fairchild imaging owl camera series users manual
Contents
1. Power Supply 5 0V 5 0V Power Dissipation 2 5W 2 5W Ambient Operating Temp 0 to 45 C 0 to 45 C Storage Temp 0 to 752 0 to 75 C Power Connector 4 pin Hirose HR10A 7R 4P 4 pin Hirose HR10A 7R 4P Data Connector MDR 26 CameraLink config Single Base One 3m 10226 6212VC MDR 26 CameraLink config Single Base One 3m 10226 6212VC Control connector CameraLink Connectors CameraLink Connectors At High Gain At Low Gain Table 1 2 2 Settings and Controls Function Factory User Camera Calibrated Settable Link Reset to Default Conditions X X Fixed Pattern Noise Correction X X X PRNU Correction X X Integration Time X X External Synch Free Run X X Pixel Level Gain X X Line Synchronization X X Test Patterns X X X 1 3 Thermal Considerations The CAM CMOS 2K LS has been carefully designed to separate the camera electronics from the image sensor In addition the Fairchild Imaging CMOS sensor runs cooler than a CCD device A Fairchild Imaging advises waiting until the camera has stabilized thermally before performing offset and gain corrections You can determine that the camera has stabilized thermally by repeatedly using the TSB command to read sensor temperature When sensor temperature changes less than 0 1 C per minute the camera has stabilized A Try to avoid excess temperatures in the ambient around2. B bit 0 12 bit C9 C11 BYTES 8 bil EC E 7 12 bit 0 BYTE 5 Full B bi OAT BYTE 4 Medium BYTE 3 a bil Co C7 12 bit E ET 5 8 a 8 bit F E7 Pit 12 GE 11 Port A BYTE 1 8 BE AAT 12blE Figure A 3 Data Routing for Base Medium and Full configurations gt gt Serle ini a z zd ly 1 Sed HM R Fl L E x 1 2 a a 1 a E ES z ULZ D JEEN SerTEG Sere i 20 i LL LL i 13 A Zg EI g z ui Bu ni B pEr E i o dh inc E 4 E 28 ii dz dz oo 26 26 SB RES e e onun onun onun onun onun onun onun onun onun onun onun onun onun onun mun Figure A 4 Camera Link Cable 26 Position Cabl 26 Position High Density l SS t High Density Mini D Ribbon See pinout for cable construction Mini D Ribbon MDR Male Plug MDR Male Plug Thumbscrews Thumbscrews Figure A 5 3M Part Number Ordering Information see further www 3M com 14X26 SZLB XXX 0LC Shell Retention Options Length B Thumbscrew shell kit 100 1 meter T Thumbscrew overmold shell 200 2 meters 300 3 meters 450 4 5 meters 500 5 meters 700 7 meters A00 10 meters
3. cs catt 27 4 3 Lens Mount Extender eee 27 4 4 Mechanical Drawing of Available Camera Face Mounting L Bracket 29 LE Eo OS wads success a brace M RC A EE 30 4 6 Positioning Accuracy of the Sensor Chip in the Camera 30 4 6 Manso cc a e EU HR ARES eee ERA NER IECUR E ARES QU HA UR HRS RE S ae 30 TT 30 4 9 Lens Modeling 31 SECTION 5 Handling InsiructiioTis aa parada 32 5 1 Electrostatic Disehtrgei anana n n n una conie 32 5 2 Preventing ESD 32 5 3 Protecting Against Dust Oil and Scratches 32 5 4 Cleaning the Sensor 32 SECTION 6 Troubleshoolihg 0c oo e pecie pa ERR ERR 5555555555553555 IERI RE 555535552 33 6 1 Check the Obvious Things EISE noo nonno oon eene 33 6 2 Use the Camera Control Interface to Perform Checks 33 6 3 Other Areas You Should Check esse 33 SECTION 7 Product Tse ge 35 REFERENCE A Camera Link Introduction 5 ooh 36 SECTION 1 Introduction to the CAM CMOS 2K LS Ultra High Performance Line Scan Camera 1 1 Camera Highlights Description The OWL CMOS Line Scan Camera is an ultra sensitive camera for use in line scan applications that demand high performance under low light conditions The camera is ba
4. Full Spectrum of Applications Precision manufacturing inspection Web inspection Sorting and routing Biomedical readout systems Diagnostic systems 1 2 Camera Specification RDI and MRDI Performance Specification Table 1 2 1 Functions RDI MRDI Data rates Up to 80 MHz Up to 80 MHz Line rates 38 KHz 2 9 KHz Dynamic Range High gain 650 1 Low gain 1100 1 High gain 10 000 1 Low gain 31 000 1 Resolution 2048 pixels 2048 pixels Pixel size Zum x 7um 7um x 7um Max Clock speed 80 MHz 80 MHz Max Pixel Clock per Output 40 MHz 40 MHZ Anti Blooming 15000 X 15000 X Digitized ADC Output 12 bits 12 bits Pixel gain selectable pixel by 1X or 8 5X 1X or 8 5X pixel Output Gain Range 18 dB 18 dB External Synchronization Option available Option available Random Noise pk pk rms 44DN pk pk 6 RMS 3DN pk pk 0 4DN RMS Noise Equivalent Exposure 9 7 p CM M pJ CM Sat Equivalent Exposure 5 n4 CM 40nJ CM 5nJ CM 40nJ CM Intuitive command control instruction set See Section 3 2 See Section 3 2 Sensitivity High gain Low gain 5700 DN nJ cm 61 5 DN nJ cm 5700 DN nJ cm 61 5 DN nJ cm Flat field correction Internal Internal Lens mount type M58 to Nikon F mount amp C mount M58 to Nikon F mount amp C mount Body Size W H D 3 92 W x 3 92 H x 1 84 D 3 92 W x 3 92 H x 1 84 D
5. ExSynch Camera Input Low Again In this way the Line Rate is User Set by Frequency of ExSynch Start of Integration initiation treset yFR after LineValid Camera Output Goes High treset after the System takes the ExSynch Camera Input High Reset after the User takes ElectronicShutter Camera Input High End of Integration tintegration after start of Integration User may set tintegration with Software When the User takes ExSynch Camera Input Low tintegration Reset after User takes ExSync Camera Input High When the User takes the ElecShutter Camera Input Low 4 tinePeriod ousuouc br u h nti treset N lntegrationMax PS PP litation may be shortened with the Command Software LineValid Camera Output treadout 2048 Clock Cycles Notes specific to this mode 1 The camera is not triggered instead the camera itself synchronizes the system This is the default mode set by the factory 2 The camera internally initiates readout of line n on its own LineValid goes high a time tes afterwards 3 The user must synchronize motion of the material moving past the camera to the camera s LineValid output 4 The user must synchronize collection of data in the PC frame grabber to the LineValid camera output 5 While LineValid is high data may be sampled on rising edges of Camera Strobe Output for the 2048 clock cy
