National Instruments NI 6232 Manual de usuario

DAQ M SeriesNI 6232/6233 User ManualNI 6232/6233 User ManualJuly 2006371995A-01

Contents© National Instruments Corporation xi NI 6232/6233 User ManualPosition Measurement ...

Chapter 7 Counters© National Instruments Corporation 7-27 NI 6232/6233 User ManualCounter n Source SignalThe selected edge of the Counter n Source sig

Chapter 7 CountersNI 6232/6233 User Manual 7-28 ni.comRouting Counter n Source to an Output TerminalYou can route Counter n Source out to any output P

Chapter 7 Counters© National Instruments Corporation 7-29 NI 6232/6233 User ManualRouting a Signal to Counter n AuxEach counter has independent input

Chapter 7 CountersNI 6232/6233 User Manual 7-30 ni.comCounter n HW Arm SignalThe Counter n HW Arm signal enables a counter to begin an input or output

Chapter 7 Counters© National Instruments Corporation 7-31 NI 6232/6233 User ManualRouting Counter n Internal Output to an Output TerminalYou can route

Chapter 7 CountersNI 6232/6233 User Manual 7-32 ni.comYou can use these defaults or select other sources and destinations for the counter/timer signal

Chapter 7 Counters© National Instruments Corporation 7-33 NI 6232/6233 User ManualPause TriggerYou can use pause triggers in edge counting and continu

Chapter 7 CountersNI 6232/6233 User Manual 7-34 ni.comThe filter setting for each input can be configured independently. On power up, the filters are

Chapter 7 Counters© National Instruments Corporation 7-35 NI 6232/6233 User Manualprescaling on each counter (prescaling can be disabled). Each presca

Chapter 7 CountersNI 6232/6233 User Manual 7-36 ni.comFigure 7-31. Duplicate Count Prevention ExampleOn the first rising edge of the Gate, the curren

ContentsNI 6232/6233 User Manual xii ni.comPrescaling ...

Chapter 7 Counters© National Instruments Corporation 7-37 NI 6232/6233 User ManualFigure 7-32. Duplicate Count ExampleExample Application That Preven

Chapter 7 CountersNI 6232/6233 User Manual 7-38 ni.comNormally, the counter value and Counter n Internal Output signals change synchronously to the So

Chapter 7 Counters© National Instruments Corporation 7-39 NI 6232/6233 User ManualIn DAQmx, the device uses 80 MHz source mode if the user performs th

Chapter 7 CountersNI 6232/6233 User Manual 7-40 ni.comOther Internal Source ModeIn other internal source mode, the device synchronizes signals on the

© National Instruments Corporation 8-1 NI 6232/6233 User Manual8PFINI 6232/6233 devices have 10 Programmable Function Interface (PFI) signals—six inpu

Chapter 8 PFINI 6232/6233 User Manual 8-2 ni.comFigure 8-2. NI 6232/6233 PFI Output CircuitryWhen a terminal is used as a timing input or output sign

Chapter 8 PFI© National Instruments Corporation 8-3 NI 6232/6233 User ManualExporting Timing Output Signals Using PFI TerminalsYou can route any of th

Chapter 8 PFINI 6232/6233 User Manual 8-4 ni.comFigure 8-3. PFI Input Signals ConnectionsPFI FiltersYou can enable a programmable debouncing filter o

Chapter 8 PFI© National Instruments Corporation 8-5 NI 6232/6233 User ManualThe filter setting for each input can be configured independently. On powe

Chapter 8 PFINI 6232/6233 User Manual 8-6 ni.comConsult the device specifications for details. However, you should avoid these fault conditions by fol

Contents© National Instruments Corporation xiii NI 6232/6233 User ManualUsing RTSI Terminals as Timing Input Signals ...

Chapter 8 PFI© National Instruments Corporation 8-7 NI 6232/6233 User ManualFigure 8-5. NI 6232 Digital I/O Connections (DO Source)P1.<0..3>P1.

