JAI LT-200CL User Manual
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JAI LT-200CL User Manual

3cmos high speed color line scan camera
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User's Manual
LT-200CL
3CMOS High Speed Color
Line Scan Camera
Document Version: Ver.1.0
LT-200CL_Ver.1.0_May2011
1031E-1105

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Summary of Contents for JAI LT-200CL

  • Page 1 User's Manual LT-200CL 3CMOS High Speed Color Line Scan Camera Document Version: Ver.1.0 LT-200CL_Ver.1.0_May2011 1031E-1105...
  • Page 2 JAI Ltd., Japan and may only be used by the purchasers of the product. JAI Ltd., Japan makes no warranty for the use of its product and assumes no responsibility for any errors which may appear or for damages resulting from the use of the information contained herein.
  • Page 3 LT-200CL Supplement The following statement is related to the regulation on “ Measures for the Administration of the control of Pollution by Electronic Information Products “ , known as “ China RoHS “. The table shows contained Hazardous Substances in this camera.

  • Page 4: Table Of Contents

    Compatibility of trigger modes and functions ..........34 Configuring the camera ................... 35 7.1. RS-232C control ..................35 7.2. LT-200CL Command list ................36 Functions listed alphabetically by command acronyms ..........41 8.1. Command AH – One-push AWB shutter ............41 8.2.
  • Page 5 Command TR – Trigger Mode ............... 50 8.40 Command TS – Test pattern ................ 50 8.41 Command WB – White Balance ..............50 Camera Control Tool for LT-200CL ..............51 9.1. Software Install ..................51 9.2. Open the Control Tool ................51 9.3.

  • Page 6: General

    LT-200CL 1. General LT-200CL is a 3CMOS line scan camera using three 2048 pixel line sensors mounted on a prism, for the R, G and B channels. It operates with an 80 MHz pixel clock, resulting in a maximum line rate of 30,383 lines per second.

  • Page 7: Locations And Functions

    LT-200CL Locations and functions 4.1. Main unit ① ④ ③ ⑨ POWER/ TR IG ⑤ W.B. DC IN / TR IG ⑨ ⑧ ⑦ ② ⑥ Fig. 1 Location of external features Camera Link base connector (1) (*Note1) Camera Link medium connector (2) (*Note1)

  • Page 8: Rear Panel And Indicators

    LT-200CL 4.2. Rear Panel and indicators Rear panel indicator LED Push button DIP switch Fig.2 Rear panel  LED There is a multi-color LED on the rear panel of the camera. It has the following functions: Green (Steady) Operating, but not receiving external trigger input Green (Flashing)

  • Page 9: Input And Output (Connectors, Signals And Circuits)

    Cables, transmission systems and frame grabbers/acquisition boards that do not comply with the Camera Link standard may work with this camera, but JAI Camera Solutions cannot be held responsible for loss in performance or damage of equipment, including the camera.

  • Page 10: Camera Link Output

    11,24 12,25 13,26 Shield The LT-200CL follows the Camera Link standard in all respects. Please refer to the Camera Link version 1.1 specifications for detailed information on bit assignments of 24-bit RGB and 30-bit RGB output. 5.3. Camera Link output RD9～RD0 : R Channel Camera Data(RD9=MSB, RD0=LSB)
  • Page 11 LT-200CL Port D0 × × Port D1 × × Port D2 × × Port D3 × × Port D4 × × Port D5 × × Port D6 Tx27 × × Port D7 × × Port E0 × Port E1 ×...

  • Page 12: Input And Output Circuits

    LT-200CL 5.4. Input and output circuits 5.4.1 Trigger input The External Trigger signal can be applied either through the Camera Link connector or at pin 10 of the 12-pin Hirose connector. The command to change this setting is TI (Trigger Input).

  • Page 13: Functions And Operation

    6.2. Sensor layout and output timing The LT-200CL uses newly developed CMOS sensors which have 2048 effective pixels. Light received on photodiodes is converted to electronic signals and these signals are handled in a correlated double sampling circuit, analog gain circuit and analog digital converter circuit.

