PL-A741 Machine Vision Camera System Guide
Contents
1. NOTE 1 The Feature Id field of the Advanced Feature Access Control Register is a 48bit value with the following format 0 7 8 15 16 23 24 31 32 39 40 47 Company ID Advanced Feature Unique ID 0x000168 Feature offset For example The Feature Id field for the FLIP INQ CSR would be 0x000168000114 NOTE 2 It is not necessary to access the Access Control Register to Read Write to the value at the offset pointed to by the value in this register NOTE 3 These are the offsets for the absolute value CSRs for the parameters of GPIO 0 The absolute value CSR offsets for GPIO X can be calculated as follows quadlet offset of Parameter N GPIO X GPIO PARMN ABS 3 X NOTE 4 This is the offset for the absolute value CSR for the Extended Shutter Knee Point 0 The absolute value CSR offsets for Knee Point X can be calculated as follows PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 32 APPENDIX A GLOSSARY quadlet offset of Knee Point X XSHUT KNEE ABS 3 X NOTE 5 In Format 7 the Auto Area must be within the image region specified by the IMAGE POSITION and IMAGE SIZE registers In all other formats the Auto area must be within an image region that has Top and Left coordinates of zero and Height and Width values that correspond to the current Video Format and Mode NOTE 6 Descripto2. typedef struct DESCRIPTOR const U16 wSize Size of this structure in bytes const U16 wVersion 0x0002 Version of this structure float fWhiteBalance White Balance float fSaturation Saturation float fBrightness Brightness float fShutter Shutter float fGain Gain float fKneePoint 4 Extended Shutter Knee Point dif FRAME S TRUCTURE DESCRIPTOR PDESCRIPTOR else FRAME STRUCTURE This section contains all settings that don t change without the host s knowledge float fAutoExposure Auto Exposure Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 43 float fSharpness Sharpness float fHue Hue float fGamma Gamma float fIris Iris float fFocus Focus float fTemperature Temperature float fTriggerParamter Parameter for Trigger float fTriggerDelay Trigger Delay float fZoom Zoom float fPan Pan float fTilt Tilt float fOpticalFilter Optical Filter float fAutoAreaLeft Auto Area Left float fAutoAreaTop Auto Area Top float fAutoAreaWidth Auto Area Width float fAutoAreaHeight Auto Area Height float fFrameRate Frame Rate float fLeft ROI Left float fTop ROI Top float fWidth ROI Width float fHeight ROI Height float fDecimation Decimation float fPixelFormat Pixel Format f
3. 45 Appendix A Glossary 47 Appendix B Spectral Response 48 TECHNICAL SUPPORT 49 INDEX 50 List of Figures Figure 2 1 PL A741 FireWire Machine Vision Camera Standard Configuration 12 Figure 2 2 Standard Configuration E 13 Figure 2 3 Standard Configuration Front View 13 Figure 2 4 Standard Configuration Top and Side VieWS i 14 Figure 2 5 Standard Configuration Back VieW 14 Figure 2 6 Standard Configuration Bottom View 15 Figure 2 7 Right Angle Configuration ss 15 Figure 2 8 Right Angle Configuration Front View menn 16 Figure 2 9 Right Angle Configuration Top View ss 16 Figure 2 10 Right Angle Configuration Side View 16 Figure 2 11 Right Angle Configuration Back View i 17 Figure 2 12 Right Angle Configuration Bottom View 17 Figure 2 13 Camera C Mount Exploded View Standard Configuration shown 19 Figure 2 14 Back View of the PL A741 Showing Connectors 20 Figure 2 15 Machine Vision Connector Interface Schematic AA 21 Figure 10 1 Rolling Shutter Integration and Read Out A 45 PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved vi LIST OF TABLES List of Tables Table 2 1 Pinout of the Machine Vision Connector ss 22 Table 2 2 Operating Environment Conditions 22 Table 2 3 Storage Environment C
4. Brightness Auto Exposure Sharpness White Balance Hue Saturation Gamma Shutter Gain Iris Focus Temperature Parameter for Trigger Trigger Delay Zoom Pan Version 4 0 Copyright 2003 PixeLINK INK All Rights Reserved PAGE 42 APPENDIX GLOSSARY float fTilt Tilt float fOpticalFilter Optical Filter float fAutoAreaLeft Auto Area Left float fAutoAreaTop Auto Area Top float fAutoAreaWidth Auto Area Width float fAutoAreaHeight Auto Area Height dif FRAME STRUCTURE DESCRIPTOR PDESCRIPTOR else FRAME STRUCTURE This section contains all settings that don t change without the host s knowledge float fFrameRate Frame Rate float fLeft ROI Left float fTop ROI Top float fWidth ROI Width float fHeight ROI Height float fDecimation Decimation float fPixelFormat Pixel Format float fKneePoint 4 Extended Shutter Knee Point float fGpioParameter1 16 GPIO Parameter 1 float fGpioParameter2 16 GPIO Parameter 2 float fGpioParameter3 16 GPIO Parameter 3 U8 byGpioMode 16 GPIO Mode U8 byGpioPolarity 16 GPIO Polarity U8 byTriggerMode Trigger Mode U8 byTriggerPolarity Trigger Polarity U8 byTriggerType Trigger Type U8 byReserved Padding to quadlet align DESCRIPTOR PDESCRIPTOR endif FRAME STRUCTURI h P 9 3 Descriptor Version 0x0002
5. APPENDIX A GLOSSARY Absolute Auto Exposure Exposure Value Relative Sharpness Percentage Relative White Balance Degrees Kelvin Absolute Hue Degrees Relative Saturation Percentage Relative Gamma None Relative Shutter Seconds Absolute Gain dB Relative Iris F Number Absolute Focus Meters Absolute Temperature Degrees Celcius Absolute Zoom Power Relative Pan Degrees Relative Tilt Degrees Relative Frame Rate Frames Per Second Absolute Trigger Delay Seconds Absolute Extended Shutter Knee Points Seconds Absolute L Advanced Features Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 39 Frame Format A frame coming from the camera has the following format upon reaching the driver Byte 0 Byte 1 Byte 2 Ls Byte N 2 Byte N 1 Frame Descriptor See Descriptor Structure Format on page 40 DCAM Frame padding region N Number of bytes per frame width height bytes per pixel If multiple descriptors are being used then a synchronization code is encoded in the first four pixels This code ensures that the driver knows which frame it is receiving from the camera in case the frame size changes between descriptors T
6. Maximum current is 15 mA Timing See Section 4 2 on page 35 PixeLINK API Refer to the functions PxLSetFeature PxLGetFeature 2 7 Operation 2 7 1 Operating Environment Table 2 2 Operating Environment Conditions Temperature 0 C to 50 C 32 F to 122 F Temperature change 10 C minute 18 F minute Shock 50G Vibration 10 G at 20 200 Hz Humidity 20 80 non condensing Version40 00 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 23 2 7 2 Storage Environment Table 2 3 Storage Environment Conditions Condition Limits Temperature 40 C to 75 C 40 F to 167 F Temperature change lt 10 C minute lt 18 F minute Shock 50 G Vibration 10 G at 20 200 Hz Humidity 20 80 non condensing 2 7 3 Power The host computer can supply power to the camera via the FireWire bus if the computer has a six pin FireWire connector and the total power demand on the bus does not exceed the bus capacity Other systems such as laptop computers or those with several FireWire devices daisy chained require an external 12 V supply to power the camera This external power supply must be connected to the FireWire bus For information about laptop accessory kits that include external power supplies contact your PixeLINK vendor Power Demand The PL A741 draws 4 2 watts from
7. float fKneePoint 4 float fGpioParameterl 16 float fGpioParameter2 16 float fGpioParameter3 16 float fAutoAreaLeft float fAutoAreaTop float fAutoAreaWidth float fAutoAreaHeight U8 byGpioMode 16 U8 byGpioPolarity 16 U8 byTriggerMode U8 byTriggerPolarity U8 byTriggerType U8 byReserved DESCRIPTOR PDESCRIPTOR endif FRAME STRUCTURE L Tf PAGE 41 Parameter for Trigger Trigger Delay Zoom Pan Tilt Optical Filter Frame Rate ROI Left ROI Top ROI Width ROI Height Decimation Pixel Format Extended Shutter Knee Point GPIO Parameter 1 GPIO Parameter 2 GPIO Parameter 3 Auto Area Left Auto Area Top Auto Area Width A G G T T T uto Area Height PIO Mode PIO Polarity rigger Mode rigger Polarity rigger Type Padding to quadlet align 9 2 Descriptor Version 0x0001 typedef struct DESCRIPTOR const Ul6 wSize const U16 wVersion 0x0001 float fBrightness float fAutoExposure float fSharpness float fWhiteBalance float fHue float fSaturation float fGamma float fShutter float fGain float fIris float fFocus float fTemperature float fTriggerParamter float fTriggerDelay float fZoom float fPan PixeLINK PL A741 Machine Vision Camera System Guide Pixe Size of this structure in bytes Version of this structure