Chapter 8 PFINI 6232/6233 User Manual 8-8 ni.comFigure 8-6. NI 6233 Digital I/O Connections (DO Sink)Caution Exceeding the maximum input voltage or

© National Instruments Corporation 9-1 NI 6232/6233 User Manual9Isolation and Digital IsolatorsNI 6232/6233 devices are isolated data acquisition devi

Chapter 9 Isolation and Digital IsolatorsNI 6232/6233 User Manual 9-2 ni.comThe non-isolated ground is connected to the chassis ground of the PC or ch

© National Instruments Corporation 10-1 NI 6232/6233 User Manual10Digital Routing and Clock GenerationThe digital routing circuitry has the following

Chapter 10 Digital Routing and Clock GenerationNI 6232/6233 User Manual 10-2 ni.com80 MHz TimebaseThe 80 MHz Timebase can be used as the Source input

Chapter 10 Digital Routing and Clock Generation© National Instruments Corporation 10-3 NI 6232/6233 User Manual10 MHz Reference ClockThe 10 MHz refere

Chapter 10 Digital Routing and Clock GenerationNI 6232/6233 User Manual 10-4 ni.com• Share trigger signals between devicesMany National Instruments DA

Chapter 10 Digital Routing and Clock Generation© National Instruments Corporation 10-5 NI 6232/6233 User ManualUsing RTSI as OutputsRTSI <0..7>

Chapter 10 Digital Routing and Clock GenerationNI 6232/6233 User Manual 10-6 ni.comUsing RTSI Terminals as Timing Input SignalsYou can use RTSI termin

© National Instruments Corporation xv NI 6232/6233 User ManualAbout This ManualThe NI 6232/6233 User Manual contains information about using the Natio

Chapter 10 Digital Routing and Clock Generation© National Instruments Corporation 10-7 NI 6232/6233 User ManualThe filter setting for each input can b

Chapter 10 Digital Routing and Clock GenerationNI 6232/6233 User Manual 10-8 ni.comPXI Clock and Trigger SignalsNote PXI clock and trigger signals a

Chapter 10 Digital Routing and Clock Generation© National Instruments Corporation 10-9 NI 6232/6233 User ManualAn M Series device is not a Star Trigge

Chapter 10 Digital Routing and Clock GenerationNI 6232/6233 User Manual 10-10 ni.comFigure 10-4. Filter ExampleEnabling filters introduces jitter on

© National Instruments Corporation 11-1 NI 6232/6233 User Manual11Bus InterfaceThe bus interface circuitry of NI 6232/6233 devices efficiently moves d

Chapter 11 Bus InterfaceNI 6232/6233 User Manual 11-2 ni.comEach DMA controller supports packing and unpacking of data through the FIFOs to connect di

Chapter 11 Bus Interface© National Instruments Corporation 11-3 NI 6232/6233 User ManualUsing PXI with CompactPCIUsing PXI-compatible products with st

Chapter 11 Bus InterfaceNI 6232/6233 User Manual 11-4 ni.comInterrupt Request (IRQ)IRQ transfers rely on the CPU to service data transfer requests. Th

© National Instruments Corporation 12-1 NI 6232/6233 User Manual12TriggeringA trigger is a signal that causes an action, such as starting or stopping

Chapter 12 TriggeringNI 6232/6233 User Manual 12-2 ni.com• Analog output generation• Counter behavior

About This ManualNI 6232/6233 User Manual xvi ni.commonospace Text in this font denotes text or characters that you should enter from the keyboard, se

© National Instruments Corporation A-1 NI 6232/6233 User ManualADevice-Specific InformationThis appendix contains device pinouts, specifications, cabl

Appendix A Device-Specific InformationNI 6232/6233 User Manual A-2 ni.comFigure A-1. NI 6232 PinoutTable A-1. NI 6232 Device Default NI-DAQmx Counte

Appendix A Device-Specific Information© National Instruments Corporation A-3 NI 6232/6233 User ManualNote For more information about default NI-DAQm

Appendix A Device-Specific InformationNI 6232/6233 User Manual A-4 ni.comvision, and motion devices. Since PXI devices use PXI backplane signals for t

Appendix A Device-Specific Information© National Instruments Corporation A-5 NI 6232/6233 User ManualFigure A-2. NI 6233 PinoutTable A-2. NI 6233 De