  • Page 14: Key Functions

    LT-200CL 2544 AP+OB=2064 LVAL DVAL Effective Pixels Period 2048 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Dat a 1CLK=12. 5ns DM : Dum m y or Tt r ans f er _dat a Pi xel s...

  • Page 15: Een (Exposure Enable) Function

    LT-200CL Line rate > Exposure time Line rate (LR) = 20000 Tri gger ( I nternal /External ) Exposure (Rch) =22000 Exposure R Exposure G Exposure B In this case, although the expsore time is set at 22000, but the actual exposure time is limited by the line rate, 20000.

  • Page 16: Auto Interval Mode

    LT-200CL AUTO RESET =OFF t> 52ms ② ③ ① LVAL ① ③ ② AUTO RESET = ON t> 52ms ① ② ③ ① LVAL ② ③ Fig.13 Auto rest mode function 6.3.5 Auto Interval Mode In the shutter select mode, if the external trigger mode is used, when the trigger interval...

  • Page 17: White Balance

    LT-200CL If the external trigger is input before the EEN generated by the internal trigger is completely output, the system generates the internal trigger again. In this case, jitter may occur. Fig.16 If the external trigger is coincident with the timing of the internal trigger 6.3.6...

  • Page 18: Gain Control

    6.3.7 Gain control The LT-200CL has two ways of setting gain - one for the master tracking and the other for individual channel adjustment. Each setting also has two analog gain modes - one is the GAIN LOW and the other is the GAIN HIGH. When the Gain Low is selected, gain for each channel can be adjusted from -4dB to +6dB against the reference of 0dB which is the default output setting.

  • Page 19: Setup(Black) Level

    LT-200CL SGR=1 GM=1 SGR=0 SGG=1 SGG=0 GAIN = LOW GAIN = HIGH GAR= SGB=1 SGB=0 GAG= GAB= Gr een Bl ue + 2 0 d B 1400 GAR= GAG= GAB= Gr een Bl ue + 1 4 d B 1400...

  • Page 20: Prnu (Pixel Response Non-Uniformity ) Correction

    LT-200CL The following drawing shows the characteristics of Knee Point 890LSB and Knee Slope 1000h. 1279 1023 1/16 [100%] Knee Point Knee Point = 37Ah (890) Knee Slope = 1000h (1/16) In this case : Maximum Value is 968 LSB.

  • Page 21: Dsnu (Dark Signal Non-Uniformity) Correction

    LT-200CL 6.3.11 DSNU (Dark Signal Non-Uniformity) correction DSNU (Dark Signal Non-Uniformity) is, as the name implies, a non-uniformity of offset level of each pixel, which is not dependent on the incoming light. Before correction: dark signal non-uniformity from pixel to pixel...

  • Page 22: 6.3.13 Binning

    LT-200CL Color shading correction(SDR=1) compensates red and blue signals to match with green signal characteristics. The following drawings show the concepts for flat and color shading corrections. Shading correction tracking Individual shading correction the green channel per channel Fig.25 Flat shading correction Fig.26...

  • Page 23: Windowing (Sro=2)

    1023 1024 Fig.29 Windowing reads out only 2048 pixels at the center 6.3.16 Test pattern generator LT-200CL has four test pattern generators. In the following drawings, figures shown in ( ) are for 8 bits output. Color bar Si gnal 白...

  • Page 24: Operation Modes

    Fig.32 Multi burst test pattern White 890( 222) Signal (RGB) 32( 8) DVAL 2048 Fig.33 White test pattern 6.4. Operation modes The LT-200CL has the following operation modes. Trigger Mode Trigger origin Command Description Command Description TR=0 No-shutter TG=0 Internal...

  • Page 25: No-Shutter Mode With Internal Trigger

    LT-200CL 6.4.1 No-shutter mode with internal trigger In this mode the camera does not accept an external trigger signal, as the line rate is generated from an internal clock (user programmable, command LR). The exposure time is directly proportional to the line rate . This mode is used when there is no external trigger signal available, and the speed of the object is fixed or can be pre-determined.