6. example Type in SLR then enter then type 2000 then enter RSH This command allows you to perform a hard camera reboot The camera returns Reboot Started RSS This command allows you to perform a logic reset NO TEC L e no message INQ This command will show you what camera is connected to your PC The camera returns Fairchild Imaging 2K CMOS VER This command will show you the current software version in your camera The camera returns FPGA REV 2 5 The current value may be different Micro rev 0 90 Prod rev A 1 01 SLR This command allows you to set line rate enter value and enter The range for line rate should be 204 38610 CPO This command allows you to Calibrate Pixel Offset You can observe this command by the blinking green amber LED When the LED stops blinking that means that the calibration of the pixels is completed You must cover lens when performing this operation CPG This command allows you to Calibrate Pixel Gain We strongly recommend that this command be done after each CPO To perform this operation correctly the camera must look at a uniform illuminated light source The LED will be a blinking amber red VOM This command reads the different component voltages located within the camera The camera returns INPUT 6 103 3 9VD 3 225 3 4VS 3 448 1 5VD 1 495 1VAD2 0 980 1VAD 0 980 TSB This command reads the
7. as possible at the beginning of the line period 2 ExSync must be returned high at least prior to taking it low again to signal the end of the line period 3 The user sets integration time tintegration with the software command set 4 The user can read data from the CAM CMOS 2K LS while LineValid is high as shown above Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev C 23 of 42 4 iuePeee m n 1 treset e twait P gt q integration gt ElectShutter b p Camera Input tHoldLow gt tHoldHigh gt WinSync gt tsetup ExSync Camera Input LineValid Camera Output tReadout 2048 Clock Cycles gt txFR Notes specific to this mode The user initiates the reset amp integration cycle by taking the ElectShutter Camera Input high The user terminates integration by taking the ElectShutter Camera Input low ElectShutter will not be recognized by the camera until a time t after ExSync is brought low If ElectShutter is brought high earlier than constrained above the camera will interpret this as ElectShutter WN going high t5 after ExSync went high Any software command setting integration time is overridden by ElectShutter Camera Input If ElectShutter is still high when ExSync is taken low to initiate the next readout cycle then integration is immediately terminated 7 The user can read data from the CAM CMOS 2K LS
8. charged 2 accumulate electrons on the capacitor and 3 read the resulting charge value Conventionally these steps have been done by sensor wide controls Use of pixel level processing results in at least an order of magnitude reduction in noise due to the reset step as well as noise reduction in the multiplexing of the pixel values and the noise due to amplification for off chip drive Shown on the following page is a block diagram of the Fairchild Imaging 2048 x 1 CMOS sensor Figure 1 4 1 1 1 EVEN PIXEL SHIFT REGISTER E d Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Cs 10 of 42 Camera Hardware Interface 2 4 Installation Overview Before you integrate your camera into your system you should first determine some basic operating parameters such as what resolution you need Do you know the speed of the object that your camera will be inspecting One additional point you want to keep in mind is your lighting requirement One major item that you should identify early on in developing your system is the source of your EXSYNC control signal frfamegrabber custom controller shaft web encoder etc 2 2 Connectors Pinouts and Cables The CAM CMOS 2K LS uses one MDR 26 connector for CameraLink to communicate control signals data signals and serial communications CameraLink cables are available as a standard off the shelf part 3M 14X26 SZLB XXX OLC and others so that detailed c
9. internal camera temperature The camera returns Temp 39 42 C example SIT This command allows you to set the integration time Set line rate first SLR before using this command Enter value plus enter value in microseconds Range is 20 4900 SSM This command allows you to set the Sync mode When selecting the option you need enter the appropriate single digit number and then hit enter Value Function The camera returns 1 Free run 2 External Sync 3 External Sync fixed integration 4 External Sync electronic shutter SCM This command allows you to select a correction mode When selecting the option you need enter the appropriate single digit number and then hit enter Value Function The camera returns M1 1 memory M2 2 memory Offset Correction Gain Correction No Correction Full Correction OORUN STP This command allows you to select a test pattern When selecting the option you need enter the appropriate single digit number and then hit enter Value Function No output from camera 1 Horizontal Ramp 2 Vertical Ramp 3 Vertical Bars 4 Vertical Ramp and Bars 5 0 4095 Other Video CBR This command allows you to change the Baud Rate You will not see anything on your monitor Here is a table of stored rates in the camera Value Function 1 9600 2 19200 3 38400 Default 4 57600 5 115200 If you can t resis
