NI PCI-1426 User Manual
Contents
1. The rate measured in bytes s at which data is moved from source to destination after software initialization and set up operations The maximum rate at which the hardware can operate Any event that causes or starts some form of data capture Circuitry that routes monitors and drives external and RTSI bus trigger lines You can configure each of these lines to start or stop acquisition on a rising or falling edge Transistor transistor logic Virtual Instrument 1 A combination of hardware and or software elements typically used with a PC that has the functionality of a classic stand alone instrument 2 A LabVIEW software module VI which consists of a front panel user interface and a block diagram program G 4 ni com 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 ROT circuitry 2 7 acquisition start conditions 2 8 acquisition window control active pixel region acquisition window 2 7 region of interest 2 7 Base configuration Camera Link 2 2 block diagram of NI 1426 figure 2 1 bus master PCI interface 2 8 C cabling 15 pin D SUB connector A 1 Camera Link cable figure A 2 Camera Link cables A 1 calibration certificate NI resources B 2 Camera Link Base configuration 2 2 cabling description A 1 ordering information A 2 overview 1 4 CC lt 4 1 gt signal table 3 4 clo2. DOC of Industry Canada regulates wireless interference in much the same way Digital electronics emit weak signals during normal operation that can affect radio television or other wireless products All Class A products display a simple warning statement of one paragraph in length regarding interference and undesired operation The FCC rules have restrictions regarding the locations where FCC Class A products can be operated Consult the FCC Web site at www fcc gov for more information FCC DOC Warnings This equipment generates and uses radio frequency energy and if not installed and used in strict accordance with the instructions in this manual and the CE marking Declaration of Conformity may cause interference to radio and television reception Classification requirements are the same for the Federal Communications Commission FCC and the Canadian Department of Communications DOC Changes or modifications not expressly approved by NI could void the user s authority to operate the equipment under the FCC Rules Class A Federal Communications Commission This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and
3. THE RISK OF SYSTEM FAILURE TO AVOID DAMAGE INJURY OR DEATH THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT AGAINST SYSTEM FAILURES INCLUDING BUT NOT LIMITED TO BACK UP OR SHUT DOWN MECHANISMS BECAUSE EACH END USER SYSTEM IS CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS THE USER OR APPLICATION DESIGNER IS ULTIMATELY RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION INCLUDING WITHOUT LIMITATION THE APPROPRIATE DESIGN PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION Compliance Compliance with FCC Canada Radio Frequency Interference Regulations Determining FCC Class The Federal Communications Commission FCC has rules to protect wireless communications from interference The FCC places digital electronics into two classes These classes are known as Class A for use in industrial commercial locations only or Class B for use in residential or commercial locations All National Instruments NI products are FCC Class A products Depending on where it is operated this Class A product could be subject to restrictions in the FCC rules In Canada the Department of Communications
4. electrical signals with A D or DIO boards plugged into a computer and possibly generating control signals with D A and or DIO boards in the same computer Direct memory access A method by which data can be transferred to and from computer memory from and to a device or memory on the bus while the processor does something else DMA is the fastest method of transferring data to from computer memory First in first out memory buffer The first data stored is the first data sent to the acceptor FIFOs are used on Vision devices to temporarily store incoming data until that data can be retrieved Low Voltage Differential Signaling EIA 644 Driver software for National Instruments Vision hardware Peripheral Component Interconnect A high performance expansion bus architecture originally developed by Intel to replace ISA and EISA PCI offers a theoretical maximum transfer rate of 133 Mbytes s Picture element The smallest division that makes up the video scan line for display on a computer monitor a pixel s optimum dimension is square aspect ratio of 1 1 or the width equal to the height Divides the incoming horizontal video line into pixels G 2 ni com Q quadrature encoder R real time resolution RGB ROI RTSI bus S scatter gather DMA SDRAM Glossary A device that converts angular rotation into two pulse trains A and B The phase difference between A and B transmits information about the directi
5. feedback 2004 2007 National Instruments Corporation All rights reserved Important Information Warranty The NI PCI 1426 is warranted against defects in materials and workmanship for a period of one year from the date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace equipment that proves to be defective during the warranty period This warranty includes parts and labor The media on which you receive National Instruments software are warranted not to fail to execute programming instructions due to defects in materials and workmanship for a period of 90 days from date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period National Instruments does not warrant that the operation of the software shall be uninterrupted or error free A Return Material Authorization RMA number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty National Instruments believes that the information in this document is accurate The document has been carefully reviewed for technical accura
