8
Accessories
8-19
8.4.2
Functional principle of the GPS satellite radio clock
The time base of the satellite radio clock is synchronized by the GPS (Global Posi-
tioning System) satellite navigation system installed everywhere in the world. Satel-
lites are orbiting the earth twice a day at 20,000 km of height, on different paths and at
different angles. Each satellite is equipped with a high-precision atomic clock. The
GPS receiver receives the orbit positions and a GPS world time from as many satel-
lites as possible. This allows to determine the exact position of the receiver (location).
Once the position has been determined, the travel time of the received GPS world
time signal from a satellite can be determined. After conversion of the GPS UTC and
regional adaptation, the local time is available with high precision.
The connection of the satellite radio clock to the AC 800F and the time synchroniza-
tion is done system-wide, as for the DCF77 radio clock (see Section 8.3).
8.4.3
GPS satellite radio clock deliverables
Normally, the components listed below are needed for connecting a GPS satellite ra-
dio clock to the AC 800F:
Qty.
Component
Order code
1
Stand-alone 6841GPS system with LC display,
keyboard and power supply in half 19" rack
FG6841G11
1
Active GPS antenna with 25 m standard cable for flat roof
and wall mounting
FG4490G0
1
Indirect lightning protector for GPS antenna
FG4495G0
Note that the component names and order codes may have changed.
Please contact Hopf for details.
If the distance between the GPS system and the external antenna should be longer
than 25 m, please contact the company Hopf who will then offer you the appropriate
components for your application. The clock in the ordering example listed above is
equipped with an outdoor antenna and a 25 m antenna cable.
The 19" model can be mounted to the same support rails as the AC 800F. A space-
saving model with half 19" mounting width is also available.
An external antenna is always required for satellite radio reception. It is therefore rec-
ommended to order the appropriate lightning protection module, too. Please contact
Hopf for the configuration meeting your requirements and for further details.
Summary of Contents for AC 800F
Page 1: ... PROCESS AUTOMATION Freelance 2019 Mounting and Installation Instructions AC 800F Controller ...
Page 2: ......
Page 66: ...3 Mounting the AC 800F 3 38 ...
Page 168: ...4 Cabling the AC 800F 4 102 ...
Page 290: ...7 Functional Description of the Fieldbus Modules 7 36 ...
Page 317: ...10 Approvals certificates 10 1 10 Approvals certificates 10 1 ISO 9001 Fig 10 1 ISO 9001 ...
Page 318: ...10 Approvals certificates 10 2 Fig 10 2 ISO 9001 ...
Page 319: ...10 Approvals certificates 10 3 Fig 10 3 ISO 9001 ...
Page 320: ...10 Approvals certificates 10 4 Fig 10 4 ISO 9001 ...
Page 321: ...10 Approvals certificates 10 5 10 2 ISO 9000 Fig 10 5 ISO 9000 ...
Page 322: ...10 Approvals certificates 10 6 Fig 10 6 ISO 9000 ...
Page 323: ...10 Approvals certificates 10 7 10 3 CE Fig 10 7 CE certificate page 1 ...
Page 324: ...10 Approvals certificates 10 8 Fig 10 8 CE certificate page 2 ...
Page 325: ...10 Approvals certificates 10 9 Fig 10 9 CE certificate page 3 ...
Page 326: ...10 Approvals certificates 10 10 Fig 10 10CE certificate supplement ...
Page 327: ...10 Approvals certificates 10 11 10 4 CSA Fig 10 11 CSA certificate page 1 ...
Page 328: ...10 Approvals certificates 10 12 Fig 10 12 CSA certificate page 2 ...
Page 329: ...10 Approvals certificates 10 13 Fig 10 13 CSA certificate page 3 ...
Page 330: ...10 Approvals certificates 10 14 Fig 10 14 CSA certificate page 4 ...
Page 331: ...10 Approvals certificates 10 15 10 5 UL Fig 10 15 UL certificate ...
Page 332: ...10 Approvals certificates 10 16 Fig 10 16 UL certificate page 2 ...
Page 333: ...10 Approvals certificates 10 17 Fig 10 17 UL certificate page 3 ...
Page 334: ...10 Approvals certificates 10 18 Fig 10 18 UL certificate page 4 ...
Page 335: ...10 Approvals certificates 10 19 10 6 GUS certificate Fig 10 19 GUS certificate ...
Page 369: ...13 Glossary 13 18 Component of the Freelance 2000 System ...
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