Table of Contents
CHAPTER 1: OVERVIEW.................................
INTRODUCTION........................................
DATA TRANSMISSION SIGNALS...........................
Unbalanced Line Drivers.............................
Balanced Line Drivers...............................
Balanced Line Receivers.............................
EIA STANDARD RS-422 DATA TRANSMISSION ..............
EIA STANDARD RS-485 DATA TRANSMISSION ..............
TRISTATE CONTROL OF AN RS-485 DEVICE USING RTS......
SEND DATA CONTROL OF AN RS-485 DEVICE...............
CHAPTER 2: SYSTEM CONFIGURATION.....................
NETWORK TOPOLOGIES .................................
TWO WIRE OR FOUR WIRE SYSTEMS.......................
TERMINATION.........................................
BIASING AN RS-485 NETWORK ..........................
EXTENDING THE SPECIFICATION.........................
CHAPTER 3: SELECTING RS-422 AND RS-485 CABLING......
NUMBER OF CONDUCTORS ...............................
SHIELDING...........................................
CABLE CHARACTERISTICS ..............................
CHAPTER 4: TRANSIENT PROTECTION OF RS-422 AND RS-485
SYSTEMS.............................................
WHAT DOES A SURGE LOOK LIKE?........................
Surge Specifications................................
Common Mode vs. Differential Mode...................
GROUND ≠ GROUND ...................................
TRANSIENT PROTECTION USING ISOLATION ...............
Isolation Theory....................................
Isolation Devices...................................
TRANSIENT PROTECTION USING SHUNTING ................
Shunting Theory.....................................
Connecting Signal Grounds...........................
Shunting Devices....................................
COMBINING ISOLATION AND SHUNTING ...................
SPECIAL CONSIDERATION FOR FAULT CONDITIONS .........
CHOOSING THE RIGHT PROTECTION FOR YOUR SYSTEM.......
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发表于 2010-12-9 19:57:47
