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SCXITMSCXI-1141/1142/1143 User ManualSCXI-1141/1142/1143 User ManualMay 2007371748E-01

Chapter 1 About the SCXI-1141/1142/1143SCXI-1141/1142/1143 User Manual 1-2 ni.comWhat You Need to Get StartedTo set up and use the SCXI-1141/1142/1143

Chapter 1 About the SCXI-1141/1142/1143© National Instruments Corporation 1-3 SCXI-1141/1142/1143 User ManualDAQ. Select the appropriate information f

Chapter 1 About the SCXI-1141/1142/1143SCXI-1141/1142/1143 User Manual 1-4 ni.com• The following help file for software information:– Start»Programs»N

Chapter 1 About the SCXI-1141/1142/1143© National Instruments Corporation 1-5 SCXI-1141/1142/1143 User ManualVerifying the SCXI-1141/1142/1143 Install

Chapter 1 About the SCXI-1141/1142/1143SCXI-1141/1142/1143 User Manual 1-6 ni.com• If you get a Verify SCXI Chassis message box showing the SCXI chass

© National Instruments Corporation 2-1 SCXI-1141/1142/1143 User Manual2Connecting SignalsThis chapter describes input and output signal connections to

Chapter 2 Connecting SignalsSCXI-1141/1142/1143 User Manual 2-2 ni.comTable 2-1. Front Signal Pin AssignmentsFront Connector Diagram Pin Number Colum

Chapter 2 Connecting Signals© National Instruments Corporation 2-3 SCXI-1141/1142/1143 User ManualFront Connector Signal DescriptionsAnalog Input Chan

Chapter 2 Connecting SignalsSCXI-1141/1142/1143 User Manual 2-4 ni.comanalog ground. The inputs are protected against maximum input voltages of up to

Chapter 2 Connecting Signals© National Instruments Corporation 2-5 SCXI-1141/1142/1143 User ManualFigure 2-2 illustrates how to connect a non-referenc

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

Chapter 2 Connecting SignalsSCXI-1141/1142/1143 User Manual 2-6 ni.comFigure 2-4. Ground Offset AC-Coupled Signal ConnectionFigure 2-5. Floating AC-

Chapter 2 Connecting Signals© National Instruments Corporation 2-7 SCXI-1141/1142/1143 User ManualRear Signal ConnectorNote If you use the SCXI-1141/1

Chapter 2 Connecting SignalsSCXI-1141/1142/1143 User Manual 2-8 ni.comTable 2-2 shows the pin assignments for the SCXI-1141/1142/1143 module rear sign

Chapter 2 Connecting Signals© National Instruments Corporation 2-9 SCXI-1141/1142/1143 User ManualIn parallel output mode, channel 0 is selected at th

Chapter 2 Connecting SignalsSCXI-1141/1142/1143 User Manual 2-10 ni.comThe signals on the rear signal connector are classified as analog output, digit

Chapter 2 Connecting Signals© National Instruments Corporation 2-11 SCXI-1141/1142/1143 User ManualAnalog Output Signal ConnectionsPins 3 through 17 o

Chapter 2 Connecting SignalsSCXI-1141/1142/1143 User Manual 2-12 ni.comThe digital output signal is pin 26. Pin 26 is SER DAT OUT and is equivalent to

© National Instruments Corporation 3-1 SCXI-1141/1142/1143 User Manual3Configuring and TestingThis chapter discusses configuring the SCXI-1141/1142/11

Chapter 3 Configuring and TestingSCXI-1141/1142/1143 User Manual 3-2 ni.comInput SelectionThe front end of the SCXI-1141/1142/1143 includes a software

Chapter 3 Configuring and Testing© National Instruments Corporation 3-3 SCXI-1141/1142/1143 User ManualNI-DAQmxUsing NI-DAQmx, you can configure softw

Important InformationWarrantyThe SCXI-1141, SCXI-1142, and SCXI-1143 modules are warranted against defects in materials and workmanship for a period

Chapter 3 Configuring and TestingSCXI-1141/1142/1143 User Manual 3-4 ni.com6. If you are creating a task, you can select a range of channels by holdin

Chapter 3 Configuring and Testing© National Instruments Corporation 3-5 SCXI-1141/1142/1143 User Manual4. Select the channel(s) you want to verify. Yo

© National Instruments Corporation 4-1 SCXI-1141/1142/1143 User Manual4Theory of OperationThis chapter contains an overview of the SCXI-1141/1142/1143

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-2 ni.comFigure 4-1. SCXI-1141/1142/1143 Module Block DiagramExternal ClockAnalog BusRe

Chapter 4 Theory of Operation© National Instruments Corporation 4-3 SCXI-1141/1142/1143 User ManualDigital Control CircuitryThe digital control circui

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-4 ni.comIn general, to provide optimum measurement resolution and noise rejection, you

