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User Manual MV1-D1024E CameraLink Series

1. a b c d Figure 4 16 ROI configuration examples ROI Dimension MV1 D1024E 160 CL 1024 x 1024 149 fps 512x512 586 fps 256 x 256 2225 fps 128 x 128 7780 fps 128 x 16 36065 fps Table 4 2 Frame rates of different ROI settings minimal exposure time CFR off skimming off and sequen tial readout mode 4 3 Reduction of Image Size 27 4 Functionality Exposure time MV1 D1024E 160 CL 10 us 149 148 fps 100 ys 147 146 fps 500 us 139 139 fps 1 ms 130 140 fps 2 ms 115 140 fps 5 ms 85 140 fps 10 ms 60 99 fps 12 ms 53 82 fps Table 4 3 Frame rate of different exposure times sequential readout mode simultaneous readout mode resolution 1024x1024 pixel correction off CFR off and skimming off 28 4 3 2 Multiple Regions of Interest The Photonfocus MV1 D1024E 160 CL camera can handle up to 512 different regions of interest This feature can be used to reduce the amount image data and increase the frame rate An application example for using multiple regions of interest MROI is a laser triangulation system with several laser lines The multiple ROIs are joined together and form a single image which is transferred to the frame grabber An individual MROI region is defined by its starting value in y direction and its height The starting value in horizontal direction and the width is the same for all MROI regions and
2. Figure 4 30 camera data path 42 4 6 Image Correction 4 6 1 Overview The camera possesses image pre processing features that compensate for non uniformities caused by the sensor the lens or the illumination This method of improving the image quality is generally known as Shading Correction or Flat Field Correction and consists of a combination of offset correction gain correction and pixel interpolation O Since the correction is performed in hardware there is no performance limita tion of the cameras for high frame rates The offset correction subtracts a configurable positive or negative value from the live image and thus reduces the fixed pattern noise of the CMOS sensor In addition hot pixels can be removed by interpolation The gain correction can be used to flatten uneven illumination or to compensate shading effects of a lens Both offset and gain correction work on a pixel per pixel basis i e every pixel is corrected separately For the correction a black reference and a grey reference image are reguired Then the correction values are determined automatically in the camera Do not set any reference images when gain or LUT is enabled Read the follow ing sections very carefully Correction values of both reference images can be saved into the internal flash memory but this overwrites the factory presets Then the reference images that are delivered by factory cannot be restored anymore
3. A 1 Power Supply Connector A 2 Cameralink Connector B Revision History CONTENTS 97 99 99 100 103 CONTENTS Preface 1 1 About Photonfocus The Swiss company Photonfocus is one of the leading specialists in the development of CMOS image sensors and corresponding industrial cameras for machine vision security amp surveillance and automotive markets Photonfocus is dedicated to making the latest generation of CMOS technology commercially available Active Pixel Sensor APS and global shutter technologies enable high speed and high dynamic range 120 dB applications while avoiding disadvantages like image lag blooming and smear Photonfocus has proven that the image quality of modern CMOS sensors is now appropriate for demanding applications Photonfocus product range is complemented by custom design solutions in the area of camera electronics and CMOS image sensors Photonfocus is ISO 9001 certified All products are produced with the latest techniques in order to ensure the highest degree of quality 1 2 Contact Photonfocus AG Bahnhofplatz 10 CH 8853 Lachen SZ Switzerland Sales Phone 41 55 451 00 00 Email sales photonfocus com Phone 41 55 451 00 00 Email support photonfocus com Table 1 1 Photonfocus Contact 1 3 Sales Offices Photonfocus products are available through an extensive international distribution network and through our key account managers Details
4. 4 4 Trigger and Strobe k 34 4 4 1 Introductionl o nn 34 E 34 4 4 3 Exposure Time Control o o e e 36 4 4 4 Trigger Delayl o e o 38 44 5 Burst TNgJEN o acoc a a a a SO eee de ed he ea 38 4 4 6 Trigger timing values Coon 40 4 4 7 Software Trigger a 41 4 4 8 Missed Trigger Counters 2 a 41 4 4 9 Strobe Output 2 0 a 41 Cnet bh ee oe Sag d s i dake eee aw mee ete DN Ss 42 4 6 Image Correction k 43 Be TEISTA a Boe ee a A 43 CONTENTS 3 CONTENTS 5 6 7 4 6 2 Offset Correction FPN Hot Pixels se Da 8 a NEN Ao E e 4 6 4 Corrected Image o mm 4 6 5 Correction Rangesl e 4 7 Gain and Offsetl NL 4 8 Grey Level Transformation LUT 1 2 2 4 9 Crosshairs 4 10 Image Information and Status Line 4281 GAM ee en ee Ele Se a ae ace 4 8 2 GaMMa u u a 3 AE A 4 8 3 User defined Look up Table 4 8 4 Region LUT and LUT Enable 4 9 1 Functionality 4 10 1 Counters and Average Value 4 10 2 Status Line aaa aoaaa 4 10 3 Camera Type Codes k ATT Test IMAGES lt iio cs aiat aa Bet een ee a dl 4 11 1 RAMP esci a a ot a cida 204 a aa a Dan a een ANI Z ESRI e a epa a AAA AAA E 4 11 3 Troubleshooting using the LFSR k 4 12 Configuration Interface CameraLink 2 22 222 u nennen Hardware Interface 5 1 ZEONNECLOFS sucia ar a Cape ce are
5. Activate hot pixel correction Offset Gain Activate offset and gain correction Offset Gain Hotpixel Activate offset gain and hot pixel correction 84 Calibration Offset FPN Hotpixel Correction The offset correction is based on a black reference image which is taken at no illumination e g lens aperture completely closed The black reference image contains the fixed pattern noise of the sensor which can be subtracted from the live images in order to minimize the static noise Close the lens of the camera Click on the Validation button If the Set Black Ref button is still inactive the average of the image is out of range Change to panel Charateristics and change the Property BlackLevel0ffset until the average of the image is between 160 and 400DN Click again on the Validation button and then on the Set Black Ref Button If only offset and hot pixel correction is needed it is not necessary to calibrate a grey image see Calculate Gain Correction The gain correction is based on a grey reference image which is taken at uniform illumination to give an image with a mid grey level lt gt Gain correction is not a trivial feature The quality of the grey reference image is crucial for proper gain correction Produce a grey image with an average between 2200 and 3600DN Click on the Validation button to check the average If the average is in range the Set Grey Ref button is active Calculate Calculate the cor
6. and uses the lower 8 bits of the pixel value so that the total size of a parameter field is 32 bit see Fig 14 47 The assignment of the parameters to the fields is listed in Table 4 7 The status line is available in all camera modes LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB 3 Pixel 107 71 12 13 4 15 162 177 18 19 140 14 121431142115 465 117 1187 1 19 20 24 0022012 FF 00 AA 55 Preamble Field 0 Field 1 Field 2 Field 3 Field 4 Figure 4 47 Status line parameters replace the last row of the image 56 Start pixel index Parameter width bit 32 Parameter Description Preamble 0x55AAOOFF 24 Image Counter see Section 4 10 1 Table 4 7 Assignment of status line fields 4 10 Image Information and Status Line 8 32 Real Time Counter see Section 12 8 Missed Trigger Counter see Section 16 12 Image Average Value raw data without taking in account gain settings see Section 20 24 Integration Time in units of clock cycles see Table 3 3 24 16 Burst Trigger Number 28 8 Missed Burst Trigger Counter 32 11 Horizontal start position of ROI Window X 36 11 Horizontal end position of ROI Window X Window W 1 40 11 Vertical start position of ROI Window Y In MROI mode this parameter is the start position of the first ROI 44 11 Number of rows 1 48 2 Trigger Source 52 2 Digital Gain 56 2 Digi
7. the main window as shown in Fig 6 2 will appear In the PortBrowser in the upper left corner you will see a list of supported ports gt Depending on the configuration your port names may differ and not every port may be functional lt gt If your frame grabber supports clallserial dll version 1 1 CameraLink compliant standard Oct 2001 the name of the manufacturer is shown in the PortBrowser If your frame grabber supports clallserial dll version 1 0 CameraLink compliant O standard Oct 2000 the PortBrowser shows either the name of the dll or the manufacturer name or displays Unknown If your frame grabber does not support clallserial dll copy the clserXXXX dll of O your frame grabber in the PFRemote directory and rename it to clser dll The PortBrowser will then indicate this DLL as clser dll at PFRemote directory After connecting the camera the device can be opened with a double click on the port name or by right clicking on the port name and choosing Open amp Configure If the initialisation of the camera was successful the configuration dialog will open The device is closed when PFRemote is closed Alternatively e g when connecting another camera or evaluation kit the device can also be closed explicitely by right clicking on the port name and choosing Close Make sure that the configuration dialog is closed prior to closing the port G Errors warnings or other important activities are logged in a log wind
8. 1 2 Window This tab contains the settings for the region of interest MV1 D1024E 160 boardO_portO O Serial 1291 Exposure i i Trigger Data Output LUT LinLog Correction Info Region of interest Multi ROI y Store as Defaults x 0 w 1024 Note When MROI is enabled i o 102 v Enable MROI MROI settings can not be changed Settings File 0 H 1024 Y Load MROI from File Load File Set to max ROI Save MROI to File Factory Reset when using ROI in X direction enable DataValid DYAL Feature Frame Rate fps on the frame grabber Index 0 Y o H 1024 5 v Y MROI H total Update Note Htot shows the total height for the MROI mode only a v a v Decimation Decimation Y 1 Average Value Crosshairs Settings for frame grabber Enable Crosshairs ROI settings on the camera interface Use N L these settings to configure the frame grabber Update x su y su JE Wtot AA Update Value 12bit Htot 1 Figure 7 3 Window panel Region of Interest The region of interest ROI is defined as a rectangle X Y W H where X X coordinate starting from 0 in the upper left corner Y Y coordinate starting from 0 in the upper left corner W Window width in steps of 8 pixels H Window height Set to max ROI Set Window to maximal ROI X 0 Y 0 W 1024 H 1024 CS Window width is only available in steps of 8 pixels 74 Decim
9. 41 s tstrobe offset NON burst mode 100 ns 100 ns tstrobe offset burst mode 125 ns 125 ns tstrobe duration 200 ns 0 41 s Ta iso output 45 ns 60 ns terigger pulsewidth 200 ns n a Number of bursts n 1 30000 Table 4 4 Summary of timing parameters relevant in the external trigger mode using the MV1 D1024E 160 CL camera 40 4 4 7 Software Trigger The software trigger enables to emulate an external trigger pulse by the camera software through the serial data interface It works with both burst mode enabled and disabled As soon as it is performed via the camera software it will start the image acquisition s depending on the usage of the burst mode and the burst configuration The trigger mode must be set to Interface Trigger or 1 0 Trigger 4 4 8 Missed Trigger Counters Missed Trigger Counter If an external trigger interface trigger or I O trigger is applied while the camera is not ready to accept a new trigger a counter Missed Trigger Counter is incremented and the trigger is rejected The value of the Missed Trigger Counter can be read out from a camera register Counter MissedTrigger or from the status line see Section 4 10 When the Missed Trigger Counter reaches its maximal value it will not wrap around The user can reset the Missed Trigger Counter Missed Burst Trigger Counter The missed burst trigger counter counts trigger pulses that were ignored by the camera in the burst trigger mode because they occurred
10. Firmware revision of built in FPGA on the ADC PCB of the connected camera uC Revision Firmware revision of built in microcontroller of the connected camera Interface Description of the camera interface 86 Baudrate The actual baud rate between camera and frame grabber SS For any support requests please enclose the information provided on this panel Counters The camera has the following counters Image The image counter is a 24 bit real time counter and is incremented by 1 for every new image Missed Trigger This is a counter for trigger pulses that were blocked because the trigger pulse was received during image exposure or readout In free running mode it counts all pulses received from interface trigger or from I O trigger interface Missed Burst Trigger This is a counter for burst trigger pulses that were blocked because the burst trigger pulse was received during the last burst is not yet finished To update the value of the information properties click on the Update Button to reset the properties click on the Reset Button Status Line Enable Status Line The status line replaces the last line of an image with image information please refer the manual for additional information Temperature Image PCB deg C The temperature of the board PCB where the image sensor is located Image deg C The temperature of the image sensor Update Press this button to update all temperature values 7 1 MV1 D10