6. ships with the NI 1426 NI IMAQ has an extensive library of functions such as routines for video configuration continuous and single shot image acquisition memory buffer allocation trigger control and device configuration you can call from the application development environment ADE NI IMAQ handles many of the complex issues between the computer and the image acquisition device such as programming interrupts and camera control NI IMAQ performs all functions required for acquiring and saving images but does not perform image analysis Refer to the National Instruments Application Software section for image analysis functionality NI IMAQ is also the interface between the NI 1426 and LabVIEW LabWindows CVI or a text based programming environment The NI IMAQ software kit includes a series of libraries for image acquisition for LabVIEW LabWindows CVI and Measurement Studio which contains libraries for Microsoft Visual Basic NI IMAQ features both high level and low level functions Examples of high level functions include the sequences to acquire images in multi buffer single shot or continuous mode An example of a low level function is configuring an image sequence since it requires advanced understanding of the Vision device and image acquisition National Instruments Application Software This section describes the National Instruments application software packages you can use to analyze and process the images you acq
7. used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user is required to correct the interference at their own expense Canadian Department of Communications This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada Compliance with EU Directives Users in the European Union EU should refer to the Declaration of Conformity DoC for information pertaining to the CE marking Refer to the Declaration of Conformity DoC for this product for any additional regulatory compliance information To obtain the DoC for this product visit ni com certification search by model number or product line and click the appropriate link in the Certification column The CE marking Declaration of Conformity contains important supplementary information and instructions for the user or installer Conventions lt gt 3 bold italic monospace NI 1426 The following conventions are used in this manual Angle brackets that contain numbers separated by an ellipsis represent a range of values associated with a bit or signal name for example AO lt 3 0 gt This icon denotes a note which alerts you to important
8. NI Vision NI PCI 1426 User Manual Base Contiguration Camera Link Image Acquisition Device February 2007 lt 7 NATIONAL 374040C 01 INSTRUMENTS Worldwide Technical Support and Product Information ni com National Instruments Corporate Headquarters 11500 North Mopac Expressway Austin 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 Czech Republic 420 224 235 774 Denmark 45 45 76 26 00 Finland 385 0 9 725 72511 France 33 0 1 48 14 24 24 Germany 49 89 7413130 India 91 80 41190000 Israel 972 3 6393737 Italy 39 02 413091 Japan 81 3 5472 2970 Korea 82 02 3451 3400 Lebanon 961 0 1 33 28 28 Malaysia 1800 887710 Mexico 01 800 010 0793 Netherlands 31 0 348 433 466 New Zealand 0800 553 322 Norway 47 0 66 90 76 60 Poland 48 22 3390150 Portugal 351 210 311 210 Russia 7 495 783 6851 Singapore 1800 226 5886 Slovenia 386 3 425 42 00 South Africa 27 0 11 805 8197 Spain 34 91 640 0085 Sweden 46 0 8 587 895 00 Switzerland 41 56 2005151 Taiwan 886 02 2377 2222 Thailand 662 278 6777 Turkey 90 212 279 3031 United Kingdom 44 0 1635 523545 For further support information refer to the Technical Support and Professional Services appendix To comment on National Instruments documentation refer to the National Instruments Web site at ni com info and enter the info code
9. ains the operations of the NI 1426 functional units Functional Overview The NI 1426 features a flexible high speed data path optimized for receiving and formatting video data from Camera Link cameras Figure 2 1 illustrates the key functional components of the NI 1426 Synchronous Dynamic RAM Data Data Y SDRAM EFA Interface 5 Enables Channel PCI Interface 5 a Link Pixel Clock and Camera Enables and a S Receiver a Scatter Gather re O Pixel DMA Controllers a Clock o x ey lt gt cc camera O ontrol Advanced Acquisition lt Timing i ROI and Triggering Serial Control Differential Converter lt _ UART m a External Triggers RTSI Bus c te Figure 2 1 NI 1426 Block Diagram National Instruments Corporation 2 1 NI PCI 1426 User Manual Chapter 2 Hardware Overview Camera Link and the NI 1426 The NI 1426 supports the Camera Link Base configuration Base Configuration The Camera Link Base configuration 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 configuration includes asynchronous serial transmission as well as four digital camera control lines for controlling exposure time frame rates and other camera control signals These four control lines ar
10. air wiring you must build a custom cable Refer to the connector pin assignments in Figure 3 3 and the 5 Pin D SUB Cable Specifications section of Appendix A Cabling to build a custom cable for the 15 pin D SUB connector TTL_TRIG O 1 F5 TTL_TRIG 1 2 Hg a TTL_TRIG 2 3 5 cae TTL_TRIG 3 4 ISO_IN o 5 122 SO IN ISO_IN 0 6 134 SO NO PHASE_A 7 14 PHASE_B PHASE A Hg 5 PHASE_B Le Figure 3 3 15 Pin D SUB Connector Pin Assignments National Instruments Corporation 3 3 NI PCI 1426 User Manual Chapter 3 Signal Connections Connector Signal Connection Descriptions Table 3 1 describes the MDR 26 pin and 15 pin D SUB signal connections Table 3 1 1 0 Connector Signals Signal Name Description TTL_TRIG lt 3 0 gt TTL external triggers DIO lines I O DGND Direct connection to digital GND on the NI 1426 ISO_IN lt 1 0 gt 30 V isolated input only lines Use these lines instead of not in addition to TTL_TRIG lt 1 0 gt PHASE_A The primary use of these signals is for interfacing to a quadrature encoder PHASE_B Alternatively these pairs can be used as independent RS 422 trigger inputs instead of not in addition to TTL_TRIG lt 3 2 gt X lt 3 0 gt LVDS Base configuration data and enable signals from the camera to the acquisition device XCLK Tr
