National Instruments PXI-7811 User Manual page 6

Contents
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
Single-Ended Connection Considerations ...................................................... 2-13
Single-Ended Connections for Floating Signal Sources
Single-Ended Connections for Grounded Signal Sources
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........................................................................................................ 2-26
Device Fuse Replacement (NI 784xR/785xR Only) ...................................... 2-27
PCI Express Device Disk Drive Power Connector ....................................................... 2-28
When to Use the Disk Drive Power Connector .............................................. 2-28
Disk Drive Power Connector Installation ....................................................... 2-29
Field Wiring Considerations (NI 783xR/784xR/785xR Only) ..................................... 2-30
Chapter 3
Calibration (NI 783xR/784xR/785xR Only)
Loading Calibration Constants ...................................................................................... 3-1
Self-Calibration ............................................................................................................. 3-1
External Calibration....................................................................................................... 3-2
Appendix A
Connecting I/O Signals
Appendix B
Using the SCB-68 Shielded Connector Block
R Series Multifunction RIO User Manual
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Floating Signal Sources ................................................................. 2-12
(RSE Input Mode).......................................................................... 2-14
(NRSE Input Mode)....................................................................... 2-15
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