11. Region LUTs LUT 0 LUT 1 and Region LUT are enabled LUT O is active in region O x00 x01 y00 y01 and it supersedes LUT 1 in the overlapping region LUT 1 is active in region 1 x10 x11 y10 y11 Fig 4 43 shows an example of keyhole inspection in a laser welding application LUT 0 and LUT 1 are used to enhance the contrast by applying optimized transfer curves to the individual regions LUT 0 is used for keyhole inspection LUT 1 is optimized for seam finding 4 8 Grey Level Transformation LUT 51 4 Functionality 0 0 x00 x10 x01 x11 y01 yll mazo Verse Figure 4 42 Overlapping Region LUT example 0 0 0 0 Os Vina Figure 4 43 Region LUT in keyhole inspection 52 san Yr Fig 4 44 shows the application of the Region LUT to a camera image The original image without image processing is shown on the left hand side The result of the application of the Region LUT is shown on the right hand side One Region LUT was applied on a small region on the lower part of the image where the brightness has been increased Figure 4 44 Region LUT example with camera image left original image right gain 4 region in the are of the date print of the bottle 4 8 Grey Level Transformation LUT 53 4 Functionality 4 9 Crosshairs 4 9 1 Functionality The crosshairs inserts a vertical and horizontal line into the image The width of these lines is
12. a a da vate ie 5 1 1 Cameralink Connector 5 1 2 Power Supply 5 1 3 Trigger and Strobe Signals n oa eaaa a 5 1 4 Status Indicator CameraLink cameras 5 1 5 CameraLink Data Interface The PFRemote Control Tool per eee es Eee tn tiene KEN ge SE N een Gann ete te 6 2 PFRemote and PFLib 2 2 2 2 Hmm mn 6 3 Operating System s 6 4 Installation Notes 2 22 2 2 2m mm nn 6 5 Graphical User Interface GUl 2 a 65 1 POFEBFOWSeR s aa ee ek 28 AT E Very ea an 6 5 2 Ports Device Initialization o 6 5 3 Main Buttons J sasa L 6 6 Device Properties kk e Graphical User Interface GUI 7 1 MV1 DIOZAE 160 lt sin os 2 wu a e e sia laila 71 1 IEXPOSUKE i i ae a u a ee nie sre ee re Re re ee O MES WIQGEH e Sst oath eee Tu EES dod ee hee ee 7 1 4 Data Output 4 20860 eek ea ee eh A a eae aa RR 8 7 1 5 LUT Look Up Table naoa 71 6 ALOE sce ta cs eee an SETA Rea Mei une en De Sera ews tt lovin ay Gals de GS ee Ava ER 2 teed oe Bk ud JA Fe Ko a eee he A Se EEE ZAS AG AER 8 Mechanical and Optical Considerations 8 1 Mechanical Interface for CameraLink Camera Models 2 Adjusting the Back Focus 3 Optical Interface 8 3 1 Cleaning the Sensor 8 4 CE compliance Warranty 9 1 Warranty Terms 9 2 Warranty Claim 10 References 8 8 9
13. before the gain correction How to Obtain a Grey Reference Image In order to improve the image guality the grey reference image must meet certain demands c8 gt The detailed procedure to set the grey reference image is described in Section 1 7 e The grey reference image must be obtained at uniform illumination Use a high guality light source that delivers uniform illumination Standard illu mination will not be appropriate e When looking at the histogram of the grey reference image ideally there are no grey levels at full scale 4095 DN 12 bit All pixels that are saturated white will not be properly corrected see Fig z e Camera settings may influence the grey level Therefore the camera settings of the grey reference image must be identical with the camera settings of the image to be corrected 4 6 4 Corrected Image Offset gain and hot pixel correction can be switched on separately The following configurations are possible No correction e Offset correction only e Offset and hot pixel correction e _ Hot pixel correction only e Offset and gain correction e Offset gain and hot pixel correction In addition the black reference image and grey reference image that are currently stored in the camera RAM can be output 46 Histogram of the uncorrected grey reference image 1 T T T T T T T y T grey reference image ok AT 0 8 grey reference image too bright Kea J Relative number of
14. below mentioned standards according to the provisions of European Standards Directives e EN 61000 6 3 2001 e EN 61000 6 2 2001 e EN 61000 4 6 1996 e EN 61000 4 4 1996 e EN 61000 4 3 1996 e EN 61000 4 2 1995 e EN 55022 1994 8 4 CE compliance 8 Mechanical and Optical Considerations 94 Warranty The manufacturer alone reserves the right to recognize warranty claims 9 1 Warranty Terms The manufacturer warrants to distributor and end customer that for a period of two years from the date of the shipment from manufacturer or distributor to end customer the Warranty Period that e the product will substantially conform to the specifications set forth in the applicable documentation published by the manufacturer and accompanying said product and e the product shall be free from defects in materials and workmanship under normal use The distributor shall not make or pass on to any party any warranty or representation on behalf of the manufacturer other than or inconsistent with the above limited warranty set 9 2 Warranty Claim The above warranty does not apply to any product that has been modified or al A tered by any party other than manufacturer or for any defects caused by any use of the product in a manner for which it was not designed or by the negligence of any party other than manufacturer 95 9 Warranty 96 10 References All referenced documents can be downloaded from our
15. controlled exposure Ce This property disables LinLog and Burst trigger 76 Exposure time defined by Trigger Pulse Width is also known as Level controlled trigger Further trigger settings Trigger Delay ms Programmable delay in milliseconds between the incoming trigger edge and the start of the exposure Trigger signal active low Define the trigger signal to be active high default or active low Burst Trigger An external trigger event start a predefined number of acquisition The period time between the acquisitions can be configured Enable Burst Trigger Delay in milliseconds from the input trigger edge to the rising edge of the strobe output signal Number of Burst Triggers Set the number of burst Burst Trigger Period ms Set the time between the burst in milliseconds Burst Trigger Delay ms Set the delay of the burst trigger in milliseconds Strobe The camera generates a strobe output signal that can be used to trigger a strobe The delay pulse width and polarity can be defined by software To turn off strobe output set StrobePulseWidth to 0 Strobe Delay ms Delay in milliseconds from the input trigger edge to the rising edge of the strobe output signal Strobe Pulse Width ms The pulse width of the strobe trigger in milliseconds Strobe signal active low Define the strobe output to be active high default or active low 7 1 MV1 D1024E 160 77 7 Graphical User Interface GUI 7 1 4 D
16. e asubminiature connector for the power supply 7 pin Binder series 712 The connectors are located on the back of the camera Fig 5 7 shows the plugs and the status LED which indicates camera operation Power Supply Connector N CameraLink Connector Status LED Figure 5 1 Rear view of the CameraLink camera The CameraLink interface and connector are specified in CL For further details including the pinout please refer to Appendix Appendix Al This connector is used to transmit configuration image data and trigger signals 5 1 2 Power Supply The camera requires a single voltage input see Table 3 4 The camera meets all performance specifications using standard switching power supplies although well regulated linear power supplies provide optimum performance It is extremely important that you apply the appropriate voltages to your camera Incorrect voltages will damage the camera For further details including the pinout please refer to Appendix Appendix A 63 5 Hardware Interface 5 1 3 Trigger and Strobe Signals The power connector contains an external trigger input and a strobe output The trigger input is equipped with a constant current diode which limits the current of the optocoupler over a wide range of voltages Trigger signals can AN thus directly get connected with the input pin and there is no need for a current limiting resistor that depends with its value on the input voltage The input volt
17. is defined by the ROI settings The maximum frame rate in MROI mode depends on the number of rows and columns being read out Overlapping ROls are not allowed and no row must be read out more than once The individual ROI in a MROI must not overlap and no row should be included in more than one ROI Fig 4 17 compares ROI and MROI the setups visualized on the image sensor area are displayed in the upper half of the drawing The lower half shows the dimensions of the resulting image On the left hand side an example of ROI is shown and on the right hand side an example of MROI It can be readily seen that the resulting image with MROI is smaller than the resulting image with ROI only and the former will result in an increase in image frame rate 0 0 lt ROI W gt 0 0 lt ROI W gt ROLY A ea edie cs roto Wee MROI 0 vs ROI MROI1 Y 4223 de MROI 1 5 v LI I mus MROI 2 tS Wo EA AE 0 0 ROLW 0 0 ROI W gt Ty lt gt 9 MROI 0 a S En E MROI 1 9 ROI S 23 MROI 2 M Figure 4 17 Multiple Regions of Interest 4 3 Reduction of Image Size 29 4 Functionality Fig 4 18 shows another MROI drawing illustrating the effect of MROI on the image content x W Figure 4 18 Multiple Regions of Interest with 5 ROIs 30 4 3 3 Decimation Decimation reduces the number
18. of one image In Burst Trigger Mode however a trigger pulse starts the exposure of a user defined number of images see Section 4 4 5 The start of the exposure is shortly after the active edge of the incoming trigger An additional trigger delay can be applied that delays the start of the exposure by a user defined time see Section This often used to start the exposure after the trigger to a flash lighting source 4 4 2 Trigger Source The trigger signal can be configured to be active high or active low One of the following trigger sources can be used Free running The trigger is generated internally by the camera Exposure starts immediately after the camera is ready and the maximal possible frame rate is attained if Constant Frame Rate mode is disabled In Constant Frame Rate mode exposure starts after a user specified time Frame Time has elapsed from the previous exposure start and therefore the frame rate is set to a user defined value Interface Trigger In the interface trigger mode the trigger signal is applied to the camera by the CameraLink interface Fig shows a diagram of the interface trigger setup The trigger is generated by the frame grabber board and sent on the CC1 signal through the CameraLink interface Some frame grabbers allow the connection external trigger devices through an I O card A schematic diagram of this setup is shown in Fig I O Trigger In the I O trigger mode the trigger signal is applied directly
19. of pixels in y direction Decimation in y direction transfers every n row only and directly results in reduced read out time and higher frame rate respectively Decimation can also be used together with ROI or MROI In this case every ROI E should have a height that is a multiple of the decimation setting E g if decima tion 3 then the height of every ROI should be a multiple of 3 Fig 4 19 shows decimation on the full image The rows that will be read out are marked by red lines Row 0 is read out and then every nt row 0 0 E Oo Y Figure 4 19 Decimation in full image Fig shows decimation on a ROI The row specified by the Window Y setting is first read out and then every nt row until the end of the ROI Fig 4 21 shows decimation and MROI For every MROI region m the first row read out is the row specified by the MROI lt m gt Y setting and then every nt row until the end of MROI region m 4 3 Reduction of Image Size 31 4 Functionality 0 0 a 7 Yo Figure 4 20 Decimation and ROI 0 0 ROI MROI 0 x max Y max Figure 4 21 Decimation and MROI 32 The image in Fig on the right hand side shows the result of decimation 3 of the image on the left hand side Figure 4 22 Image example of decimation 3 An example of a high speed measurement of the elongation of an injection needle is given in Fig In this application the height in
20. of the distributor nearest you and contacts to our key account managers can be found at www photonfocus com 1 4 Further information Photonfocus reserves the right to make changes to its products and documenta amp tion without notice Photonfocus products are neither intended nor certified for use in life support systems or in other critical systems The use of Photonfocus products in such applications is prohibited Photonfocus is a trademark and LinLog is a registered trademark of Photonfo amp cus AG CameraLink and GigE Vision are a registered mark of the Automated Imaging Association Product and company names mentioned herein are trade marks or trade names of their respective companies 1 Preface gt Reproduction of this manual in whole or in part by any means is prohibited without prior permission having been obtained from Photonfocus AG cs Photonfocus can not be held responsible for any technical or typographical er rors 1 5 Legend In this documentation the reader s attention is drawn to the following icons CS Important note lt gt Alerts and additional information A Attention critical warning G Notification user guide How to get started CameraLink The following items are required to operate your Photonfocus CameraLink camera PC Suitable CameraLink frame grabber card to be installed in the PC All Photonfocus CameraLink cameras are fully compatible with the Camer