11. ansmission clock on the Base configuration chip for Camera Link communication between the acquisition device and the camera SerTC Serial transmission to the camera from the image acquisition device SerTFG Serial transmission to the frame grabber from the camera CC lt 4 1 gt Four LVDS pairs defined as camera inputs and acquisition device outputs reserved for camera control On some cameras the camera controls allow the acquisition device to control exposure time and frame rate NI PCI 1426 User Manual 3 4 ni com 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 cable assembly kit part number 190912 04 that breaks the connector out into 15 color coded wires for easy connectivity Visit the National Instruments Web site at ni com catalog to purchase a cable assembly kit for the NI 1426 If you decide to build a custom cable National Instruments recommends that you use twisted pair wiring to help reduce noise pickup from outside sources and crosstalk TTL I O lines should be twisted together with a wire connected to DGND Isolated input and RS 422 input lines should be twisted together in their proper pairs Refer to the Connectors section of Chapter 3 Signal Connections for connector pin assignments Camera Link Cables Use a standard Ca
12. art conditions 2 8 software programming choices 1 2 integration with DAQ 1 4 NI Vision Builder for Automated Inspection 1 3 NI Vision Development Module 1 3 NI IMAQ driver software 1 2 start conditions delayed acquisition 2 8 software control 2 8 trigger control 2 8 support technical B 1 National Instruments Corporation Index T technical support B 1 timing circuitry high speed 2 7 training and certification NI resources B 1 trigger configuration options table 2 5 control and mapping circuitry 2 4 controlled start conditions 2 8 troubleshooting NI resources B 1 TTL_TRIG signal table 3 4 W Web resources B 1 X X lt 3 0 gt signal table 3 4 XCLKz signal table 3 4 NI PCI 1426 User Manual
13. ck signals XCLK signal table 3 4 National Instruments Corporation configuration Camera Link Base configuration 2 2 connectors 15 pin D SUB connector 3 3 T O connector signals table 3 4 MDR 26 pin connector figure 3 2 NI 1426 connectors figure 3 1 signal description table 2 5 3 4 conventions used in manual v D data formatter multiple tap 2 3 2 4 data transmission 2 2 Declaration of Conformity NI resources B 1 delayed acquisition start conditions 2 8 DGND signal table 3 4 diagnostic tools NI resources B 1 DMA controllers 2 8 documentation conventions used in the manual v NI resources B 1 drivers NI resources B 1 D SUB connector 15 pin 3 3 cable specifications A 1 overview 3 3 pin assignments figure 3 3 E examples NI resources B 1 H hardware overview 2 1 acquisition region of interest ROI 2 7 binarization 2 3 block diagram figure 2 1 NI PCI 1426 User Manual Index bus master PCI interface 2 8 Camera Link Base configuration 2 2 data transmission 2 2 high speed timing 2 7 multiple tap data formatter 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 isolated input to a sourcing sinking output device 2 5 wiring an isolated input to output devices 2 5 help technical support B 1 high speed timing circuitry 2 5 2 7 I O connector See connect
14. cy In the event that technical or typographical errors exist National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition The reader should consult National Instruments if errors are suspected In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it EXCEPT AS SPECIFIED HEREIN NATIONAL INSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE CUSTOMER S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of the liability of National Instruments will apply regardless of the form of action whether in contract or tort including negligence Any action against National Instruments must be brought within one year after the cause of action accrues National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service failures caused by owner s failure to follow the Nat
15. e To access this connector use a 3M Camera Link cable Refer to the Camera Link Cables section of Appendix A Cabling for additional information about Camera Link cables including available cable lengths and ordering information Figure 3 2 shows the NI 1426 MDR 26 pin connector assignments Refer to Table 3 1 for a description of the MDR 26 pin and 15 pin D SUB signal connections ass DGND 14 1 DGND CC 4 15 2 CC 4 cc 3 16 3 cc 3 cc 2 17 4 cc2 CC 1 18 5 CC 1 SerTFG 19 6 SerTFG SerTC 20 7 SerTC x 3 21 8 x 3 XCLK 22 9 XCLK x 2 23 10 x 2 x 1 24 41 x 1 x 0 25 12 x o DGND 26 13 DGND SS Figure 3 2 MDR 26 Pin Connector Assignments 3 2 ni com Chapter 3 Signal Connections 15 pin D SUB Connector The 15 pin D SUB connector connects to general purpose digital I O The general purpose digital I O available on this connector includes four TTL I O lines two optically isolated input lines and two RS 422 input lines National Instruments provides a generic 15 pin cable assembly kit part number 190912 04 that breaks the connector out into 15 color coded wires for easy connectivity Refer to the 5 Pin D SUB Cable Specifications section of Appendix A Cabling for information about ordering a cable assembly kit If you require twisted p
16. e configured in the camera file to generate precise timing signals for controlling digital camera acquisition Base configuration includes the following bit allocations e 8 bit x 1 2 and 3 taps channels e 10 bit x 1 and 2 taps e 12 bit x 1 and 2 taps e 14 bit x 1 tap e 16 bit x 1 tap e 24 bit RGB Data Transmission A 28 to 4 serializing Channel Link chip drives the data and camera enable signals across the Camera Link cable and the camera s pixel clock controls the Channel Link s data transmission The four LVDS pairs are then deserialized by another Channel Link chip on the NI 1426 ay Note Exact timing of camera and image acquisition device communication is camera dependent Refer to the Specifications of the Camera Link Interface Standard for Digital Cameras and Frame Grabbers manual for more information about Camera Link timing requirements NI PCI 1426 User Manual 2 2 ni com Chapter 2 Hardware Overview Hardware Binarization The NI 1426 supports binarization and inverse binarization Binarization and inverse binarization segment an image into two regions a particle region and a background region Use binarization and inverse binarization to isolate objects of interest in an image To separate objects under consideration from the background select a pixel value range This pixel value range is known as the gray level interval or the threshold interval Binarization works by setting all image pixels that fal