Appendix A Device-Specific InformationNI 6232/6233 User Manual A-6 ni.comNote For more information about default NI-DAQmx counter inputs, refer to C

Appendix A Device-Specific Information© National Instruments Corporation A-7 NI 6232/6233 User Manualvision, and motion devices. Since PXI devices use

© National Instruments Corporation B-1 NI 6232/6233 User ManualBTroubleshootingThis section contains some common questions about M Series devices. If

Appendix B TroubleshootingNI 6232/6233 User Manual B-2 ni.comreference the signal to the same ground level as the device reference. There are various

Appendix B Troubleshooting© National Instruments Corporation B-3 NI 6232/6233 User ManualAnalog OutputI am seeing glitches on the output signal. How c

About This Manual© National Instruments Corporation xvii NI 6232/6233 User ManualThe NI-DAQmx for Linux Configuration Guide provides configuration ins

© National Instruments Corporation C-1 NI 6232/6233 User ManualCTechnical Support and Professional ServicesVisit the following sections of the Nationa

Appendix C Technical Support and Professional ServicesNI 6232/6233 User Manual C-2 ni.com• Calibration Certificate—If your product supports calibratio

© National Instruments Corporation G-1 NI 6232/6233 User ManualGlossaryNumbers/Symbols% Percent.+ Positive of, or plus.– Negative of, or minus.± Plus

GlossaryNI 6232/6233 User Manual G-2 ni.comAI 1. Analog input.2. Analog input channel signal.AI GND Analog input ground signal.AI SENSE Analog input s

Glossary© National Instruments Corporation G-3 NI 6232/6233 User ManualASIC Application-specific integrated circuit—A proprietary semiconductor compon

GlossaryNI 6232/6233 User Manual G-4 ni.comcascading Process of extending the counting range of a counter chip by connecting to the next higher counte

Glossary© National Instruments Corporation G-5 NI 6232/6233 User Manualcounter/timer A circuit that counts external pulses or clock pulses (timing).DD

GlossaryNI 6232/6233 User Manual G-6 ni.comdata transfer A technique for moving digital data from one system to another.Options for data transfer are

Glossary© National Instruments Corporation G-7 NI 6232/6233 User Manualdigital signal A representation of information by a set of discrete values acco

GlossaryNI 6232/6233 User Manual G-8 ni.comFFIFO First-In-First-Out memory buffer—A data buffering technique that functions like a shift register wher

About This ManualNI 6232/6233 User Manual xviii ni.com• Getting Started»Getting Started with DAQ—Includes overview information and a tutorial to learn

Glossary© National Instruments Corporation G-9 NI 6232/6233 User Manualfunction 1. A built-in execution element, comparable to an operator, function,

GlossaryNI 6232/6233 User Manual G-10 ni.comin. Inch or inches.instrument driver A set of high-level software functions that controls a specific GPIB,

Glossary© National Instruments Corporation G-11 NI 6232/6233 User ManualKkHz Kilohertz—A unit of frequency; 1 kHz = 103 = 1,000 Hz.kS 1,000 samples.LL

GlossaryNI 6232/6233 User Manual G-12 ni.comMITE MXI Interface To Everything—A custom ASIC designed by National Instruments that implements the PCI bu

Glossary© National Instruments Corporation G-13 NI 6232/6233 User ManualNI-PGIA See instrumentation amplifier.non-referenced signal sourcesSignal sour

GlossaryNI 6232/6233 User Manual G-14 ni.compower source An instrument that provides one or more sources of AC or DC power. Also known as power supply

Glossary© National Instruments Corporation G-15 NI 6232/6233 User ManualRrange The maximum and minimum parameters between which a sensor, instrument,

GlossaryNI 6232/6233 User Manual G-16 ni.comscan rate Reciprocal of the scan interval.SCC Signal Conditioning Carriers—A compact, modular form factor

Glossary© National Instruments Corporation G-17 NI 6232/6233 User Manualsoftware applications The programs that run on your computer and perform a spe

GlossaryNI 6232/6233 User Manual G-18 ni.comtoutOutput delay time.transducer A device that responds to a physical stimulus (heat, light, sound, pressu

About This Manual© National Instruments Corporation xix NI 6232/6233 User Manual.NET and Visual C++ class libraries. This help collection is integrate