21. to the camera by the power supply connector via an optocoupler A setup of this mode is shown in Fig The electrical interface of the I O trigger input and the strobe output is described in Section 5 1 3 34 Machine Vision System PC Camera CameraLink Frame Grabber EXSYNC CC1 Softtrigger lt Data CameraLink Figure 4 24 Interface trigger source Machine Vision System PC Camera 1 CameraLink Frame Grabber EXSYNC CC1 Softtrigger Mm C 2 Data CameraLink OHOL EN EX SYNC CCL Softtrigger HU Data CameraLink Trigger Source 1 0 Board Figure 4 25 Interface trigger with 2 cameras and frame grabber I O card Machine Vision Flash System PC Camera 1 CameraLink Frame Grabber Data CameraLink ULL Trigger Source Figure 4 26 I O trigger source 4 4 Trigger and Strobe 4 Functionality 4 4 3 Exposure Time Control Depending on the trigger mode the exposure time can be determined either by the camera or by the trigger signal itself Camera controlled Exposure time In this trigger mode the exposure time is defined by the camera For an active high trigger signal the camera starts the exposure with a positive trigger edge and stops it when the preprogrammed exposure time has elapsed The exposure time is defined by the software Trigger controlled Exposure time In this trigger mode the exposure time is defined by the pulse width of the trigger
22. while the camera was not ready to accept a new trigger To avoid this the Burst Period Time must be incremented so that the minimal frame time for the current settings is not violated The value of the Missed Burst Trigger Counter can be read out from a camera register Counter MissedBurstTrigger or from the status line see Section 4 10 When the Missed Trigger Counter reaches its maximal value it will not wrap around The user can reset the Missed Burst Trigger Counter 4 4 9 Strobe Output The strobe output is an opto isolated output located on the power supply connector that can be used to trigger a strobe The strobe output can be used both in free running and in trigger mode There is a programmable delay available to adjust the strobe pulse to your application The strobe output needs a separate power supply Please see Section and Fig 4 25land Fig 4 26 for more information 4 4 Trigger and Strobe 41 4 Functionality 4 5 Data Path Overview The data path is the path of the image from the output of the image sensor to the output of the camera The sequence of blocks is shown in figure Fig Image Sensor FPN Correction Digital Offset Digital Gain Y Digital Fine Gain Y Look up table LUT Y Crosshairs insertion Y Status line insertion Y Test images insertion Apply data resolution 8 10 12 bit Image output
23. 24E 160 87 7 Graphical User Interface GUI 88 Mechanical and Optical Considerations 8 1 Mechanical Interface for CameraLink Camera Models Fig 8 1 shows the mechanical drawings of the CameraLink camera models Table 8 1 summarizes model specific parameters During storage and transport the camera should be protected against vibration shock moisture and dust The original packaging protects the camera adequately from vibration and shock during storage and transport Please either retain this packaging for possible later use or dispose of it according to local regulations ii s n 45 T s 3 u h S N 174 UNC 4 rm deep IN 14 UNC Siem deep i o i 1 8xM5 7rm deep x 5 X 45 45 L T i 4 J i i i N 3 A 3 3xM2 j d N3x M2 31 5 H 8 x M5 Im deep Figure 8 1 Mechanical dimensions of the CameraLink model with or without C Mount adapter All values are in mm MV1 D1024E 160 CL X housing depth 40 mm Table 8 1 Model specific parameters 89 8 Mechanical and Optical Considerations 8 2 Adjusting the Back Focus The back focus of your Photonfocus camera is correctly adjusted in the production of the camera This sectio
24. 4 6 2 Offset Correction FPN Hot Pixels The offset correction is based on a black reference image which is taken at no illumination e g lens aperture completely closed The black reference image contains the fixed pattern noise of the sensor which can be subtracted from the live images in order to minimise the static noise Offset correction algorithm After configuring the camera with a black reference image the camera is ready to apply the offset correction Determine the average value of the black reference image Subtract the black reference image from the average value Mark pixels that have a grey level higher than 1008 DN 12 bit as hot pixels Store the result in the camera as the offset correction matrix U e WwW P 2 During image acquisition subtract the correction matrix from the acquired image and interpolate the hot pixels see Section 4 6 2 4 6 Image Correction 43 4 Functionality E 1 v average 1 2 0 0 TF 2 4 of black IL a gt picture tt p black reference N offset correction image matrix Figure 4 31 Schematic presentation of the offset correction algorithm How to Obtain a Black Reference Image In order to improve the image guality the black reference image must meet certain demands gt The detailed procedure to set the black reference image is described in Section 7 17 e The black reference image must be obtained at no illuminat
25. B port More information about these DLLs is available in the SDK documentation SW002 6 5 Graphical User Interface GUI PFRemote consists of a main window Fig and a configuration dialog In the main window the camera port can be opened or closed and log messages are displayed at the bottom The configuration dialog appears as a sub window as soon as a camera port was opened successfully In the sub window of PFRemote the user can configure the camera properties The following sections describe the general structure of PFRemote 6 5 1 Port Browser On start PFRemote displays a list of available communication ports in the main window PFRemote 2 0 ioj xj File Help E BitFlow Inc amp Coreco Imaging E National Instruments clser dll at PFRemote directory USB amp RS 232 Figure 6 2 PFRemote main window with PortBrowser and log messages To open a camera on a specific port double click on the port name e g USB Alternatively right click on the port name and choose Open amp Configure The port is then gueried for a compatible Photonfocus camera In the PFRemote main window there are two menus with the following entries available 68 File Menu Clear Log Clears the log file buffer Quit Exit the program Help Menu About Copyright notice and version information Help F1 Invoke the online help PFRemote documentation 6 5 2 Ports Device Initialization After starting PFRemote
26. FLib As shown in Fig 6 1 the camera parameters can be controlled by PFRemote and PFLib respectively To grab an image use the software or the SDK that was delivered with your frame grabber Frame Grabber Grabber Figure 6 1 PFRemote and PFLib in context with the CameraLink frame grabber software 6 3 Operating System The PFRemote GUI is available for Windows OS only For Linux or QNX operating systems we provide the necessary libraries to control the camera on request but there is no graphical user interface available amp If you require support for Linux or QNX operating systems you may contact us for details of support conditions 67 6 The PFRemote Control Tool 6 4 Installation Notes Before installing the required software with the PFInstaller make sure that your frame grabber software is installed correctly Several DLLs are necessary in order to be able to communicate with the cameras PFCAM DLL The main DLL file that handles camera detection switching to specific camera DLL and provides the interface for the SDK e CAMERANAME DLL Specific camera DLL e COMDLL DLL Communication DLL This COMDLL is not necessarily CameraLink specific but may depend on a CameraLink API compatible DLL which should also be provided by your frame grabber manufacturer e CLALLSERIAL DLL Interface to CameraLink frame grabber which supports the clallserial dll e CLSER USB DLL Interface to US
27. LUTO has higher priority than LUT1 Region LUT Both LUTs can be configured with ROI values The LUT only modifies the pixel values inside its ROI Overlapping is possible LUTO has higher priority LUTO LUT 1 Enable LUT 0 Enable LUT 1 LUTO can be configured with the built in Gain Gamma Functions or with a file LUT1 can be configured with the built in Gain Gamma Functions or with a file Mode Mode O cain O Gamma Gan O Gamma value 3 0000 value 3 0000 Region LUT Enable Region LUT Region of LUT O Region of LUT 1 Y ihoa Correction Info Store as Defaults Settings File LUT Files LUT contents can be loaded from Factory Reset saved to file First select the LUT to load save Frame Rate fps wo Load LUT from File Load File Update Average Value Save LUT to File Note After loading camera configuration from an ini File the LUTs are programmed Update with the built in Gain Gamma Functions In this case please reload the LUT file Note Gain Function y 256 4096 value x value 1 4 Gamma Function y 256 4096 value xvalue value 0 4 4 Figure 7 6 LUT panel Grey level transformation is remapping of the grey level values of an input image to new values which transform the image in some way The look up table LUT is used to convert the greyscale value of each pixel in an image into another grey value It is typica
28. Level controlled trigger and Interleave Average Value a r Ber Level controlled trigger and LinLog Nr of Burst Triggers Burst Trigger Delay ms Level controlled trigger and Burst trigger Normal trigger mode An external trigger event Burst trigger mode An external trigger event starts a predefined number of acquisitions starts one acquisition The period time between the acquisitions can be configured Interface or p Burst Trigger gt O Trigger Dela z Interface or El H i Exposure WO Trigger i i D h H e 3 Exposure time i gt Burst Trigger Period i H H Trigger Delay eae Er a ja A I ja k KIT feq 0 i feq 1 feq 2 Aoq n 1 H d 4 E gt Exposure time n Nr of Burst Triggers i Trigger Delay TE Strobe t H Strobe Pulse Width Peg ert In le Strobe Delay Se ae A H H Strobe Pulse Width gt 73 i gt Strobe Delay Figure 7 4 Trigger panel Trigger Trigger Source Free running The camera continuously delivers images with a certain configurable frame rate Interface Trigger The Trigger signal is applied to the camera by the Cameralink frame grabber I O Trigger The trigger signal is applied directly to the camera on the power supply connector Exposure time defined by Camera The exposure time is defined by the property ExposureTime Trigger Pulse Width The exposure time is defined by the pulse width of the trigger signal level
29. Please make sure the following items are included with your camera Power supply connector 7 pole power plug e Camera body cap If any items are missing or damaged please contact your dealership Remove the camera body cap from the camera and mount a suitable lens should always be held with the opening facing downwards to prevent dust or When removing the camera body cap or when changing the lens the camera debris falling onto the CMOS sensor Do not touch the sensor surface Protect the image sensor from particles and dirt 2 How to get started CameraLink Figure 2 1 Camera with protective cap and lens cs To choose a lens see the Lens Finder in the Support area at www photonfocus com 5 Connect the camera to the frame grabber with a suitable CameraLink cable see Fig 2 2 Figure 2 2 Camera with frame grabber power supply and cable A Do not connect or disconnect the CameraLink cable while camera power is on For more information about CameraLink see Section 4 12 6 Connect a suitable power supply to the provided 7 pole power plug For the connector assembly see Fig The pinout of the connector is shown in Appendix Appendix A 10 Check the correct supply voltage and polarity Do not exceed the maximum operating voltage of 12V DC 10 7 Connect the power supply to the camera see Fig 2 2 zB The status LED on the rear of the camera will light red for a short moment an
30. aLink standard 1 1 and later Therefore all framegrabbers complying with the standard will be compatible with Photonfocus cameras if they meet the interface and speed specifications of the cameras Note that some framegrabbers use CameraLink chipsets limited to 66 MHz pixel clocks These framegrabbers are not compatible with Photonfocus MV1 D1024E 160 CameraLink camera If you have compatibility guestions concerning your framegrabber please contact our support team via support photonfocus com Suitable CameraLink frame grabbers can be purchased from Photonfocus directly www photonfocus com in some countries CameraLink cable The cable length should not be too big for the camera The camera includes test images 4 11 to measure the transmission quality of the system CameraLink cables can be purchased from directly Photonfocus www photonfocus com in some countries A suitable power supply A suitable power supply can be purchased at your Photonfocus dealership C Mount camera lens Note that if you plan to use your NIR enhanced camera in the near infrared region NIR then you should use SWIR camera lenses Install a suitable frame grabber in your PC Install the frame grabber software Without installed frame grabber software the camera configuration tool PFRe G lt mote will not be able to communicate with the camera Please follow the in structions of the frame grabber supplier Remove the camera from its packaging
31. age to the TRIGGER pin must not exceed 15V DC to avoid damage to the internal ESD protection and the optocoupler In order to use the strobe output the internal optocoupler must be powered with 5 15 V DC The STROBE signal is an open collector output therefore the user must connect a pull up resistor see Table 5 1 to STROBE_VDD 5 15 V DC as shown in Fig This resistor should be located directly at the signal receiver Vtrigger 5 15 V DC TRIGGER Vstrobe 5 15 VDC STROBE VDD 1k STROBE Pin_5 ae siena orowo fein Figure 5 2 Circuit for the trigger input signals The maximum sink current of the STROBE pin is 8 mA Do not connect inductive A or capacitive loads such loads may result in damage of the optocoupler If the application requires this please use voltage suppressor diodes in parallel with this components to protect the optocoupler 64 STROBE_VDD Pull up Resistor 15V gt 3 9 kOhm 10 V gt 2 7 kOhm 8V gt 2 2 kOhm 7V gt 1 8 kOhm 5V gt 1 0 kOhm Table 5 1 Pull up resistor for strobe output and different voltage levels 5 1 4 Status Indicator CameraLink cameras A dual color LED on the back of the camera gives information about the current status of the CameraLink cameras LED Green Green when an image is output At slow frame rates the LED blinks with the FVAL signal At high frame rates the LED changes to an apparently continuous green light with in