10. mats Do not touch the window of the imager A Protecting Against Dust Oil and Scratches Be certain to avoid dust buildup on the sensor window where it could block the optical path By not touching the surface of the sensor you avoid introducing oil and avoid scratching the sensor window Again you should not insert anything into the lens mount barrel A Cleaning the Sensor Window Use compressed air to blow off particulate If for some reason cleaning of the sensor window is required use lens wiping cloth with a small amount of eyeglass cleaning fluid Do not use solvent as it may smear the sensor window SECTION 6 Troubleshooting 6 1 Check the Obvious Things Out First When trouble shooting you want to start the process with the obvious components contained within your system e Computer system hardware amp software ls the frame grabber plugged into the correct slot on the mother board e Are all electrical connections secure e Check to make sure that your light source is fully functional e Make sure that the pin configurations for all of your cables are correct e Make sure you have selected the correct lense for your camera 6 2 Use the Camera Control Interface to Perform Checks In the Camera Control function verify that the camera returns the control screen Verify that you can set various operating parameters 6 3 Other Areas You Should Check Contact Customer Support Before you call for s
11. the camera Figure 1 3 1 RDI and MRDI Responsivity Curve 0 7 0 6 0 5 0 4 QE 0 3 0 2 0 1 0 xs 3e 07 4e 07 5e 07 6e 07 7e 07 8e 07 9e 07 1e 06 1 1e 06 1 2e 06 Wavelength 1 4 Image Sensor Pixel level processing image sensors are based on the principle that photons induced by charge at the pixel site should be converted to as nearly as possible a noise free signal at the pixel site The application of this principle produces the lowest possible noise and also allows signal control at each pixel As is true in other sensors photons induce charge which is collected on a capacitor at the photo site In a pixel level processing sensor this charge is converted to an amplified voltage at the pixel This voltage is then read out through a multiplexor to an external circuit Since the readout starts with a strong signal the dominant read noise source is the noise associated with the charge accumulation at the pixel The 2048 x 1 linear CMOS image sensor uses a low fixed pattern noise capacitive transimpedance amplifier LFPN CTIA pixel architecture The pixel also includes circuitry for reducing 1 f noise correlated double sampling electronic shuttering and a horizontal anti blooming drain High speed non destructive readout of the sensor is achieved by using a hierarchial readout structure with two output ports In simplified form the pixel integration cycle consists of three steps 1 reset the capacitor to fully
12. AC number Change DAC n value GDN Get DAC number Get DAC n value SBS Set Bit shift This function allows user to shift 12 10 8 bit video SAP Stores all parameters This function allows you to save default or user settings RAP Recalls all parameters This function allows user to recall the factory calibration GSN Get serial number This function allows user to retrieve camera info e g model camera serial number CAO Calibrate Analog Offset This function allows user to calibrate the analog offset CAG Calibrate Analog Gain This function allows user to calibrate the analog Gain SAG Set Analog Gain This function allows user to set the analog gain SGH Set Gain High Set Pixel gain in Sensor SGL Set Gain Low Set Pixel gain in Sensor 3 4 The Four Modes for Synchronizing with the CAM CMOS 2K LS There are four synchronization modes as explained below and summarized in Table 3 4 1 below Freerunning Mode is described below in Figure 3 4 2 In this mode the camera is not triggered instead it drives the world around it It is the default mode set and shipped by the factory ExSync Line Synchronization is described below Figure 3 4 3 The target asychronously synchronizes the CAM CMOS 2K LS from an external trigger via the ExSync line The user selects ExSync Synchronization or any of the modes via the camera command set In this mode start of integration is asynchronously controllable with ExSync and continues until the
13. E Fairchild R OWL CAMERA SERIES CAM CMOS 2K LS ULTRA HIGH PERFORMANCE Line Scan Camera imaging Camera User s Manual Models RDI amp MRDI EMC Conformance This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules This product fulfills the following requirements of the standards and carries the CE marking EMC FCC Part 15 Subpart B EN 6100 6 4 2001 EN 6100 6 2 2001 EN6100 3 2 2000 EN 6100 3 3 1995 A1 2001 FAIRCHILD IMAGING OWL CAMERA SERIES USERS MANUAL The CAM CMOS 2K LS Line Scan Camera Rev B 2004 Fairchild Imaging Inc Fairchild Imaging Inc 1801 McCarthy Blvd Milpitas CA 95035 USA 1 800 325 6975 www fairchildimaging com PRELIMINARY DOCUMENT The information in this manual is preliminary All information provided in this manual is believed to be correct at the time of writing No responsibility is assumed by Fairchild Imaging for its use Fairchild Imaging intends to make this manual as accurate as possible and reserves the right to make changes to this information without notice Terminology Every effort has been made in this manual to use standard consistent definitions In particular the following terminology has been adopted Configuration refers to CameraLink setup including choice of Base Dual Base or Medium one or two PCs transmitted data path width etc e Mode refers to synchronization