8. 1 x 32 tpi A lens is not included 2 4 2 Protective Glass Each Camera is fitted with a piece of BK7 glass to protect the sensor The glass is held in place by the Camera s C mount assembly Figure 2 13 on page 19 and can be removed if required The assembly is identical for the C mount of the Right Angle configuration The protective glass can be removed for cleaning or for replacement with a special filter Because of the risk of damage to the sensor only the manufacturer should perform modifications to the camera fittings Caution A Removing the glass increases the likelihood of contaminating the image sensor If the glass is not place operate the camera under clean room conditions only Removing the Glass 1 Ensure that the FireWire cable is disconnected from the Camera Remove the lens or other C mount attachment Remove the screws holding the clamp in place see Figure 2 13 on page 19 Using a pair of fine point tweezers carefully lift out the clamp 4 Place a lint free cloth over the C mount Slowly tip the Camera until the glass lands gently in the cloth Store the clamp and screws Cover the C mount to protect the sensor from contaminants Cleaning the Glass Minor Cleaning 1 Carefully apply puffs of dry compressed air to move particles off the center of the glass 2 Remove oils with a swab moistened with reagent grade isopropyl alcohol The swab should be damp but not dripping Major cleaning
9. 17 8 mm Figure 2 8 Right Angle Configuration Front View M3 THREAD a 2 m 4 1 970 in 50 0 mm 23 1 mm Figure 2 9 Right Angle Configuration Top View 1 660 in 42 2 mm Figure 2 10 Right Angle Configuration Side View Version 4 0 PixeLINK PL A741 Machine Vision Camera Copyright 2003 PixeLINK i All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 17 0 493 in 0 493 in 12 5 mm 12 5 mm EL 0 951 in 0 987 in 24 2 mm 25 1 mm i 0 505 in 0 285 in 7 2 mm 12 8 mm 0 505 in 0 985 12 8 mm in 25 0 mm Figure 2 11 Right Angle Configuration Back View 0 762 in 19 4 mm 2 428 in 1 792 in 61 7 mm 45 5 mm 7 O 1 524 in 38 7 mm i M3 THREAD 0 098 in 2 5 mm 4 PLACES Figure 2 12 Right Angle Configuration Bottom View 2 3 Handling and Care Caution Do not open the camera housing ESD Handle the PL A741 as ANSI ESD S20 20 Class Type 3 4000 V Cleaning Housing Clean the housing with a cloth dampened not dripping with reagent grade isopropyl alcohol Glass Clean the protective glass according to the instructions in Section 2 4 2 on page 18 PixeLINK PL A741 Version 4 0 Machine Vision Camera gt Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 18 APPENDIX A GLOSSARY 2 4 Lens and Protective Glass 2 4 1 Lens The Camera s C mount fits a standard C mount lens
10. PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 22 APPENDIX A GLOSSARY Table 2 1 Pinout of the Machine Vision Connector Pin Pin Name Function Comments POWER FireWire cable power 8 30 V Maximum current available from this DC typically 12 V pin is 250 mA 6 HI TRIGGER Positive terminal of optically To initiate a trigger apply a voltage of O O isolated trigger input between 5 V and 12 V 4 11 mA to TRIGGER Negative terminal of the trigger terminals optically isolated trigger The optically isolated trigger input input circuit includes an internal 1 kO series resistor When using a voltage higher than 12 V add an external resistor with adequate power rating A typical application of the trigger input is to connect Pin 1 POWER to Pin 2 TRIGGER and use the open collector output of an external position sensor device to complete the circuit from Pin 3 TRIGGER to Pin 4 GROUND Timing See Section 4 1 on page 33 PixeLINK API Refer to the functions PxLSetFeature PxLGetFeature 4 3 Pinout as viewed on the back of the camera or at the solder end of the mating connector GP1 General Purpose Output Open collector current sink output from GPO 1 for strobe pulse optical isolator Provides current sink to GP2 General Purpose Output Pin 4 GROUND when GP1 GP2 as GPO 2 for strobe pulse appropriate is active
11. 2 YUV8 ID 2 4 4 4 YUV8 ID 3 RGB8 ID 4 RGB16 ID 6 Bayer8 ID 7 Bayer16 ID 8 Can the Color Coding ID have different In Desc Inq values in different descriptors 1 Yes 0 No Table 5 2 Feature Element Inquiry CSRs All feature element inquiry registers Offset 500h to 5FFh have the following bit added to them Description Same as DCAM Specification Can this feature have different values In Desc Inq in different descriptors 1 Yes 0 No Same as DCAM Specification Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 37 Features That Affect Isochronous Packet Size or Format This list includes standard DCAM registers as well as extended registers Status and Control Registers CUR V FRM RATE CUR V MODE CUR V FORMAT ISO SPEED Format 7 Registers IMAGE SIZE COLOR CODING ID BYTE PER PACKET Extended Registers DECIMATION FRAME RATE DESCRIPTOR structure at DESC OFFSET When any of these registers are written to ISO EN ONE SHOT and MULTI SHOT should all be set to 0 Otherwise the written values are ignored and an error is returned PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 38 D Feature Unit List Feature Brightness Table 7 1 Feature Units Percentage
12. Do not make more than one connection between the camera and the computer the equipment will not be able to communicate properly and the system can crash Multiple camera connections When connecting multiple cameras do not create a functional loop The number of cameras that may be managed simultaneously depends Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 21 on the total bandwidth and may be limited by power availability and the processing capabilities of the host computer For more information see Section 2 7 5 on page 24 2 6 2 Machine Vision Connector Trigger Strobe Pulse The PL A741 is equipped with a 6 pin Machine Vision connector as shown in Figure 2 14 on page 20 for external control of a trigger strobe or pulse The connector pinout is listed in Table 2 1 on page 22 The connector s interface schematic is shown in Figure 2 15 below The mating plug for the connector is an HR10A 7P 6P a 6 pin round plug connector with solder cup pins for the cable wires Firewire Cable Power BEEN 1 SPOWER 1 K ohm TRIGGER SV to 12V Input OPTO isolator 4mA to 11mA gt 3 TRIGGER lt 15 mA max 5 Current Sink Outputs lt 15 mA max 6 Output OPTO isolator Machine Vision Connector GROUND Logic and Chassis Figure 2 15 Machine Vision Connector Interface Schematic
13. be mounted on a metal plate or fixture A metal 4 20 nut mounting plate is available from your PixeLINK vendor Allow enough room to keep the camera s internal temperature within tolerance For temperature ranges see Section 2 7 on page 22 PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 20 APPENDIX A GLOSSARY 2 6 Connectors The PL A741 Camera has the following connectors on the back as shown in Figure 2 14 below e 2 six pin FireWire Connectors Combined power data and control signals see Section 2 6 1 below e A six pin Machine Vision connector Trigger strobe pulse See Section 2 6 2 on page 21 Machine Vision Control Connector Status Indicator Light FireWire Connectors Figure 2 14 Back View of the PL A741 Showing Connectors 2 6 1 FireWire Connectors Power Data and Control Signals Each PixeLINK Camera has two six pin FireWire connectors ports allowing several devices to be daisy chained The FireWire cable carries image data power and control signals The connectors are compatible with both regular and harness type latching FireWire plugs You do not need to power down the computer to connect or disconnect a camera nor do you need to reboot after this is done Single camera connection The FireWire connectors are functionally identical Either one of them can be used for a single connection