32. ark up throughout this document for example ExposureTime Some properties are grouped into a structure whose member is accessed via dot notation e g Window X for the start X value of a region of interest When changing a property the property name can always be seen in the log window of the main program window 70 Graphical User Interface GUI 7 1 MV1 D1024E 160 This section describes the parameters of the following MV1 D1024E 160 CL 12 camera The following sections are grouped according to the tabs in the configuration dialog Frame Rate fps Update Average Value Update Figure 7 1 Frame rate and average value indication Frame Rate fps Shows the actual frame rate of the camera in frames per second Update To update the value of the frame rate click on this button Average Value Greyscale average of the actual image This value is in 12bit 0 4095 Update To update the value of the average click on this button 71 7 Graphical User Interface GUI 7 1 1 Exposure This tab contains exposure settings MV1 D1024E 160 boardO_portO 0 Serial 1291 LinLog Correction Info Exposure Store as Defaults Exposure time ms U Settings File F Constant Frame Rate Frame time ms Factory Reset Frame Rate fps Simultaneous readout Interleave 7 Simultaneous readout Interleave Note The camera should be recalibrated when switching between normal readout mod
33. ata Output This tab contains image data settings MV1 D1024E 160 boardO_portO O Serial 1291 Exposure Window Trigger D i i j LinLog Correction Info 1 Output Mode Output Mode Normal v Resolution Digital Gain Digitaloffset 12bit 0 E Fine Gain J Figure 7 5 Data output panel Output Mode Output Mode Normal Normal mode Store as Defaults Settings File Factory Reset Frame Rate fps Average Value LFSR Test image Linear feedback shift register pseudo random image The pattern depends on the grey level resolution Ramp Test image Values of pixel are incremented by 1 starting at each row The pattern depends on the grey level resolution Resolution 8 Bit Grey level resolution of 8 bit 10 Bit Grey level resolution of 10 bit 12 Bit Grey level resolution of 12 bit 78 Digital Gain 1x No digital gain normal mode 2x Digital gain 2 4x Digital gain 4 8x Digital gain 8 Digital Offset Substracts an offset from the data Only available in gain mode Fine Gain The fine gain can be used to adjust the brightness of the whole image in small steps 7 1 MV1 D1024E 160 79 7 Graphical User Interface GUI 7 1 5 LUT Look Up Table This tab contains LUT settings MV1 D1024E 160 boardO_portO 0 Serial 1291 Exposure Window Trigger Data Output LUT o Look Up Table LUT mapping 10 to 8 Bit This camera has 2 LUTs
34. ation Decimation reduces the number of pixels in y direction Decimation can also be used together with a ROI or MROI Decimation in y direction transfers every n th row only and directly results in reduced read out time and higher frame rate respectively Decimation Y Decimation value for y direction Example Value 3 reads every third row only Crosshairs Crosshairs is a cross inside the image The crosshairs value is overlapped the original image data The position of the crosshairs can be configured The unit of the grey value is always 12 bit Enable Crosshairs Enable crosshairs X Vertical line position of crosshairs Y Horizontal line position of crosshairs Value 12bit Crosshairs grey value in 12bit Multi ROI This camera can handle up to 512 different regions of interest The multiple ROls are joined together and form a single image which is transferred to the frame grabber A ROI is defined by its starting value in y direction and its height The width and the horizontal offset are specified by X and W settings The maximum frame rate in MROI mode depends on the number of rows and columns being read out Overlapping ROls are NOT allowed No row should be included in more than one ROI Enable MROI Enable MROI If MROI is enabled the ROI and MROI settings cannot be changed Load File Load a user defined MROI file into the camera A sample MROI configuration file mv1_d1024e_160_mroi txt with description of th
35. by the connectors or by the frame grabber A possible origin of failure message can be caused by the CameraLink cable which exceeds the maximum length The maximal cable length depends on the O freguency of the pixel clock At a pixel clock of 80 MHz a length of 8 m can be achieved with a good cable Also CameraLink cables may suffer either from stress due to wrong installation or from severe electromagnetic interference 4 11 Test Images 59 4 Functionality Some thinner CameraLink cables have a predefined direction In these cables lt gt not all twisted pairs are separately shielded to meet the RS644 standard These pairs are used for the transmission of the RX TX and for the CC1 to CC4 low frequency control signals MM Histogramm Port A Picture 32620 MM Histogramm Port A Picture 32620 Port A Picture 620 127 255 Figure 4 50 LFSR test pattern received at the frame grabber and typical histogram for error free data transmission M Histogramm Port APicture M Histogramm Port APicture Port A Picture 440 N AN syy 255 Figure 4 51 LFSR test pattern received at the frame grabber and histogram containing transmission errors CameraLink cables contain wire pairs which are twisted in such a way that the CD cable impedance matches with the LVDS driver and receiver impedance Excess stress on the cable results in transmission errors which causes distorted images Therefore please do not stret
36. ch and bend a CameraLink cable In robots applications the stress that is applied to the CameraLink cable is especially high due to the fast movement of the robot arm For such applications special drag chain capable cables are available Please contact the Photonfocus Support for consulting expertise Appropriate CameraLink cable solutions are available from Photonfocus 4 12 Configuration Interface CameraLink A CameraLink camera can be controlled by the user via a RS232 compatible asynchronous serial interface This interface is contained within the CameraLink interface as shown in Fig 4 52 and is physically not directly accessible Instead the serial communication is usually routed through the frame grabber For some frame grabbers it might be necessary to connect a serial cable from the frame grabber to the serial interface of the PC Image data FVAL LVAL DVAL Pixel Clock Cameralink Cameralink CC Signals Serial Interface Figure 4 52 CameraLink serial interface for camera communication 4 12 Configuration Interface CameraLink 61 4 Functionality 62 Hardware Interface 5 1 Connectors 5 1 1 CameraLink Connector The CameraLink cameras are interfaced to external components via e aCameralink connector which is defined by the CameraLink standard as a 26 pin 0 5 Mini Delta Ribbon MDR connector to transmit configuration image data and trigger
37. d then flash green For more information see Section 8 Download the camera software PFRemote to your computer c8 gt You can find the latest version of PFRemote on the support page at www photonfocus com 9 Install the camera software PFRemote Please follow the instructions of the PFRemote setup wizard 115 Setup PFRemote and SDK 5 xj Welcome to the PFRemote and SDK Setup Wizard This will install PFRemote on your computer It is recommended that you close all other applications before continuing Click Next to continue or Cancel to exit Setup Cancel www photonfocus com Figure 2 3 Screen shot PFremote setup wizard 10 Start the camera software PFRemote and choose the communication port 11 Check the status LED on the rear of the camera DI The status LED lights green when an image is being produced and it is red when serial communication is active For more information see Section 12 You may display images using the software that is provided by the frame grabber manufacturer 11 2 How to get started CameraLink PFRemote 2 40 EX MV1 D1024E 160 boardo porto O Seria File Help Ports Silicon Software MY1 D1024E 160 boardo porti 1 USB E RS 232 USB lt gt Serial 14 04 26 Opening device on port boardo port0 0 14 04 28 Baud rate 921600 14 04 28 Device opened on port boardO_portO 0 Figure 2 4 PFRemote start window 12 Exposure window Trigg
38. e Camera Control CC signals as used by Photonfocus Pixel clock The pixel clock is generated on the camera and is provided to the frame grabber for synchronisation 5 1 Connectors 65 5 Hardware Interface Serial communication A CameraLink camera can be controlled by the user via a RS232 compatible asynchronous serial interface This interface is contained within the CameraLink interface and is physically not directly accessible Refer to Section 4 12 for more information Image data FVAL LVAL DVAL Pixel Clock Cameralink Cameralink CC Signals gt Serial Interface Figure 5 3 CameraLink interface system The frame grabber needs to be configured with the proper tap and resolution settings otherwise the image will be distorted or not displayed with the correct aspect ratio Refer to Table 3 3 and to Section 3 6 for a summary of frame grabber relevant specifications Fig shows symbolically a CameraLink system For more information about taps refer to the relevant application note AN021 on the Photonfocus website 66 6 The PFRemote Control Tool 6 1 Overview PFRemote is a graphical configuration tool for Photonfocus cameras The latest release can be downloaded from the support area of www photonfocus com All Photonfocus cameras can be either configured by PFRemote or they can be programmed with custom software using the PFLib SDK PFLIB 6 2 PFRemote and P
39. e Update and simultaneous readout mode Note For limitation of the simultaneous readout mode please refer to the manual Average Value Combination of Interleave and Skim is not available Combination of Interleave and LevelControlled trigger is not available Figure 7 2 Exposure panel Exposure Exposure time ms Configure the exposure time in milliseconds Constant Frame Rate When the Constant Frame Rate CFR is switched on the frame rate number of frames per second can be varied from almost O up to the maximum frame rate Thus fewer images can be acguired than would otherwise be possible When Constant Frame Rate is switched off the camera delivers images as fast as possible depending on the exposure time and the read out time Frame time ms Configure the frame time in milliseconds Only available if Constant Frame Rate is enabled The minimum frame time depends on the exposure time and readout time 72 Simultaneous readout Interleave The simultaneous readout mode allows higher frame rate Simultaneous readout Interleave Enable the simultaneous readout mode Combination of property Trigger Interleave and property LinLog Mode is Ce not available Combination of property Trigger Interleave and property Trigger LevelControlled is not available Combination of property Trig ger Interleave and property Trigger EnBurstTrigger is not available 7 1 MV1 D1024E 160 73 7 Graphical User Interface GUI 7
40. e data format is available in the directory MROI files located in the PFRemote installation directory Save File Save the current MROI settings to a txt file Index Select one of the 512 MROI Y Y coordinate of the current MROI selected by Index H Height of the current MROI selected by Index H tot Shows the sum of all MROls as the total image height Settings for frame grabber Shows the ROI settings on the camera interface Use these settings to configure the frame grabber Wtot Number of pixels in a line Width of the image Htot Number of lines out of the camera Height of the image Update Update values of Wtot and Htot 7 1 MV1 D1024E 160 75 7 Graphical User Interface GUI 7 1 3 Trigger This tab contains trigger and strobe settings MV1 D1024E 160 boardO_portO O Serial 1291 Exposure Window Trigger LinLog Correction Info Trigger Strobe Store as Defaults Mode Strobe Delay ms 0 0000 Settings File Free running O Interface Trigger 1 0 Trigger Strobe Pulse width ms 1 0000 Exposure time defined by Exposure time defined by C Strobe signal active low Trigger Pulse Width is also Factory Reset known as Level controlled trigger Frame Rate fps Trigger Delay ms Burst Trigger Note For limitations of the Level controlled trigger Update o please refer to the manual Burst Trigger Period ms The following combinations are not available el ms A
41. e1 250 200 150 100 Output grey level 8 bit DN 50 Illumination Intensity Figure 4 9 Response curve for different LinLog settings in LinLog1 mode 4 2 Pixel Response 23 Vi 15 Vi 16 Vi 17 Vi 18 Vi 19 4 Functionality LinLog2 To get more grey resolution in the LinLog mode the LinLog2 procedure was developed In LinLog2 mode a switching between two different logarithmic compressions occurs during the exposure time see Fig 4 10 The exposure starts with strong compression with a high LinLog voltage Valuel At Timel the LinLog voltage is switched to a lower voltage resulting in a weaker compression This procedure gives a LinLog response curve with more grey resolution Fig 4 11 and Fig 4 12 show how the response curve is controlled by the three parameters Valuel Value2 and the LinLog time Tinel CE Settings in LinLog2 mode enable a fine tuning of the slope in the logarithmic region LinLog exp Value1 Value2 m A 0 Time1 Time2 max 1000 t Figure 4 10 Voltage switching in the Linlog2 mode Typical LinLog2 Response Curve Varying Parameter Time1 Time2 1000 Value1 19 Value2 14 300 T T T T T T1 840 250 T1 920 T1 960 200 T1 980 T1 999 150 100 Output grey level 8 bit DN 50 0 i l Illumination Intensity Figure 4 11 Response curve for different LinLog settings in LinLog2 mode 24 Typical LinLog2 Res
