Echelon FT 3150 Smart Transceiver User Manual
Page 5
FT 3120 / 3150 Smart Tranceiver Data Book
iii
Chapter 4 - Hardware Design Considerations .................................................91
Introduction .....................................................................................................92
Quick Start for Users Familiar With The FTT-10A Transceiver ...................92
Interface Between Smart Transceivers and the Network ................................93
PC Board Layout Guidelines ..........................................................................95
EMI Design Issues ..........................................................................................98
ESD Design Issues ........................................................................................101
Lightening Protection ...................................................................................102
Building Entrance Protection ..................................................................102
Network Line Protection .........................................................................102
Shield Protection .....................................................................................103
Suggested Gas Discharge Arresters ........................................................103
EN 61000-4 Electromagnetic Compatibility (EMC) Testing .......................104
Chapter 5 - Network Cabling and Connections .............................................109
Network Connection .....................................................................................110
Network Topology Overview .......................................................................110
System Performance and Cable Selection ....................................................111
Cable Termination and Shield Grounding ....................................................113
Free Topology Network Segment ...........................................................113
Doubly Terminated Bus Topology Segment ..........................................113
Grounding Shielded Twisted Pair Cable ................................................114
Chapter 6 - Programming Considerations .....................................................115
Application Program Development and Export ............................................116
LonBuilder Developers Kit ...........................................................................116
Development Hardware Setup ................................................................116
Release Hardware Setup .........................................................................118
NodeBuilder Development Tool ...................................................................118
Appendix A - FT Smart Transceiver Design Checklist .................................121
Appendix B - Qualified TP/FT-10 Cable Specifications and Sources ..........125
Category 5 Cable Specifications .............................................................126
NEMA Level IV Cable Specifications ...................................................126
16AWG/1.3mm “Generic” Cable Specifications ...................................128