Glossary© National Instruments Corporation G-19 NI 6232/6233 User ManualVmMeasured voltage.VOHVolts, output high.VOLVolts, output low.VoutVolts out.Vs

© National Instruments Corporation I-1 NI 6232/6233 User ManualIndexSymbols.NET languages documentation, xviiiNumerics10 MHz reference clock, 10-3100

IndexNI 6232/6233 User Manual I-2 ni.comgetting started with applications in software, 5-10glitches on the output signal, 5-2signals, 5-5timing signal

Index© National Instruments Corporation I-3 NI 6232/6233 User Manualfor ground-referenced signal sources, 4-14for non-referenced signal sources, 4-15s

IndexNI 6232/6233 User Manual I-4 ni.comdata transfer methods, 11-3changing, 11-4DMA, 11-3IRQ, 11-4programmed I/O, 11-4Declaration of Conformity (NI r

Index© National Instruments Corporation I-5 NI 6232/6233 User ManualFfeatures, counter, 7-33field wiring considerations, 4-18filterscounter, 7-33PFI,

IndexNI 6232/6233 User Manual I-6 ni.comisolation barrier, 4-2, 5-2isolators, 9-1KKnowledgeBase, C-1LLabVIEW documentation, xviiLabWindows/CVI documen

Index© National Instruments Corporation I-7 NI 6232/6233 User Manualnon-buffered hardware-timedacquisitions, 4-11generations, 5-3non-cumulative buffer

IndexNI 6232/6233 User Manual I-8 ni.comretriggerable single pulse generation, 7-22routingclock, 10-1digital, 10-1RSE configuration, 4-16RTSI, 10-3con

Index© National Instruments Corporation I-9 NI 6232/6233 User Manualconnections, NRSE configuration, 4-16connections, RSE configuration, 4-16softwarec

© National Instruments Corporation 1-1 NI 6232/6233 User Manual1Getting StartedM Series NI 6232/6233 devices feature sixteen analog input (AI) channel

IndexNI 6232/6233 User Manual I-10 ni.comVvoltageconnecting analog input signals, 4-11connecting analog voltage, 5-4Wwaveform generation signals, 5-5W

Chapter 1 Getting StartedNI 6232/6233 User Manual 1-2 ni.comDevice SpecificationsRefer to the NI 6232/6233 Specifications, available on the NI-DAQ Dev

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

© National Instruments Corporation 2-1 NI 6232/6233 User Manual2DAQ System OverviewFigure 2-1 shows a typical DAQ system, which includes sensors, tran

Chapter 2 DAQ System OverviewNI 6232/6233 User Manual 2-2 ni.comFigure 2-2. General NI 6232/6233 Block DiagramDAQ-STC2The DAQ-STC2 implements a high-

Chapter 2 DAQ System Overview© National Instruments Corporation 2-3 NI 6232/6233 User ManualCalibration CircuitryThe M Series analog inputs and output

Chapter 2 DAQ System OverviewNI 6232/6233 User Manual 2-4 ni.comCables and AccessoriesNI offers a variety of products to use with NI 6232/6233 devices

Chapter 2 DAQ System Overview© National Instruments Corporation 2-5 NI 6232/6233 User ManualProgramming Devices in SoftwareNational Instruments measur

© National Instruments Corporation 3-1 NI 6232/6233 User Manual3Connector InformationThe I/O Connector Signal Descriptions and RTSI Connector Pinout s

Chapter 3 Connector InformationNI 6232/6233 User Manual 3-2 ni.comAO GND — — Analog Output Ground—AO GND is the reference for AO <0..1>. AI GND

Chapter 3 Connector Information© National Instruments Corporation 3-3 NI 6232/6233 User ManualRTSI Connector PinoutRefer to the RTSI Connector Pinout

© National Instruments Corporation 4-1 NI 6232/6233 User Manual4Analog InputFigure 4-1 shows the analog input circuitry of NI 6232/6233 devices.Figure

Chapter 4 Analog InputNI 6232/6233 User Manual 4-2 ni.comGround-Reference SettingsThe analog input ground-reference settings circuitry selects between