17. e For your convenience data reformatting instructions for these cameras have been preprogrammed into the camera files SDRAM Depending on the memory option purchased the NI 1426 has 16 MB or 32 MB of onboard high speed synchronous dynamic RAM SDRAM The NI 1426 uses the onboard RAM as a FIFO buffer to ensure a complete acquisition Even when the data rate from the camera exceeds PCI throughput you can acquire without interruption until the onboard RAM is full Trigger Control and Mapping Circuitry NI PCI 1426 User Manual The trigger control and mapping circuitry routes monitors and drives the external and RTSI bus trigger lines You can configure each line to start an acquisition on a rising or falling edge and drive each line asserted or unasserted much like a digital I O line You also can map pulses from the high speed timing circuitry or many of the NI 1426 status signals to these trigger lines Four RTSI bus triggers and four external triggers all of which are programmable for polarity and direction are available for simultaneous use Individually configure the four external triggers in Measurement and Automation Explorer MAX the National Instruments Configuration utility as single ended I O lines or alternatively as isolated or RS 422 input only lines You can configure the four external triggers in any combination of single ended I O or input only lines Table 2 1 lists the configuration options available for each tr
18. eing stored Defined by a line start relative to the vertical synchronization signal and a line count active pixel region The region of pixels actively being stored Defined by a pixel start relative to the horizontal synchronization signal and a pixel count API Application programming interface area A rectangular portion of an acquisition window or frame that is controlled and defined by software ASIC Application Specific Integrated Circuit A proprietary semiconductor component designed and manufactured to perform a set of specific functions for specific customer needs buffer Temporary storage for acquired data bus A group of conductors that interconnect individual circuitry in a computer such as the PCI bus typically the expansion vehicle to which I O or other devices are connected C Camera Link Interface standard for digital video data and camera control based on the Channel Link chipset Channel Link National Semiconductor chipset for high speed data serialization and deserialization for transmission across cables up to 10 m National Instruments Corporation G 1 NI PCI 1426 User Manual Glossary DAQ DMA FIFO LVDS NLIMAQ P PCI pixel pixel clock NI PCI 1426 User Manual Data acquisition 1 Collecting and measuring electrical 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
19. ensor i Power i Ne Current Limiter NPN Sinking Output Device N Sensor LE Ni 1426 Common Figure 2 4 Example of Connecting an Isolated Input to a Sinking Output Device Connecting to a Quadrature Encoder The NI 1426 accepts differential RS 422 line driver inputs Shielded encoder cables are recommended for all applications Unshielded cables are more susceptible to noise and can corrupt the encoder signals Refer to Figure 2 5 for an example of connecting differential line drivers Encoder NI 1426 Phase A 7 T alltel i Twisted i i i Pair i i 120 Q Phase A Phase A l Phase B Phase B i gt 7 1 Ladue Twisted i 31 20 Pair a 5 r gt x 7 q Phase B 1 Phase B 26LS32 26LS32 NI PCI 1426 User Manual Figure 2 5 Example of Connecting Differential Line Drivers ni com Chapter 2 Hardware Overview High Speed Timing Built from high speed counters the high speed timing circuitry 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 Map these control signals to the camera control lines to control exposure time and frame rate 3 Note For your convenience the external control for cameras that support the NI 1426 has been preprogrammed into the camera file You can use MAX to specify the freq
20. ent markers on semiconductor wafers guiding robotic arms inspecting the quality of manufactured parts and locating cells Overview NI PCI 1426 User Manual This section provides a brief overview of the Camera Link standard Refer to the Specifications of the Camera Link Interface Standard for Digital Cameras and Frame Grabbers manual for more detailed information about Camera Link specifications This manual is available on several Web sites including the Automated Imaging Association site at www machinevisiononline org Developed by a consortium of camera and image acquisition device manufacturers Camera Link is a standard for interfacing digital cameras with image acquisition devices Camera Link simplifies connectivity between the image acquisition device and the camera by defining a single standard connector for both This standard ensures physical compatibility of devices bearing the Camera Link logo The basis for the Camera Link standard is the National Semiconductor Channel Link chipset a data transmission method consisting of a general purpose transmitter receiver pair The Channel Link driver takes 28 bits of parallel digital data and a clock and serializes the stream to four LVDS EIA 644 data streams and an LVDS clock providing high speed data transmission across 10 wires and over distances of up to 10 m 1 4 ni com Hardware Overview This chapter provides an overview of NI 1426 hardware functionality and expl