14. is set The Area must be within the current image region See NOTE 5 ADVANCED FEATURE CONTROL Reserved REGISTERS Zero based index of the descriptor tuinen Hon currently in focus Format 7 only Number of descriptors currently in use 200h DESC CFG Number 8 15 Format 7 only See NOTE 6 Append Descriptors to each frame Append Dest 16 1 Append 0 Don t Append 17 31 Reserved Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 31 Description Value for decimation Actual decimation 0 15 is Base Value except when Base 1 BEGIMATIOR l then it is Value Formal 7 only 16 31 Reserved Trigger Source Source 0 1 7 Internal free running 0 External hardware or software Trigger Type Typs M 32 Gichal Shutter 0 Rolling Shutter Reserved Number Number of Knee Points Reserved Lookup Table On Off 1 On 0 Off Reserved GPIO CONTROL REGISTERS GPIO 0 On Off 1 On 0 Off GPIO 0 Polarity 1 Active High 0 Active Low Reserved Mode GPIO 0 Mode GPIO 1 On Off Sol 1 On 0 Off Polarit GPIO 1 Polarity GPIO_1_CFG y 1 Active High 0 Active Low 2 23 Reserved 24 31 GPIO 1 Mode Offset from Advanced Feature Offset value register 0x480 TRIGGER ADV EX SHUTTER LOOKUP TABLE Nor GPIO_0_CFG Polarity
15. 1 seconds from the trigger and is Y parameter 2 seconds in duration External trigger input GPO output ke P4 gt X seconds Y seconds 4 2 2 GPIO Mode 1 Normal The GPO is set to either low or high depending on the value of Polarity 4 2 3 GPIO Mode 2 Pulse The GPO is pulsed whenever it is switched on The GPO outputs X parameter 1 pulses of Y parameter 2 seconds in length separated by Z parameter 3 seconds GPO output with X 2 a pla pla Y seconds Z seconds Y seconds 4 2 4 GPIO Mode 2 Busy The GPO is set whenever the camera is unable to respond to a trigger This is only useful when using Trigger Type Hardware or Software for all other modes it will always be set PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 36 APPENDIX A GLOSSARY Extensions To IIDC 1394 Based Camera Spec v1 30 Table 5 1 Color Coding Inquiry CSR for Format 7 Description Y only Y 8bits non compressed 4 1 1 Y U V 8bits non compressed 4 2 2 Y U V 8bits non compressed 4 4 4 Y U V 8bits non compressed R G B 8bits non compressed COLOR CODING INQ Mono16 Y only Y 16bits non ID 5 compressed R G B 16bits non compressed Bayer Pattern encoding Red pixel first 8bits pixel Bayer Pattern encoding Red pixel first 16bits pixel Mono8 ID 0 4 1 1 YUV8 ID 1 4 2
16. 4 25 41 42 43 44 45 46 47 Shutter 8 27 44 Status indicator light 24 Storage 45 Trigger 8 11 12 13 21 22 27 29 33 34 35 46 Video stream 27 39 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide
17. Computer s trademark for the IEEE 1394 digital bus protocol General Purpose Input Output General Purpose Output Institute of Electrical and Electronics Engineers The frame rate in frames per second Megabyte Megahertz Random Access Memory Standard for encoding color images Red Green Blue The Camera s image sensing chip Region of Interest The portion of the imager area specified for viewing in the preview window or capturing in an image or clip The video image data sent over the FireWire bus cable from the camera to the host computer This is the source of data for the preview window and any captured images or video clips A Version 4 0 Copyright 2003 PixeLINK All Rights Reserved PiXe LINK PAGE 48 APPENDIX B SPECTRAL RESPONSE Appendix B Spectral Response 0 14 0 12 PL A741 Sensor e I e 8 Spectral Response A W o S e 0 02 400 500 600 700 800 900 1000 Wavelength nm Figure B 1 Spectral Response of the Image Sensor in the PL A741 Camera Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide TECHNICAL SUPPORT PAGE 49 Technical Support Tech Notes Tech Notes on a variety of topics are available on our Web site at http www pixelink com Download the Latest Software and Firmware The PL A741 s onboard programming firmware can be upgraded at you
18. Pixe LINK MAKING DIGITAL IMAGING SIMPLE PL A741 Machine Vision Camera System Guide Version 4 0 Copyright O 2003 PixeLINK All Rights Reserved PixeLINK 3030 Conroy Road e Ottawa Ontario e K1G 6C2 e Canada e Tel 613 247 1211 e Fax 613 247 2001 Email info pixelink com Web Site www pixelink com PixeLINK PL A741 Machine Vision Camera System Guide Copyright Notice Version 4 0 Copyright O 2003 PixeLINK All rights reserved This document contains proprietary and confidential information of PixeLINK The contents of this document may not be copied nor duplicated in any form in whole or in part without prior written consent from PixeLINK By purchasing this product the Purchaser s and or any subsequent legitimate owner s of the product henceforth referred to as the Purchaser agree s to abide by the terms of this Agreement and read and recognize the following set of definitions appertaining to the intellectual property items and trademark references as can be found throughout this System Guide PixeLINK provides the information and data included in this document for the Purchaser s benefit but it is not possible for PixeLINK to entirely verify and test all of this information in all circumstances particularly information relating to non PixeLINK manufactured products PixeLINK makes no warranties or representations relating to the quality content or adequacy of this information Every effort has been ma
19. Quadlet offset of the absolute value CSR for GPIO 0 Parameter 1 See NOTE 3 GPIO PARM2 ABS Offset Quadlet offset of the absolute value CSR for GPIO 0 Parameter 2 See NOTE 3 GPIO PARM3 ABS Offset Quadlet offset of the absolute value CSR for GPIO 0 Parameter 3 See NOTE 3 EX SHUTTER INQ Presence Ing Presence of this feature In Desc Inq Can this feature have different values in different descriptors 1 Yes 0 No Reserved Number Knees Maximum Number of Knee Points 1 4 Reserved XSHUT KNEE ABS Offset Quadlet offset of the absolute value CSR for Extended Shutter Knee Point 0 See NOTE 4 LOOKUP INQ Presence Ing Presence of this feature In Desc Inq Can this feature have different values in different descriptors 1 Yes 0 No Reserved Bit Depth Bit depth of an entry in the lookup table Number Number of entries in the lookup table LOOKUP OFFSET Offset Quadlet offset of the first entry in the lookup table Each entry occupies a whole number of bytes e g a 10bit entry occupies 2 bytes The table must be written to in order starting from byte 0 AUTO AREA INQ Presence Ing Presence of this feature In Desc Inq Invalid Area Can this feature have different values in different descriptors 1 Yes 0 No Reserved 0 Valid Area 1 Invalid Area This feature will be ignored until a valid area
20. R SENE 1 97 in 50 mm Lenga sasa 3 94 in 100 mm Weight sers 5 6 oz 160 g without lens M3 THREAD 0 098 in 2 5 mm 4 PLACES Figure 2 3 Standard Configuration Front View PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 14 1 970 in 50 0 mm APPENDIX GLOSSARY 3 940 in 100 1 mm Figure 2 4 Standard Configuration Top and Side Views 0 493 in 0 493 in 12 5 mm 12 5 mm EE 0 951 in 0 987 in 24 2 mm 25 1 mm i 0 505 in 0 285 in 72mm 12 8 mm 0 505 in AE 12 8 mm in 25 0 mm Figure 2 5 Standard Configuration Back View Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX GLOSSARY PAGE 15 1 524 in 38 7 mm wel 0 762 in Ly 119 4 mm M3 THREAD 0 098 in 2 5 mm I 4 PLACES 1 970 in 50 0 mm Figure 2 6 Standard Configuration Bottom View 2 2 2 Right Angle Configuration Height a 1 38 in 35 mm Width M 1 97 in 50 mm Length condi cde 3 16 in 131 mm Ve LE 6 7 02 190 g without lens Figure 2 7 Right Angle Configuration PixeLINK PL A741 Version 4 0 Machine Vision Camera gt Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved APPENDIX GLOSSARY PAGE 16 0 701 in
