National Instruments Computer-Based Instruments Digital Oscilloscope for PCI NI 5911 Manual do Utilizador

Computer-BasedInstrumentsNI 5911 User ManualDigital Oscilloscope for PCINI 5911 User ManualSeptember 2000 EditionPart Number 322150B-01

Chapter 1 Taking Measurements with the NI 5911NI 5911 User Manual 1-4 ni.comAcquiring DataWhen you launch VirtualBench-Scope, it operates in continuou

Chapter 1 Taking Measurements with the NI 5911© National Instruments Corporation 1-5 NI 5911 User ManualNoteWhen you launch VirtualBench-Scope, it aut

Chapter 1 Taking Measurements with the NI 5911NI 5911 User Manual 1-6 ni.comThe VirtualBench-Scope soft front panel has the following features:• Chann

© National Instruments Corporation 2-1 NI 5911 User Manual2Hardware OverviewThis chapter includes an overview of the NI 5911, explains the operation o

Chapter 2 Hardware OverviewNI 5911 User Manual 2-2 ni.comDifferential InputWhen measuring high dynamic range signals, ground noise is often aproblem.

Chapter 2 Hardware Overview© National Instruments Corporation 2-3 NI 5911 User ManualInput RangesTo optimize the ADC resolution, you can select differ

Chapter 2 Hardware OverviewNI 5911 User Manual 2-4 ni.comInput BiasThe inputs of the PGIA typically draw an input bias current of 1 nA at25 °C. Attach

Chapter 2 Hardware Overview© National Instruments Corporation 2-5 NI 5911 User ManualOscilloscope ModeThe ADC converts at a constant rate of 100 MS/s,

Chapter 2 Hardware OverviewNI 5911 User Manual 2-6 ni.comLike any other type of converter that uses noise shaping to enhanceresolution, the frequency

Chapter 2 Hardware Overview© National Instruments Corporation 2-7 NI 5911 User ManualInternally Calibrating the NI 5911Internally calibrate your NI 59

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

Chapter 2 Hardware OverviewNI 5911 User Manual 2-8 ni.comof range and should be recalibrated by performing an internal calibration.During acquisition

Chapter 2 Hardware Overview© National Instruments Corporation 2-9 NI 5911 User ManualFigure 2-3.Trigger SourcesAnalog Trigger CircuitThe analog trigge

Chapter 2 Hardware OverviewNI 5911 User Manual 2-10 ni.comFigure 2-4. Below-Level Analog Triggering ModeIn below-level analog triggering mode, the tri

Chapter 2 Hardware Overview© National Instruments Corporation 2-11 NI 5911 User ManualFigure 2-6.High-Hysteresis Analog Triggering ModeIn high-hystere

Chapter 2 Hardware OverviewNI 5911 User Manual 2-12 ni.comTrigger Hold-OffThe trigger hold-off is a length of time that the NI 5911 waits after a trig

Chapter 2 Hardware Overview© National Instruments Corporation 2-13 NI 5911 User ManualMemoryThe NI 5911 stores samples in onboard memory before transf

Chapter 2 Hardware OverviewNI 5911 User Manual 2-14 ni.comFigure 2-9. Multiple Buffer AcquisitionRTSI Bus Trigger and Clock LinesThe RTSI bus allows N

Chapter 2 Hardware Overview© National Instruments Corporation 2-15 NI 5911 User ManualPFI Lines as OutputsYou can select PFI1 or PFI2 to output severa

© National Instruments Corporation A-1 NI 5911 User ManualASpecificationsThis appendix lists the specifications of the NI 5911. These specificationsar

Appendix A SpecificationsNI 5911 User Manual A-2 ni.comMemory record sizes ...2,000 samples, to maximumsample depth determi

Important InformationWarrantyThe NI 5911 is warranted against defects in materials and workmanship for a period of one year from the date of shipment,

Appendix A Specifications© National Instruments Corporation A-3 NI 5911 User ManualMax measurable input voltage ... ±10 V (DC + peak AC)In

Appendix A SpecificationsNI 5911 User Manual A-4 ni.comDynamic RangeNoise (excluding input-referred noise)DistortionSampling Frequency Bandwidth Noise

Appendix A Specifications© National Instruments Corporation A-5 NI 5911 User ManualTimebase SystemNumber of timebases ... 2,

Appendix A SpecificationsNI 5911 User Manual A-6 ni.comTriggering SystemsModes ...Above threshold, b

Appendix A Specifications© National Instruments Corporation A-7 NI 5911 User ManualAcquisition ModesRIS ...