Important InformationWarrantyThe NI 6232/6233 is warranted against defects in materials and workmanship for a period of three years from the date of

Chapter 4 Analog Input© National Instruments Corporation 4-3 NI 6232/6233 User Manual16-bit ADC converts analog inputs into one of 65,536 (= 216) code

Chapter 4 Analog InputNI 6232/6233 User Manual 4-4 ni.comThe AI ground-reference setting determines how you should connect your AI signals to the NI 6

Chapter 4 Analog Input© National Instruments Corporation 4-5 NI 6232/6233 User ManualTable 4-3 shows how signals are routed to the NI-PGIA.For differe

Chapter 4 Analog InputNI 6232/6233 User Manual 4-6 ni.comFigure 4-3. Enabling Multimode Scanning in LabVIEWMultichannel Scanning ConsiderationsM Seri

Chapter 4 Analog Input© National Instruments Corporation 4-7 NI 6232/6233 User ManualSettling times increase when scanning high-impedance signals due

Chapter 4 Analog InputNI 6232/6233 User Manual 4-8 ni.com1/50 LSB) of the ±10 V range. Some devices can take many microseconds for the circuitry to se

Chapter 4 Analog Input© National Instruments Corporation 4-9 NI 6232/6233 User ManualAvoid Scanning Faster Than NecessaryDesigning your system to scan

Chapter 4 Analog InputNI 6232/6233 User Manual 4-10 ni.comeach ADC conversion. In NI-DAQmx, software-timed acquisitions are referred to as having on-d

Chapter 4 Analog Input© National Instruments Corporation 4-11 NI 6232/6233 User Manualbe transferred to host memory. The device generates an error in

Chapter 4 Analog InputNI 6232/6233 User Manual 4-12 ni.comRefer to the Analog Input Ground-Reference Settings section for descriptions of DIFF and RSE

NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY L

Chapter 4 Analog Input© National Instruments Corporation 4-13 NI 6232/6233 User Manualtwo reference planes. Isolated front ends require a ground-refer

Chapter 4 Analog InputNI 6232/6233 User Manual 4-14 ni.comUse DIFF input connections for any channel that meets any of the following conditions:• The

Chapter 4 Analog Input© National Instruments Corporation 4-15 NI 6232/6233 User ManualWith this type of connection, the PGIA rejects both the common-m

Chapter 4 Analog InputNI 6232/6233 User Manual 4-16 ni.comFigure 4-5. Differential Connections for Floating Signal SourcesThis figure shows AI GND co

Chapter 4 Analog Input© National Instruments Corporation 4-17 NI 6232/6233 User Manualsignal connects to the positive input of the PGIA, and the groun

Chapter 4 Analog InputNI 6232/6233 User Manual 4-18 ni.comFigure 4-6. Single-Ended Connections for Floating Signal Sources (RSE Configuration)Refer t

Chapter 4 Analog Input© National Instruments Corporation 4-19 NI 6232/6233 User Manual• Use individually shielded, twisted-pair wires to connect AI si

Chapter 4 Analog InputNI 6232/6233 User Manual 4-20 ni.com1/Sample Period = Sample RateFigure 4-8. Interval Samplingai/ConvertClock controls the Conv

Chapter 4 Analog Input© National Instruments Corporation 4-21 NI 6232/6233 User Manualthe PCI-6220 M Series device, a sampling rate of 40 kHz for two

Chapter 4 Analog InputNI 6232/6233 User Manual 4-22 ni.comFigure 4-10. Pretriggered Data Acquisition ExampleIf an ai/ReferenceTrigger pulse occurs be

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

Chapter 4 Analog Input© National Instruments Corporation 4-23 NI 6232/6233 User ManualUsing an Internal SourceOne of the following internal signals ca

Chapter 4 Analog InputNI 6232/6233 User Manual 4-24 ni.comA counter on your device internally generates ai/SampleClock unless you select some external

Chapter 4 Analog Input© National Instruments Corporation 4-25 NI 6232/6233 User Manualsources for ai/SampleClock. You can configure the polarity selec

Chapter 4 Analog InputNI 6232/6233 User Manual 4-26 ni.comUsing an External SourceUse one of the following external signals as the source of ai/Conver

