National Instruments NI 7831R Manual do Utilizador

Reconfigurable I/ONI 7831R User ManualReconfigurable I/O Devices for PCI/PXI/CompactPCI Bus ComputersNI 7831R User ManualApril 2004 EditionPart Number

© National Instruments Corporation 1-1 NI 7831R User Manual1IntroductionThis chapter describes the NI 7831R, describes the concept of the Reconfigurab

Chapter 1 IntroductionNI 7831R User Manual 1-2 ni.combetween devices. The NI PXI-7831R accesses the RTSI bus through the PXI trigger lines implemented

Chapter 1 Introduction© National Instruments Corporation 1-3 NI 7831R User ManualOverview of Reconfigurable I/OThis section explains reconfigurable I/

Chapter 1 IntroductionNI 7831R User Manual 1-4 ni.comUser-Defined I/O ResourcesYou can create your own custom measurements using the fixed I/O resourc

Chapter 1 Introduction© National Instruments Corporation 1-5 NI 7831R User ManualThe FPGA logic provides timing, triggering, processing, and custom I/

Chapter 1 IntroductionNI 7831R User Manual 1-6 ni.comYou can use Interactive Front Panel Communication to communicate directly with the VI running on

Chapter 1 Introduction© National Instruments Corporation 1-7 NI 7831R User ManualCables and Optional EquipmentNational Instruments offers a variety of

Chapter 1 IntroductionNI 7831R User Manual 1-8 ni.comRefer to Appendix B, Connecting I/O Signals, for more information about using these cables and ac

Chapter 1 Introduction© National Instruments Corporation 1-9 NI 7831R User ManualSafety InformationThe following section contains important safety inf

Chapter 1 IntroductionNI 7831R User Manual 1-10 ni.comOperate the NI 7831R at or below the installation category1 listed in the section Maximum workin

SupportWorldwide Technical Support and Product Informationni.comNational Instruments Corporate Headquarters11500 North Mopac Expressway Austin, Texas

© National Instruments Corporation 2-1 NI 7831R User Manual2Hardware Overview of the NI 7831RThis chapter presents an overview of the hardware functio

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-2 ni.comFigure 2-2. Parts Locator Diagram for the NI PXI-7831RSW1

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-3 NI 7831R User ManualFigure 2-3. Parts Locator Diagram for the NI PC

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-4 ni.comInput ModesThe NI 7831R input mode is software configurable. The input chann

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-5 NI 7831R User ManualConnecting Analog Input SignalsThe AI signals fo

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-6 ni.comFigure 2-4. NI 7831R Instrumentation AmplifierThe instrumentation amplifier

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-7 NI 7831R User ManualTypes of Signal SourcesWhen configuring the inpu

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-8 ni.comFigure 2-5. Summary of Analog Input Connections+–+–V1AI<i>AISENSEAIGN

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-9 NI 7831R User ManualDifferential Connection Considerations (DIFF Inp

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-10 ni.com Figure 2-6. Differential Input Connections for Ground-Referenced SignalsW

Important InformationWarrantyThe NI 7831R is warranted against defects in materials and workmanship for a period of one year from the date of shipmen

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-11 NI 7831R User Manual Figure 2-7. Differential Input Connections fo

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-12 ni.comYou can fully balance the signal path by connecting another resistor of the

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-13 NI 7831R User ManualIn single-ended input modes, electrostatic and

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-14 ni.compositive and negative inputs of the instrumentation amplifier. The instrume

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-15 NI 7831R User ManualAnalog OutputThe NI 7831R has eight 16-bit AO c

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-16 ni.comFigure 2-10. Analog Output ConnectionsDigital I/OThe NI 7831R has 96 bidir

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-17 NI 7831R User ManualTo interface to 5 V CMOS devices, you must prov

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-18 ni.comFigure 2-11 shows signal connections for three typical DIO applications. Fi

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-19 NI 7831R User Manualpaired with power or ground. Because the DIO li

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-20 ni.comthe remaining devices on that PXI bus segment must have PXI/TRIG0 configure

ComplianceCompliance with FCC/Canada Radio Frequency Interference RegulationsDetermining FCC ClassThe Federal Communications Commission (FCC) has rul

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-21 NI 7831R User ManualThe left local bus lines from the left peripher

Chapter 2 Hardware Overview of the NI 7831RNI 7831R User Manual 2-22 ni.com4. Reinsert the NI 7831R into the PXI/CompactPCI chassis or PCI computer. R

Chapter 2 Hardware Overview of the NI 7831R© National Instruments Corporation 2-23 NI 7831R User ManualField Wiring ConsiderationsEnvironmental noise

© National Instruments Corporation 3-1 NI 7831R User Manual3CalibrationCalibration is the process of determining and/or adjusting the accuracy of an i

Chapter 3 CalibrationNI 7831R User Manual 3-2 ni.comIf you have NI-RIO installed, you can find the internal calibration utility at Start»All Programs»

© National Instruments Corporation A-1 NI 7831R User ManualASpecificationsThis appendix lists the specifications of the NI 7831R. These specifications

Appendix A SpecificationsNI 7831R User Manual A-2 ni.comOvervoltage protection ...±42 VData transfers...