21. ides access to two optically isolated inputs and two RS 422 inputs These inputs can be individually selected in software For more advanced digital or analog system triggering or digital I O lines you can use the NI 1426 and NI IMAQ with the National Instruments data acquisition DAQ or motion control product lines Synchronizing several functions to a common trigger or timing event can be a challenge with image acquisition devices The NI 1426 uses the Real Time System Integration RTSI bus to solve this problem The RTSI bus uses the National Instruments RTSI bus interface and ribbon cable to route additional timing and trigger signals between the NI 1426 and up to four National Instruments DAQ Motion Control or image acquisition devices For detailed specifications of the NI 1426 refer to the Specifications section of Getting Started with the NI PCI 1426 National Instruments Corporation 1 1 NI PCI 1426 User Manual Chapter 1 Introduction Software Overview Programming the NI 1426 requires the NI IMAQ driver software for controlling the hardware National Instruments also offers the following application software packages for analyzing and processing your acquired images e Vision Builder for Automated Inspection Allows you to configure solutions to common inspection tasks e Vision Development Module Provides customized control over hardware and algorithms NI IMAQ Driver Software The NI IMAQ driver software
22. iers asrda raa aae ia eotea i eiere 2 1 Camera Link and the NI 1426 i nanimnren innn a 2 2 Base Configuration sosisini ia aa 2 2 Data Transmission seesi A Gap E E A deed sven cteerevoass 2 2 Hardware Binarization eeeeescesccessccescecenecesceceneessceeaeessaeceeeesaeceeeeseeeeaee 2 3 Multiple Tap Data Formatter 20 0 0 cecceecesseceseceseeceeeeeeeeseeeeeeeeeeeaeceseeeeaeeeaee 2 4 SDRAM feriics docetosiaes staatelsiasestes e O caste iene ea sous See ee anata hats 2 4 Trigger Control and Mapping Circuitry 0 ee ceeesecseceeeeseeneeeseseeeeseenees 2 4 Wiring an Isolated Input to Output Devices eee eee eeeeeeeeeeseteeeeaees 2 5 Connecting to a Quadrature Encoder cece eeeceeeseeeseeeeeneeeeeeaereeeeaees 2 6 High Speed Timing a scsecssekceetssscsscuecteassacess ccanausdecsadssetess sadenieupeanaciviiecassasaes 2 7 Acquisition and Region of Interest ROT 000 cece eseeeeeeneeeseeeeneeeseesees 2 7 Scatter Gather DMA Controllers 0 eceeceeseceseceeeeceseeeeeecsaeeeeeceneceaeeeseeeenees 2 8 Bus Master PCI Interface vescccdecstsescoenesevivascteenies sseveasedeasevvesveaosuasastenseaesnes 2 8 Start Conditions siitoin ees atest eee eat donee Tiere hae ev dees Settee 2 8 Serial Interacey ics eaa cana cave Paaeih teh E nea ee 2 9 Chapter 3 Signal Connections COMMECLOLS EEE eS AES ses GER ee es Th S 3 2 MDR 26 Pin Comme tor seess eonan AEE EA 3 2 15 pin D SUB ConnectTo niana i a a 3 3 Connector Signal Connection Descripti
23. igger source 2 4 ni com Chapter 2 Hardware Overview Table 2 1 Trigger Configuration Options for the NI 1426 Single ended Alternative Trigger Number Input Output Input Only 0 TTL_TRIG O ISO_IN 0 1 TTL_TRIG 1 ISO_IN 2 TTL_TRIG 2 RS422_IN 0 3 TTL_TRIG 3 RS422_IN 1 3 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 input to both sourcing and sinking output devices Refer to Figures 2 3 and 2 4 for wiring examples by output type Refer to Getting Started with the NI PCI 1426 for information about switching thresholds and current requirements AN Caution Do not apply a voltage greater than 30 VDC to the isolated inputs Voltage greater than 30 VDC may damage the NI 1426 Note Isolated inputs are compatible with 5 V logic if the external circuit meets the voltage and current requirements listed in Getting Started with the NI PCI 1426 Sensor Power PNP Sourcing Output Device N Vcc IN Current i Limiter Sensor Ya S Common i A AyA IN f i r i en K Ni1426 Figure 2 3 Example of Connecting an Isolated Input to a Sourcing Output Device National Instruments Corporation 2 5 NI PCI 1426 User Manual Chapter 2 Hardware Overview S
24. information Bold text denotes items that you must select or click in the software such as menu items and dialog box options Bold text also denotes parameter names Italic text denotes variables emphasis a cross reference or an introduction to a key concept Italic text also denotes text that is a placeholder for a word or value that you must supply Text in this font denotes text or characters that you should enter from the keyboard sections of code programming examples and syntax examples This font is also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions operations variables filenames and extensions NI 1426 refers to the NI PCI 1426 image acquisition device Contents Chapter 1 Introduction Software OVervi eW ioa a ea a ta euedh vet estes Bang E eevee 1 2 NI IMAQ Driver SoftWare srecen siara Eka oaks 1 2 National Instruments Application Software ssessseesseesseeeresrsrreresrsrrsrsrrsreeree 1 2 Vision Builder for Automated Inspection ssseseeeeseesseeerrsrsrrsrserer 1 3 Vision Development Module eee eseeeeseceeeeseeneeeseseeeeseesees 1 3 Integration with DAQ and Motion cc eeceesceseeesneceseeeececeeeeeaeeeeeceaeeeneeesaee 1 4 Camera CIDR oi e a e eei E E ne ltbect nc tyne Relive ea adeheee dots 1 4 OV envied Wes tiie Aoi aati Wen aii aed ee a alte ies 1 4 Chapter 2 Hardware Overview Functional Overview sce os
25. ional Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failure or surges fire flood accident actions of third parties or other events outside reasonable control Copyright Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation National Instruments respects the intellectual property of others and we ask our users to do the same NI software is protected by copyright and other intellectual property laws Where NI software may be used to reproduce software or other materials belonging to others you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction Trademarks National Instruments NI ni com and LabVIEW are trademarks of National Instruments Corporation Refer to the Terms of Use section on ni com legal for more information about National Instruments trademarks Members of the National Instruments Alliance Partner Program are business entities independent from National Instruments and have no agency partnership or joint venture relationship with National Instruments Patents For pate