21. Remove the glass as directed above and clean with reagent grade isopropyl alcohol Caution Do not use acetone to clean the glass Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 19 NOTE Do Not Detach the C Mount Adapter from the Camera Screws 2 Ba 2 56x 125 Protective Glass Figure 2 13 Camera C Mount Exploded View Standard Configuration shown Bottom Mount As shown in Figure 2 6 on page 15 Standard configuration and Figure 2 12 on page 17 Right Angle configuration there are four M3 threaded holes on the bottom of the PL A741 Camera These holes can be used to attach the camera to an optional 4 20 nut mounting plate available from your PixeLINK vendor or to mount the camera to a custom fixture Sensor Face Mount As shown in Figure 2 3 on page 13 Standard configuration and Figure 2 9 on page 16 Right Angle configuration there are four M3 threaded holes surrounding the C mount These holes can be used to mount the Camera to a custom fixture Mounting Clearances Allow sufficient clearances for access to connectors and the status light back of camera The dearances necessary for adequate cooling are dependent on the ambient temperature of the operating environment and the thermal conductivity of the mounting hardware The camera dissipates 4 2 W so for optimal performance the camera should
22. an change from frame to frame with the host computer s knowledge are included in the first section such as features that may be in Auto mode This structure is referred to in the PixeL INK API Reference Version 4 Three versions of the descriptor structure follow 9 1 Descriptor Version 0x0000 typedef struct DESCRIPTOR There is no data attached to the end of a frame for version 0x0000 dif FRAME STRUCTURE DESCRIPTOR PDESCRIPTOR felse FRAME STRUCTURE This section contains all settings that don t change without the host s knowledge const U16 wSize 364 Size of this structure in bytes const U16 wVersion 0x0000 Version of this structure float fBrightness Brightness float fAutoExposure Auto Exposure float fSharpness Sharpness float fWhiteBalance White Balance float fHue Hue float fSaturation Saturation float fGamma Gamma float fShutter Shutter float fGain Gain float fIris Iris float fFocus Focus float fTemperature Temperature Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX GLOSSARY float fTriggerParamter float fTriggerDelay float fZoom float fPan float fTilt float fOpticalFilter float fFrameRate float fLeft float fTop float fWidth float fHeight float fDecimation float fPixelFormat
23. are Requirements e Microprocessor Recommended Pentium 4 Mac G4 or equivalent 1 5 GHz Minimum Pentium III Mac G4 or equivalent 450 MHz e Memory Recommended 128 MB RAM Minimum 64 MB RAM e Desktop resolution Recommended 1280 x 1024 Minimum VGA 640 x 480 e 25 MB of hard drive space e A video card with 24 bit or 32 bit True Color graphics capability at least 8 MB of video memory and the latest vendor driver installed Operating System Requirements for PixeLINK Software Microsoft Windows The PL A741 camera can be controlled by PixeLINK applications created using API Version 4 running on e Windows 2000 with Service Pack 1 SP1 installed or e Windows XP with Service Pack 1 SP1 installed Service Packs are available for download from the Microsoft Web Site http www microsoft com Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 9 Laptop Computers Only Because of the specialized hardware configurations of laptop computers they require additional installation considerations e A built in FireWire port or a preinstalled CardBus card slot and a FireWire CardBus adapter card 400 Mbps e An external 12 V DC power supply Although certain laptop models may be able to provide power to the camera via the FireWire bus it is more likely that the system will require an external power supply for
24. are being exposed As each row is read out another row is added to the group of rows being integrated The arrowhead indicates the row currently being read out Dashed lines indicate inactive rows The three solid lines preceding the read out row indicate the rows being integrated Figure 10 1 Rolling Shutter Integration and Read Out Frames are kept in a circular buffer that is one in which the oldest frame is constantly being overwritten with new frame data When the camera receives a request for image data the data is transmitted to the host computer starting with the oldest frame in the buffer Because Rolling Shutter exposes rows in the integration area while reading out fully exposed rows that is it does not stop exposure to perform read out it provides evenly exposed image data with the greatest possible speed under the given parameters Use it when a continuous sequence of frames is required such as in the capture of smooth video clips Each row of pixels has a slightly different exposure start and end times from the adjacent rows so Rolling Shutter can produce a jagged or blurred effect in fast action images unless the exposure time is sufficiently short Under this condition consider using Synchronous Shutter if the circumstances allow it 10 3 Synchronous Shutter With Synchronous Shutter all rows in the ROI are reset then exposed simultaneously for a specified time At the end of the exposure time each pixel
25. b site http www pixelink com lists third party applications recognized by PixeLINK as having been specially designed to work with PixeLINK cameras 1 5 Compatibility with Other PixeLINK Products The PL A741 is compatible with other Version 4 0 PixeLINK Products 1 6 Related PixeLINK Documentation e PL A741 User s Manual This manual describes the functionality of the PixeLINK Megapixel FireWire camera hardware and software including the PixeLINK Developers Application Users should consult the User s Manual ifthis is the first time installing Firewire or USB hardware before installing PixeLINK software asa guide when using the PixeLINK Developers Application Sections include e Installation of the camera hardware and PixeLINK software e Features and operation of the PixeLINK Developers Application e PixeLINK Camera API Reference Version 4 This manual provides a reference for the PixeLINK Camera API and related software Sections include e Basics principles of using the PixeLINK Camera API Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 11 e A summary of the PixeLINK Camera API functions e Descriptions of individual API functions e Sample code 1 7 Camera Accessories Accessories such as trigger kits tripod mounts lenses laptop accessory kits and hands free switches are available from PixeLINK For a current l
26. ble 2 5 on page 25 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 25 Table 2 5 Packet Sizes Region of Interest ROI Clock Frequency 640 x 480 1024 x 1280 MHz 1280 6 120 1280 8 1280 1280 Example Based on the FireWire bus only what is the largest number of cameras that can be managed simultaneously if each one operates with 640 x 480 ROI and an 8 MHz clock frequency Solution The FireWire packet limit is 4800 From Table 2 5 above the packet size for a 640 x 480 ROI at 8 MHz is 1280 4800 3 75 Therefore no more than three Cameras can be 1280 managed simultaneously at 640 x 480 and 8 MHz To confirm The total packet size for four cameras is 4 x 1280 5120 which exceeds the FireWire packet limit The total packet size for three cameras is 3 x 1280 3840 which is less than the limit PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 26 APPENDIX A GLOSSARY Camera Features The PL A741 is compliant with the IIDC 1394 based Digital Camera Specification Version 1 30 The IIDC specification requires that the camera hardware retain a record of all the features supported by the camera The software and drivers used to control the camera query the camera to retrieve a list of supported features and
