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National Instruments NI PCI-1426 manual

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Table of contents for the manual

  • Page 1

    NI Vision NI PCI-1426 User Manual Base Configuration Camera Li nk Image Acquisition Device NI PCI-1426 User Manual February 2007 374040C-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 PCI-1426 is warranted against defects i n materials and workm anship for a period o f one year from the date of shipment, a s evidenced by receipts or other documentati on. National Instruments wil l, at its option, repair or replace equipment that proves to be defect ive during the warranty period. This warran[...]

  • 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 ve ntions are used in this manual: < > Angle brackets that cont ain numbers separated by an ellipsis represent a range of v alues associated with a bit or signal name—for example, AO < 3 . . 0 > . This icon denotes a n ote, which alerts you to import ant information . bold Bold text denotes items that yo[...]

  • Page 6

    © National Instruments Corpor ation vii NI PCI-1426 User Manual Contents Chapter 1 Introduction Software Overview ......... .............. ............... .............. .............. .............. .............. .......... 1-2 NI-IMAQ Driver Software .............. .............. ............... .............. .............. ....... 1-2 Nationa[...]

  • Page 7

    Contents NI PCI-1426 User Manual viii ni.com Appendix A Cabling Appendix B Technical Support and Professional Services Glossary Index[...]

  • Page 8

    © National Instruments Corpor ation 1-1 NI PCI-1426 User Manual 1 Introduction The NI 1426 is an interface device that supports a diverse range of Camera Link-compatible cameras. The NI 1426 acqu ires digital images in real time and stores the images in onboard fram e memory or transf ers them directly to system memory. Featuring a high-speed data[...]

  • Page 9

    Chapter 1 Introduction NI PCI-1426 User Manual 1-2 ni.com Software Over view Programming the NI 1426 requires the NI-IMAQ driver software for controlling the hardware . National Instruments also offe rs the following application software packages for an alyzing and processing your acq uired images. • Vision Builder for Automated Inspection —All[...]

  • Page 10

    Chapter 1 Introduction © National Instruments Corpor ation 1-3 NI PCI-1426 User Manual Vision Builder for Automated Inspection NI Vision Builder for Au tomated Inspection (A I) is configurable machine vision software that you can use to prototype, benchmark , and deploy applications. Vision Builder AI do es not require programming , but is scalabl[...]

  • Page 11

    Chapter 1 Introduction NI PCI-1426 User Manual 1-4 ni.com LabVIEW VI creation wizard, V ision Assistant can create LabVIEW VI diagrams that perform the prototyp e you created in V ision Assistant. Y ou can then use LabVIEW to add functionali ty to the generated VI. Integration with DAQ and Motion Platforms that support NI-IMAQ also support NI-DAQ a[...]

  • Page 12

    © National Instruments Corpor ation 2-1 NI PCI-1426 User Manual 2 Hardware Over view This chapter provides an overview of NI 1 426 hardware func tionality and explains the operations of the NI 1426 functional unit s. Functional Over view The NI 1426 features a flexible, high-speed data path optimized for receiving and formatting video da ta from C[...]

  • Page 13

    Chapter 2 Hardware Overview NI PCI-1426 User Manual 2-2 ni.com Camera Link and the NI 1426 The NI 1426 supports the Camera Link Base configuration. Base Configuration The Camera Link Base co nfiguration places 24 data bits and four enable signals (Frame Valid, Line Valid, Data Valid, and a spare) on a single Channel Link part and cable. The Base co[...]

  • Page 14

    Chapter 2 Hardware Overview © National Instruments Corpor ation 2-3 NI PCI-1426 User Manual Hardware Binarization The NI 1426 supports binarization and inverse binarization. Binarization and inverse binarization segment an image int o two regions: a particle region and a background region. Use binarization an d inverse binarizat ion to isolate obj[...]

  • Page 15

    Chapter 2 Hardware Overview NI PCI-1426 User Manual 2-4 ni.com Multiple-T ap Data Formatter Many digital cameras transfer multip l e taps, or channels, of data simultaneously to increase the frame rate of the camera. However, the data in each tap may not be transferred in the traditional top-left to bottom-right direction. Also, the taps may not tr[...]

  • Page 16

    Chapter 2 Hardware Overview © National Instruments Corpor ation 2-5 NI PCI-1426 User Manual Note If not configured as single-ended I/O lines, triggers have input only capability . Wiring an Isolated Input to Output Devices You can wire an isolated in put to both sourci ng and sinking o utput devices. Refer to Figures 2-3 and 2-4 for wiring example[...]

  • Page 17

    Chapter 2 Hardware Overview NI PCI-1426 User Manual 2-6 ni.com Figure 2-4. Example of Connecting an Isolated Input to a Sinking Output Device Connecting to a Qu adrature Encoder The NI 1426 accepts differential (RS-42 2) line driver inputs. Shielded encoder cables are recommended for al l applications. Unshielded cables are more susceptible to nois[...]

  • Page 18

    Chapter 2 Hardware Overview © National Instruments Corpor ation 2-7 NI PCI-1426 User Manual High-Speed Timing Built from high-speed counters, the high-sp eed timing circuit ry on the NI 1426 can generate precise real-time control signals for your camera. Map the output of this circuitry to a trigger line to provide accurate pulses and pulse trains[...]

  • Page 19

    Chapter 2 Hardware Overview NI PCI-1426 User Manual 2-8 ni.com Scatter -Gather DM A Controllers The NI 1426 uses three independent onboard direct memory access (DMA) controllers. The DMA controllers tr ansfer data between the onboard SDRAM memory buff ers and the P CI bus. Each of these controllers supports scatter-gather DMA, which allows the DMA [...]