42. ed There is an example file mv1_d1024e_160_lut txt in the directory LUT files located in the PFRemote installation directory Save File Save LUT from camera into a file 7 1 MV1 D1024E 160 81 7 Graphical User Interface GUI 7 1 6 LinLog This tab contains LinLog and Skimming settings MV1 D1024E 160 boardO_portO O Serial 1291 218 vers Tipper Date ouija Jar correction Jo LinLog Store as Defaults LinLog mode Off Settings File Valuel Value2 Factory Reset T E Frame Rate fps Note For limitations of LinLog please refer to the manual Combination of LinLog and Interleave is not available Average Value Compression Value Value2 _ Yalue3 Constant 0 t texp Skimming Figure 7 7 Linlog panel LinLog The LinLog technology from Photonfocus allows a logarithmic compression of high light intensities In contrast to the classical non integrating logarithmic pixel the LinLog pixel is an integrating pixel with global shutter and the possibility to control the transition between linear and logarithmic mode See also the corresponding section in the camera manual There are 3 predefined LinLog settings available Alternatively custom settings can be defined in the User defined Mode LinLog Mode Off LinLog is disabled Low Normal High compression Three LinLog presettings User defined Valuel Timel Value and Time2 The Linlog times are per thousa
43. er Data Output LUT Exposure Exposure time ms J 1 4 Cl Constant Frame Rate Frame time ms 1 541 Simultaneous readout Interleave Simultaneous readout Interleave Note The camera should be recalibrated when swi and simultaneous readout mode Note For limitation of the simultaneous readout mo Combination of Interleave and Skim is not av Combination of Interleave and LevelControlle Product Specification 3 1 Introduction The MV1 D1024E CL CMOS camera series from Photonfocus is aimed at demanding applications in industrial image processing It provides an exceptionally high dynamic range of up to 120 dB at a resolution of 1024 x 1024 pixels The cameras are built around a monochrome CMOS image sensor developed by Photonfocus The principal advantages are Resolution of 1024 x 1024 pixels Spectral sensitivity from 400 nm to 900 nm Superior signal to noise ratio SNR Low power consumption at high speeds Very high resistance to blooming Extremely high image contrast achieved by LinLog technology Ideal for high speed applications global shutter Maximal frame rate at full resolution 150 fps Greyscale resolution of up to 12 bit On camera shading correction Up to 512 regions of interest MRO 2 look up tables 12 to 8 bit on user defined image region Region LUT Crosshairs overlay on the image Image information and camera settings inside the image s
44. er of tjitter The pulse can be delayed by the time tirigger delay Which can be configured by a user defined value via camera software The trigger offset delay 36 tirigger offset results then from the synchronous design of the FPGA state machines and from to requirement to start an exposure at a fixed point from the start of the read out of a row The exposure time texposure Is controlled with an internal exposure time controller The trigger pulse from the internal camera control starts also the strobe control state machines The strobe can be delayed by tstrobe delay With an internal counter which can be controlled by the customer via software settings The strobe offset delay tstrobe delay results then from the synchronous design of the FPGA state machines A second counter determines the strobe duration tstrobe duration Strobe duration For a robust system design the strobe output is also isolated from the camera electronic which leads to an additional delay of ta iso output Table 4 4 gives an overview over the minimum and maximum values of the parameters External Trigger with Pulsewidth controlled Exposure Time In the external trigger mode with Pulsewidth controlled exposure time the rising edge of the trigger pulse starts the camera states machine which controls the sensor The falling edge of the trigger pulse stops the image acquisition Additionally the optional external strobe output is controlled by the rising edge of the tr
45. er the trigger offset time tirigger offset the exposure is stopped In the trigger pulse width controlled exposure mode the image sensor operates CO in seguential read out mode see Section 4 1 1 The maximal frame rate is there fore lower than normal as the exposure start is only allowed after the read out of the previous frame 4 4 4 Trigger Delay The trigger delay is a programmable delay in milliseconds between the incoming trigger edge and the start of the exposure This feature may be required to synchronize to external strobe with the exposure of the camera 4 4 5 Burst Trigger The camera includes a burst trigger engine When enabled it starts a predefined number of acquisitions after one single trigger pulse The time between two acquisitions and the number of acquisitions can be configured by a user defined value via the camera software The burst trigger feature works only in the mode Camera controlled Exposure Time The burst trigger signal can be configured to be active high or active low When the frequency of the incoming burst triggers is higher than the duration of the programmed burst sequence then some trigger pulses will be missed A missed burst trigger counter counts these events This counter can be read out by the user The timing diagram of the burst trigger mode is shown in Fig 4 29 The timing of the external trigger pulse input until to the trigger pulse internal camera control is equal to the timing i
46. formation is less important than the width information Applying decimation 2 on the original image on the left hand side doubles the resulting frame rate ROI without decimation ROI with decimation Figure 4 23 Example of decimation 2 on image of injection needle 4 3 Reduction of Image Size 33 4 Functionality 4 4 Trigger and Strobe 4 4 1 Introduction The start of the exposure of the camera s image sensor is controlled by the trigger The trigger can either be generated internally by the camera free running trigger mode or by an external device external trigger mode This section refers to the external trigger mode if not otherwise specified In external trigger mode the trigger can be applied through the CameraLink interface interface trigger or directly by the power supply connector of the camera I O Trigger see Section 4 4 2 The trigger signal can be configured to be active high or active low When the frequency of the incoming triggers is higher than the maximal frame rate of the current camera settings then some trigger pulses will be missed A missed trigger counter counts these events This counter can be read out by the user The exposure time in external trigger mode can be defined by the setting of the exposure time register camera controlled exposure mode or by the width of the incoming trigger pulse trigger controlled exposure mode see Section 4 4 3 An external trigger pulse starts the exposure
47. g provides an adjustable level of in pixel gain for low signal levels It can be used together with LinLog to give a smooth monotonic transfer function from high gain at low levels through normal linear operation to logarithmic compression for high signal levels see Fig 4 15 The resulting response is similar to a gamma correction Grey Value Saturation 100 Cd o LA o Linear Response Skimming Light Intensity Figure 4 15 Response curve for different skimming settings 26 4 3 Reduction of Image Size With Photonfocus cameras there are several possibilities to focus on the interesting parts of an image thus reducing the data rate and increasing the frame rate The most commonly used feature is Region of Interest ROI 4 3 1 Region of Interest ROI Some applications do not need full image resolution e g 1024x1024 pixels By reducing the image size to a certain region of interest ROI the frame rate can be drastically increased A region of interest can be almost any rectangular window and is specified by its position within the full frame and its width and height Fig 4 16 gives some possible configurations for a region of interest and Table 4 2 shows some numerical examples of how the frame rate can be increased by reducing the ROI Table 4 3 shows the frame rate as a function of the read out mode and the exposure time CS Both reductions in x and y direction result in a higher frame rate
48. gamma gt 1 Grey level transformation Gamma y 255 1023 x y lt 1 300 T T T T T 250 200 150 100 y grey level output value 8 bit DN 50 0 N N N 0 200 400 600 800 1000 1200 x grey level input value 10 bit DN Applying gamma correction to an image gamma lt 1 4 8 3 User defined Look up Table In the User mode the mapping of input to output grey levels can be configured arbitrarily by the user There is an example file in the PFRemote folder LUT files can easily be generated with a standard spreadsheet tool The file has to be stored as tab delimited text file User LUT y f x 12 bit 8 bit Figure 4 41 Data path through LUT 4 8 4 Region LUT and LUT Enable Two LUTs and a Region LUT feature are available in the Photonfocus MV1 D1024E camera series Both LUTs can be enabled independently see Table 4 6 LUT O superseeds LUT1 Enable LUT 0 Enable LUT 1 Enable Region LUT Description LUT are disabled x don t care LUT 0 is active on whole image LUT 1 is active on whole image X LUT 0 active in Region 0 x LUT 0 active in Region 0 and LUT 1 active in Region 1 LUT 0 supersedes LUT1 Table 4 6 LUT Enable and Region LUT When Region LUT feature is enabled then the LUTs are only active in a user defined region Examples are shown in Fig 4 42land Fig Fig 4 42 shows an example of overlapping
49. h increasing grey level from the left to the right side see Fig 3 Figure 4 48 Ramp test images 8 bit left 10 bit middle 12 bit right 4 11 2 LFSR The LFSR linear feedback shift register test image outputs a constant pattern with a pseudo random grey level sequence containing every possible grey level that is repeated for every row The LFSR test pattern was chosen because it leads to a very high data toggling rate which stresses the interface electronic and the cable connection In the histogram you can see that the number of pixels of all grey values are the same Please refer to application note AN026 for the calculation and the values of the LFSR test image 58 Figure 4 49 LFSR linear feedback shift register test image 4 11 3 Troubleshooting using the LFSR To control the quality of your complete imaging system enable the LFSR mode set the camera window to a width that is a multiple of 1024 and check the histogram If your frame grabber application does not provide a real time histogram store the image and use a graphic software tool to display the histogram In the LFSR linear feedback shift register mode the camera generates a constant pseudo random test pattern containing all grey levels If the data transmission is error free the histogram of the received LFSR test pattern will be flat Fig 4 50 On the other hand a non flat histogram Fig indicates problems that may be caused either by the cable
50. he frame time property Thus fewer images can be acquired than would otherwise be possible When Constant Frame Rate is switched off the camera delivers images as fast as possible depending on the exposure time and the read out time lt gt Constant Frame Rate mode CFR is not available together with external trigger mode 4 2 Pixel Response 4 2 1 Linear Response The camera offers a linear response between input light signal and output grey level This can be modified by the use of LinLog or Skimming as described in the following sections In addition a linear digital gain may be applied see Section 4 7 4 2 Pixel Response 21 4 Functionality Black Level Adjustment The black level is the average image value at no light intensity It can be adjusted by the software by changing the black level offset Thus the overall image gets brighter or darker Use a histogram to control the settings of the black level 4 2 2 LinLog Overview The LinLog technology from Photonfocus allows a logarithmic compression of high light intensities inside the pixel In contrast to the classical non integrating logarithmic pixel the LinLog pixel is an integrating pixel with global shutter and the possibility to control the transition between linear and logarithmic mode In situations involving high intrascene contrast acompression of the upper grey level region can be achieved with the LinLog technology At low intensities each pixel s
51. hows a linear response At high intensities the response changes to logarithmic compression see Fig 4 7 The transition region between linear and logarithmic response can be smoothly adjusted by software and is continuously differentiable and monotonic Grey Value 100 Linear Weak compression Response Resulting Linlog Response 0 Value2 Light Intensity Figure 4 7 Resulting LinLog2 response curve LinLog is controlled by up to 4 parameters Timel Time2 Valuel and Value2 Valuel and Value2 correspond to the LinLog voltage that is applied to the sensor The higher the parameters Valuel and Value2 respectively the stronger the compression for the high light intensities Timel and Time2 are normalised to the exposure time They can be set to a maximum value of 1000 which corresponds to the exposure time Examples in the following sections illustrate the LinLog feature LinLog1 In the simplest way the pixels are operated with a constant LinLog voltage which defines the knee point of the transition This procedure has the drawback that the linear response curve 22 changes directly to a logarithmic curve leading to a poor grey resolution in the logarithmic region see Fig 4 9 Value1 Value2 exp Time1 Time2 max t 1000 Figure 4 8 Constant LinLog voltage in the Linlog1 mode 300 Typical LinLogi Response Curve Varying Parameter Value1 Time1 1000 Time2 1000 Value2 Valu
