Programming instructions

Contents
LabVIEW Data Acquisition Basics Manual vi
© National Instruments Corporation
Error Handling................................................................................................................. 3-8
Channel, Port, and Counter Addressing .......................................................................... 3-9
Channel Name Addressing................................................................................ 3-10
Channel Number Addressing............................................................................ 3-10
Limit Settings ..................................................................................................................3-12
Data Organization for Analog Applications.................................................................... 3-14
Chapter 4
Where You Should Go Next
Questions You Should Answer ....................................................................................... 4-3
P
ART
II
Catching the Wave with Analog Input
Chapter 5
Things You Should Know about Analog Input
Defining Your Signal ...................................................................................................... 5-1
What Is Your Signal Referenced To? ............................................................... 5-2
Grounded Signal Sources ................................................................... 5-2
Floating Signal Sources...................................................................... 5-3
Choosing Your Measurement System............................................................................. 5-4
Resolution ......................................................................................................... 5-4
Device Range.................................................................................................... 5-5
Signal Limit Settings......................................................................................... 5-6
Considerations for Selecting Analog Input Settings ....................................................... 5-7
Differential Measurement System .................................................................... 5-9
Referenced Single-Ended Measurement System.............................................. 5-11
Nonreferenced Single-Ended Measurement System......................................... 5-11
Channel Addressing with the AMUX-64T...................................................................... 5-13
The AMUX-64T Scanning Order ..................................................................... 5-14
Important Terms You Should Know............................................................................... 5-17
Chapter 6
One-Stop Single-Point Acquisition
Single-Channel, Single-Point Analog Input.................................................................... 6-1
Multiple-Channel Single-Point Analog Input ................................................................. 6-3
Using Analog Input/Output Control Loops..................................................................... 6-6
Using Software-Timed Analog I/O Control Loops........................................... 6-6
Using Hardware-Timed Analog I/O Control Loops ......................................... 6-7
Improving Control Loop Performance.............................................................. 6-9