the System 6842 There is the danger of an electric shock To clean the System 6842 use...

Страница 90: ...se Board 6842 300 000 hours Weight approx 3kg AC Power Supply with wide input range Nominal input voltage 100 240V AC 47 63Hz Connection via input connector compliant with IEC EN 60320 1 C14 Input vol...

Страница 91: ...emp Output Data internal only Internal nominal output voltage 5V DC 5V DC 5V DC Nominal output current IN 0 C 55 C 6A UOUT 5V DC 6A UOUT 5V DC 6A UOUT 5V DC Efficiency 90 90 74 Function display Power...

Страница 92: ...like int PPS pulse Pulse duration 2 20ms 5ms DCF77 pulse system bus time base local UTC Signal level TTL 5V Accuracy like int PPS pulse Offset to internal PPS 5 s Pulse duration tolerance 2ms Signal O...

Страница 93: ...e System V09 01 93 98 hopf Elektronik GmbH Nottebohmstr 41 D 58511 L denscheid Tel 49 0 2351 9386 86 Fax 49 0 2351 9386 93 Internet http www hopf com E Mail info hopf com 10 System Drawing 445 0mm 17...

Страница 94: ...n sighting range above the skyline and forwards them to the GPS receiver via a coaxial cable 4 satellites are required for continuous time evaluation hopf GPS radio controlled clocks have a Position f...

Страница 95: ...he correct UTC time from the local time via the internally set time offset and the ST WT changeover points 11 2 1 1 DCF77 Signal Structure The complete time information is transmitted in every minute...

Страница 96: ...dar day day of the week month year 0 15 45 30 M P3 80 40 20 10 8 4 2 1 10 8 4 2 1 4 2 1 20 10 8 4 2 1 P2 20 10 8 4 2 1 P1 40 20 10 8 4 2 1 S R A1 Z1 Z2 A2 DCF77 time code format M Minute mark 100msec...

Страница 97: ...can simulate the DCF77 signal for other clocks in order to operate DCF77 clocks in locations where the DCF77 signal is not available This can realized as DCF77 antenna simulation 77 5kHz and also as D...

Страница 98: ...German HP Panel width for 19 housings English IRIG B Time coding method LCD Liquid Crystal Display LED Light Emitting Diode Local time Locale time if applicable with SZ WZ change over LWL Fiber Optic...

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