27. constitutes a mandatory prerequisite for owning and or using the product for which the Guide was created It is the Purchaser s responsibility to ensure that the information contained within the Sections is maintained as a part of the System Guide at all times should the Purchaser discover that the page s containing the Sections is are missing and or was not provided with the System Guide and or become illegible PixeLINK should be contacted as soon as possible and the Sections requested PixeLINK shall not be held liable for any and all copyright violations that may ensue in relation to its products and or the consequences of their intended and unintended usage October 2003 Part Number 04327 01 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide i Medical Use This camera is not intended for use in medical applications PixeLINK PL A741 Version 4 0 Machine Vision Camera e Copyright 2003 PixeLINK System Guide PiXZE LINK All Rights Reserved TABLE OF CONTENTS Table of Contents 1 Introduction 7 1 1 The PixeLINK PL A741 Machine Vision Camera 7 1 2 Topics Covered in this Guide sis 7 1 3 System Requirements uses ta hinkende kand emere tua tuc omae ENEE EE reca RER pais 8 1 4 Functionality with Third Party and Custom Applications eese 9 1 5 Compatibility with Other PixeLINK Products ENNEN 10 1 6 Related PixeLINK Docu
28. ctrical and Electronics Engineers Incorporated in the United States and or other countries FireWire is a trademark of Apple Computer Inc registered in the U S and other countries Microsoft DirectShow and Windows are either trademarks or registered trademarks of Microsoft Corporation in the United States and or other countries 77FF is a trademark or registered trademark of Adobe Systems Incorporated in the United States and or other countries All other products brand names company names are trademarks or registered trademarks of their respective owners Definition of Terms This Section is intended to define certain terminology used in this System Guide while ensuring proper attribution and honoring of any and all trademarks and intellectual property items in terms of attribution to their respective owners as mentioned in this System Guide The Purchaser shall hereby recognize the following definitions set herein as can be found throughout this System Guide Camera shall henceforth refer to a PixeLINK Camera API shall henceforth refer to the PixeLINK Camera Application Programming Interface Kjtshall henceforth refer to a PixeLINK Camera Kit FireWire shall henceforth refer to the IEEE 1394a interface specification DirectShow shall henceforth refer to the Microsoft DirectShow multimedia software Windows shall henceforth refer to a Microsoft Windows operating system The above Sections set forth Terms and Conditions compliance with which
29. de to ensure the accuracy of this Guide however PixeLINK assumes no responsibility for any errors or omissions in this document PixeLINK shall not be held liable for any errors or for incidental or consequential damages in connection with the furnishing performance or use of this System Guide or the examples herein PixeLINK assumes no responsibility for any damage or loss resulting from the use of this System Guide loss or claims by third parties which may arise through the use of this product any damage or loss caused by deletion of data as a result of malfunction or repair or any other damage related to the use of this product or associated documentation The information in this document is subject to change without notice Definitions of Intellectual Property and Trademark Attributions This Section is intended to ensure proper attribution and honoring of any and all trademarks and intellectual property items in terms of attribution to their respective owners as mentioned in this System Guide The reader is encouraged to consult this Section whenever uncertainty presents itself as to the terms their meaning within the System Guide and the trademarks and intellectual property items they stand to identify whether by themselves or in conjunction with other terms and items PixeLINK is either a trademark or a registered trademark of PixeLINK in Canada and or other countries JEEE is a registered trademark or service mark of the Institute of Ele
30. e 28 4 Trigger and GPIO Modes 33 4 1 TAGEN e erektil 33 4 1 1 Trigger Mode Q m M HE 33 4 1 2 Trigger Mode E ekke 33 4 1 3 Trigger MOGG 2 inis ceris cett e sentences ons ne are bd ORE cheng banden ond 34 zm EE Let WEE 34 4 1 5 Trigger MOd 4 oie hidden Once raa ses suo cese bri nu Ursa ner ERR RR DX da eee 34 4 2 GPIO MOESS poe clan 35 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK All Rights Reserved Machine Vision Camera Pi Ke L INK System Guide LIST OF FIGURES v 4 2 1 GPIO Mode 0 Strobe sssrini in paea aa aa ita aa kun audae asa RR aaa 35 4 2 2 GPIO Mode 1 Normal cec no odeur erae rta a tunnel ad inna Dn rut Ex ux Pn UR EXE CE FRE X uS 35 4 2 3 GPIO Mode 2 Pulse iere Itane er bnt tem te esie sa mas aa Dii exe xao apa ee 35 4 2 4 GPIO Mode 2 BUSY eerte nine tH ER Ribes kk dpa ce ra ete RR iaaii Hra e RR t 35 5 Extensions To IIDC 1394 Based Camera Spec v1 30 36 6 Features That Affect Isochronous Packet Size or Format 37 7 Feature Unit List 38 8 Frame Format 39 9 Descriptor Structure Format 40 9 1 Descriptor Version OXOO00 visa sacs eiii nant eria n np anna ii 40 9 2 Descriptor Version 0x0001 iier eerie niine inae seesi r nn nana dna nan n kin nd ai 41 9 3 Descriptor Version 0X0002 i uri 42 10 Operating Exposure Modes 44 10 2 Rolling Shutter 44 10 3 Synchron s Shutter E
31. first external trigger input falling edge At the N parameter external trigger input falling edge integration will be stopped Parameter is required and must be two or more N gt 2 EE EE External trigger input with parameter 4 d Lon Integration time 4 1 4 Trigger Mode 3 This is an internal trigger mode The camera issues trigger internally and cycle time is N times parameter of the cycle time of fastest frame rate Integration time of incoming light is described in Shutter register Parameter is required and must be one or more N gt 1 N x Tf N is parameter Tf is cycle time of the fastest frame rate ke gt WM Internal trigger kcal II Integration time Shutter register value 4 1 5 Trigger Mode 4 The camera captures N parameter frames after a trigger at the specified integration time and frame rate External trigger input Frame output with parameter 3 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 35 4 2 GPIO Modes There are four GPIO General Purpose Input Output modes available for use with the GPO pins on the Machine Vision connector see Section 2 6 2 on page 21 e Strobe e Normal e Pulse e Busy Note that the input is Low Active 4 2 1 GPIO Mode 0 Strobe The GPO is set after a trigger occurs The GPO pulse occurs X parameter
32. gth in bytes of the Camera Description string ADVANCED FEATURE INQUIRY REGISTERS READ ONLY 0 63 Presence Inq 0 Presence of this feature NAME INQ 1 15 Reserved Maximum length of Camera Name in bytes Quadlet offset of the Camera Name NAME OFFSET Value 0 31 string from the base address of the initial register space See NOTE 2 108h NAME LENGTH Value 0 31 EE GEM GENE ME Max Length 16 31 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX GLOSSARY DESC INQ Presence Inq PAGE 29 Description Presence of this feature Reserved Max Num Struct Ver 16 31 Maximum number of Descriptors Version of the Descriptor Structure DESC OFFSET Value 0 31 Quadlet offset of the Descriptor Structure from the base address of the initial register space See NOTE 2 DECIM INQ FRAME RATE ABS Presence Ing 0 Presence of this feature In Desc Inq 1 Can this feature have different values in different descriptors 1 Yes 0 No 2 7 Reserved Base 8 15 Base for decimation Maximum decimation is Base Max Value except when Base 1 then it is Max Value Max Value Offset 16 31 The maximum value for the decimation variable Quadlet offset of the absolute value CSR for the Frame Rate only valid