14. Incorrect voltage might damage the camera Figure 2 3 1 Back View of CAM CMOS 2K LS Camera Link y Fairchild imaging PIN CAM2KCMOS s x MMMM 0000853 2 4 LED Indicator Status Lamp Table 2 4 1 Green Running Blinking Amber Red Busy with command Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 13 of 42 SECTION 3 Camera Control 3 1 Quick Start with the Camera Link Interface Follow your Frame Grabber manufacturer s instructions when inserting the frame grabber card into your PC Be sure that you install the correct configuration software that matches the camera that you are using At this point your camera should already be connected to the DC power supply and connected to the frame grabber in your PC Your frame grabber will see our camera and start communicating almost immediately As soon as your camera starts communicating with the frame grabber you can verify this fact by looking at your monitor and observing the video signal To communicate with your camera we have created specific commands In the next section we will go over these commands in detail 3 2 Commands Note Commands are not case sensitive To input commands type in the three character command and hit enter Command Syntax Command enter example Type in RSH then enter Command enter value example Type in SSM then enter then type 2 Command enter value enter
15. abling work is unnecessary Figure 2 2 1 MDR 26 CameraLink Connector 3M p n 334 34 series Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 11 of 42 Table 2 2 1 1 1 Inner shield 14 14 Inner shield 2 25 XO 15 12 AUT 3 24 0 X1 16 11 1 4 23 2 17 10 X2 5 22 Xclk 18 9 Xclk 6 21 X3 19 8 X3 7 20 SerTC 20 7 SerTC 8 19 SerTFG 21 6 SerTFG 9 18 CC1 22 5 1 10 17 2 23 4 2 11 16 CC3 24 3 CC3 12 15 CC4 25 2 CC4 13 13 Inner shield 26 26 Inner shield Notes e Exterior overshield is connected to the shells of the connectors on both ends 3M part 14X26 SZLB XXX OLC is a complete cable assembly including connectors e Unused pairs should be terminated in 100 ohms at both ends of the cable 2 3 Power Supply e The camera uses a single voltage input normally set to 5 0V e Ripple and noise is required to be lt 20 mV RMS e Power is supplied through a Hirose connector e When installing the mating connector be sure to line up the slots This action will assure that you will not bend any of the pins Table 2 3 1 Hirose Receptacle 5 0 6 0 V DC 5 0 6 0V DC Ground Bl wy Ni gt Ground AN If you are using an adjustable lab power supply it is extremely important that you apply the apppropriate voltage to your camera
16. airchild Imaging representative for more details Figure 4 4 1 250 THRU 5X 380V 005 R 25 4 5 Lenses Fairchild Imaging does not supply lenses 4 6 Positioning Accuracy of the Sensor Chip in the Camera Positioning accuracy of the sensor chip in the horizontal and vertical direction is 0 2 mm Rotational positioning accuracy is as shown Reference position is the center of the camera housing Since the translatory and rotational positioning tolerance depend on each other the worse case of maximum rotational and horizontal vertical mis positioning can not occur at the same time Figure 4 6 1 TILT 036 mm 4 7 Illumination In your application you must know the amount and wavelengths of light required Some additional things you want to consider respective to illumination are the characteristics of your light source and the spectral characteristics and speed of the object s being inspected 4 8 Light Sources When selecting and setting up your light source you should be aware of the following e Light sources do age over time e When light sources age they may produce less more light in some areas of the spectrum 4 9 Lens Modeling Several camera companies have included this and like information in their manuals For reference material it is very useful The focal point is the point at which the image of an infinitely distant object is brought to focus The effective focal length f is the dis
17. ch Calibrate analog offset 200 DN SAG Set analog gain 0 10 db CAG Adjust analog video gain mismatch Calibrate analog gain GSN Get camera serial number returns 128 character string serial number model etc SGH Set gain high Set pixel gain in sensor SGL Set gain low Set pixel gain in sensor 3 3 Camera Command Summary Table 3 3 1 RSH Reboot System Hard Hard reboot of camera RSS Reset Command Logic reset of camera INQ Inquiry Shows what camera is used VER Version Shows current software SLR Set Line Rate This function allows line rate change CPO Calibrate Pixel Offset This function performs correction of pixel offset CPG Calibrate Pixel gain This function performs correction of pixel gain VOM Voltage monitoring This function shows internal voltages TSB Temperature Sensor Board This function shows temp of sensor board SIT Set Integration Time This function allows user to set integration time SSM Set Sync Mode This function allows user to select sync mode SCM Select Correction Mode This function allows user to select correction mode STP Select Test Pattern This function allows user to select test pattern Fairchild Imaging CAM CMO Manual Rev C 18 CBR Change Baud rate This function allows user to select baud rate LED Light Emitting Diode Change LED state GDA Get DAC All Returns current DAC setting as a voltage SDN Set D
