hopf Elektronik GmbH 6844, Техническое руководство

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10 / 157 System 6844(RC) - V03.00
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: info@hopf.com
9.2 Error Patterns ........................................................................................................ 141
9.2.1 Complete Failure .............................................................................................................. 141
9.2.2 "Power" / Power Supply LED "ON" - No Display and No Output ..................................... 142
9.2.3 Power LED "ON" - No Display but Valid Signal Output ................................................... 142
9.2.4 Power LED "ON" - Cyclical Flickering of the Displays ..................................................... 142
9.2.5 No GPS Reception / No Synchronization ........................................................................ 142
9.2.6 No DCF77 Antenna Simulation (77.5kHz) / DCF77 Pulse (1Hz) ..................................... 144
9.2.7 No or Incorrect Serial Output ........................................................................................... 144
9.2.8 Incorrect Time Output ...................................................................................................... 144
9.2.9 No Daylight Saving Time (DST) Changeover .................................................................. 145
9.2.10 Output and Function Errors of individual Function Boards .............................................. 145
9.3 Support from the
hopf
Company .......................................................................... 145
10 Maintenance / Care ................................................................................................... 146
10.1 General Guidelines for Cleaning ............................................................................ 146
10.2 Cleaning the Housing ............................................................................................ 146
10.3 Cleaning the Display and Keypad .......................................................................... 146
11 Technical Data .......................................................................................................... 147
11.1 Specific Technical Data for 3U / Table-Top / Wall .................................................. 147
11.2 Specific Technical Data for 1U .............................................................................. 148
11.3 General Technical Data 6844(RC) ......................................................................... 149
11.3.1 Internal System Accuracy ................................................................................................ 150
11.3.2 Signal Outputs .................................................................................................................. 151
12 Appendix ................................................................................................................... 153
12.1 Factory-Default Values .......................................................................................... 153
12.2 GPS (Global Positioning System) .......................................................................... 154
12.3 DCF77 (German Long-Wave Transmitter Frankfurt 77.5kHz) ................................ 155
12.3.1 DCF77 General ................................................................................................................ 155
12.3.1.1 DCF77 Signal Structure ............................................................................................................ 155
12.3.1.2 Advantages and Disadvantages DCF77 ................................................................................... 157
12.3.2 DCF77 Generation by
hopf
Clocks................................................................................. 157
12.3.2.1 DCF77 Signal Simulation .......................................................................................................... 157
12.3.2.2 DCF77 Pulse (1Hz) ................................................................................................................... 157