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National Instruments NI PXI PCI-1411 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    NI Vision NI PXI/PCI-1411 User Manual Single-Channel Color Im age Acquisition Device NI PXI/PCI-1411 User Manual February 2007 372157D-01[...]

  • Page 2

    Support Worldwide Technical Support and Product Info rmation ni.com National Instruments Corporate Headquarters 11500 North Mopac Expressway Aust in, Texas 78759-3504 USA Tel: 512 683 0100 Worldwide Offices Australia 1800 300 800, Austria 43 662 457990-0, Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599, Canada 800 433 3488, China 86 21 6555 7838,[...]

  • Page 3

    Important Information Warranty The NI PXI/PCI-1411 is warranted against defects in materials and workmanshi p for a period of one year from the date of shipmen t, as evidenced by recei pts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty peri od. This warra[...]

  • Page 4

    Compliance Compliance with FCC/Canada Radio Frequency Interference Regulations Determining FCC Class The Federal Communications Commission (FCC) has rules to protect wireless co mmunications from inte rference. The FCC places digital electronics into two classes. These classes are known as Class A (for use in industrial-commercial locations onl y) [...]

  • Page 5

    Conventions The follo wing con ventions are used in this manual: » The » symbol l eads you through nested menu items and dialog box options to a final action. The sequence File»Page Setup»Options directs yo u to pull down the File menu, select the Page Setup item, and select Options from the last dialog box. ♦ The ♦ symbol indicates that th[...]

  • Page 6

    © National Instruments Corporatio n vii NI PXI/PCI-1411 User Manual Contents Chapter 1 Introduction About the NI 1411 .......... .............. ................................................................. ............ .... 1-1 Using PXI with CompactPCI ................. .............. .............. ........... ............... .............. [...]

  • Page 7

    Contents NI PXI/PCI-1411 User Manual viii ni.com Appendix B Technical Support and Professional Services Glossary Index[...]

  • Page 8

    © National Instruments Corporatio n 1-1 NI PXI/PCI-1411 User Manual 1 Introduction This chapter describes the NI PXI/PCI-1411 (NI 1411) and describes you r software programming choices. About the NI 1411 The NI 1411 is a monochrome an d color image acquisition d evice for PXI, PCI, or CompactPCI chassis that su pports a diverse range of analog cam[...]

  • Page 9

    Chapter 1 Introduction NI PXI/PCI-1411 User M anual 1-2 ni.com Using PXI with CompactPCI Using PXI-compatib le products with st andard CompactPCI products is an important feature provided b y the PXI S pecification , Revision 1.0. If you use a PXI-compatible plug-in device in a standard CompactPCI chassis, you cannot use PXI-specific function s, bu[...]

  • Page 10

    Chapter 1 Introduction © National Instruments Corporatio n 1-3 NI PXI/PCI-1411 User Manual NI-IMA Q performs all functi ons required for acquiring and saving images but does not perform image analysis. For image analysis function ality , refer to the National Instruments Applica tion Software section of this chapter . NI-IMA Q also provides the in[...]

  • Page 11

    Chapter 1 Introduction NI PXI/PCI-1411 User M anual 1-4 ni.com Vision Development Module The Vision Development Module is an image acqu isition, processing, and analysis library of more than 270 functions for the foll owing common machine vision tasks: • Patter n matching • Particle analysis •G a u g i n g • T aking measurements • Graysca[...]

  • Page 12

    © National Instruments Corporatio n 2-1 NI PXI/PCI-1411 User Manual 2 Hardware Over view This chapter presents an overview of the hardware functions on the NI 1411 and explains the operation of each function al unit making up the NI 1411. Functional Over view The NI 1411 features a fl exible, high-speed data path optimized for the acquisition and [...]

  • Page 13

    Chapter 2 Hardware Overview NI PXI/PCI-1411 User M anual 2-2 ni.com Video Decoder The NI 1411 supports NTSC and PAL video standard s in either composite or S-Video format. The onboard video decoder converts the incoming video signal to Red, Green, an d Blue (RGB) data and p asses this data to the color-space processor for further processing. The vi[...]

