105
Appendix G
GGG
Grounding and RF protection
G
G.1 Why is grounding required?
G.1.1 Reasons for grounding
Grounding of the Fleet77/55system is required for three reasons:
•
Safety: Lightning protection of persons and equipment
•
Protection: ESD (ElectroStatic Discharge) protection of equipment
•
Performance: Interference free communication between BDU and ADU
G.1.2 Safety
Fist of all grounding of the Fleet77/55system is required for safety reasons. In
the event of a lightning strike at the ADU a proper grounding of the system will
provide a low resistance path to divert the strike discharge to seawater.
G.1.3 Protection
Secondly the ESD protection circuits in the BDU rely on a proper grounding of
the system in order to work properly. Otherwise sensitive circuits within the
BDU might be damaged due to ESD when handling the equipment.
G.1.4 Performance
Finally a proper grounding of the system will enhance RF immunity thus
ensuring interference free modem communication between BDU and ADU.
This modem communication is essential for the performance of the
Fleet77/55system.
Содержание TracPhone F55
Страница 1: ...A Guide to the TracPhone F55 F77 Satellite Communications KVH TracPhone F55 F77 installation manual...
Страница 22: ...Table of Contents x...
Страница 28: ...Chapter 2 GMDSS Installations 6 Power Supply...
Страница 40: ...Chapter 3 Placing the Antenna 18 Antenna Mast Design...
Страница 48: ...Chapter 5 Installing the BDU 26 Grounding the BDU...
Страница 54: ...Chapter 6 F77 Distress Cradle 32 Assembly Alternative...
Страница 58: ...Chapter 7 F55 Passive Cradle 36 Passive Cradle Assembly...
Страница 64: ...Chapter 8 Connecting Power 42 Power supply specification...
Страница 84: ...Chapter 10 Hardware Interfaces 62 Discrete I O interface...
Страница 109: ...Appendix B F55 77 ADU Technical Specifications Outline Dimensions Flange 87 BBBB B 6 Outline Dimensions Flange...
Страница 116: ...Appendix C F55 77 BDU Technical Specifications 94 Measuring the Ship Source Impedance...
Страница 120: ...Appendix D Distress Cradle Technical Specifications 98 Outline Dimensions...
Страница 122: ...Chapter E Passive Cradle Technical Specifications 100 Outline Dimensions E 2 Outline Dimensions Dimension are in mm...
Страница 123: ...Chapter E Passive Cradle Technical Specifications Outline Dimensions 101 EEE...
Страница 124: ...Chapter E Passive Cradle Technical Specifications 102 Outline Dimensions...
Страница 126: ...Chapter F Handset Technical Specifications 104 Outline Dimensions F 2 Outline Dimensions Dimension are in mm...