52. igger pulse Timing diagram Fig 4 28 shows the detailed timing for the external trigger mode with pulse width controlled exposure time t external trigger pulse input exposure trigger after isolator trigger pulse rising edge camera control t jitter l delayed trigger rising edge for shutter set t trigger delay trigger pulse falling edge camera control t jitter delayed trigger falling edge shutter reset le Uriggerdeiay t internal shutter control trigger offset t exposure S S 1 delayed trigger for strobe control t strobe delay internal strobe control t t strobe offset strobe duration external strobe pulse output t d iso output Figure 4 28 Timing diagram for the Pulsewidth controlled exposure time The timing of the rising edge of the trigger pulse until to the start of exposure and strobe is equal to the timing of the camera controlled exposure time see Section 4 4 3 In this mode however the end of the exposure is controlled by the falling edge of the trigger Pulsewidth 4 4 Trigger and Strobe 37 4 Functionality The falling edge of the trigger pulse is delayed by the time ta iso input Which results from the signal isolator This signal is clocked into the FPGA which leads to a jitter of tjitter The pulse is then delayed by tirigger delay by the user defined value which can be configured via camera software Aft
53. ility of a specific camera model on our website www photonfocus com MV1 D1024E 160 CL 12 1024 x 1024 150 fps no Table 3 2 Available Photonfocus MV1 D1024E CL camera models Footnotes frame rate at at full reso lution 3 4 Difference to legacy MV D1024E series The MV1 D1024E 160 CL 12 is a direct replacement of the MV D1024E 160 12 camera The housing and the pinout of the power connector and the CameraLink are identical The release of the MV1 D1024E 160 camera was required due to the non availability of some electronic components The new MV1 D1024E 160 camera has some features not found in the legacy MV 1024E 160 camera e Number of MROI increased to 512 e Enhanced trigger features burst trigger see Section 4 4 5 e Gain correction is improved e Finer gain control through FineGain feature see Section 4 7 e 2 LUT instead of one and RegionLUT feature see Section 4 8 Crosshairs overlay see 4 9 e More data fields in the status line see Section 4 10 2 3 3 Available Camera Models 15 3 Product Specification 3 5 Technical Specification Technology Scanning system MV1 D1024E 160 CL CMOS active pixel progressive scan Optical format diagonal 1 15 42 mm Resolution Pixel size 1024 x 1024 pixels 10 6 um x 10 6 um Active optical area Random noise 10 9 mm x 10 9 mm lt 0 5 DN RMS 8 bit gain 1 Fixed pattern noise FPN lt 1 DN RMS 8 b
54. ion e g with lens aperture closed or closed lens opening e t may be necessary to adjust the black level offset of the camera In the histogram of the black reference image ideally there are no grey levels at value O DN after adjustment of the black level offset All pixels that are saturated black 0 DN will not be properly corrected see Fig 4 32 The peak in the histogram should be well below the hot pixel threshold of 1008 DN 12 bit e Camera settings may influence the grey level Therefore for best results the camera settings of the black reference image must be identical with the camera settings of the image to be corrected Histogram of the uncorrected black reference image T T T T T T black level offset ok black level offset too low Relative number of pixels 600 800 1000 Grey level 12 Bit DN 1200 1400 1600 Figure 4 32 Histogram of a proper black reference image for offset correction 44 Hot pixel correction Every pixel that exceeds a certain threshold in the black reference image is marked as a hot pixel If the hot pixel correction is switched on the camera replaces the value of a hot pixel by an average of its neighbour pixels see Fig Prat Ph _ gt 2 hot pixel f Pn 1 Pn Ph Figure 4 33 Hot pixel interpolation 4 6 3 Gain Correction The gain correction is based on a grey reference image which is taken at uniform i
55. it gain 1 offset correction on Dark current Full well capacity 2 fA pixel 30 C 200 ke Spectral range 400 nm 900 nm Responsivity 120 x 10 DN J m 610 nm 8 bit gain 1 Optical fill factor 35 Dynamic range up to 120 dB with LinLog Colour format monochrome Characteristic curve Linear LinLog Skimming Shutter mode Greyscale Resolution global shutter 12 bit 10 bit 8 bit Exposure Time 10 us 0 41 s Exposure Time Increment 25 ns Frame Rate T n 10 us 150 fps Pixel Clock Frequency 80 MHz Camera Taps 2 Read out mode sequential or simultaneous Table 3 3 General specification of the MV1 D1024E 160 CL camera 16 MV1 D1024E 160 CL Operating temperature 0 C 50 C 25 C 60 C 20 95 12 V DC 10 Storage temperature moisture Camera power supply Trigger signal input range 5 15 VDC Max power consumption 4 0 W Lens mount C Mount CS Mount optional Dimensions 55 x 55 x 40 mm Mass 2109 Conformity CE RoHS WEEE Table 3 4 Physical characteristics and operating ranges Quantum Efficiency vs Wavelength Quantum Efficiency o N uo 200 300 400 500 600 700 800 900 1000 1100 Wavelength nm Figure 3 2 Spectral response of the A1024B CMOS sensor 3 5 Technical Specification 3 Prod
56. l is to describe what can be done with the camera The setup of the cameras is explained in later chapters 4 1 Image Acquisition 4 1 1 Readout Modes The MV1 D1024E CameraLink series provides two different readout modes Sequential readout Frame time is the sum of exposure time and readout time Exposure time of the next image can only start if the readout time of the current image is finished Simultaneous readout interleave The frame time is determined by the maximum of the exposure time or of the readout time which ever of both is the longer one Exposure time of the next image can start during the readout time of the current image MV1 D1024E 160 CL Sequential readout available Simultaneous readout available Table 4 1 Available readout mode of MV1 D1024E 160 CL camera The following figure illustrates the effect on the frame rate when using either the sequential readout mode or the simultaneous readout mode interleave exposure fps 1 readout time Frame rate fps Simultaneous readout mode a Sequential nn readout mode TTO fps 1 readout time exposure time exposure time lt readout time exposure time gt readout time exposure time readout time A Exposure time Figure 4 1 Frame rate in sequential readout mode and simultaneous readout mode 19 4 Functionality Sequential readout mode For the calculation of the frame rate
57. l it gets a signal to capture an image exposure read out idle exposure external trigger Figure 4 3 Timing in triggered seguential readout mode Simultaneous readout interleave exposure To achieve highest possible frame rates the camera must be set to Free running mode with simultaneous readout The camera continuously delivers images as fast as possible Exposure time of the next image can start during the readout time of the current image When the acguisition of an image needs to be synchronised to an external event an external trigger can be used refer to Section 4 4 In this mode the camera is idle until it gets a signal to capture an image 20 exposure n i idle exposure n 1 idle read out n 1 read out n read out n 1 frame time Figure 4 4 Timing in free running simultaneous readout mode readout time gt exposure time exposure n 1 exposure n exposure n 1 idle read out n 1 idle read out n frame time Figure 4 5 Timing in free running simultaneous readout mode readout time lt exposure time exposure n lt idle XxX exposure n 1 lt ide gt Readoutn 1 idle gt Readout n idle gt Readout n 1 5 external trigger D earliest possible trigger B Figure 4 6 Timing in triggered simultaneous readout mode 4 1 2 Constant Frame Rate CFR When the CFR mode is switched on the target frame rate for the free running mode can be setting t
58. llumination to give an image with a mid grey level Gain correction is not a trivial feature The quality of the grey reference image is crucial for proper gain correction Gain correction algorithm After configuring the camera with a black and grey reference image the camera is ready to apply the gain correction Determine the average value of the grey reference image Subtract the offset correction matrix from the grey reference image Divide the average value by the offset corrected grey reference image Pixels that have a grey level higher than a certain threshold are marked as hot pixels Store the result in the camera as the gain correction matrix A 01 5 W N During image acguisition multiply the gain correction matrix from the offset corrected acquired image and interpolate the hot pixels see Section 4 6 2 Gain correction is not a trivial feature The quality of the grey reference image is crucial for proper gain correction 4 6 Image Correction 45 4 Functionality 1 1 v 1 1 v average 112 010 109 1 10 Ed N J lt gt 2 1 1 1212081 picture 110 2 0 9 141 4 1 gt 1 gray reference offset correction gain correction picture matrix matrix Figure 4 34 Schematic presentation of the gain correction algorithm O Gain correction always needs an offset correction matrix Thus the offset correc tion always has to be performed
59. lly used to implement a transfer curve for contrast expansion This camera performs a 12 to 8 bit mapping so that 4096 input grey levels can be mapped to 256 output grey levels 0 to 4096 and 0 to 255 This camera support 2 LUT both are identical The default LUTs is a gain function with value 1 LUTO has higher priority as LUT1 Both LUT can be configured with the built in Gain Gamma functions or with a LUT file LUTX Enable LUT X Enable the LUTX Gain Linear function Y 256 4096 value X Valid range for value 1 4 Gamma Gamma function Y 256 4096value X value Valid range for value 0 4 4 80 value Enter a value The LUT will be calculated and downloaded to the camera Region LUT Both LUT can be configured with ROI vlaues The LUT is only working inside the the ROI values Overlapping is possible LUTO has higher priority Enable Region LUT Enable the region LUT functionality Region of LUT X X coordinate of region LUT starting from 0 in the upper left corner Y Y coordinate of region LUT starting from 0 in the upper left corner W Region LUT window width in steps of 2 pixel H Region LUT window height Set to max ROI Set Region LUT window to maximal ROI X 0 Y 0 W 1024 H 1024 LUT Files To load or save a LUT file LUT Index Select the LUT you want to load or save a file File functions Load File Load a user defined LUT file into the camera txt tab delimit
60. meraLink Data DO 16 O P_XD1 Positive LVDS Output CameraLink Data D1 17 O P_XD2 Positive LVDS Output CameraLink Data D2 18 O P_XCLK Positive LVDS Output CameraLink Clock 19 O P_XD3 Positive LVDS Output CameraLink Data D3 20 N_SERTOCAM Negative LVDS Input Serial Communication to the camera 21 O P_SERTOFG Positive LVDS Output Serial Communication from the camera 22 P_CC1 Positive LVDS Input Camera Control 1 CC1 23 N_CC2 Negative LVDS Input Camera Control 2 CC2 24 P_CC3 Positive LVDS Input Camera Control 3 CC3 25 N_CC4 Negative LVDS Input Camera Control 4 CC4 26 PW SHIELD Shield S PW SHIELD Shield Table A 3 Pinout of the CameraLink connector A 2 CameraLink Connector 101 A Pinouts 102 Revision History Revision Date Changes
61. methanol to remove streaks It is imperative that no pressure be applied to the surface of the sensor or to the black globe top material if present surrounding the optically active surface during the cleaning process 8 3 Optical Interface 91 8 Mechanical and Optical Considerations Iso Propanol Germany Table 8 2 Recommended materials for sensor cleaning Product Supplier Remark EAD400D Airduster Electrolube UK Anticon Gold 9 x 9 Wiper Milliken USA ESD safe and suitable for class 100 environments www milliken com TX4025 Wiper Texwipe www texwipe com Transplex Swab Texwipe Small Q Tips SWABS Q tips Hans J Michael GmbH www hjm reinraum de BB 003 Germany Large Q Tips SWABS Q tips Hans J Michael GmbH CA 003 Germany Point Slim HUBY 340 Q tips Hans J Michael GmbH Germany Methanol Fluid Johnson Matthey GmbH Semiconductor Grade Germany 99 9 min Assay Merck 12 6024 UN1230 slightly flammable and poisonous www alfa chemcat com 2 Propanol Fluid Johnson Matthey GmbH Semiconductor Grade 99 5 min Assay Merck 12 5227 UN1219 slightly flammable www alfa chemcat com For cleaning the sensor Photonfocus recommends the products available from the suppliers as listed in Table 8 2 D 92 Cleaning tools except chemicals can be purchased from Photonfocus www photonfocus com 8 4 CE compliance The Photonfocus camera serie MV1 D1024E CL is in compliance with the