33. he code is encoded as follows Byte 0 Bits 7 0 Byte 1 Bits 7 1 Code Bit 7 Byte 2 Bits 7 0 Byte 3 Bits 7 1 Code Bit 6 Byte 4 Bits 7 0 Byte 5 Bits 7 1 Code Bit 5 Byte 6 Bits 7 0 Byte 7 Bits 7 1 Code Bit 4 Byte 8 Bits 7 0 Byte 9 Bits 7 1 Code Bit 3 Byte 10 Bits7 0 Byte 11 Bits 7 1 Code Bit 2 Byte 12 Bits 7 0 Byte 13 Bits 7 1 Code Bit 1 Byte 14 Bits 7 1 Byte 15 Bits 7 1 Code Bit 0 Where Code is an 8 bit number Bit 7 MSB Code is zero for the first frame of a video stream and it increments by one for each frame after that rolling over once it reaches the number of descriptors currently in use i e if three descriptors are in use Code will roll over when it reaches 2 PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 40 APPENDIX A GLOSSARY Descriptor Structure Format The descriptor structure has two parts e The first section of this structure contains a list of all the features that can change between descriptors e The second section contains all other features The first section of the structure is attached to the end of each frame sent to the driver The entire structure first and second sections is used when accessing the Descriptor structure located at DESC OFFSET The structure is required to be as small as possible so only features that c
34. in Format 7 FLIP INQ H Pres Inq Presence of Horizontal Flip In Desc Inq 1 Can Horizontal Flip have different values in different descriptors 1 Yes 0 No 2 15 Reserved V Pres Inq 16 Presence of Vertical Flip In Desc Inq 17 Can Vertical Flip have different values in different descriptors 1 Yes 0 No 18 31 Reserved TRIG_ADV_INQ Presence Inq 0 Presence of this feature In Desc Inq 1 Can this feature have different values in different descriptors 1 Yes 0 No Reserved Trig Intern Inq Can the camera be triggered internally free running 1 Yes 0 No Can the type of trigger be changed Trig Type Inq 1 Yes 0 No Reserved 424h TRIG DEL ABS Offset man SIE offset of the absolute value CSR or Trigger Delay 128h GPIO INQ Presence Ing 0 Presence of this feature Can this feature have different values in In Desc Inq 1 different descriptors 1 Yes 0 No 2 3 Reserved Number 4 7 Number of GPIO lines 1 15 Mode Inq 8 Presence of GPIO Mode 0 Model Inq 9 Presence of GPIO Mode 1 PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide Pi Ket IN K All Rights Reserved PAGE 30 Mode Inq APPENDIX GLOSSARY Description Presence of GPIO Mode 2 Mode Inq Presence of GPIO Mode 3 Reserved GPIO PARM1 ABS Offset
35. ist of accessories visit the PixeLINK Web site at http www pixelink com or contact your PixeLINK vendor PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 12 APPENDIX A GLOSSARY Hardware Overview 2 1 PL A741 Camera Hardware Features Figure 2 1 PL A741 FireWire Machine Vision Camera Standard Configuration Hardware Features e 1 3 Megapixel imager resolution 1280 x 1024 e FireWire interface two six pin connectors e Machine Vision interface for external trigger and GPO strobe e Lens mount for a standard C mount lens 1 x 32 tpi lens not included e Front and bottom mounting holes for a tripod or other mounting fixture 4 40 screws e Two configurations Standard and Right Angle See Section 2 2 on page 13 for hardware dimensions and locations of hardware features Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 13 Accessories Accessories such as trigger kits tripod mounts lenses laptop accessory kits and hands free switches are available from PixeLINK For a current list of accessories visit the PixeLINK Web site at http www pixelink com or contact your PixeLINK vendor 2 2 PL A741 Camera Dimensions Measurements are 0 005 inches 0 15 mm 2 2 1 Standard Configuration wl E 1 38 in 35 mm 31 R
36. loat fGpioParameterl 16 GPIO Parameter 1 float fGpioParameter2 16 GPIO Parameter 2 float fGpioParameter3 16 GPIO Parameter 3 U8 byGpioMode 16 GPIO Mode U8 byGpioPolarity 16 GPIO Polarity U8 byTriggerMode Trigger Mode U8 byTriggerPolarity Trigger Polarity U8 byTriggerType Trigger Type U8 byReserved Padding to quadlet align DESCRIPTOR PDESCRIPTOR endif FRAME STRUCTURE I PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 44 APPENDIX A GLOSSARY Operating Exposure Modes The PL A741 has two shutter types e Rolling Shutter free running image capture See Section 10 2 below e Synchronous Shutter triggered image capture See Section 10 3 on page 45 Table 10 1 Capture Methods Use of Other Sync Shutter Device Possible Capture Type Type e g Strobe Flash Free Running Continuous Continuous Rolling No Internally Triggered Free Running Continuous Synchronous No Continuous Hardware Triggered Frame on Frame on Demand Synchronous Yes Demand Software Triggered Frame on Frame on Demand Synchronous Yes Demand This applies only to the use of the camera with the PixeLINK API or PixeLINK software 10 2 Rolling Shutter With a Rolling Shutter only a few rows of pixels are exposed at one time The camera builds a frame by reading out the most ex
37. ltering and image processing See Table 3 2 on page 28 Descriptors A descriptor is a collection of camera feature properties that is applied to a frame Since each frame can have a unique descriptor custom descriptors can be used to change camera settings on a frame by frame basis for each frame in the video stream PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK Guide PiXe LINK All Rights Reserved System PAGE 28 APPENDIX A GLOSSARY Table 3 2 Details of Selected Advanced Features Feature o o E o Q Q 2 N Frame Rate Absolute Trigger Delay Absolute Extended Shutter Absolute Knee Points 3 2 PL A741 Advanced Features The Advanced Features of the PL A741 are controlled using IIDC Configuration Status Registers CSRs Table 3 3 below lists the CSRs applicable to the PL A741 Table 3 3 Advance Feature Configuration Status Registers of the PL A741 Bit Description Advanced Feature Access Control Register See NOTE 1 CAMERA INFO REGISTERS READ ONLY Quadlet offset of the Serial Number SERIAL OFFSET string from the base address of the initial register space SERIAL LENGTH A in bytes of the Serial Number Fpga Version in format SE ByteO Byte1 Byte2 Byte3 Firmware Version in format SE ByteO Byte1 Byte2 Byte3 Quadlet offset of the Camera Description CAM DSC OFST string from the base address of the initial register space See NOTE 2 CAM DSC LNTH Len
38. mentation sisi 10 1 7 Camera ACCESSONE S RTI IU 11 2 Hardware Overview 12 2 1 PL A741 Camera Hardware Features i 12 2 2 PL A741 Camera Dimenslons sisi nennen nennen nnne nnne nnn nnn 13 2 2 1 Standard Configuration ceci terere intenta trn nana aa Fe RR na ena uan ERR a ERR Ra NER End 13 2 2 2 Right Angle Configuration ENEE 15 2 3 Handling nd Gare E e 17 2 4 Lens and Protective Glass reset tta aera cuo tas ii 18 y P A 18 2 4 2 Greg en Ve 18 2 5 MOUNTING eE H ER 19 2 6 Me Un ege 20 2 6 1 FireWire Connectors Power Data and Control Signals VU 20 2 6 2 Machine Vision Connector Trigger Strobe Pulse 21 2 7 Gog io E A 22 2 7 1 Operating ENVIFONMENE 2 c reuera cuna vu ort nora rk hn cona ke a ane Foe durar bar eme gar E FERE RR Ded 22 2 7 2 Storage Environment iussi ener sous turn deca cere E ancecesdeticescededectenctiensetiedettectecdes 23 PAT ER VU I E 23 2 7 4 Status Indicator Light EEN 24 2 7 5 Connecting Multiple Cameras Daisy Chaining kee 24 3 Camera Features 26 3 1 Supported Features 26 3 Ll eege EI 26 3 1 2 Basic Feat Wee iiie eiie bec eua oo cic Eed ini n 26 3 1 3 Advanced Features cese coat rri rta Cegedel aa 27 3 2 PL A741 Advanced Features ssssssssnssnemenanannnssenmeneeneeessnnneneue