26. isition on a rising or falling edge You can use all four external triggers and up to four RTSI bus triggers simultaneously e Delayed acquisition Use either software or triggers to start acquisitions instantaneously or after skipping a specific number of frames You can use delayed acquisition for post trigger applications 2 8 ni com Chapter 2 Hardware Overview Serial Interface The NI 1426 provides serial connections to and from the camera through two LVDS pairs in the Camera Link cable All Camera Link serial communication uses one start bit one stop bit no parity and no hardware handshaking The NI 1426 supports the following baud rates 56000 38400 19200 9600 7200 4800 3600 2400 2000 1800 1200 600 and 300 bps You can use the serial interface interactively with MAX and clsercon exe or programmatically with LabVIEW and C Interactively e MAX Use MAX with a camera file containing preprogrammed commands When an acquisition is initiated the commands are sent to the camera e clsercon exe Use the National Instruments terminal emulator for Camera Link clsercon exe if a camera file with preprogrammed serial commands does not exist for your camera With clsercon exe you can still communicate serially with your camera Go to lt NI IMAQ gt bin to access clsercon exe Programmatically e LabVIEW Use the serial interface programmatically through calls to the NI IMAQ driver using the IMAQ Serial Wri
27. l within the threshold interval to the image white value and setting all other image pixels to 0 Pixels inside the threshold interval are considered part of the particle region Pixels outside the threshold interval are considered part of the background region Inverse binarization flips the assigned bit numbers of the particle region and the background region Thus all pixels that belong in the threshold interval or the particle region are set to 0 while all pixels outside the threshold interval or the background region are set to the image white value Figure 2 2 illustrates binarization and inverse binarization NORMAL INVERSE of o S aie ne ne a ee L 2 2 O n Sampled Data Sampled Data Figure 2 2 Binarization and Inverse Binarization National Instruments Corporation 2 3 NI PCI 1426 User Manual Chapter 2 Hardware Overview Multiple Tap Data Formatter Many digital cameras transfer multiple 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 transfer data in the same direction The multiple tap data formatting circuitry on the NI 1426 can reorder the data from up to three taps The data from each tap can be independently scanned either from left to right or right to left and top to bottom or bottom to top ay Not
28. mera Link cable to connect your camera to the MDR 26 pin connector on the NI 1426 Camera Link cables consist of two MDR 26 pin male plugs linked with a twin axial shielded cable and are available in two shell configurations 3 Note National Instruments recommends purchasing a Camera Link cable Building your own cable is not recommended due to the high speed signaling on the Camera Link interface Refer to the Specifications of the Camera Link Interface Standard for Digital Cameras and Frame Grabbers manual for more information about Camera Link cables National Instruments Corporation A 1 NI PCI 1426 User Manual Appendix A Cabling Ordering Information NI PCI 1426 User Manual Figure A 1 illustrates the Camera Link cable i an q E p 36 g 3 a 1 MDR 26 Pin Male Plug 2 2X Thumbscrews Figure A 1 Camera Link Cable Camera Link cables are manufactured by 3M corporation and are available from both National Instruments and 3M Two meter Camera Link cables part number 187676 02 are available from the National Instruments Web site at ni com catalog Camera Link cables are available in 1 to 10 m lengths from the 3M Web site at www 3m com Refer to Figure A 2 for 3M part number information 14X26 SZLB XXX 0LC Shell Retention Options Length B Thumbscrew shell ki
29. nds on courses at locations around the world System Integration If you have time constraints limited in house technical resources or other project challenges National Instruments Alliance Partner members can help To learn more call your local NI office or visit ni com alliance Declaration of Conformity DoC A DoC is our claim of compliance with the Council of the European Communities using the manufacturer s declaration of conformity This system affords the user protection for electronic compatibility EMC and product safety You can obtain the DoC for your product by visiting ni com certification B 1 NI PCI 1426 User Manual Appendix B Technical Support and Professional Services e 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 office or NI corporate headquarters Phone numbers for our worldwide offices are listed at the front of this manual You also can visit the Worldwide Offices section of ni com niglobal to access the branch office Web sites which provide up to date contact information support phone numbers email addresses and current events NI PCI 1426 User Manual B 2 ni com Glossary A acquisition window The image size specific to a video standard or camera resolution active line region The region of lines actively b
30. nts covering National Instruments products refer to the appropriate location Help Patents in your software the patents txt file on your CD or ni com patents WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS 1 NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT INJURY TO A HUMAN 2 IN ANY APPLICATION INCLUDING THE ABOVE RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE IMPAIRED BY ADVERSE FACTORS INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY COMPUTER HARDWARE MALFUNCTIONS COMPUTER OPERATING SYSTEM SOFTWARE FITNESS FITNESS OF COMPILERS AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION INSTALLATION ERRORS SOFTWARE AND HARDWARE COMPATIBILITY PROBLEMS MALFUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES TRANSIENT FAILURES OF ELECTRONIC SYSTEMS HARDWARE AND OR SOFTWARE UNANTICIPATED USES OR MISUSES OR ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER COLLECTIVELY TERMED SYSTEM FAILURES ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF HARM TO PROPERTY OR PERSONS INCLUDING THE RISK OF BODILY INJURY AND DEATH SHOULD NOT BE RELIANT SOLELY UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO
31. on of rotation and the number of transitions indicates the amount of rotation A property of an event or system in which data is processed as it is acquired instead of being accumulated and processed at a later time The smallest signal increment that can be detected by a measurement system Resolution can be expressed in bits in proportions or in percent of full scale For example a system has 12 bit resolution one part in 4 096 resolution and 0 0244 percent of full scale Color encoding scheme using red green and blue RGB color information where each pixel in the color image is encoded using 32 bits eight bits for red eight bits for green eight bits for blue and eight bits for the alpha value unused Region of interest A hardware programmable rectangular portion of the acquisition window Real Time System Integration Bus The National Instruments timing bus that connects image acquisition and DAQ devices directly by means of connectors on the devices for precise synchronization of functions A type of DMA that allows the DMA controller to reconfigure on the fly Synchronous dynamic RAM National Instruments Corporation G 3 NI PCI 1426 User Manual Glossary tap transfer rate trigger trigger control and mapping circuitry TTL V VI NI PCI 1426 User Manual A stream of pixels from a camera Some cameras send multiple streams or taps of data over a cable simultaneously to increase transfer rate
32. ons ssseesseereersrrsrsrrsresrsrrsrsrrsresree 3 4 National Instruments Corporation vij NI PCI 1426 User Manual Contents Appendix A Cabling Appendix B Technical Support and Professional Services Glossary Index NI PCI 1426 User Manual viji ni com Introduction The NI 1426 is an interface device that supports a diverse range of Camera Link compatible cameras The NI 1426 acquires digital images in real time and stores the images in onboard frame memory or transfers them directly to system memory Featuring a high speed data flow path the NI 1426 is ideal for both industrial and scientific environments The NI 1426 is easy to install and configure It ships with NI IMAQ the National Instruments complete Vision driver software you can use to directly control the NI 1426 and other National Instruments Vision hardware products With NI IMAQ you can quickly and easily start your applications without having to program the device at the register level The NI 1426 supports the Camera Link Base configuration The MDR 26 pin connector provides access to base configuration cameras For further configuration information refer to the Camera Link and the NI 1426 section of Chapter 2 Hardware Overview The 15 pin D SUB connector has four external TTL input output I O lines you can use as triggers or as high speed digital I O lines Should you choose not to use the TTL I O lines the 15 pin D SUB connector also prov
33. ors installation cabling 15 pin D SUB cable specifications A 1 Camera Link cables A 1 instrument drivers NI resources B 1 integration with DAQ and motion control 1 4 ISO_IN signal table 3 4 K KnowledgeBase B 1 L LabVIEW Vision Builder AI 1 3 M Mapping circuitry 2 4 MDR 26 pin connector 3 2 multiple tap data formatter 2 3 2 4 NI PCI 1426 User Manual l 2 National Instruments application software 1 2 support and services B 1 NI 1426 Camera Link 1 4 software programming choices 1 2 integration with DAQ 1 4 National Instruments application software 1 2 NI Vision Builder for Automated Inspection 1 3 NI Vision Development Module 1 3 NI IMAQ driver software 1 2 NI support and services B 1 NI Vision Assistant 1 3 NI IMAQ driver software 1 2 P PHASE_A signal table 3 4 PHASE_B signal table 3 4 programming examples NI resources B 1 Q quadrature encoder connecting to 2 6 signal descriptions 3 4 R Real Time System Integration RTSI bus 1 1 region of interest ROI circuitry 2 7 region of interest in acquisition window control 2 7 ni com S scatter gather DMA controllers 2 8 SDRAM 2 4 serial interface 2 9 SerTC signal table 3 4 SerTFG signal table 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 descriptions 3 4 software NI resources B 1 software controlled st
34. program the most basic or complicated image applications without knowledge of particular algorithm implementations As a part of the Vision Development Module NI Vision Assistant is an interactive prototyping tool for machine vision and scientific imaging developers With Vision Assistant you can prototype vision applications quickly and test how various image processing functions work Vision Assistant generates a Builder file which is a text description containing a recipe of the machine vision and image processing functions This Builder file provides a guide you can use for developing applications in any ADE such as LabWindows CVI or Visual Basic using the Vision Assistant machine vision and image processing libraries Using the National Instruments Corporation 1 3 NI PCI 1426 User Manual Chapter 1 Introduction LabVIEW VI creation wizard Vision Assistant can create LabVIEW VI diagrams that perform the prototype you created in Vision Assistant You can then use LabVIEW to add functionality to the generated VI Integration with DAQ and Motion Camera Link Platforms that support NI IMAQ also support NI DAQ and a variety of National Instruments DAQ devices This allows integration between image acquisition devices and National Instruments DAQ devices Use National Instruments high performance stepper and servo motion control products with pattern matching software in inspection and guidance applications such as locating alignm
35. t 100 1 meter T Thumbscrew overmold shell 200 2 meters 300 3 meters 450 4 5 meters 500 5 meters 700 7 meters A00 10 meters Figure A 2 3M Part Number Ordering Information A 2 ni com Technical Support and Professional Services Visit the following sections of the National Instruments Web site at ni com for technical support and professional services National Instruments Corporation Support Online technical support resources at ni com support include the following Self Help Resources For answers and solutions visit the award winning National Instruments Web site for software drivers and updates a searchable KnowledgeBase product manuals step by step troubleshooting wizards thousands of example programs tutorials application notes instrument drivers and so on Free Technical Support Al registered users receive free Basic Service which includes access to hundreds of Application Engineers worldwide in the NI Discussion Forums at ni com forums National Instruments Application Engineers make sure every question receives an answer For information about other technical support options in your area visit ni com services or contact your local office at ni com contact Training and Certification Visit ni com training for self paced training eLearning virtual classrooms interactive CDs and Certification program information You also can register for instructor led ha