62. n describes the procedure to adjust the back focus if you reguire that because e g you are using a special lens 1 Screw a lens strongly into the camera s C mount ring 2 Unscrew the 3 small screws that lock the C mount ring with a hex wrench of size 0 89 mm The position of the screws is shown in Fig The ring can now be screwn upwards or downwards by turning the lens 3 To adjust the back focus fully open the aperture of the lens and set the focus to infinite Start the image acquisition and point the camera to a straight edge line in a distance x x infinite distance of your lens from the camera e g a door frame 5 Screw the ring upwards or downwards until the straight edge line distance infinite is also straight on the camera image 6 Tighten the small screws As the ring is locked the lens can now be easily removed J A f V A y Y VA I A V v N V f JA A y Figure 8 2 Position of the 3 small screws that lock C mount ring 90 8 3 Optical Interface 8 3 1 Cleaning the Sensor The sensor is part of the optical path and should be handled like other optical components with extreme care Dust can obscure pixels producing dark patches in the images captured Dust is most visible when the illumination is collimated Dark patches caused by dust or dirt shift position as the angle of illumination changes Dust is normally not visible when the sensor is positioned at the exit port of an integra
63. n the section Fig This trigger pulse then starts after a user configurable burst trigger delay time thurst trigger delay the internal burst engine which generates n internal triggers for the shutter and the strobe control A user configurable value defines the time thurst period time between two acquisitions 38 external trigger pulse input trigger after isolator trigger pulse internal camera control Gitter delayed trigger for burst trigger engine N puratamageridelay delayed trigger for shutter control t burst period time cr trigger delay internal shutter control cr trigger offset t exposure delayed trigger for strobe control Terobe deiay internal strobe control tstrobe offset la tsirobe duration external strobe pulse output gt ita Figure 4 29 Timing diagram for the burst trigger mode 4 4 Trigger and Strobe 39 4 Functionality 4 4 6 Trigger timing values Table 4 4 shows the values of the trigger timing parameters MV1 D1024E 160 CL MV1 D1024E 160 CL Timing Parameter Minimum Maximum ta iso input 45 ns 60 ns tittor 0 25 ns Trigger delay 0 0 41 s Thurst trigger delay 0 0 41 s thurst period time depends on camera settings 0 415 ttrigger offset NON burst mode 100 ns duration of 1 row Ttrigger offset Durst mode 125 ns 125 ns texposure 10 us 0 41 s tstrobe delay 0 0
64. nd of the exposure time Time 800 means 80 of the exposure time 82 Skimming Skimming is a Photonfocus proprietary technology to enhance detail in dark areas of an image Skimming Skimming value If 0 Skimming is disabled See also the corresponding section in the camera manual 7 1 MV1 D1024E 160 83 7 Graphical User Interface GUI 7 1 7 Correction This tab contains correction settings MV1 D1024E 160 boardO_portO O Serial 1291 Exposure Window Trigger Data Output LUT LinLog E Info Reset Correction Mode Calibration Saa O off Offset FPN Hotpixel Gain Correction O offset Correction Settings File O Offset Hotpixel Produce a black image with Produce a grey image with O hal 160DN lt average lt 400DN 2200DN lt average lt 3600DN O Kon 128it 128it Offset Gain Offset Gain Hotpixel Validation Validation Factory Reset Frame Rate fps Black Level Offset Save to Flash 45 sec Average Value WARNING 3400 ES Calculate Correction 4 sec The factory presets will be deleted Please refer to the manual for more details about the correction modes Figure 7 8 Correction panel Correction Mode This camera has image pre processing features that compensate for non uniformities caused by the sensor the lens or the illumination Off No correction Offset Activate offset correction Offset Hotpixel Activate offset and hot pixel correction Hotpixel
65. one pixel The grey level is defined by a 12 bit value 0 means black 4095 means white This allows to set any grey level to get the maximum contrast depending on the acquired image The x y position and the grey level can be set via the camera software Figure Fig 4 45 shows two examples of the activated crosshairs with different grey values One with white lines and the other with black lines Figure 4 45 Crosshairs Example with different grey values The x and y positon is absolute to the sensor pixel matrix It is independent on the ROI MROI or decimation configurations Figure Fig 4 46 shows two situations of the crosshairs configuration The same MROI settings is used in both situations The crosshairs however is set differently The crosshairs is not seen in the image on the right because the x and y position is set outside the MROI region 54 0 0 ROI Kapsotutr Yabsout Grey Level 0 0 Kapsorutr Vabsour Grey Level X max Ymax ROI Figure 4 46 Crosshairs absolute position 4 9 Crosshairs ROI X max Ymax ROI 55 4 Functionality 4 10 Image Information and Status Line There are camera properties available that give information about the acquired images such as an image counter average image value and the number of missed trigger signals These properties can be queried by software Alterna
66. only a single formula applies frame rate equals approximately the inverse of the sum of exposure time and readout time Simultaneous readout mode exposure time lt readout time The frame rate is given by the readout time frame rate equals approximately the inverse of the readout time Simultaneous readout mode exposure time gt readout time The frame rate is given by the exposure time frame rate equals approximately the inverse of the exposure time The simultaneous readout mode allows higher frame rate However If the exposure time strongly exceeds the readout time then the effect on the frame rate is neglectable In simultaneous readout mode image output faces minor limitations The overall linear sensor reponse is partially restricted in the lower gray scale region O A new calibration of the image correction is reguired when changing the read out mode from seguential to simultaneous readout mode or vice versa Seguential readout By default the camera continuously delivers images as fast as possible Free running mode in the seguential readout mode Exposure time of the next image can only start if the readout time of the current image is finished exposure read out exposure read out Figure 4 2 Timing in free running seguential readout mode When the acguisition of an image needs to be synchronised to an external event an external trigger can be used refer to Section 4 4 In this mode the camera is idle unti
67. ow at the bottom of the main window If the device does not open check the following e Is the power LED of the camera active Do you get an image in the display software of your frame grabber e Verify all cable connections and the power supply e Check the communication LED of the camera do you see some activity when you try to access the camera 6 5 Graphical User Interface GUI 69 6 The PFRemote Control Tool 6 5 3 Main Buttons The buttons on the right side of the configuration dialog store and reset the camera configuration E xl Reset Store as defaults r Settings file se Factory Reset Figure 6 3 Main buttons Reset Reset the camera and load the default configuration Store as defaults Store the current configuration in the camera flash memory as the default configuration After a reset the camera will load this configuration by default Settings file File Load Load a stored configuration from a file Settings file File Save Save current configuration to a file Factory Reset Reset camera and reset the configuration to the factory defaults 6 6 Device Properties Cameras or sensor devices are generally addressed as device in this software These devices have properties that are accessed by a property name These property names are translated into register accesses on the driver DLL The property names are reflected in the GUI as far as practicable A property name normally has a special m
68. photon focus User Manual MV1 D1024E CameraLink Series CMOS Area Scan Cameras MAN064 09 2014 V1 0 All information provided in this manual is believed to be accurate and reliable No responsibility is assumed by Photonfocus AG for its use Photonfocus AG reserves the right to make changes to this information without notice Reproduction of this manual in whole or in part by any means is prohibited without prior permission having been obtained from Photonfocus AG Contents 7 1 1 About Photonfocusl n L 7 12 Contacts S an S Elen raot ey Rh BAe Ew e SIE Be A da S 7 1 3 Sales OCES sida u h n Sele ab SE near 7 aie ee ELI Gee RA 7 1 5 Legend 4 ecm 8 08 eek a Poe ee a A E ea 8 2 How to get started CameraLink 9 13 3 1 Introductionl NL 13 ee Ge en er nee eee 14 3 3 Available Camera Models ce 15 3 4 Difference to legacy MV D1024E series 15 16 18 4 Functionality 19 4 1 Image Acquisition s e a anaa a a aa a aa aaa a a a a a oE 19 4 1 1 Readout Modes lt nn L 19 Lia aa e ss 21 4 2 Pixel Response nm 21 4 2 1 Linear Response aaao 21 TT it et Sc ae eens 22 4 2 3 SKIMMIDON oc Se Re ee ee a EE eee FORRES 26 Klan Senate Gulch de ab ee X alasajon ae ee aed a ee eee R 27 4 3 1 Region of Interest ROI o e 2 0 27 4 3 2 Multiple Regions of Interest o o e e 29 e REIR AAA 31
69. pixels 0 re N 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 Grey level 12 Bit DN Figure 4 35 Proper grey reference image for gain correction 7 lt Lp po AN le JE EE 1 2 0 0 09 100 OOE 21 alo 1212031 IB 210721 SENEN T W qe alice le current image offset correction gain correction corrected image matrix matrix Figure 4 36 Schematic presentation of the corrected image using gain correction algorithm 4 6 5 Correction Ranges Table 4 5 shows the minimum and maximum values of the correction matrices i e the range that the offset and gain algorithm can correct Minimum Maximum Offset correction 1023 DN 12 bit 1023 DN 12 bit Gain correction 0 7 1 69 Table 4 5 Offset and gain correction ranges 4 6 Image Correction 47 4 Functionality 4 7 Gain and Offset There are two different gain settings on the camera Gain Digital Fine Gain Digital fine gain accepts fractional values from 0 01 up to 15 99 It is implemented as a multiplication operation Digital Gain Digital Gain is a coarse gain with the settings x1 x2 x4 and x8 It is implemented as a binary shift of the image data where 0 is shifted to the LSB s of the gray values E g for gain x2 the output value is shifted by 1 and bit O is set to 0 The resulting gain is the product of the two gain values which means that the image da
70. ponse Curve Varying Parameter Time1 Time2 1000 Value1 19 Value2 18 200 T T T T T T 180 160 4 S 2 140 5 co 120 100 880 N 2 meai T1 92 5 80 F T1 940 N S T1 960 a 60 T1 980 4 5 T1 1000 O 40 E i TILIA REA ES BAG SBE REE EA SDR EEE SBE EERE BEE JAA SBE BEG EE BRR CGN Me GO E Be Bo be in KA RR Ge be BOE OG ee icy NA 20 ied AAA nt Be Bese hg ee a PTGS JN heat Baad ne DR INE BE ATI GANA Te ade AA Be Rita ade ASTE BS KKI ee Rin Gade ae ap Ge Gre a BSE 0 Illumination Intensity Figure 4 12 Response curve for different LinLog settings in LinLog2 mode LinLog3 To enable more flexibility the LinLog3 mode with 4 parameters was introduced Fig 4 13 shows the timing diagram for the LinLog3 mode and the control parameters V LinLog Value1 Value2 Value3 Constant 0 Figure 4 13 Voltage switching in the LinLog3 mode 4 2 Pixel Response 25 4 Functionality Typical LinLog2 Response Curve Varying Parameter Time2 Time1 850 Value1 19 Value2 18 300 T T T T T T 250 _ T2 950 T2 960 A T2 970 T2 980 200 T2 990 o E 3 150 gt D 5 100 o 5 O 50 7 0 Illumination Intensity Figure 4 14 Response curve for different LinLog settings in LinLog3 mode 4 2 3 Skimming Skimming is a Photonfocus proprietary technology to enhance detail in dark areas of an image Skimmin
71. pulse For an active high trigger signal the camera starts the exposure with the positive edge of the trigger signal and stops it with the negative edge External Trigger with Camera controlled Exposure Time In the external trigger mode with camera controlled exposure time the rising edge of the trigger pulse starts the camera states machine which controls the sensor and optional an external strobe output Fig 4 27 shows the detailed timing diagram for the external trigger mode with camera controlled exposure time L external trigger pulse input trigger after isolator trigger pulse internal camera control t jitter delayed trigger for shutter control t trigger delay internal shutter control trigger offset t exposure i OS delayed trigger for strobe control K jaksoa internal strobe control t strobe offset tstrobe duration O 2 l0musu external strobe pulse output gt ssl Figure 4 27 Timing diagram for the camera controlled exposure time The rising edge of the trigger signal is detected in the camera control electronic which is implemented in an FPGA Before the trigger signal reaches the FPGA it is isolated from the camera environment to allow robust integration of the camera into the vision system In the signal isolator the trigger signal is delayed by time ta_iso input This signal is clocked into the FPGA which leads to a jitt
72. rection values into the camera RAM To make the correction values permanent use the Save to Flash button Save to Flash Save the current correction values to the internal flash memory AN This will overwrite the factory presets 7 1 MV1 D1024E 160 85 7 Graphical User Interface GUI 7 1 8 Info This panel shows camera specific information such as type code serial number and firmware revision of the FPGA and microcontroller and the description of the camera interface MV1 D1024E 160 boardO_portO O Serial 1291 E Exposure Window Trigger Data Output LUT Lh Camera Info Temperature Store as Defaults Camera name Imager PCB deg C Settings File Typecode Imager deg C Serial Update Factory Reset FPGA Sensor Revision Frame Rate fps Average Value Counters Image 223433 Update Reset Missed Trigger 9 E Missed Burst Trigger lo Update Reset FPGA ADC Revision uC Revision Interface Baudrate Status Line The status line replaces the last row of the image with camera status information Every parameter is coded into fields of 4 pixels Enable Status Line Figure 7 9 Info panel Camera Info Camera name Name of the connected camera Typecode Type code of the connected camera Serial Serial number of the connected camera FPGA Sensor Revision Firmware revision of built in FPGA on the sensor PCB of the connected camera FPGA ADC Revision
