Color Line Scan Camera SK22800CJRC-XC

Transcription

1 Color Line Scan Camera SK22800CJRC-XC 3 x 7600 pixels, 9.3 µm x 9.3 µm, 30/50 MHz pixel frequency Camera Sensor Type SK22800CJRC-XC Triple Line Sensor ILX146K 1 2 Pixel number 3 x 7600 (R-G-B) Pixel size 9.3 µm x 9.3 µm Pixel spacing 9.3 µm Line spacing (R-G-B) 9.3 µm Active length Anti-Blooming Integration Control CDS 1 Pixel frequency Line frequency max Line frequency min mm no no yes 30 / 50 MHz 6.17 khz 0.05 khz Integration time max 20 ms 2 Integration time min Dynamic range Spectral range Video signal ms 1:1000 (30 MHz) nm 24-bit (3 x 8-bit) Interface: Interface Voltage +5 V, +15 V Power consumption 7 W Casing (W x H x D) 84 mm x 120 mm x 46 mm Objective mount M72 x 0.75 Weight 0.42 kg Working temperature +5 C to +45 C 1) CDS = Correlated Double Sampling. Noise-reduction technology, increase of photosensitivity. 2) Longer exposure times are possible in trigger mode "External Trigger" Smart line scan camera SK22800CJRC-XC Interface: with Focus adapter FA26XC-S55 Extension ring ZR55-15 Lens adapter AC46-55 Macro lens inspec.x L 5.6/105 ß-0.76 Contents Section Page Section Page 1. Introducing the SK22800CJRC-XC Color Camera 2 2. Connections and I/O Signals 2 3. Interface 3 4. Camera Control and SkCLConfig Gain / Offset and White Balance To Set and Read Camera Parameters 5 5. RGB Sensors: 2D Imaging and Pixel Allocation 6 6. Control Signals and Timing Diagram 7 7. Sensor Performance Specifications 8 8. Dimensions Warranty Accessories 12 SK22800CJRC-XC Kieler Str. 212, Hamburg, Germany Tel: Fax: info@sukhamburg.de

2 1. Introducing the SK22800CJRC-XC Color Line Scan Camera The successful use of the line scan camera requires that the complete optical system is properly set up, especially the location of the illumination, the degree of focus of the objective and the aperture setting. The most critical factor is the perpendicular alignment of the sensor axis either with the object to be measured or the direction of its relative travel when scanned. The scan velocity must be synchonized with the line rate of the camera and is influenced by the exposure time and by the magnification. Schäfter+Kirchhoff supplies the operating program SkLineScan for certified grabber boards, including Teledyne DALSA X64 XCelera-CL, µenable III Silicon Software, National Instruments PCI-1428, and the Matrox Solios. The zoom function of the SkLineScan oscilloscope display of the line camera signal accelerates the optimal parameterization of the camera and alignment of the optical system. SkLineScan can be customized for a particular grabber board on request. Data acquisition requires a grabber which conforms to the CameraLink TM Base configuration. Exposure time and line rate of the camera can be controlled internally by serial commands or externally via the grabber board. The configuration program SkCLConfig allows the full parameterization of the camera settings, such as gain, offset and pixel frequency, via the CameraLink TM serial port interface. SkCLConfig uses the clser ***. dll driver that is supplied with the CameraLink grabber board and personalized applications can also be developed using the SDKs available from the grabber manufacturer. The cameras are supplied precalibrated, with factory settings for gain and offset that can be changed according to requirements using the supplied software. Significant losses in signal quality do accrue when the gain or offset parameters are set incorrectly. The gain and offset values in current use are stored in the camera in non-volatile memory and are immediately available when the camera is reactivated or switched on. 2. Connections and I/O Signals Data Power Data Connector: Mini-D ribbon, female 26-pin Data Connector: Mini-D ribbon, female 26-pin Signal Pin Pin Signal Power Connector: Hirose series HR10A, female 6-pin Power Connector: Hirose series HR10A, female 6-pin + 5 V ± 5% ca. 420 ma (30 MHz Clock) ca. 470 ma (50 MHz Clock) +15 V ± 5% ca. 350 ma Signal Pin Signal Pin + 15 V V V 2 GND V 3 GND 6 GND 1 o o 14 GND X0-2 o o 15 X0+ X1-3 o o 16 X1+ X2-4 o o 17 X2+ Xclk- 5 o o 18 Xclk+ X3-6 o o 19 X3+ SerTC+ 7 o o 20 SerTC- SerTFG- 8 o o 21 SerTFG+ CC1 9 o o 22 CC1+ CC2+ 10 o o 23 CC2- CC3-11 o o 24 CC3+ CC4+ 12 o o 25 CC4- GND 13 o o 26 GND Page 2