18. cles of readout as shown in the inset above this is the same for all four modes 6 A time ti iiio after the camera internally initiates the readout and integration cycle the camera also internally initiates pixel reset Integration then begins time tReset later with this integrated information to be read out in the subsequent line n 1 7 The factory set default is for integration to run until the end of the line period which results in a maximum integration time lintegrationMax LiinePeriod 7 treset n tinitiation 8 The line period Y pened and the integration time tintegration are selected by the user with the Command Software Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 21 of 42 lu inePeriod n n 1 tReset2 tintegration gt thoa ExSync Camera Input LineValid Camera Output tReadout 2048 Clock Cycles Notes specific to this mode 1 Unlike Freerunning mode the user triggers separately both the CAM CMOS 2K LS readout cycle and the CAM CMOS 2K LS reset amp integration cycle All of the modes other than Freerunning mode allow the user to do this 2 The user initiates a readout cycle by taking ExSync low as shown above Readout actually begins a time beg after ExSync is taken low and lasts 2048 clock cycles 3 The user can read data from the CAM CMOS 2K LS while LineValid is high as shown above and explained in Figure 3 4 1 4 The
19. control i e Freerunning ExSynch etc e Parameter refers to user settable variables such as exposure integration time line rate etc e Environment refers to the entire collection of user settable items configuration mode parameters image test pattern etc Table of Contents SECTION 1 Introduction to the CAM CMOS 2K LS Ultra High Performance Line Scan Camera eee eee ereer eee ereer eee ee 6 1 1 Camera IRURE Deinen ee 6 1 2 Camera Specification RDI and MRDI Performance Specification 7 1 3 Thermal Considerations sss eee 8 1 4 Image Sensor eite 9 SECTION 2 Camera Hardware Interface 111 1i orrirre eere eL Ras 11 2T Installation OVEIVIEW ae A x rut Lr a RM A ad 11 2 2 Connectors Pinouts and Cables see 11 2 5 PoWsr Supply odse d ond oda De Qd ei egg ols A 12 2 4 LED Indicator Status Lamp uet eee 13 SECTION 3 Camera Control v r ENZ ZEY KE E e a a eh evan 14 3 1 Quick Start with the Camera Link Interface sss eee eee 14 Care i o NP 14 3 3 Camera Command Summary eee eee eee eee eee 18 3 4 The Four Modes for Synchronizing with the CAM CMOS 2K LS 19 SECTION 4 Mechanical and Optical 55 26 4 1 Camera Dimensions and Mounting Facilities 26 n 1 1
20. end of the line period ExSync Line Synchronization with Programmable Integration Time is described in Figure 3 4 4 This mode is similar to ExSync Synchronization but in addition in this mode the user can program the duration of integration over the serial interface to be less than to the end of the line period ExSync Line Synchronization with Electronic Shutter Control is the fourth mode Figure 3 4 5 It gives the user asynchronous hardware control both start and end of integration The control lines ExSync and ElectronicShutter are CameraLink lines CC1 and CC2 respectively as described in Reference A and must be asserted by the frame grabber Table 3 4 1 Summary of CAM CMOS 2K LS Modes Free Running factory default ExSynch Sychronization ExSynch Synchronization with Programmable Integration Time ExSynch Synchronization with Electronic Shutter Control Synchronization The CAM CMOS 2K LS drives the frame grabber s Motion of the subject being imaged must be synchronized to the CAM CMOS 2K LS The User Synchronizes the CAM CMOS 2K LS via an Encoder Line Start Trigger The CAM CMOS 2K LS LineValid Camera Output Triggers the frame grabber s User Triggers the CAM CMOS 2K LS by taking ExSynch Camera Input Low Line Ends LinePeriod XFR after LineValid Camera Output Goes High User may set LinePeriod vvith Softvvare VVhen the User takes
21. erdue and will become even more necessary as data rates continue to increase Increasingly diverse cameras and advanced signal and data transmissions have made a connectivity standard like Camera Link a necessity The Camera Link interface will reduce support time as well as the cost of that support The standard cable will be able to handle the increased signal speeds and the cable assembly will allow customers to reduce their costs through volume pricing Channel Link is a Widely Used Signaling Method National Semiconductor initially developed the Channel Link technology for flat panel displays and based it on the LVDS physical layer This technology was then extended for general purpose data transmission Channel Link is built up of sets of driver and receiver pairs Each driver set accepts 28 single ended data signals and an accompanying single ended clock This data is serialized 7 1 and the resulting four data streams and clock signal are driven over five LVDS pairs The receiver accepts these five signals and drives the full 28 bits and clock signal to its output pins as shown in Figure A 1 Channel Link s transmission method requires fewer conductors to transfer data and allow for a smaller connector which is important for compact cameras such as the CAM CMOS 2K LS The Channel Link chipset provides data transmission rates up to 2 38 Gbit sec Channel Link uses LVDS a Low Voltage Differential Signaling Standard Low Voltage Diffe