  • Page 14

    Chapter 2 Hardware Overview © National Instruments Corporatio n 2-3 NI PXI/PCI-1411 User Manual The color-space processor can e xport the video data in 32-bit RGB or HSL formats or in individual 8-bit hue, saturation, or luminance planes. For more information on thes e image types, see the Image Representations section in Appe ndix A, Introductio [...]

  • Page 15

    Chapter 2 Hardware Overview NI PXI/PCI-1411 User M anual 2-4 ni.com read and write cycles, both single a nd multi ple. In slave mode, the NI 1411 is a medium-speed decoder that accepts both memory and configuration cycles. The interface logic ensures that the NI 1411 can meet PCI loading, driving, and timing requirements. Board Configuration NVRAM [...]

  • Page 16

    Chapter 2 Hardware Overview © National Instruments Corporatio n 2-5 NI PXI/PCI-1411 User Manual • Scaling down —The scaling down circuitry also controls the acti ve acquisition region. The NI 1411 can scale down a frame by reducing the number of pixels per line, the number of lines per frame, or both. For acti ve pixel selection, the NI 1411 c[...]

  • Page 17

    © National Instruments Corporatio n 3-1 NI PXI/PCI-1411 User Manual 3 Signal Connections This chapter describes cable connections for the NI 1411. I/O Connector The NI 1411 uses one S-Video and two BNC connectors on the front pane l to connect to video data inputs and the extern al trigger signal. Figure 3-1 shows the position of the three con nec[...]

  • Page 18

    Chapter 3 Signal Connections NI PXI/PCI-1411 User M anual 3-2 ni.com Signal Description Table 3-1 describes each signal co nnection on the NI 1411 device connectors: Custom Cables If you plan to make your own cables, refer to Figure 3-2 fo r the pin-out of the S-Video connector, as seen from the front of the NI 1411. Figure 3-2. S-Video Connector P[...]

  • Page 19

    © National Instruments Corporatio n A-1 NI PXI/PCI-1411 User Manual A Introduction to Color Color is the wa velength of the light we recei ve in our eye when we look at an object. In theory , the color spectru m is infinite. Humans, ho we ver , can see only a small portion of this sp ectrum—the portion that goes from the red edge of infrared lig[...]

  • Page 20

    Appendix A Introduction to Co lor NI PXI/PCI-1411 User Manual A-2 ni.com The perception of a color depe nds on many factors, such as: • Hue , which is the perceiv ed dominant color . Hue depend s directly on the wav elen gth of a color . • Saturation , which is dependent on the amount of white light present in a color . Pastels typically ha ve [...]

  • Page 21

    Appendix A Introduction to Color © National Instruments Corporatio n A-3 NI PXI/PCI-1411 User Manual Hue, Saturation, Luminanc e, and Intensity Planes The 8-bit hue, saturation, lu minance, and intensity planes can also be returned individually if you want to analyze the image. Luminance, Intensity , Hue, or Sat uration are defined using the Red, [...]

  • Page 22

    © National Instruments Corporatio n B-1 NI PXI/PCI-1411 User Manual B T echnical Support and Professional Ser vices Visit the following sections of the National Instruments Web site at ni.com for technical support an d professional services: • Support —Online technical support resources at ni.com/support include the following: – Self-Help Re[...]

  • Page 23

    Appendix B T echnical Support and Professional Ser vices NI PXI/PCI-1411 User Manual B-2 ni.com • Calibration Certificate —If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration . If you searched ni.com and could not find the answers you need, contact your local off ice or NI corp[...]

  • Page 24

    © National Instruments Corporatio n G-1 NI PXI/PCI-1411 User Manual Glossar y Symbol Pref ix V alue pp i c o 1 0 –1 2 nn a n o 1 0 –9 μ micro 10 –6 m milli 10 –3 k kilo 10 3 Mm e g a 1 0 6 Gg i g a 1 0 9 Tt e r a 1 0 12 Symbols + Positiv e of, or plus. /P e r . Ω Ohm. ± Plus or minus. – Negati ve of, or minus. A A Amperes. A C Alterna[...]

  • Page 25

    Glossary NI PXI/PCI-1411 User Manual G-2 ni.com acti ve pixel region The region of pixels acti vely being stored. Defined by a pixel start (relativ e to the horizont al synchronization signal) an d a pixel count. address V alue that identifies a specif ic lo cati on (or series of locations) in memo ry . API Application programming interface. area A[...]