Chapter 4 Analog Input© National Instruments Corporation 4-27 NI 6232/6233 User ManualOther Timing RequirementsThe sample and conversion level timing

Chapter 4 Analog InputNI 6232/6233 User Manual 4-28 ni.comai/ConvertClockTimebase is not available as an output on the I/O connector.AI Hold Complete

Chapter 4 Analog Input© National Instruments Corporation 4-29 NI 6232/6233 User ManualYou also can specify whether the measurement acquisition begins

Chapter 4 Analog InputNI 6232/6233 User Manual 4-30 ni.comFigure 4-14. Reference Trigger Final BufferUsing a Digital SourceTo use ai/ReferenceTrigger

Chapter 4 Analog Input© National Instruments Corporation 4-31 NI 6232/6233 User ManualUsing a Digital SourceTo use ai/SampleClock, specify a source an

© National Instruments Corporation 5-1 NI 6232/6233 User Manual5Analog OutputNI 6232/6233 devices have two AO channels that are controlled by a single

© National Instruments Corporation vii NI 6232/6233 User ManualContentsAbout This ManualConventions ...

Chapter 5 Analog OutputNI 6232/6233 User Manual 5-2 ni.comDACs. It allows you to download the points of a waveform to your M Series device without hos

Chapter 5 Analog Output© National Instruments Corporation 5-3 NI 6232/6233 User ManualHardware-Timed GenerationsWith a hardware-timed generation, a di

Chapter 5 Analog OutputNI 6232/6233 User Manual 5-4 ni.comRegeneration is the repetition of the data that is already in the buffer. Standard regenerat

Chapter 5 Analog Output© National Instruments Corporation 5-5 NI 6232/6233 User ManualFigure 5-2. Analog Output ConnectionsAnalog Output Timing Signa

Chapter 5 Analog OutputNI 6232/6233 User Manual 5-6 ni.comFigure 5-3. Analog Output Timing OptionsNI 6232/6233 devices feature the following AO (wave

Chapter 5 Analog Output© National Instruments Corporation 5-7 NI 6232/6233 User ManualThe source also can be one of several internal signals on your D

Chapter 5 Analog OutputNI 6232/6233 User Manual 5-8 ni.comdeasserted and another edge of the sample clock is received, as shown in Figure 5-5.Figure 5

Chapter 5 Analog Output© National Instruments Corporation 5-9 NI 6232/6233 User ManualUsing an Internal SourceOne of the following internal signals ca

Chapter 5 Analog OutputNI 6232/6233 User Manual 5-10 ni.comFigure 5-6. ao/SampleClock and ao/StartTriggerAO Sample Clock Timebase SignalThe AO Sample

Chapter 5 Analog Output© National Instruments Corporation 5-11 NI 6232/6233 User Manual• Finite generation• Continuous generation• Waveform generation

ContentsNI 6232/6233 User Manual viii ni.comChapter 3Connector InformationI/O Connector Signal Descriptions...

© National Instruments Corporation 6-1 NI 6232/6233 User Manual6Digital Input and OutputNI 6232/6233 devices have six static digital input lines, P0.&

Chapter 6 Digital Input and OutputNI 6232/6233 User Manual 6-2 ni.comConnecting Digital I/O SignalsThe DI signals P0.<0..5> are referenced to P0

Chapter 6 Digital Input and Output© National Instruments Corporation 6-3 NI 6232/6233 User ManualFigure 6-2. NI 6233 Digital I/O Connections (DO Sink

Chapter 6 Digital Input and OutputNI 6232/6233 User Manual 6-4 ni.comGetting Started with DIO Applications in SoftwareYou can use NI 6232/6233 devices

© National Instruments Corporation 7-1 NI 6232/6233 User Manual7CountersNI 6232/6233 devices have two general-purpose 32-bit counter/timers and one fr

Chapter 7 CountersNI 6232/6233 User Manual 7-2 ni.comFigure 7-1. M Series CountersThe counters have seven input signals, although in most application

Chapter 7 Counters© National Instruments Corporation 7-3 NI 6232/6233 User ManualCounter Input ApplicationsCounting EdgesIn edge counting applications

