© National Instruments Corporation
v
ER-8/16 User Manual
Contents
About This Manual
............................................................................................................ix
Organization of This Manual .........................................................................................ix
Conventions Used in This Manual.................................................................................x
National Instruments Documentation ............................................................................xi
Customer Communication .............................................................................................xii
Chapter 1
Introduction
..........................................................................................................................1-1
About the ER-8/16 .........................................................................................................1-1
What You Need to Get Started ......................................................................................1-1
Optional Equipment.......................................................................................................1-2
Software .........................................................................................................................1-2
Unpacking ......................................................................................................................1-2
Chapter 2
Setup
........................................................................................................................................2-1
Safety Information .........................................................................................................2-4
Connecting the ER-8/16 to Your DAQ Device .............................................................2-5
Chapter 3
Signal Connections
.............................................................................................................3-1
Front Connectors............................................................................................................3-1
Using DIO-24 Devices.......................................................................................3-1
Using DIO-32 Boards ........................................................................................3-2
Power Supply.................................................................................................................3-2
Channel Connections .....................................................................................................3-3
Power-up Conditions..........................................................................................3-4
Wire Gauge ........................................................................................................3-4
Channel Isolation ...............................................................................................3-4
Contact Protection for Inductive Loads .............................................................3-4
Connecting Your Signal Lines.......................................................................................3-6
Internal Connectors........................................................................................................3-7
Daisy Chaining the ER-8/16 ..............................................................................3-8
Using the SC-205X Series with the ER-8......................................................................3-8
DAQ System Configurations with the ER-8/16.............................................................3-9
Chapter 4
Theory of Operation
..........................................................................................................4-1
Functional Overview......................................................................................................4-1
Digital Interface .............................................................................................................4-3
Relay Channels ..............................................................................................................4-3