39. ndicates the operational status of the camera as described in Table 2 4 below Table 2 4 Status Indicator Signals Signal Type and Color Status Solid GREEN The camera is ready for operation Flashing GREEN The camera is performing a operation Flashing RED The camera is being initialized OR The camera has issued a warning on the latest command received Solid RED The camera has experienced an unrecoverable error contact PixeLINK see page 49 for contact information Off The computer s FireWire adapter card cannot supply adequate current for the number of devices on the bus Detach some of the devices or attach a power supply to the FireWire cable 2 7 5 Connecting Multiple Cameras Daisy Chaining When connecting multiple cameras do not create a functional loop This will have the same consequences as making a duplicate connection between a single camera and the computer For example if you connect camera A to camera B and camera B to camera C you should not connect camera A directly to Camera C Power Limitation Most two port FireWire adapter cards can power up to three cameras simultaneously For more information see Power Limitation on page 23 FireWire Bandwidth Limitation The FireWire bus requires that the sum of the packet sizes of the attached cameras be less than 4800 Packet sizes for cameras operating with 640 x 480 and 1024 x 1280 Regions of Interest ROI are given in Ta
40. onditions ss 23 Table 2 4 Status Indicator Signals EE 24 Table 2 5 Packet SIZES iii 25 Table 3 1 PL A741 Basic Features 27 Table 3 2 Details of Selected Advanced Features NENNEN ENNEN ENEE 28 Table 3 3 Advance Feature Configuration Status Registers of the PL A741 28 Table 5 1 Color Coding Inquiry CSR for Format_7 ss 36 Table 5 2 Feature Element Inquiry CSRS AAA 36 Table 7 1 Feature Units iii 38 Table 10 1 Capture Methods 2 1 iere rye erat Pere Do edd ENEE EEN 44 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 7 Introduction 1 1 The PixeLINK PL A741 Machine Vision Camera The PL A741 is a high performance 1 3 megapixel monochrome C mount camera designed specifically for machine vision applications The camera is connected to the computer by a FireWire interface and is fully IIDC 1 3 compatible In addition the camera provides non IIDC features that raise it above and beyond the standard providing excellent performance for the price Camera Features e No Framegrabber Required e FireWire Interface Two Connectors e IIDC 1 3 DCAM Compatible PLUS Extended Features e 33 fps Uncompressed at 1k x 1k e Extended Dynamic Range e Global Shutter Frame on Demand e Knee Points Multiple Slope Exposure e External Trigger e Available in Right Angle config
41. other information The specification also allows the definition of advanced features specific to a particular camera model This section e outlines basic features of the PL A741 camera and e provides a detailed description of advanced features specific to the PL A741 This information is intended for system integrators and software developers who are e creating low level drivers for the PL A741 or e integrating the advanced features of the camera into IIDC applications using third party software development tools Users of the proprietary PixeLINK driver or the PixeLINK Camera API Version 4 0 might find the information in this section to be too low level and detailed These people should instead refer to the PL A741 User s Manual and the PixeLINK API Reference Manual 3 1 Supported Features Refer to the IIDC specification for more information on accessing and controlling the basic features 3 1 1 Video Formats The PL A741 supports video Format 0 VGA non compressed format 640 x 480 maximum for backwards compatibility with older IIDC 1 04 drivers and DirectShow The camera also supports Format 7 partial image sizes 3 1 2 Basic Features The PL A741 supports basic features as shown in Table 3 1 on page 27 Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 27 Feature Brightness Absolute Table 3 1 PL A741 Basic Feat
42. posed row of pixels and ceasing exposure of that row starting exposure of the next unexposed row down in the Region of Interest ROI the user specified active area on the imager then repeating the process on the next most exposed row and continuing until the frame is complete After the bottom row of the ROI starts its exposure the process rolls to the top row of the ROI to begin exposure of the next frame s pixels The exposure down each frame and from frame to frame remains consistent due to this continuous read out The row read out rate is constant so the longer the exposure setting the greater the number of rows being exposed or integrated at a given time Integrated means that the pixels are building up or integrating an electrical charge in response to the photons hitting them Rows are added to the exposed area one at a time The more time that a row spends being integrated the greater the electrical charge built up in the Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 45 row s pixels and the brighter the output pixels will be As each fully exposed row is read out another row is added to the set of rows being integrated Example A very short exposure may be obtained by having only three rows of integration see Figure 10 1 page 45 This means that as each row is being read out the three rows ahead of it
43. r computer Whether you have a tech support issue or not we recommend that you check our Web site http www pixelink com regularly for the latest versions of your PixeLINK software and firmware Technical Questions Please follow these steps before contacting our technical support team 1 Review the relevant sections of the documentation 2 Check the PixeLINK Web site for a new software and firmware b applicable Tech Notes 3 Carefully document the problem you are experiencing noting any warning or error messages that may appear during operation 4 Have your Camera s serial number and other identifying information at hand The serial number can be found on bottom of the Camera PixeLINK Customer Support Email support pixelink com Web http www pixelink com PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 50 Index Accessories 11 13 Advanced features 26 Application Programming Interface API ii 7 8 9 10 11 22 26 40 44 47 Configuration status registers CSRs 28 29 30 31 36 Connectors 7 12 19 20 Decimation 29 31 Descriptors 27 29 30 32 36 39 40 Dimensions 12 Exposure 8 27 44 45 46 Glass over sensor 17 18 INDEX IIDC compliance 8 Lookup table LUT 27 30 Machine Vision connector pinout 21 Mounting 7 12 19 Power 9 20 21 22 23 24 Region of Interest ROI 2
44. rs are added or removed by increasing decreasing this value When a descriptor is created it will have the same values as the current descriptor Current field or the camera settings if it is the first descriptor to be created When the descriptor number is decreased then the descriptors with a higher index are removed first Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX A GLOSSARY PAGE 33 Trigger and GPIO Modes 4 1 Triggering e Trigger Modes 0 3 are defined by the IIDC 1 3 specification e Trigger Mode 4 is a custom mode Note that the trigger input is Low Active 4 1 1 Trigger Mode 0 The camera starts integration of the incoming light from external trigger input falling edge Integration time is described in Shutter register No parameter is needed uu JE EEG External trigger input aL Integration time Shutter register value 4 1 2 Trigger Mode 1 The camera starts integration of the incoming light from external trigger input falling edge Integration time is equal to low state time of the external trigger input No parameter is needed E c External trigger input Integration time PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 34 APPENDIX A GLOSSARY 4 1 3 Trigger Mode 2 The camera starts integration of incoming light from