  • Page 26: No-Shutter Mode With External Trigger

    LT-200CL Fig.35 No-shutter mode / Binning/ Internal Fig.36 No-shutter /Sub-sampling and Window/ Internal 6.4.2 No-shutter mode with external trigger In this mode, the exposure time is directly proportional to the line rate. The line rate is generated externally by a trigger signal. This mode is used when an external trigger signal is available, e.g.
  • Page 27 LT-200CL Important note:  When the one-push white balance has been initiated and the rear panel LED shows orange, the camera must receive continuous external trigger pulses corresponding to the frequency and duty cycle used in the application.  Minimum trigger interval...
  • Page 28 LT-200CL Fig. 38 No-shutter mode /Binning/ External Fig.39 No-shutter mode /Sub-sampling and Window/ External...

  • Page 29: Shutter-Select Mode With Internal Trigger

    LT-200CL 6.4.3 Shutter-select mode with internal trigger This mode allows the user to have full control of the line rate and the exposure time individually, by programming separate timing generators. Subsequently the camera does not accept an external trigger signal in this mode.
  • Page 30 LT-200CL Fig.41 Shutter-select mode /Binning/ Internal Note: The largest exposure time is output as EEN. Fig.42 Shutter –select mode/Sub-sampling and Window/ Internal Note: The largest exposure time is output as EEN.

  • Page 31: Shutter-Select Mode With External Trigger

    LT-200CL 6.4.4 Shutter-select mode with external trigger This mode allows the user to have full control of the exposure time, by programming a timing generator, while the line rate is controlled by an external trigger signal. The camera can accept an external trigger through the Camera Link connector or though the 12-pin Hirose connector.
  • Page 32 LT-200CL Fig.44 Shutter select mode /Binning /External Note: The largest exposure time is output as EEN. Fig.45 Shutter select mode / Sub-sampling_Windowing/ External Note: The largest exposure time is output as EEN.

  • Page 33: Pulse Width Control (Pwc) Mode

    LT-200CL 6.4.5 Pulse width control (PWC) mode In this mode, the user has full control of both the line rate and the exposure time of each line via the External Trigger input. At the rising edge of the External Trigger signal, the exposure is initiated, and at the falling edge the exposure is terminated and read out.
  • Page 34 LT-200CL Fig.47 PWC mode /Binning Fig.48 PWC mode /Sub-sampling and Window...

  • Page 35: Compatibility Of Trigger Modes And Functions

    LT-200CL 6.4.6 Compatibility of trigger modes and functions Trigger Image output format Gain Offset Full Master Mode Origin Binning Windowing Gain Low Gain High Individual resolution sampling tracking Internal No-Shutter ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ External Internal Shutter ◎...

  • Page 36: Configuring The Camera

    7.1. RS-232C control All configuration of the LT-200CL camera is done via the RS-232C port on the 12-pin HR connector or via Camera Link. The camera can be set up from a PC running terminal emulator software, or using JAI's camera control software.

  • Page 37: Lt-200Cl Command List

    The camera answers: 02 Bad Parameters!!<CR><LF> To see firmware number. VN?<CR><LF> To see camera ID. It shows the manufacturing lot number. ID?<CR><LF> 7.2. LT-200CL Command list Command Name Format Parameter Remarks A – General settings and useful commands. EB=[Param.]<CR><LF> 1 Echo Back...
  • Page 38 LT-200CL C - Line Rate, Exposure Full resolution 2633 to 1347584clocks LR=[Param.]<CR><LF> 1 Line Rate Sub-sampling/window Available when TG=0 LR?<CR><LF> 1609 to 823296 clocks - 1 clock = 12.5ns One-push auto line 0=Activate one-push auto AR=[Param.]<CR><LF> Available when TG=0 rate set...
  • Page 39 LT-200CL 0=Off 1=Color Bar TS=[Param.]<CR><LF> 3 Test Pattern 2=Gray Pattern 1 Off at power up TS?<CR><LF> 3=Gray Pattern 2 4=White SRO＝［Param.］ 0=off 4 Sensor read out <CR><LF> 1=Sub-sampling SRO？<CR><LF> 2=Windowing E - Gain, white balance and signal settings Gain Level GA=[Param.]<CR><LF>...
  • Page 40 LT-200CL BLR?<CR><LF> Individual 0 to 127 Black Level – BLB=[Param.]<CR><LF> Master Tracking -64 to 63 Individual 0 to 127 Blue BLB?<CR><LF> BLM=[Param.]<CR><LF> 0=Master Tracking 15 Black Level mode BLM?<CR><LF> 1=Individual KN=[Param.]<CR><LF> 16 Knee On/Off 0=Off, 1=On KN?<CR><LF> KSR=[Param.]<CR><LF> 17 Knee Slope – Red 0 to 65535 KSR?<CR><LF>...
  • Page 41 LT-200CL after pixel gain not been finished yet. correction 1=Succeeded. 2=Error1 – image was too bright. 3=Error2 s too bright.n has no 4=Error3 – Timeout-error occurred. 0=Off (Bypass) Select pixel black PBC=[Param.]<CR><LF> 1=Factory area correction mode PBC?<CR><LF> 2=User area Run pixel black...