36. te and IMAQ Serial Read VIs Go to lt LabVIEW gt vi lib vision driver imagql1 11b to access these files e C Use the serial interface programmatically through calls to the NI IMAQ driver using imgSessionSerialWrite and imgSessionSerialRead 3 Note IMAQ Serial Read IMAQ Serial Write clsercon exe imgSessionSerialRead and imgSessionSerialwrite are used for directly accessing the NI 1426 serial port and are not required for most users National Instruments also fully supports the recommended serial API described in the Specifications of the Camera Link Interface Standard for Digital Cameras and Frame Grabbers manual This manual is available on several websites including the Automated Image Association Web site at www machinevisiononline org National Instruments Corporation 2 9 NI PCI 1426 User Manual Signal Connections Figure 3 1 shows the connectors on the front panel of the NI 1426 CAMERA LINK TRIGGERS 1 MDR 26 Pin Connector 2 15 Pin D SUB Connector Figure 3 1 NI 1426 Connectors National Instruments Corporation 3 1 NI PCI 1426 User Manual Chapter 3 Signal Connections Connectors This section describes the MDR 26 pin connector and the 15 pin D SUB connector on the NI 1426 MDR 26 Pin Connector NI PCI 1426 User Manual The MDR 26 pin connector provides reliable high frequency transfer rates between the camera and the acquisition devic
37. terest Using the region of interest circuitry the device acquires only a selected subset of the acquisition window 3 Note You can use MAX to set the acquisition window on the NI 1426 National Instruments Corporation 2 7 NI PCI 1426 User Manual Chapter 2 Hardware Overview Scatter Gather DMA Controllers The NI 1426 uses three independent onboard direct memory access DMA controllers The DMA controllers transfer data between the onboard SDRAM memory buffers and the PCI bus Each of these controllers supports scatter gather DMA which allows the DMA controller to reconfigure on the fly The NI 1426 can perform continuous image transfers directly to either contiguous or fragmented memory buffers Bus Master PCI Interface Start Conditions NI PCI 1426 User Manual The NI 1426 implements the PCI interface with a National Instruments custom application specific integrated circuit ASIC the PCI miniMITE The PCI interface can transfer data at a theoretical maximum rate of 133 MB s in bus master mode The NI 1426 can start acquisitions in the following ways Software control The NI 1426 supports software control of a start acquisition You can configure the NI 1426 to capture a fixed number of frames This configuration is useful for capturing a single frame or a sequence of frames e Trigger control You can start an acquisition by enabling external or RTSI bus trigger lines Each of these inputs can start a video acqu
38. uency and duration of these signals in easy to use units The NI 1426 also allows you to route the external trigger inputs 0 3 onto the camera control lines 1 4 Use MAX to select the source for the camera control lines You have the option to choose either the default control signal that is specified in the camera file or the external trigger input as the source for the camera control lines Acquisition and Region of Interest ROI The acquisition and ROI circuitry monitors incoming video signals and routes the active pixels to the multiple tap data formatter and SDRAM The NI 1426 can perform ROI acquisitions on all video lines and frames In an ROI acquisition select an area within the acquisition window to transfer across the PCI bus to system memory Configure the following parameters on the NI 1426 to control the video acquisition window e Acquisition window The NI 1426 allows the user to specify a particular region of active pixels and active lines within the incoming video data The active pixel region selects the starting pixel and number of pixels to be acquired relative to the assertion edge of the horizontal or line enable signal from the camera The active line region selects the starting line and number of lines to be acquired relative to the assertion edge of the vertical or frame enable signal e Region of interest The NI 1426 uses a second level of active pixel and active line regions for selecting a region of in
39. uire with the NI 1426 NI PCI 1426 User Manual 1 2 ni com Chapter 1 Introduction Vision Builder for Automated Inspection NI Vision Builder for Automated Inspection AI is configurable machine vision software that you can use to prototype benchmark and deploy applications Vision Builder AI does not require programming but is scalable to powerful programming environments Vision Builder AI allows you to easily configure and benchmark a sequence of visual inspection steps as well as deploy the visual inspection system for automated inspection With Vision Builder AI you can perform powerful visual inspection tasks and make decisions based on the results of individual tasks You also can migrate the configured inspection to LabVIEW extending the capabilities of the applications if necessary Vision Development Module NI Vision Development Module which consists of NI Vision and NI Vision Assistant is an image acquisition processing and analysis library of more than 270 functions for the following common machine vision tasks e Pattern matching e Particle analysis e Gauging e Taking measurements e Grayscale color and binary image display You can use the Vision Development Module functions individually or in combination With the Vision Development Module you can acquire display and store images as well as perform image analysis and processing Using the Vision Development Module imaging novices and experts can
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