  • Page 20

    Chapter 2 Hardware Overview © National Instruments Corpor ation 2-9 NI PCI-1426 User Manual Serial Interface The NI 1426 provides serial connectio ns to and from the camera through two LVDS pair s in the Camera L ink cable. All Camer a Link serial communication uses one start b it, one stop bit, no parity, and no hardware handshaking. The NI 1426 [...]

  • Page 21

    © National Instruments Corpor ation 3-1 NI PCI-1426 User Manual 3 Signal Connections Figure 3-1 shows the connectors on the front panel of the NI 1426. Figure 3-1. NI 1426 Connectors 1 MDR 26-Pin Connector 2 15-Pin D-SUB Connector TRIGGERS CAMERA LINK 2 1[...]

  • Page 22

    Chapter 3 Signal Connections NI PCI-1426 User Manual 3-2 ni.com Connectors This section describes the MDR 26-pin connect or and the 15-pin D-SUB connector on the NI 14 26. MDR 26-Pin Connector The MDR 26-pin connector provides reli able high-frequency transfer rates between the camera and the acquisition device. To access this connector, use a 3M C[...]

  • Page 23

    Chapter 3 Signal Connections © National Instruments Corpor ation 3-3 NI PCI-1426 User Manual 15-pin D-SUB Connector The 15-pin D-SUB connecto r connects to general purpose dig ital I/O. The general purpose digital I/O available on this connector in cludes four TTL I/O lines, two optically isolated input lin es, and two RS-422 input lines. National[...]

  • Page 24

    Chapter 3 Signal Connections NI PCI-1426 User Manual 3-4 ni.com Connector Signal Conn ection Descriptions Table 3-1 describes the MDR 26-pin and 15-pi n D-SUB signal connections. Table 3-1. I/O Connector Signals Signal Name Description TTL_TRIG<3..0 > TTL external triggers/DIO lines (I/O). DGND Direct connection to di gital GND on the NI 1426[...]

  • Page 25

    © National Instruments Corpor ation A-1 NI PCI-1426 User Manual A Cabling This appendix contains cabling requirements for the NI 1426, including Camera Link cable ordering information. 15-Pin D-SUB Cable Specifications National Instruments provides a generic 15-pin cab le assembly kit (part number 190912-04) th at breaks the connector out into 15 [...]

  • Page 26

    Appendix A Cabling NI PCI-1426 User Manual A-2 ni.com Figure A-1 illustrates the Camer a Link cable. Figure A-1. Camera Link Cable Ordering Information Camera Link cables are manuf actured by 3M corporation and are av ailable from both National Instruments and 3M. T wo-meter Camera Link cables (par t number 187676-02) are av ailable from the Nation[...]

  • Page 27

    © National Instruments Corpor ation B-1 NI PCI-1426 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 Resour[...]

  • Page 28

    Appendix B T echnica l Support and Professional Services NI PCI-1426 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 corporat[...]

  • Page 29

    © National Instruments Corpor ation G-1 NI PCI-1426 User Manual Glossar y A ac q u is i t io n wi n d o w The image size specif ic to a video standard or camera resolution. ac t i ve li n e re g io n The region of lines acti vely be ing stored. Def ined b y a line start (relati ve to the vertical synchronization signal) and a line count. ac t i ve[...]

  • Page 30

    Glossary NI PCI-1426 User Manual G-2 ni.com D DA Q Data acquisition. (1) Collecting an d measuring electri cal signals from sensors, transducers, and test probes or fixtures and inputting them to a computer for processing. (2) Collecting and measuring the same kinds of electrical signals with A/D or DIO boards plugged into a computer, and possibly [...]

  • Page 31

    Glossary © National Instruments Corpor ation G-3 NI PCI-1426 User Manual Q quadrature encoder A device that con verts angular rotation into two pulse trains, A and B. The phase difference between A and B transmits information about the direction of rotation and the n umber of transitions indicates the amount of rotation. R re a l ti m e A property[...]

  • Page 32

    Glossary NI PCI-1426 User Manual G-4 ni.com T ta p A stream of pixels from a camera. Some cameras send multiple streams, or taps, of data over a cable simultan eously to increase transfer rate. tr a n sf e r r a t e The rate, measured in bytes/s, at which data is mov ed from source to destination after software initialization and set up op erations[...]

  • Page 33

    © National Instruments Corpor ation I-1 NI PCI-1426 User Manual Index Numerics 15-pin D-SUB connector, 3-3 cable specifications, A-1 overview, 3-3 pin assignments (figure), 3 -3 A acquisition and region of interest (ROI) circuitry, 2-7 acquisition start con ditions, 2-8 acquisition window cont rol active pixel region (acquisition window), 2-7 regi[...]

  • Page 34

    Index NI PCI-1426 User Manual I-2 ni.com bus master PCI interface, 2-8 Camera Link, Base configuration, 2-2 data transmission, 2-2 high-speed t iming, 2-7 multiple-tap data form atter, 2-4 scatter-gather DMA controllers, 2-8 SDRAM, 2-4 serial interface, 2-9 start conditions, 2-8 trigger control and mapping circuitry, 2-4 wiring an isolat ed input t[...]

  • Page 35

    Index © National Instruments Corpor ation I-3 NI PCI-1426 User Manual S scatter-gather DMA controllers, 2-8 SDRAM, 2-4 serial interface, 2-9 SerTC± signal (table), 3-4 SerTFG± signal (t able), 3-4 signal connections connectors 15-pin D-SUB connector, 3-3 MDR 26-pin connector, 3-2 NI 1426 connectors (figure), 3-1 signal descri ptions, 3-4 softwar[...]