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© National Instruments Corporation ix Multifunction Reconfigurable I/O User Manual About This Manual This manual describes the electrical and mechanical aspects, as well as the programming and usage inform ation, for the…
Contents
Multifunction Reconfigurable I/O User Manual vi ni.com
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 (PXI-781x/783x Only).......................................................................... 2-21
Switch Settings (NI 781x/783x Only)........................................................................... 2-23
+5 V Power Source........................................................................................................ 2-26
Device Fuse Replacement (NI 784x/785x 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 783x/784x/785x Only) ............................................. 2-30
Chapter 3
Calibration (NI 783x /784x /785x 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
Appendix C
Technical Support and Professional Services
Glossary
© National Instruments Corporation ix Multifunction Reconfigurable I/O User Manual
About This Manual
This manual describes the electrical and mechanical aspects, as well as the
programming and usage information, for the following devices:
• PCI/PXI-7811
• PCI/PXI-7813
• PCI/PXI-7830
• PCI/PXI-7831
• PCI/PXI-7833
• PCIe/PXI-7841
• PCIe/PXI-7842
• PCIe/PXI-7851
• PCIe/PXI-7852
• PXI-7853
• PXI-7854
Conventions
The following conventions appear in this manual:
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash. When this symbol is marked on a
product, refer to the Read Me First: Safety and Electromagnetic
Compatibility document for information about precautions to take.
When symbol is marked on a product, it denotes a warning advising you to
take precautions to avoid electrical shock.
When symbol is marked on a product, it denotes a component that may be
hot. Touching this component may result in bodily injury.
NI 78xx Refers to PCI/PXI-7811, PCI/PXI-7813, PCI/PXI-7831, PCI/PXI-7833,
PCIe/PXI-7841, PCIe/PXI-7842, PCIe/PXI-7851, and PCIe/PXI-7852
devices.
NI 781x Refers to PCI/PXI-7811 and PCI/PXI-7813 devices.
About This Manual
Multifunction Reconfigurable I/O User Manual x ni.com
NI 783x Refers to PCI/PXI-7831 and PCI/PXI-7833 devices.
NI 784x Refers to PCIe/PXI-7841 and PCIe/PXI-7842 devices.
NI 785x Refers to PCIe/PXI-7851 and PCIe/PXI-7852 devices.
Related Documentation
The following documents contain information that you may find helpful as
you use this help file. Your documentation needs may vary depending on
the hardware and software you use for your application.
Note Most manuals are available as PDFs. You must have Adobe Reader with Search and
Accessibility 5.0.5 or later installed to view the PDFs. Refer to the Adobe Systems
Incorporated Web site at
www.adobe.com to download Adobe Reader. Refer to
ni.com/docs for updated documentation resources.
Software Documentation
• LabVIEW FPGA documentation
– Getting Started with LabVIEW FPGA 8.x—This KnowledgeBase,
available at
ni.com/kb, provides links to the top resources that
can be used to assist in getting started with programming in
LabVIEW FPGA.
– FPGA Module book in the LabVIEW Help—Select Help»Search
the LabVIEW Help in LabVIEW to view the LabVIEW Help.
Browse the FPGA Module book in the Contents tab for
information about using the FPGA Module to create VIs that run
on your device.
– LabVIEW FPGA Module Release and Upgrade Notes—Contains
information about installing the LabVIEW FPGA Module,
describes new features, and provides upgrade information.
To access this document, refer to
ni.com/docs. In
LabVIEW 8.0 or later, you can also view the LabVIEW Manuals
directory that contains this document by selecting Start»
All Programs»National Instruments»LabVIEW»LabVIEW
Manuals.
• LabVIEW Real-Time documentation
– Getting Started with the LabVIEW Real-Time Module—Provides
exercises to teach you how to develop a real-time project and VIs,
from setting up RT targets to building, debugging, and deploying
real-time applications. This document provides references to the