Chapter 4 Theory of Operation© National Instruments Corporation 4-5 SCXI-1141/1142/1143 User ManualLowpass FiltersThe SCXI-1141/1142/1143 module filte

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-6 ni.comAs Figure 4-2b shows, a real filter has ripple (an uneven variation in attenuat

Chapter 4 Theory of Operation© National Instruments Corporation 4-7 SCXI-1141/1142/1143 User ManualAs Figure 4-4 shows, the SCXI-1141/1142/1143 module

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-8 ni.comFigure 4-5. Typical Passband Responses of the SCXI-1141/1142/1143 ModulePhase

ConventionsThe following conventions are used in this manual:<> Angle brackets that contain numbers separated by an ellipsis represent a range o

Chapter 4 Theory of Operation© National Instruments Corporation 4-9 SCXI-1141/1142/1143 User ManualFigure 4-6. Phase Response Characteristics of the

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-10 ni.comFigure 4-7. Phase Error of the SCXI-1141/1142/1143 ModuleThe most common effe

Chapter 4 Theory of Operation© National Instruments Corporation 4-11 SCXI-1141/1142/1143 User ManualFigure 4-8. Unit Step Response of the SCXI-1141/1

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-12 ni.comthan the signal frequency range of interest. At frequencies much lower than th

Chapter 4 Theory of Operation© National Instruments Corporation 4-13 SCXI-1141/1142/1143 User ManualBecause the SCXI-1141 module stopband begins at 1.

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-14 ni.comUsing the External Clock InputYou can set the cutoff frequencies of filters in

Chapter 4 Theory of Operation© National Instruments Corporation 4-15 SCXI-1141/1142/1143 User ManualFor best results, the cutoff frequency of a partic

Chapter 4 Theory of OperationSCXI-1141/1142/1143 User Manual 4-16 ni.comFilter Bypass ModeYou can bypass the filter of any channel through software co

Chapter 4 Theory of Operation© National Instruments Corporation 4-17 SCXI-1141/1142/1143 User Manualchannel 0 and continues. You can program the SCXI-

© National Instruments Corporation 5-1 SCXI-1141/1142/1143 User Manual5Using the SCXI-1141/1142/1143 ModuleThis chapter makes suggestions for developi

© National Instruments Corporation v SCXI-1141/1142/1143 User ManualContentsChapter 1About the SCXI-1141/1142/1143What You Need to Get Started ...

Chapter 5 Using the SCXI-1141/1142/1143 ModuleSCXI-1141/1142/1143 User Manual 5-2 ni.comFigure 5-1. Typical Program Flowchart for Voltage Measurement

Chapter 5 Using the SCXI-1141/1142/1143 Module© National Instruments Corporation 5-3 SCXI-1141/1142/1143 User ManualGeneral Discussion of Typical Flow

Chapter 5 Using the SCXI-1141/1142/1143 ModuleSCXI-1141/1142/1143 User Manual 5-4 ni.comWhen programmatically adjusting timing settings, you can set t

Chapter 5 Using the SCXI-1141/1142/1143 Module© National Instruments Corporation 5-5 SCXI-1141/1142/1143 User ManualAnalog Input»General Properties»Ad

Chapter 5 Using the SCXI-1141/1142/1143 ModuleSCXI-1141/1142/1143 User Manual 5-6 ni.comTable 5-3. NI-DAQmx RTD Measurement PropertiesProperty Short

Chapter 5 Using the SCXI-1141/1142/1143 Module© National Instruments Corporation 5-7 SCXI-1141/1142/1143 User ManualNote This is not a complete list o

Chapter 5 Using the SCXI-1141/1142/1143 ModuleSCXI-1141/1142/1143 User Manual 5-8 ni.comTable 5-6. Programming a Task in LabVIEWFlowchart Step VI or

Chapter 5 Using the SCXI-1141/1142/1143 Module© National Instruments Corporation 5-9 SCXI-1141/1142/1143 User ManualUsing a NI-DAQmx Channel Property

Chapter 5 Using the SCXI-1141/1142/1143 ModuleSCXI-1141/1142/1143 User Manual 5-10 ni.com6. Right-click ActiveChans, and select Add Element. Left-clic

Chapter 5 Using the SCXI-1141/1142/1143 Module© National Instruments Corporation 5-11 SCXI-1141/1142/1143 User ManualLabWindows/CVILabWindows/CVI work

ContentsSCXI-1141/1142/1143 User Manual vi ni.comChapter 4Theory of OperationPower-Up State...