  • Page 26

    Glossary © National Instruments Corporatio n G-3 NI PXI/PCI-1411 User Manual composite video A type of colo r video transmission where synchronization, l uma, and chroma information are tran smitted on one analog signal. contrast A constant multiplication factor applied to th e luma and chroma components of a color pixel in the color decoding proc[...]

  • Page 27

    Glossary NI PXI/PCI-1411 User Manual G-4 ni.com E EEPR OM Electrically erasable programmabl e read-only memory . R OM that can be erased with an electrical signal and reprogrammed. external trigger A voltage pulse from an e xte rnal source that triggers an e vent such as A/D con version. F field For an interlaced video signal, a field is half the n[...]

  • Page 28

    Glossary © National Instruments Corporatio n G-5 NI PXI/PCI-1411 User Manual HSYNC Horizontal synchronization signal. The synchroni zation pulse signal produced at the beginning of each video scan lin e that keeps a video monitor’ s horizontal scan rate in st ep with the transmission of each new line. hue Represents the dominant color of a pixel[...]

  • Page 29

    Glossary NI PXI/PCI-1411 User Manual G-6 ni.com IRQ Interrupt request. See interru pt . K k Kilo. The standard metric pref ix for 1,000, or 10 3 , used with units of measure such as v olts, hertz, and meters. K Kilo. The prefix for 1,024, or 2 10 , used with B in quantifying data or computer memory . kbytes/s A unit for data transfer that means 1,0[...]

  • Page 30

    Glossary © National Instruments Corporatio n G-7 NI PXI/PCI-1411 User Manual memory windo w Continuous blocks of memory that can be accessed quickly by changing addresses on the local processor . MSB Most significant bit. MTBF Mean time between failure. mux Multiplexer . A switching device with multiple inputs that selectively connects one of its [...]

  • Page 31

    Glossary NI PXI/PCI-1411 User Manual G-8 ni.com pixel count The total number of pixels be tween two horizontal synchronization signals. The pixel count determines the frequency of the pixel clock. PLL Phase-locked loop. Circuitry that provides a v ery stable pixel clock that is referenced to another signal, for example, an incoming horizontal synch[...]

  • Page 32

    Glossary © National Instruments Corporatio n G-9 NI PXI/PCI-1411 User Manual S S-V ideo A type of color video transm ission where timing and lu ma information are transmitted on one analog signal and chrom a is transmitted on a separate analog signal. saturation The amoun t of white added t o a pure color . Satu ration relates to the richness of a[...]

  • Page 33

    Glossary NI PXI/PCI-1411 User M anual G-10 ni.com V VCO V oltage-controlled oscillator . An oscillator that changes frequency depending on a control signal; used in a PLL to generate a stable pixel clock. VI V irtual Instrument. (1) A combi nation of hardware and/or software elements, typically used with a PC, th at has the functionality of a class[...]

  • Page 34

    © National Instruments Corporatio n I-1 NI PXI/PCI -1411 User Manual Index A acquisition acquisition window control, 2-4 acquisition, scaling, an d R OI circuitry, 2-3 start conditions, 2-4 acquisition window, 2-4 application software V ision Builder AI, 1-3 V ision Dev elopment Module, 1-3 B block diagram of NI 1411, 2-1 board configuration NVRAM[...]

  • Page 35

    Index NI PXI/PCI-1411 User Manual I-2 ni.com start conditions, 2-4 trigger control and mapping circuitry, 2-3 video acquisition, 2-1 video decoder, 2-2 help, technical support, B-1 hue 32-bit HSL and HSI, A-3 definition, A-2 hue, satur ation, lumi nance, and int ensity planes, A-3 I I/O connector (figure), 3-1 image representations 32-bit HSL and H[...]

  • Page 36

    Index © National Instruments Corporatio n I-3 NI PXI/PCI -1411 User Manual configuring, 2-4 RGB image representation, A-2 S saturation 32-bit HSL and HSI, A-3 definition, A-2 hue, satur ation, lumi nance, and int ensity planes, A-3 scaling down circuitry, 2-5 scatter-gather DMA controllers, 2-3 SDRAM, 2-3 signal connections custom cables, 3-2 I/O [...]