  • Page 42: Functions Listed Alphabetically By Command Acronyms

    LT-200CL Functions listed alphabetically by command acronyms 8.1. Command AH – One-push AWB shutter This command controls a white balance by setting an appropriate shutter speed for each channel. Settings: 0 to initiate Applicable modes: TR=1 Shutter select mode Associated functions:...

  • Page 43: Command Arst - Auto Reset Mode

    LT-200CL Command ARST – Auto reset mode With this command, two function modes can be selected. One is the Auto Reset Mode and the other is the Auto Interval Mode. For the details, please refer to 6.3.4 Auto Reset mode and 6.3.5 Auto Interval Mode.

  • Page 44: Command Bi - Binning (Horizontal Only)

    LT-200CL Command BI – Binning (Horizontal only) This function reduces the number of pixels to 256 without affecting the line rate. Two adjacent pixels are combined at the output stage and read out as one pixel. Sensitivity is doubled as a result of binning. Refer to Chapter 6.3.11 Binning...

  • Page 45: Command Ga - Gain Level Master / G Channel

    LT-200CL Refer to 6.3.2 Electronic shutter (Exposure)(Command PER,PEG,PEB) for further details. 8.14 Command GA – Gain level master / G channel Adjust the master gain or G channel gain in accordance with gain mode (GM). GM=0 Master tracking Adjust as master gain...

  • Page 46: Command Lr - Line Rate (Scan Rate)

    LT-200CL 8.20 Command LR - Line Rate (Scan Rate) This function is used only when there is no external trigger pulse (e.g. from an encoder) available. It allows the user to program the line rate, in order to match the speed of the object being scanned.

  • Page 47: Command Pbs - Inquire The Status Of After Pixel Black Correction

    LT-200CL 8.24 Command PBS – Inquire the status of after pixel black correction This command returns the status of the pixel black correction, with the following parameters: 0=Shading correction not completed yet 1=Successful 2=Error 1 – Image was too bright 3=Error 2 –...

  • Page 48: Command Pgr - Run Pixel Gain Correction And Store In User Area

    LT-200CL 8.29 Command PGR – Run pixel gain correction and store in user area This command initiates the flat-field correction function, and stores the settings in the user area. Settings: 0= Run PRNU correction and store to user area Associated functions:...
  • Page 49 LT-200CL Individual shading correction per channel Important note:  Depending on the optics and/or illumination used together with the camera, it may not be possible to fully compensate for shading. Operating procedure for individual R, G and B channel shadings correction: 1.

  • Page 50: Command Sds - Request Status After Executing Shading Correction Command

    LT-200CL 5. If desired, set command PGR to 0 to activate flat-field (pixel gain) correction to correct for pixel response non-uniformity. 6. Again set SDR=1 after running the flat-field (pixel gain) correction Refer to chapter 6.3.10 Shading correction for further details.

  • Page 51: Command Tp - Trigger Polarity

    LT-200CL 8.38 Command TP – Trigger polarity Settings: 0=Active Low (factory default) 1=Active High 8.39 Command TR – Trigger Mode Selects the trigger mode of the camera. Depending on the mode used, it allows the scan rate to either be programmed by an internal timing generator or by an external trigger pulse.