Appendix A Specifications© National Instruments Corporation A-3 NI 7831R User ManualSettling TimeCrosstalk...

Appendix A SpecificationsNI 7831R User Manual A-4 ni.comDC Transfer CharacteristicsINL...±0.5 L

Appendix A Specifications© National Instruments Corporation A-5 NI 7831R User ManualDigital logic levels Maximum output currentImax (source)...

© National Instruments Corporation v NI 7831R User ManualContentsAbout This ManualConventions ...

Appendix A SpecificationsNI 7831R User Manual A-6 ni.comPhase locked to PXI 10 MHzClock(NI PXI-7831R only) ...Adds 350 ps jitter, 300

Appendix A Specifications© National Instruments Corporation A-7 NI 7831R User Manualby the digital outputs use the following equation:Where j is the n

Appendix A SpecificationsNI 7831R User Manual A-8 ni.comchassis, tested in accordance with IEC-60068-2-1 and IEC-60068-2-2Relative humidity range...

Appendix A Specifications© National Instruments Corporation A-9 NI 7831R User ManualSafetyThis product is designed to meet the requirements of the fol

© National Instruments Corporation B-1 NI 7831R User ManualBConnecting I/O SignalsThis appendix describes how to make input and output signal connecti

Appendix B Connecting I/O SignalsNI 7831R User Manual B-2 ni.comFigure B-2 shows the I/O connector pin assignments for the I/O connectors on the NI 78

Appendix B Connecting I/O Signals© National Instruments Corporation B-3 NI 7831R User Manual. Caution Connections that exceed any of the maximum rati

Appendix B Connecting I/O SignalsNI 7831R User Manual B-4 ni.com Connecting to CompactRIO Extension I/O ChassisYou can use the CompactRIO R Series Exp

Appendix B Connecting I/O Signals© National Instruments Corporation B-5 NI 7831R User ManualConnecting to 5B and SSR Signal ConditioningNI provides ca

Appendix B Connecting I/O SignalsNI 7831R User Manual B-6 ni.comFigure B-3. Connector Pinouts when Using NSC68-262650 CableThe NSC68-5050 cable conne

ContentsNI 7831R User Manual vi ni.comSingle-Ended Connection Considerations ... 2-12Single-Ended C

Appendix B Connecting I/O Signals© National Instruments Corporation B-7 NI 7831R User ManualNSC68-5050 cable header. In this case, you have access onl

© National Instruments Corporation C-1 NI 7831R User ManualCUsing the SCB-68 Shielded Connector BlockThis appendix describes how to connect input and

© National Instruments Corporation D-1 NI 7831R User ManualDTechnical Support and Professional ServicesVisit the following sections of the National In

Appendix D Technical Support and Professional ServicesNI 7831R User Manual D-2 ni.comIf you searched ni.com and could not find the answers you need, c

© National Instruments Corporation G-1 NI 7831R User ManualGlossarySymbol Prefix Valueppico10–12nnano10–9µ micro 10–6m milli 10–3k kilo 103Mmega106Ggi

GlossaryNI 7831R User Manual G-2 © National Instruments CorporationSquare root of.+5V +5 VDC source signal.AA Amperes.A/D Analog-to-digital.AC Alterna

Glossary© National Instruments Corporation G-3 NI 7831R User ManualCCCelsius.CalDAC Calibration DAC.CH Channel—Pin or wire lead to which you apply or

GlossaryNI 7831R User Manual G-4 © National Instruments CorporationDIO Digital input/output.DIO<i> Digital input/output channel signal.DMA Direc

Glossary© National Instruments Corporation G-5 NI 7831R User ManualII/O Input/output—The transfer of data to/from a computer system involving communic

GlossaryNI 7831R User Manual G-6 © National Instruments CorporationNnoise An undesirable electrical signal—Noise comes from external sources such as t

© National Instruments Corporation vii NI 7831R User ManualAbout This ManualThis manual describes the electrical and mechanical aspects of the Nationa

Glossary© National Instruments Corporation G-7 NI 7831R User ManualRRAM Random-access memory—The generic term for the read/write memory that is used i

GlossaryNI 7831R User Manual G-8 © National Instruments CorporationTTHD Total harmonic distortion—The ratio of the total rms signal due to harmonic di

About This ManualNI 7831R User Manual viii ni.comprograms, subprograms, subroutines, device names, functions, operations, variables, filenames, and ex

About This Manual© National Instruments Corporation ix NI 7831R User ManualRelated DocumentationThe following documents contain information you might