22. he camera ensuring that the correct values and signals are present Product Support If after troubleshooting your camera and you still have problems collect the following data about your application and situation and call Fairchild Imaging Customer Support Note You may want to photocopy this page to fax to Fairchild Imaging 408 735 7352 Your Name Company name Your phone number Your Fax number Product Model Number e g CAM CMOS 2K LS Camera serial number Detailed description of problem encountered Please attach description with as much detail as appropriate When calling Fairchild Imaging 1 800 325 6975 ask for Customer Support Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev 35 of 42 REFERENCE A Camera Link Introduction Camera Link is a Protocol that is Implemented in Channel Link Hardware Camera Link is a communication interface for machine vision The interface extends the underlying technology of Channel Link to provide a specification more useful in this application For years the scientific and industrial digital video market has lacked a standard method of communication Both frame grabbers and camera manufacturers developed products with different connectors making cable production difficult for manufacturers and very confusing for consumers A connectivity standard between digital cameras and frame grabbers has been long ov
23. http www machinevisiononline org Camera Control Signals Four LVDS pairs are reserved for general purpose camera control They are defined as camera inputs and frame grabber outputs Camera manufacturers can define these signals to meet their needs for a particular product In the case of the Fairchild Imaging CAM CMOS 2K LS the signals are e ExSync Line Synchonization Input generically Camera Control 1 CC1 ElectShutter Exposure Control Input generically Camera Control 2 CC2 e Spare unused generically Camera Control 3 CC3 Spare unused generically Camera Control 4 CC4 Communication Two LVDS pairs have been allocated for asynchronous serial communication to and from the camera and frame grabber Cameras and frame grabbers should support at least 9600 baud These signals are SerTFG Differential pair serial communications to the frame grabber SerTC Differential pair serial communications to the camera The serial interface will have the following characteristics one start bit one stop bit no parity and no handshaking It is recommended that frame grabber manufacturers supply both a user interface and a software application programmming interface API for using the asynchronous serial communication port The user interface will consist of a terminal program with minimal capabilities of sending and receiving a character string and sending a file of bytes The software API will provide functions to enumerate boa
24. orce on the lens extender tube barrel or torque or otherwise place force on any of the connectors on the back of the case A L mounting bracket figure 4 4 is available contact your Fairchild Imaging representative for more details Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 26 of 42 4 2 Lensing The CAM CMOS 2K LS as shipped from the factory accepts universal manual F mount lenses that are available from a number of suppliers The standard 0 050 Nikon mounting ring is shown in Figure 4 3 below Figure 4 3 below shows that the lens extender tube can be detached by unscrewing it so that an optional C mount can be installed If you wish to do this please contact your Fairchild Imaging Sales representative With the lens mount lens extender tube and its lockring removed the front surface of the camera is seen as a square with a large threaded hole in the center The z distance from the surface of the square to the top of the sensor is 13 72mm 4 3 Lens Mount Extender Tube Figure 4 3 1 GROOVE INSIDE OF TUBE STD THREAD INSERT 003 TYP DEPTH 56 PITCH FOR LIGHT BAFFLING ONLY Figure 4 3 2 M58 X 0 75 M58 X 0 75 10 FULL THREADS 10 FULL THREADS 031 X 45 031 X 45 LT DIAMOND KNURL LT DIAMOND KNURL Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 28 of 42 4 4 Mechanical Drawing of Available Camera Face Mounting L Bracket Contact your F
25. rds and send or receive a character string Power KTM Per the standard power is not provided on the CameraLin connector of the camera Power is supplied through the Hirose connector Port Assignments See Tables 3 4 1 for the options of using the CAM CMOS 2K LS with CameraLink In CameraLink a port is defined as an 8 bit word as shown in Figure A 2 The least significant bit LSB is bit 0 and the most significant bit MSB is bit 7 The full configuration CameraLink utilizes eight ports A through although the CAM CMOS 2K LS Model Camera only requires three again as shown in Figure A 2 For More Information on CameraLink Refer to the Automated Imaging Association s website at http www machinevisiononline org Camera Link Connections the MDR 26 Pin Connector The 3M MDR 26 connector was selected for its robust design and reputation for success with high frequency Channel Link transfer rates over several years of experience The MDR 26 connector is addressed in Section 2 2 Figure A 1 Channel Link Operation 21 6 Gbps p mws J gt rs a 2 esce be m sus J gt TTL CMOS Data 28 bit 19 82 ejeq gt TR Dasqovs g Rex HERI esi SOWO ILL Figure A 2 Data Routing for Base Medium and Full Configurations Camera Hardware Routing PC Memory 8 ht H H s BYTE amp 12bit OBD11 55 Port G E GE 50 67 4 BYTE 7 12 bil 0