45. ss to streaming video e The ability to save high quality still images and video clips The PixeLINK extensions in the API control functions not covered by the IIDC 1 3 specification offering greater functionality than in standalone IIDC usage of the camera API functions may be called from C C or Visual Basic The PixeLINK Camera API software and reference documentation are included in PixeLINK Camera Developer s Kits and SDKs PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 10 APPENDIX A GLOSSARY FREE Demonstration Application LI The PixeLINK Developers Application demonstrates all major features of the PL A741 and the PixeLINK Camera API This application is available for download from the PixeLINK Web site http www pixelink com and in PixeLINK Camera SDK and Developer s Kits Purchasers of the SDK and Developers Kits also receive sample code simplifying integration of API functions into custom applications e Third party applications Third party software vendors can maximize performance with the PL A741 by using the PixeLINK Camera API to integrate camera controls directly into their applications By integrating the controls directly the application can access an extended range of options not available through IIDC Check with the third party vendor to see if PixeL INK controls have been integrated into the software The PixeLINK We
46. the FireWire cable For a single camera this is 350 mA 12 V For multiple cameras connected to a single bus see Power Limitation below Power Limitation The power capacity of the bus depends on the FireWire adapter card installed in the host computer To comply with the FireWire specification the adapter card may supply a maximum of 1 5 A per FireWire port However it is permissible for the card s limit to be lower than 1 5 A per port say 1 0 A Note that many cards do not state their current limits In a multiple camera system the current required per camera increases with each additional camera attached to the bus Each additional camera causes the bus voltage to drop so the current demand is increased to maintain a constant power draw of 4 2 W per camera Hence most two port FireWire adapter cards will power only three cameras simultaneously regardless of whether one or both ports of the card are in use If the current demand exceeds the card capacity the status lights on the cameras will switch off The status light is located on the back of the camera as shown in Figure 2 14 on page 20 PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 24 APPENDIX A GLOSSARY 2 7 4 Status Indicator Light The camera has a status indicator light located on the back as shown in Figure 2 5 on page 14 and in Figure 2 14 on page 20 This light i
47. the camera Note A four pin FireWire connector cannot provide power to the camera nor can a CardBus adapter card provide sufficient power For more information about laptop accessory kits including power supplies and CardBus cards visit http ww pixelink com or contact your PixeLINK vendor 1 4 Functionality with Third Party and Custom Applications PixeLINK cameras can be controlled by the following kinds of applications e Applications compliant with the IIDC 1 3 specification The PL A741 can be used out of the box with IIDC 1 3 DCAM or Digital Camera compliant applications The PL A741 uses IIDC features extensively for controlling the camera For more information about IIDC 1 3 compliance with the PL A741 refer to Section 3 on page 26 e Applications created using the PixeLINK Camera API Version 4 For Windows based systems only The PixeL INK Camera Application Programming Interface API offers application software developers a means to adapt existing programs or develop new imaging applications for PixeLINK cameras It allows rapid development of custom applications for camera operation by simplifying the most common tasks associated with configuring and controlling the cameras The PixeLINK Camera API Version 4 0 is a dynamic link library DLL that provides e A powerful easy to use control interface e A generic command set that can be used to control different camera models e Fast and flexible acce
48. uration Custom applications can be developed on Windows platforms in C C or Visual Basic with the PixeLINK Camera Application Programming Interface API available in the PixeLINK Camera SDK and Developer s Kits Version 4 The PixeLINK API offers more functionality and greater control than using the PL A741 with IIDC features alone Visit http ww pixelink com or contact your PixeLINK vendor for details 1 2 Topics Covered in this Guide This Guide provides a reference for the PL A741 hardware and connectors and the control options available through IIDC 1 3 Users should consult this Guide before using the PL A741 with an IIDC compliant application when mounting the PL A741 within a system or enclosure PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 8 APPENDIX A GLOSSARY when planning to use an external trigger or GPO device e g strobe pulse with the PL A741 Sections include e A description of the PL A741 hardware Section 2 e An overview of IIDC compliance and features available with the PL A741 Section 3 e A list of available triggering and GPO modes Section 4 e IIDC features Sections 5 to 9 e A description of the PL A741 s operating exposure modes and shutter types Section 10 References in the PDF version of this Guide are hyperlinked for easy navigation and access 1 3 System Requirements Hardw
49. ures Read Out Min Value Max Value 0 Shutter Absolute 0 00004 o Gain Relative 0 Temperature Absolute Trigger See trigger mode descriptions on page 33 3 1 3 Advanced Features The PL A741 provides controls for the following Advanced Features Camera information retrieval This feature reports the camera s hardware and firmware information specifically the firmware version the FPGA version the camera s serial number and the product ID Trigger features The standard IIDC specification is used whenever possible However the standard does not allow the time to be set between a trigger event and the start of integration so a PixeLINK extension is used to enable this feature See Section 4 1 on page 33 for more information about timing GPOs GPIOs The IIDC specification does not apply to strobes flashes or LEDs A PixeLINK extension allows control of multiple strobes and a general purpose I O The extension also allows control of the time between a trigger event and the activation of a strobe the duration of the strobe and the polarity of the strobe signal See Section 4 2 on page 35 for more information about timing Extended shutter Knee points This feature allows for multiple slope exposure captures to enable a larger dynamic range See Table 3 2 on page 28 Lookup Table LUT This feature allows a user specified lookup table to be applied to the image data enabling custom fi
50. value is transferred immediately to an adjacent storage area to await read out The pixel values are then read out row by row from storage building the frame This use of intermediate storage reduces the gradual overexposure that can occur down the image when the rows are read out directly from the active area PixeLINK PL A741 Version 4 0 Machine Vision Camera Copyright 2003 PixeLINK System Guide PiXe LINK All Rights Reserved PAGE 46 APPENDIX A GLOSSARY Because all rows are exposed simultaneously Synchronous Shutter avoids the jagged or blurred affect produced by Rolling Shutter for fast action images However because it stops exposure to perform read out it does not provide the fastest possible sequence of frames If speed is the main consideration use Rolling Shutter if the circumstances allow it Synchronous Shutter requires a trigger event to reset the pixel data and start exposure for the entire ROI as opposed to Rolling Shutter in which exposure is an on going process See Section 4 1 on page 33 for information about timing Version 4 0 PixeLINK PL A741 Copyright 2003 PixeLINK Machine Vision Camera All Rights Reserved Pike LINK System Guide APPENDIX GLOSSARY PAGE 47 Appendix A Glossary API DLL FireWire GPIO GPO IEEE fps MB MHz RAM RGB Sensor ROI Video stream PixeLINK PL A741 Machine Vision Camera System Guide Application Programming Interface Dynamic Link Library Apple
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