73. round for opto isolated strobe signal 7 2 3 4 5 6 7 Table A 2 Power supply plug pin assignment A 2 CameraLink Connector The pinout for the CameraLink 26 pin 0 5 Mini D Ribbon MDR connector is according to the CameraLink standard CL and is listed here for reference only see Table The drawing of the CameraLink cable plug is shown in Fig gt Cameralink cables can be purchased from Photonfocus directly www photonfocus com 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Figure A 3 CameraLink cable 3M MDR 26 plug both ends 100 PIN IO Name Description 1 PW SHIELD Shield 2 O N_XDO Negative LVDS Output CameraLink Data DO 3 O N_XD1 Negative LVDS Output CameraLink Data D1 4 O N_XD2 Negative LVDS Output CameraLink Data D2 5 O N_XCLK Negative LVDS Output CameraLink Clock 6 O N_XD3 Negative LVDS Output CameraLink Data D3 7 P_SERTOCAM Positive LVDS Input Serial Communication to the camera 8 O N_SERTOFG Negative LVDS Output Serial Communication from the camera 9 N_CC1 Negative LVDS Input Camera Control 1 CC1 10 N_CC2 Positive LVDS Input Camera Control 2 CC2 11 N_CC3 Negative LVDS Input Camera Control 3 CC3 12 P_CC4 Positive LVDS Input Camera Control 4 CC4 13 PW SHIELD Shield 14 PW SHIELD Shield 15 O P_XDO Positive LVDS Output Ca
74. ss thresholding and the result is an image with only black and white grey levels and line d applies a gamma correction see also Section A 4 8 1 Gain The Gain mode performs a digital linear amplification with clamping see Fig 4 38 It is configurable in the range from 1 0 to 4 0 e g 1 234 48 Figure 4 37 Commonly used LUT transfer curves Grey level transformation Gain y 255 1023 a x 300 T T T 250 200 150 100 50 y grey level output value 8 bit DN 0 i i l li 0 200 400 600 800 1000 x grey level input value 10 bit DN Figure 4 38 Applying a linear gain with clamping to an image 4 8 Grey Level Transformation LUT 1200 49 4 Functionality 4 8 2 Gamma The Gamma mode performs an exponential amplification configurable in the range from 0 4 to 4 0 Gamma gt 1 0 results in an attenuation of the image see Fig 4 39 gamma lt 1 0 results in an amplification see Fig 14 40 Gamma correction is often used for tone mapping and better display of results on monitor screens Figure 4 39 Figure 4 40 50 Grey level transformation Gamma y 255 1023 x y2 1 300 T T T T T 250 200 150 100 Il Epia o id onono 50 F y grey level output value 8 bit DN 0 0 200 400 600 800 1000 1200 x grey level input value 10 bit DN Applying gamma correction to an image
75. ta is multiplied in the camera by this factor ce Digital Fine Gain and Digital Gain may result in missing codes in the output im age data A user defined value can be subtracted from the gray value in the digital offset block If digital gain is applied and if the brightness of the image is too big then the interesting part of the output image might be saturated By subtracting an offset from the input of the gain block it is possible to avoid the saturation 4 8 Grey Level Transformation LUT Grey level transformation is remapping of the grey level values of an input image to new values The look up table LUT is used to convert the greyscale value of each pixel in an image into another grey value It is typically used to implement a transfer curve for contrast expansion The camera performs a 12 to 8 bit mapping so that 4096 input grey levels can be mapped to 256 output grey levels The use of the three available modes is explained in the next sections CE The output grey level resolution of the look up table independent of gain gamma or user definded mode is always 8 bit amp There are 2 predefined functions which generate a look up table and transfer it to the camera For other transfer functions the user can define his own LUT file Some commonly used transfer curves are shown in Fig Line a denotes a negative or inverse transformation line b enhances the image contrast between grey values x0 and x1 Line c shows brightne
76. tal Offset 60 16 Camera Type Code see Table 64 32 Camera Serial Number 68 32 Reserved 72 32 Reserved 76 16 FineGain This is fixed a point value in the format 4 digits integer value 12 digits fractional value 80 24 Reserved 84 32 Reserved 88 32 Reserved 92 4 Trigger Level signal level of the trigger input signal Bit 0 ExSync CC1 Bit 1 1 O Trigger Bit 2 CC3 Bit 3 CC4 57 4 Functionality 4 10 3 Camera Type Codes Camera Model Camera Type Code MV1 D1024E 160 CL 12 110 Table 4 8 Type codes of Photonfocus MV1 D1024E camera series 4 11 Test Images Test images are generated in the camera FPGA independent of the image sensor They can be used to check the transmission path from the camera to the frame grabber Independent from the configured grey level resolution every possible grey level appears the same number of times in a test image Therefore the histogram of the received image must be flat O A test image is a useful tool to find data transmission errors that are caused most often by a defective cable between camera and frame grabber The analysis of the test images with a histogram tool gives gives a flat histogram amp only if the image width is a multiple of 1024 in 10 bit or 12 bit mode or 256 in 8 bit mode The height should be a multiple of 1024 In 12 bit mode 4 11 1 Ramp Depending on the configured grey level resolution the ramp test image outputs a constant pattern wit
77. tatus line Software provided for setting and storage of camera parameters CameraLink base interface The rugged housing at a compact size of 55 x 55 x 40 mm makes the MV1 D1024E camera series the perfect solution for applications in which space is at a premium 13 3 Product Specification 3 2 Feature Overview Characteristics Interface MV1 D1024E CL Series CameraLink base configuration Camera Control Configuration Interface PFRemote Windows GUI or programming library CLSERIAL 9 600 baud up to 1 5Mbaud user selectable Trigger Modes Image pre processing Interface Trigger External opto isolated trigger input Shading Correction Offset and Gain 2 look up tables 12 to 8 bit on user defined image region Region LUT Features Greyscale resolution 12 bit 10 bit 8 bit Region of Interest ROI Linear Mode LinLog Mode Skimming Up to 512 regions of interest MROI Test pattern LFSR and grey level ramp Image information and camera settings inside the image status line Crosshairs overlay on the image High blooming resistance Opto isolated trigger input and opto isolated strobe output Table 3 1 Feature overview see Chapter 4 for more information o p l y IA A N v N y f D Figure 3 1 MV1 D1024E CL CMOS camera series with C mount lens 14 3 3 Available Camera Models CE Please check the availab
78. tensity proportional to the ratio of readout time over frame time A pulsating heartbeat indicates that the camera is powered up and is in idle mode without sending images LED Red Red indicates an active serial communication with the camera Table 5 2 Meaning of the LED of the CameraLink cameras 5 1 5 CameraLink Data Interface The CameraLink standard contains signals for transferring the image data control information and the serial communication Data signals CameraLink data signals contain the image data In addition handshaking signals such as FVAL LVAL and DVAL are transmitted over the same physical channel Camera control information Camera control signals CC signals can be defined by the camera manufacturer to provide certain signals to the camera There are 4 CC signals available and all are unidirectional with data flowing from the frame grabber to the camera For example the external trigger is provided by a CC signal see Table 5 3 for the CC assignment CC1 EXSYNC External Trigger May be generated either by the frame grabber itself software trigger or by an external event hardware trigger CC2 CTRL Control0 This signal is reserved for future purposes and is not used CC3 CTRLI CC4 CTRL2 Control2 This signal is reserved for future purposes and is not used Control1 This signal is reserved for future purposes and is not used Table 5 3 Summary of th
79. ting sphere where the illumination is diffuse 1 The camera should only be cleaned in ESD safe areas by ESD trained personnel using wrist straps Ideally the sensor should be cleaned in a clean environment Otherwise in dusty environments the sensor will immediately become dirty again after cleaning 2 Use a high quality low pressure air duster e g Electrolube EAD400D pure compressed inert gas www electrolube com to blow off loose particles This step alone is usually sufficient to clean the sensor of the most common contaminants Workshop air supply is not appropriate and may cause permanent damage to the sensor 3 If further cleaning is required use a suitable lens wiper or Q Tip moistened with an appropriate cleaning fluid to wipe the sensor surface as described below Examples of suitable lens cleaning materials are given in Table 8 2 Cleaning materials must be ESD safe lint free and free from particles that may scratch the sensor surface Do not use ordinary cotton buds These do not fulfil the above requirements and permanent damage to the sensor may result 4 Wipe the sensor carefully and slowly First remove coarse particles and dirt from the sensor using Q Tips soaked in 2 propanol applying as little pressure as possible Using a method similar to that used for cleaning optical surfaces clean the sensor by starting at any corner of the sensor and working towards the opposite corner Finally repeat the procedure with
80. tively a status line within the image data can be switched on that contains all the available image information 4 10 1 Counters and Average Value Image counter The image counter provides a sequential number of every image that is output After camera startup the counter counts up from 0 counter width 24 bit The counter can be reset by the camera control software Real Time counter The time counter starts at O after camera start and counts real time in units of 1 micro second The time counter can be reset by the software in the SDK Counter width 32 bit Missed trigger counter The missed trigger counter counts trigger pulses that were ignored by the camera because they occurred within the exposure or read out time of an image In free running mode it counts all incoming external triggers counter width 8 bit no wrap around see also Section 4 4 8 Missed burst trigger counter When the camera is in burst trigger mode see Section 4 4 5 a missed burst trigger counter will be incremented when a subsequent external trigger TriggerMode 0n is applied while a burst sequence is running see also Section Average image value The average image value gives the average of an image in 12 bit format 0 4095 DN regardless of the currently used grey level resolution 4 10 2 Status Line If enabled the status line replaces the last row of the image with camera status information Every parameter is coded into fields of 4 pixels LSB first
81. uct Specification 3 6 Frame Grabber relevant Configuration The parameters and settings which are essential to configure the frame grabber are shown in the following table Pixel Clock per Tap MV1 D10124E 160 CL 80 MHz Number of Taps 2 Greyscale resolution 12 bit 10 bit 8 bit Line pause 8 clock cycles CC1 EXSYNC cc2 not used CC3 not used cc4 not used Maximal average data rate 8 bit 160 MB s Maximal average data rate 10 12 bit 320 MB s Table 3 5 Summary of parameters needed for frame grabber configuration Footnotes assuming 16 bit pixel data transmission CameraLink port and bit assignments are compliant with the CameraLink standard see CL Table 3 6 shows the tap configuration for the MV1 D1024E 160 CL camera Bit Tap 0 Tap 1 TapO Tap 1 Tap 0 Tap 1 8 Bit 8Bit 10 Bit 10 Bit 12 Bit 12 Bit 0 LSB AO BO AO co AO co 1 A1 B1 A1 C1 A1 C1 2 A2 B2 A2 C2 A2 C2 3 A3 B3 A3 C3 A3 C3 4 A4 B4 A4 C4 A4 C4 5 A5 B5 A5 c5 A5 c5 6 A6 B6 A6 C6 A6 C6 7 MSB of 8 Bit A7 B7 A7 C7 A7 C7 8 BO B4 BO B4 9 MSB of 10 Bit B1 B5 B1 B5 10 B2 B6 11 MSB of 12 Bit B3 B7 Table 3 6 CameraLink 2 Tap port and bit assignments for the MV1 D1024E 160 camera 18 A Functionality This chapter serves as an overview of the camera configuration modes and explains camera features The goa
82. website at www photonfocus com CL CameraLink Specification January 2004 SW002 PFLib Documentation Photonfocus August 2005 AN001 Application Note LinLog Photonfocus December 2002 AN007 Application Note Camera Acquisition Modes Photonfocus March 2004 AN008 Application Note Photometry versus Radiometry Photonfocus December 2004 AN010 Application Note Camera Clock Concepts Photonfocus July 2004 AN021 Application Note CameraLink Photonfocus July 2004 AN026 Application Note LFSR Test Images Photonfocus September 2005 97 10 References 98 A Pinouts A 1 Power Supply Connector The power supply plugs are available from Binder connectors at www binder connector de Fig A 2 shows the power supply plug from the solder side The pin assignment of the power supply plug is given in Table A 2 It is extremely important that you apply the appropriate voltages to your camera Incorrect voltages will damage or destroy the camera Figure A 1 Power connector assembly Connector Type Order Nr 7 pole plastic 99 0421 00 07 7 pole metal 99 0421 10 07 Table A 1 Power supply connectors Binder subminiature series 712 99 A Pinouts Pin I O Type Name Description VDD 12 V DC 10 GND Ground RESERVED Do not connect STROBE VDD 5 15 V DC STROBE Strobe control opto isolated TRIGGER External trigger opto isolated 5 15V DC PWR GROUND Signal g

User Manual MV1-D1024E CameraLink Series

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