26. rential Signaling LVDS is a high speed low power general purpose interface standard The standard known as ANSI TIA EIA 644 was approved in March 1996 LVDS uses differential signaling with a nominal signal swing of 350mV differential The low signal swing decreases rise and fall times to achieve a theoretical maximum transmission rate of 1 923 Gbps into a lossless medium The low signal swing also means that the standard is not dependent on a particular supply voltage LVDS uses current mode drivers which limit power consumption The differential signals are immune to up to 1 V common volt noise Video Data Signals The Channel Link technology is integral to the transmission of video data Image data and image enable signals are transmitted on the Channel Link bus Four enable signals are FVAL Frame Valid FVAL is defined HIGH for valid lines not used by the CAM CMOS 2K LS LVAL Line Valid LVAL is defined HIGH for valid pixels LineValid Output in the CAM CMOS 2K LS DVAL Data Valid DVAL is defined HIGH when data is valid Always High in the CAM CMOS 2K LS Spare A spare has been defined for future use not used by the CAM CMOS 2K LS In the general specification all four enable signals must be provided by the camera on each Channel Link chip All unused data bits must be tied to a known value by the camera TM For more information on image data bit allocations refer to the official CameraLin specification
27. reset amp integration cycle to be read out in the next period n 1 is initiated by ExSync returning high integration begins when reset is complete a time treset after ExSync goes high and continues for the remainder of tj ineperiod The user can therefore shorten integration time by increasing above 5 The line period is set by the user by returning ExSync low thereby initiating the next n 1th readout cycle 6 The minimum time that ExSync can be held low is tyingync as Shown above 7 Integration is cut off when the user takes ExSync low again as shown in the waveforms above 8 The line period must be greater than or equal to treadout plus t which sets maximum line rate to lines sec 9 If the user brings the ExSync Camera Input low prior to tReadout after ExSync goes low then the CAM CMOS 2K LS delays initiation of the n 1th readout cycle until tReadout txer has elapsed after ExSync last went low Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 22 of 42 4 LinePeriod gt n nti tReset3 gt tintegration user set with command software t gt tHoldHigh gt I vinsyne gt tsetup ExSync Camera Input LineValid 1 Camera Output tReadout 2048 Clock Cycles Notes specific to this mode 1 The reset and integration cycle is initiated by ExSync being taken low by the user this has the effect of starting integration as soon
28. sed upon a 2K CMOS linear sensor that utilizes an active reset technology to obtain high performance in low light applications while operating at very high data rates Two versions of this camera are available RDI Read During Integration mode runs at line rates up to 38 KHz Read noise for this version is 9e 5 7DN in 12 bit data MRDI Multiple Read During Integrate mode has a maximum read noise of 0 4e at a maximum line rate of 2 9KHz The CMOS linear sensor that is used in this camera has a unique feature that allows gain selectability at the pixel level The gain of each pixel can be switched between high or low gain In the high gain mode the noise is minimized while in the low gain mode the dynamic range is maximized The 12 bit output of this camera line utilizes CameraLink and will provide data at 80 MHz 40 MHz per output The camera offers features such as anti blooming and programmable gain and offset It is packaged in a very compacted and rugged housing that contains a standard M58 x 0 75 base lens thread Optional Nikon F or C Mount lens adapters are available Programmability e Simple menu based configuration for selection of gain calibration test patterns operational control and diagnostics CameraLink camera PC communications Usability e Programmable gain offsets and controls e Internal flat field correction e Easy integration plug compatible Camera Link interface e Exposure control
29. t changing the baud rate select the appropriate single digit number and hit enter LED This command allows you to change the color When selecting the option you need to enter the appropriate single digit number and hit enter Your screen will be blank during this command You can input one of the following Value Function 0 Amber 1 Green 2 Red 3 Off GDA This command allows you to show all of the DACs Digital to Analog Converter When selecting the option you need enter the appropriate single digit number and hit enter The camera returns 3 Gain F_odd 0 490V 8 GainF_even 0 490V 2 GainC_odd 0 235V 6 GainC_even 0 235V 4 Offset_odd 1 199V 7 Offset_even 1 199 1 CML_odd 1 425V 5 CML_even 1 425 SDN This command allows you to select one of the above DAC numbers and change its value Example SDN enter 486 enter enter value between 0 1023 GDN This command allows you to verify what you just did under the SDN command Example you would input the following GDN enter 1 The camera returns a value between 0 1023 SAP Store in Flash both correction memories all registers and DAC values Value Function Store all parameters 0 Default factory calibrate 1 User 2 User RAP Load from flash to camera Recall all parameters Value Function Default factory calibration User User A o SBS Value Function Set bit shift 0 12 bit 1 10 bit 2 8 bit CAO Adjust analog video offset mismat
