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6842 GPS Slim Line System - V09.01
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
System Indicators / Fault Analysis / Troubleshooting .............................................. 81
7.1
Status and Fault Indicators ....................................................................................... 81
7.1.1
Status LEDs ....................................................................................................................... 81
7.1.1.1
"Power ON" LED......................................................................................................................... 81
7.1.1.2
"Sync. Status" LEDs ................................................................................................................... 81
7.1.2
LCD-Display ....................................................................................................................... 81
7.1.2.1
System Status on the Display ..................................................................................................... 81
7.1.2.2
Number of Satellites ................................................................................................................... 81
7.1.2.3
Position Display .......................................................................................................................... 81
7.1.2.4
Error Byte Display....................................................................................................................... 82
7.1.3
Error Relays ....................................................................................................................... 82
7.1.3.1
"Power" Relay............................................................................................................................. 82
7.1.3.2
"Sync" Relay ............................................................................................................................... 82
7.1.4
Send LED........................................................................................................................... 82
7.1.5
Auto-Reset Logic (System Bus)......................................................................................... 82
7.1.6
Serial Output of Data Telegrams ....................................................................................... 83
7.2
Error Patterns............................................................................................................ 83
7.2.1
Complete Failure................................................................................................................ 83
7.2.2
Power LED "ON" – No Display and 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 Simulation / DCF77 Pulse ................................................................. 86
7.2.7
No or Incorrect Serial Output ............................................................................................. 86
7.2.8
Incorrect Time Output ........................................................................................................ 87
7.2.9
No ST/WT Changeover...................................................................................................... 87
7.2.10
Output and Function Errors of Individual Function Boards................................................ 87
7.3
Support from the
hopf
Company ............................................................................. 88
8
Maintenance / Care ....................................................................................................... 89
8.1
General Guidelines for Cleaning ............................................................................... 89
8.2
Cleaning the Housing................................................................................................ 89
8.3
Cleaning the Display and Keypad ............................................................................. 89
9
Technical Data System 6842 GPS Slim Line (1U) ...................................................... 90
10
System Drawing............................................................................................................ 93
11
Appendix ....................................................................................................................... 94
11.1
GPS (Global Positioning System) ............................................................................. 94
11.2
DCF77 (German Long-Wave Transmitter Frankfurt 77.5kHz) .................................. 95
11.2.1
DCF77 General .................................................................................................................. 95
11.2.1.1
DCF77 Signal Structure .............................................................................................................. 95
11.2.1.2
Advantages and Disadvantages DCF77 ..................................................................................... 97
11.2.2
DCF77 Generation by
hopf
Clocks................................................................................... 97
11.2.2.1
DCF77 Signal Simulation............................................................................................................ 97
11.2.2.2
DCF77 Pulse (1Hz)..................................................................................................................... 97
12
Glossary ........................................................................................................................ 98