Chapter 5 Using the SCXI-1141/1142/1143 ModuleSCXI-1141/1142/1143 User Manual 5-12 ni.comTo actually create and configure the channel, you would enter

Chapter 5 Using the SCXI-1141/1142/1143 Module© National Instruments Corporation 5-13 SCXI-1141/1142/1143 User ManualCalibrationThe SCXI-1141/1142/114

© National Instruments Corporation A-1 SCXI-1141/1142/1143 User ManualASpecificationsThis appendix lists the specifications for the SCXI-1141/1142/114

Appendix A SpecificationsSCXI-1141/1142/1143 User Manual A-2 ni.comDC gain error ...±0.6% before calibration, ±

Appendix A Specifications© National Instruments Corporation A-3 SCXI-1141/1142/1143 User ManualBandwidth and response timeSystem NoiseTHD1 kHz...

Appendix A SpecificationsSCXI-1141/1142/1143 User Manual A-4 ni.comStabilityDC gain temperature coefficient...20 ppm/°CInput offset drift...

Appendix A Specifications© National Instruments Corporation A-5 SCXI-1141/1142/1143 User ManualPhysicalFigure A-1. SCXI-1141/1142/1143 DimensionsWeig

Appendix A SpecificationsSCXI-1141/1142/1143 User Manual A-6 ni.comEnvironmentalOperating temperature ...0 to 50 °CStorage te

Appendix A Specifications© National Instruments Corporation A-7 SCXI-1141/1142/1143 User ManualCE ComplianceThis product meets the essential requireme

© National Instruments Corporation B-1 SCXI-1141/1142/1143 User ManualBRemoving the SCXI-1141/1142/1143 ModuleThis appendix describes how to remove th

Contents© National Instruments Corporation vii SCXI-1141/1142/1143 User ManualAppendix BRemoving the SCXI-1141/1142/1143 ModuleAppendix CCommon Questi

Appendix B Removing the SCXI-1141/1142/1143 ModuleSCXI-1141/1142/1143 User Manual B-2 ni.com2. If the SCXI-1141/1142/1143 is the module cabled to the

© National Instruments Corporation C-1 SCXI-1141/1142/1143 User ManualCCommon QuestionsThis appendix lists common questions related to the use of the

Appendix C Common QuestionsSCXI-1141/1142/1143 User Manual C-2 ni.comCan I configure the SCXI-1141/1142/1143 for use in parallel mode?You can configur

Appendix C Common Questions© National Instruments Corporation C-3 SCXI-1141/1142/1143 User ManualIn LabVIEW, can I use different input limits for the

Appendix C Common QuestionsSCXI-1141/1142/1143 User Manual C-4 ni.comWhich accessories can I use to connect signals to the front of the SCXI-1141/1142

© National Instruments Corporation G-1 SCXI-1141/1142/1143 User ManualGlossarySymbol Prefix Valueppico10–12nnano10–9μ micro 10–6m milli 10–3k kilo 103

GlossarySCXI-1141/1142/1143 User Manual G-2 ni.comAA amperesA GND analog ground signalA OUT analog output signalAC alternating currentADE application

Glossary© National Instruments Corporation G-3 SCXI-1141/1142/1143 User ManualDIG GND digital ground signalDIN Deutsche Industrie Norme (German Indust

GlossarySCXI-1141/1142/1143 User Manual G-4 ni.comLlowpass filter a filter that passes signals below a cutoff frequency while blocking signals above t

Glossary© National Instruments Corporation G-5 SCXI-1141/1142/1143 User ManualRrms root mean squarerolloff the ratio that a system attenuates signals

ContentsSCXI-1141/1142/1143 User Manual viii ni.comTablesTable 1-1. Accessories Available for the SCXI-1141/1142/1143... 1-4Tab

GlossarySCXI-1141/1142/1143 User Manual G-6 ni.comTTHD total harmonic distortionTTL transistor-transistor logicVVvoltsVI virtual instrument (a LabVIEW

© National Instruments Corporation I-1 SCXI-1141/1142/1143 User ManualIndexAA GND signalfront connector (table), 2-3rear connector (table), 2-9A OUT s

IndexSCXI-1141/1142/1143 User Manual I-2 ni.comsettings in MAXNI-DAQmx, 3-3creating a global channel or task, 3-3troubleshooting self-test verificatio

Index© National Instruments Corporation I-3 SCXI-1141/1142/1143 User Manualsignal descriptions (table), 2-3front signal connectorpin assignments (figu

IndexSCXI-1141/1142/1143 User Manual I-4 ni.comMeasurement Studio, 1-2creating code for using SCXI-11141/1142/1143, 5-11Module ID register, 4-3modules

Index© National Instruments Corporation I-5 SCXI-1141/1142/1143 User Manualremovingmodules from MAX, B-1SCXI-1141/1142/1143 from SCXI chassis, B-1requ

IndexSCXI-1141/1142/1143 User Manual I-6 ni.comspecificationsamplifier characteristics, A-1CD compliance, A-7digital I/O, A-4electromagnetic compatibi

© National Instruments Corporation 1-1 SCXI-1141/1142/1143 User Manual1About the SCXI-1141/1142/1143This chapter describes the SCXI-1141/1142/1143 mod