30. tance from the second principal point to the second focal point The back focal length BFL is the distance from the image side of the lens surface to the second focal point The object distance OD is the distance from the first principal point to the object Figure 4 9 1 front focal point rear focal point pese E TA TEE TN Um 1 liaud 9 3 DNE tms T PEUT HET lt 5 La principal points Note location of object and image relative to front and rear focal points SECTION 5 5 1 5 2 5 3 5 4 Handling Instructions A Electrostatic Discharge The Fairchild Imaging LNL2048S is a metal oxide semiconductor MOS device and as all such devices has some limited inherent susceptibility to electrostatic discharge ESD All reasonable and customary design steps have been taken to provide ESD protection circuitry The CMOS technology provides greater immunity to ESD problems than do CCD devices Electrostatic charge placed at the sensor could cause charging of the chip which in some situations might not be readily dissipated and minor impact on performance might be temporarily experienced Therefore do not insert your finger or any other object into the lens mount barrel A Preventing ESD Damage Please be certain to ground yourself prior to handing the camera Ensure that your working environment is grounded including conductive floor
31. upport be sure to make a note of the camera settings and the frame grabber settings you are using You should also have saved captured live images Customer support will frequently request that you e mail copies of these captured images See Section 7 Connections Double check the pin outs of your cable Make sure that the connections to the back of the camera and to your PC are secure Power Supply Voltage Make sure and measure that you have 5 0 volts at the camera connector Noisy Power Supply Check your power supply voltage output s Check also the noise and ripple specification of your power supply and measure both at the power supply output Everything Seems To Be Working But No Image Remove the cover from your PC and reset all the cards into the Mother board Sometimes when you move your PC cards inside the PC work themselves loose Data Clocking Output Signals Verify the presence of all data clocking and output signals Horizontal Lines or Patterns in Output To eliminate this type of problem use a DC light source No Output Or Non Specification Output If your camera has no output or is putting out an unspecified signal unkown to you Check the length of your cable If it is unnecessarily too long and is also not shielded your cable most likely is picking up radiated noise and is inputting the noise into your camera Vertical Patterns in Output Sometimes you might see patterns in your output Most likely these are ca
32. used by dirt on your lens or possibly contaminants on the sensor window Clean both to remove all contaminants Images are too Bright or too Dark The causes to this problem should be obvious but many times are overlooked If your image that you have captured is too dark or light then experiment with the lens aperture Sometimes if you lengthen or shorten the exposure time this will effect your image Remember your camera control command CPG This command allows you to either increase or decrease pixel gain which can have a dramatic impact on your image Lastly don t forget to check your lighting Images Look Noisy There are several things that can cause this condition Remember our camera command CPG Work with this command Try increasing and decreasing pixel gain until you find the right setting Look for an increase in dark current If the ambient temp increases this will cause noise in the image Look at your light source If your light source is AC instead of DC this will make the image look noisy Also if the object you are inspecting has different surface textures this could produce an image that may look noisy Bits That Do Not Change Value If you see that data bits are not changing values after you have changed them then the first thing to check is that the camera is not saturated by preventing light from entering Next disconnect the Camera Link cable from the camera Check the digital signals at the output of t
33. while LineValid is high as shown above ou Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 24 of 42 CAM CMOS 2K LS tyeR 300nsec initiation 775 Readout 25 6nsec tReset2 4usec tReset3 5HSeC MinSynch 1 425usec Hold 1 425usec t 875ns x2p Fairchild Imaging CAM CMOS 2K LS Line Scan Camera User s Manual Rev Ce 25 of 42 Mechanical and Optical Guidance Figure 4 1 394 10 040 1 02 03 915 99 45 33 350 85 09 1 150 29 21 900 22 86 125 3 18 1 837 46 65 1 375 34 93 1 2X 4X NOTE 0 CLEARANCE FROM LENS MOUNT TO CHIP ASSEMBLY CHIP TO LENS MOUNT 4 1 Camera Dimensions and Mounting Facilities The CAM CMOS 2K LS camera housing is manufactured with high precision Planar parallel and angular sides guarantee precise mounting with high repeatability The CAM CMOS 2K LS is equipped with four M4 mounting holes on the front and two M4 mounting holes on one side and on the bottom of the camera N Use caution in the following ways to avoid stripping threads or stressing the case e Use only M4 screws do not try other metric approximation size screws e Do not over torque do not over tighten screws beyond the depth of the holes do not otherwise force screws or create a bending moment with them e Use caution in crafting mounting brackets so that you do not interfere with the lens or exert f
Download Pdf Manuals
Related Search