Appendix A SpecificationsNI 5911 User Manual A-8 ni.comCalibrationInternal...Internal calibration is

© National Instruments Corporation B-1 NI 5911 User ManualBDigitizer BasicsThis appendix explains basic information you need to understand aboutmaking

Appendix B Digitizer BasicsNI 5911 User Manual B-2 ni.comAnalog BandwidthAnalog bandwidth describes the frequency range (in Hertz) in whicha signal ca

Appendix B Digitizer Basics© National Instruments Corporation B-3 NI 5911 User ManualFigure B-3.1MHzSineWaveSampleVertical SensitivityVertical sensiti

Appendix B Digitizer BasicsNI 5911 User Manual B-4 ni.comFigure B-4. Transfer Function of a 3-Bit ADCADC ResolutionADC resolution limits the accuracy

ConventionsThe following conventions are used in this manual:» The » symbol leads you through nested menu items and dialog box optionsto a final actio

Appendix B Digitizer Basics© National Instruments Corporation B-5 NI 5911 User Manualthresholds, programmable hysteresis values, and trigger hold-off.

Appendix B Digitizer BasicsNI 5911 User Manual B-6 ni.comFigure B-5. Waveform Reconstruction with RISThe time measurement is made with a time-to-digit

Appendix B Digitizer Basics© National Instruments Corporation B-7 NI 5911 User ManualFor example, consider the maximum interpolation factor to be 5. I

Appendix B Digitizer BasicsNI 5911 User Manual B-8 ni.comFigure B-7. Dynamic Range of an 8-Bit ADC with Three Different Gain Settings+127 LSB+38.4 LSB

Appendix B Digitizer Basics© National Instruments Corporation B-9 NI 5911 User Manual• Source impedance—Most digitizers and digital storage oscillosco

Appendix B Digitizer BasicsNI 5911 User Manual B-10 ni.comFigure B-8. Difficult Pulse Train SignalIdeally, the trigger event should occur at condition

© National Instruments Corporation C-1 NI 5911 User ManualCTechnical Support ResourcesWeb SupportNational Instruments Web support is your first stop f

Appendix C Technical Support ResourcesNI 5911 User Manual C-2 ni.comWorldwide SupportNational Instruments has offices located around the world to help

© National Instruments Corporation G-1 NI 5911 User ManualGlossaryPrefix Meanings Valuep- pico- 10–12n- nano- 10–9µ- micro- 10– 6m- milli- 10–3k- kilo

GlossaryNI 5911 User Manual G-2 ni.comAC coupled the passing of a signal through a filter network that removes theDC component of the signalADC analog

© National Instruments Corporation v NI 5911 User ManualContentsChapter 1Taking Measurements with the NI 5911Installing the NI 5911 ...

Glossary© National Instruments Corporation G-3 NI 5911 User Manualclock hardware component that controls timing for reading from or writing togroupsCM

GlossaryNI 5911 User Manual G-4 ni.comFfiltering a type of signal conditioning that allows you to filter unwanted signals fromthe signal you are tryin

Glossary© National Instruments Corporation G-5 NI 5911 User Manualinterrupt level the relative priority at which a device can interruptISA industry st

GlossaryNI 5911 User Manual G-6 ni.comNnoise an undesirable electrical signal—Noise comes from external sources suchas the AC power line, motors, gene

Glossary© National Instruments Corporation G-7 NI 5911 User Manualpretriggering the technique used on a device to keep a buffer filled with data, so t

GlossaryNI 5911 User Manual G-8 ni.comsense in four-wire resistance the sense measures the voltage across the resistorbeing excited by the excitation

Glossary© National Instruments Corporation G-9 NI 5911 User ManualVV voltsVAC volts alternating currentVDC volts direct currentVerrorvoltage errorVI v

© National Instruments Corporation I-1 NI 5911 User ManualIndexNumbers+5 V signallimitation on current (note), 1-3self-resetting fuse (note), 1-3AAC c

IndexNI 5911 User Manual I-2 ni.comnoise-free signal measurement(figure), 2-2digitizers,B-1toB-10ADC resolution, B-4analog bandwidth, B-2making accura

Index© National Instruments Corporation I-3 NI 5911 User ManualIimpedanceformula for impedance divider, 2-3input and output impedance, 2-3source imped

ContentsNI 5911 User Manual vi ni.comRTSI Bus Trigger and Clock Lines... 2

IndexNI 5911 User Manual I-4 ni.compower requirement specifications, A-7programmatically controlling NI 5911, 1-3pulse train signal, difficult (figure

Index© National Instruments Corporation I-5 NI 5911 User ManualVvertical sensitivitydigitizers,B-3toB-4specifications, A-2VirtualBench-Scope soft fron

© National Instruments Corporation 1-1 NI 5911 User Manual1Taking Measurementswith the NI 5911Thank you for buying a National Instruments 5911 digital

Chapter 1 Taking Measurements with the NI 5911NI 5911 User Manual 1-2 ni.comFigure 1-1. NI 5911 ConnectorsFigure 1-2. 9-Pin Mini Circular DIN Connecto

Chapter 1 Taking Measurements with the NI 5911© National Instruments Corporation 1-3 NI 5911 User ManualNoteThe +5 V signal is fused at 1.1 A. However