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Contents
R Series Intelligent DAQ User Manual vi ni.com
Types of Signal Sources................................................................................................ 2-8
Floating Signal Sources ..................................................................................2-8
Ground-Referenced Signal Sources................................................................ 2-8
Input Modes...................................................................................................................2-8
Differential Connection Considerations (DIFF Input Mode) ......................... 2-10
Differential Connections for Ground-Referenced Signal Sources ... 2-11
Differential Connections for Nonreferenced or
Floating Signal Sources................................................................. 2-12
Single-Ended Connection Considerations ......................................................2-13
Single-Ended Connections for Floating Signal Sources
(RSE Input Mode).......................................................................... 2-14
Single-Ended Connections for Grounded Signal Sources
(NRSE Input Mode)....................................................................... 2-15
Common-Mode Signal Rejection Considerations...........................................2-16
Analog Output ...............................................................................................................2-16
Connecting Analog Output Signals...............................................................................2-17
Digital I/O......................................................................................................................2-17
Connecting Digital I/O Signals .....................................................................................2-17
RTSI Trigger Bus ..........................................................................................................2-21
PXI Local Bus (NI PXI-781xR/783xR Only)............................................................... 2-21
Switch Settings (NI 781xR/783xR Only)......................................................................2-23
+5 V Power Source........................................................................................................2-28
Device Fuse Replacement (NI 784xR/785xR Only) ......................................2-29
Field Wiring Considerations (NI 783xR/784xR/785xR Only).....................................2-31
Chapter 3
Calibration (NI 783xR/784xR/785xROnly)
Loading Calibration Constants...................................................................................... 3-1
Internal Calibration........................................................................................................ 3-1
External Calibration....................................................................................................... 3-2
Appendix A
Connecting I/O Signals
Appendix B
Using the SCB-68 Shielded Connector Block
Appendix C
Technical Support and Professional Services
Glossary