  • Page 52: Camera Control Tool For Lt-200Cl

    Execute LT-400CLv100x86in the downloaded file. The setup program starts and continues according to the screen instructions. Note: Line scan cameras, the LT-400CL and LT-200CL use the same control tool. When the camera is connected, the functions are followed by the connected model.

  • Page 53: Communication Window

    9.4. Communication Window The Communication Window is used to connect the Camera Control Tool with the JAI camera. Depending on the camera there are 2 possible ways to communicate with a JAI camera. RS-232C Select the communication port, where the serial cable is connected from the list box in the „Communication Port‟...
  • Page 54 LT-200CL Auto Search Click the auto button to search for a camera on communication port 1 to 16. The camera control program automatically sends a camera request on every communication port. The user is prompted to use a communication port if a camera answers the request.

  • Page 55: Exposure/Trigger/Format Control Window

    LT-200CL Settings, Factory Settings and the available User Areas. EEPROM Current Area. Click the „Get Area‟ button to read the power up settings area number. 9.5. Exposure/Trigger/Format Control window In this window, the following functions can be set. Exposure Trigger...
  • Page 56 LT-200CL 4. The newer JAI cameras always start up with the last used user area (but for some old models it will start up with the last saved user area.) 5. The Camera Control Tool saves the last used settings (not the user area), which don‟t have to be the same as for the last saved user area.

  • Page 57: 10. External Appearance And Dimensions

    LT-200CL 10. External appearance and Dimensions 4-M3 depth 4.5 (depth 0.18) ( 7) 25. 5 +0. 012 ( 0. 28) ( 1. 00) φ 4 depth3. 5 ( depth0. 14) 32. 5 ( 2. 36) ( 1. 28) ( 3. 54) 6.
  • Page 58 LT-200CL 4-M3 depth 4.5 (depth 0.18) 25.5 +0.012 φ4 depth3.5 (0.28) (1.00) (depth0.14) 32.5 (2.36) (1.28) (3.54) 4-M3 depth3.5 (2.76) (depth0.14) (3.54) (0.25) (0.28) POWER/ TR IG W.B. DC IN / TR IG +0.012 Nikon F-mount ×6 depth3.5 32.5 (depth0.14) (1.28)

  • Page 59: Specifications

    LT-200CL Specifications 11.1 Typical data Scanning system Line Scan Synchronization Internal 3 prism-mounted custom CMOS sensors Effective pixels : 2048 pixels per sensor Image Sensor Pixel Size : 14.0μm ×14.0μm Effective image length : 28.672 mm Pixel clock 80.00 MHz...
  • Page 60 Typical: 450mA (No-shutter/internal, lens cap on) Power Max.: 480mA (No-shutter/internal, at saturation level) Note: Use a power supply with more than 3A current LT-200CL-M52 M52 lens mount ( Standard) Lens mount LT-200CL-F Nikon F-Mount (Factory option) Maximum allowed rear protrusion on lenses: 13 mm M52 mount/Nikon F-Mount : 46.5mm...

  • Page 61: 11.2 Spectral Sensitivity

    Hirose 12-Pin: HR10A-10R-12PB(71) Note1: This specification can be satisfied when the recommended connector and cable are used. Note2: The above specifications are subject to change without notice. 11.2 Spectral sensitivity LT-200CL Spectral response Fig.51 Spectral response including prism and sensors...

  • Page 62: Appendix

    Remove power from the camera when changing switch settings. Typical Sensor Characteristics The image sensors used in the LT-200CL are CMOS type and have been chosen for their superior performance. There may, however, always be artifacts visible in the scanned image originating from pixel imperfections in the camera.

  • Page 63: Exportation

    When exporting this product, please follow the export regulation of your own country. References 1. This manual for LT-200CL can be downloaded from www.jai.com 2. Datasheet for LT-200CL can be downloaded from www.jai.com 3. The camera control software can be downloaded from www.jai.com...

  • Page 64: Change History

    LT-200CL Change History Month/Year Revision Changes May 2011 New release...

  • Page 65: User's Record

    Company and product names mentioned in this manual are trademarks or registered trademarks of their respective owners. JAI A-S cannot be held responsible for any technical or typographical errors and reserves the right to make changes to products and documentation without prior notification.

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