Manuale d’uso / di manutenzione del prodotto NI PCI-1426 del fabbricante National Instruments
Vai alla pagina of 35
NI Vision NI PCI-1426 User Manual Base Configuration Camera Li nk Image Acquisition Device NI PCI-1426 User Manual February 2007 374040C-01.
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 O.
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.
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.
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 .
© National Instruments Corpor ation vii NI PCI-1426 User Manual Contents Chapter 1 Introduction Software Overview ......... .............. ............... .............. .............. .............. .............. .......... 1-2 NI-IMAQ Driver Software .
Contents NI PCI-1426 User Manual viii ni.com Appendix A Cabling Appendix B Technical Support and Professional Services Glossary Index.
© 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.
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.
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.
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.
© 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.
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.
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.
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.
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.
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.
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.
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.
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.
© 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.
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.
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.
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..
© 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.
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.
© 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.
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.
© 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.
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.
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.
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.
© 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 reg.
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-gat.
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 .
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il National Instruments NI PCI-1426 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del National Instruments NI PCI-1426 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso National Instruments NI PCI-1426 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul National Instruments NI PCI-1426 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il National Instruments NI PCI-1426, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del National Instruments NI PCI-1426.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il National Instruments NI PCI-1426. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo National Instruments NI PCI-1426 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