Chapter 7 CountersNI 6232/6233 User Manual 7-4 ni.comFigure 7-3. Single Point (On-Demand) Edge Counting with Pause TriggerBuffered (Sample Clock) Edg

Chapter 7 Counters© National Instruments Corporation 7-5 NI 6232/6233 User ManualNon-Cumulative Buffered Edge CountingNon-cumulative edge counting is

Chapter 7 CountersNI 6232/6233 User Manual 7-6 ni.comPulse-Width MeasurementIn pulse-width measurements, the counter measures the width of a pulse on

Contents© National Instruments Corporation ix NI 6232/6233 User ManualUsing an External Source...

Chapter 7 Counters© National Instruments Corporation 7-7 NI 6232/6233 User ManualBuffered Pulse-Width MeasurementBuffered pulse-width measurement is s

Chapter 7 CountersNI 6232/6233 User Manual 7-8 ni.comof rising (or falling) edges occurring on the Source input between the two active edges of the Ga

Chapter 7 Counters© National Instruments Corporation 7-9 NI 6232/6233 User ManualFigure 7-9. Buffered Period MeasurementNote that if you are using an

Chapter 7 CountersNI 6232/6233 User Manual 7-10 ni.comBuffered Semi-Period MeasurementIn buffered semi-period measurement, on each edge of the Gate si

Chapter 7 Counters© National Instruments Corporation 7-11 NI 6232/6233 User ManualYou can route the signal to measure (F1) to the Gate of a counter. Y

Chapter 7 CountersNI 6232/6233 User Manual 7-12 ni.comFigure 7-12. Method 1bMethod 2—Measure High Frequency with Two CountersIn this method, you meas

Chapter 7 Counters© National Instruments Corporation 7-13 NI 6232/6233 User ManualFigure 7-13. Method 2Method 3—Measure Large Range of Frequencies Us

Chapter 7 CountersNI 6232/6233 User Manual 7-14 ni.comFigure 7-14. Method 3Then route the Counter 0 Internal Output signal to the Gate input of Count

Chapter 7 Counters© National Instruments Corporation 7-15 NI 6232/6233 User ManualConsider a frequency measurement on a 50 kHz signal using an 80 MHz

Chapter 7 CountersNI 6232/6233 User Manual 7-16 ni.comFor information on connecting counter signals, refer to the Default Counter Terminals section.Po

ContentsNI 6232/6233 User Manual x ni.comAO Sample Clock Signal ... 5-8Us

Chapter 7 Counters© National Instruments Corporation 7-17 NI 6232/6233 User ManualFigure 7-15. X1 EncodingX2 EncodingThe same behavior holds for X2 e

Chapter 7 CountersNI 6232/6233 User Manual 7-18 ni.comChannel Z behavior—when it goes high and how long it stays high—differs with quadrature encoder

Chapter 7 Counters© National Instruments Corporation 7-19 NI 6232/6233 User ManualFor information on connecting counter signals, refer to the Default

Chapter 7 CountersNI 6232/6233 User Manual 7-20 ni.comFigure 7-20. Single Two-Signal Edge-Separation MeasurementBuffered Two-Signal Edge-Separation M

Chapter 7 Counters© National Instruments Corporation 7-21 NI 6232/6233 User ManualCounter Output ApplicationsSimple Pulse GenerationSingle Pulse Gener

Chapter 7 CountersNI 6232/6233 User Manual 7-22 ni.comFigure 7-23. Single Pulse Generation with Start TriggerRetriggerable Single Pulse GenerationThe

Chapter 7 Counters© National Instruments Corporation 7-23 NI 6232/6233 User ManualPulse Train GenerationContinuous Pulse Train GenerationThis function

Chapter 7 CountersNI 6232/6233 User Manual 7-24 ni.comFrequency GenerationYou can generate a frequency by using a counter in pulse train generation mo

Chapter 7 Counters© National Instruments Corporation 7-25 NI 6232/6233 User ManualFrequency Output can be routed out to any output PFI <6..9> or

Chapter 7 CountersNI 6232/6233 User Manual 7-26 ni.comNyquist frequency of the system. Figure 7-28 shows an example of pulse generation for ETS; the d