3 3. Interface Camera control The CameraLink interface provides four LVDS signals dedicated to camera control (CC1 to CC4). Only CC1 is used by the SK22800CJRC-XC to synchronize with external events. Signal Name I/O Type Description TRIG1 I RS644 CC1 - Synchronization input (SOS) I = Input, O = Output, IO = Bidirectional, P = Power/Ground, NC = not connected. Warning: CC3 to CC4 are not used. Video data The differential LVDS signals X0-X3 and XCLK are reserved for the transmission of highspeed video data from the camera to the grabber board. The video data is transmitted using numerous serial channels simultaneously, according to the protocol for the channel link chipset from National Semiconductor. The CameraLink standard defines the names of the pixel signals, the description of the signal level and the pin assignments and pinout of the chip. Signal Name I/O Type Description R[0 7] O RS644 Red pixel data, 0 = LSB, 7 = MSB G[0 7] O RS644 Green pixel data, 0 = LSB, 7 = MSB B[0 7] O RS644 Blue pixel data, 0 = LSB, 7 = MSB STROBE O RS644 Output data clock Data are valid for a rising edge LVAL O RS644 Line Valid, active High Signal I = Input, O = Output, IO = Bidirectional, P = Power/Ground, NC = not connected. Warning: FVAL and DVAL are not used here as defined in the CameraLink standard. FVAL is always set to the value = 1 (high). DVAL is always set to the value = 1 (high). For a single output, the data is output as ODD (multiplex). Bit allocation 24-bit (3*8-bit) data (F24) Bit DS90CR285 Pin Name Bit DS90CR285 Pin Name Bit DS90CR285 Pin Name Bit DS90CR285 Pin Name R 0 Tx0 R 7 Tx5 G 6 Tx19 B 5 Tx14 R 1 Tx1 G 0 Tx7 G 7 Tx20 B 6 Tx10 R 2 Tx2 G 1 Tx8 B 0 Tx21 B 7 Tx11 R 3 Tx3 G 2 Tx9 B 1 Tx22 STROBE TxCLK R 4 Tx4 G 3 Tx12 B 2 Tx16 LVAL Tx24 R 5 Tx6 G 4 Tx15 B 3 Tx17 R 6 Tx27 G 5 Tx18 B 4 Tx13 The bit allocation conforms to the CameraLink Standard basic configuration. Serial communication Signal Name I/O Type Description SerTFG O RS644 Differential pair for serial communications to the grabber board SerTC 1 RS644 Differential pair for serial communications from the grabber board I = Input, O = Output, IO = Bidirectional, P = Power/Ground, NC = not connected. The CameraLink interface supports two LVDS signal pairs for communication between the camera and grabber board, which conform with the RS232 protocol for asynchronous communication: full duplex, no handshake 9600 baud, 8-bit, no parity bit, 1 stop bit. Page 3

4 4. Camera Control The software requires that the clser***.dll supplied with the Camera Link grabber board is installed. The most important camera functions can be set using serial commands, by using either the software from the grabber manufacturer or by using the configuration program SkCLConfig tool from Schäfter+Kirchhoff. SkCLConfig provides the direct adjustment of line scan camera parameters, such as gain, offset, and pi xel frequency, via the serial channel of the CameraLink interface. On startup, the camera declares information about type, revision and serial number. If the camera type field is empty then switch off the camera, check the connections and restart. 4.1 Gain / Offset and White Balance The camera is shipped prealigned with gain and offset factory settings. On startup, the RGB odd/even sliders register the gain and offset values already stored in the camera. Customized settings for gain or offset can be programmed using the SkCLConfig tool either by sliding the registers with the mouse or by entering camera parameters directly using the 'Set Command' (see facing table). The signal measuring range is delimited by using the offset value to set the baseline signal and gain to set the maximum signal. After white balance adjustments, the signals are coincident and compensated for all pixels across all sensors. B C A Offset After blocking all light reaching the line sensor, bring the individual video signals close to zero using the R, G and B odd/even offset sliders. The line signal should be just visible in the oscilloscope display. B Gain Now fully illuminate the sensor and move the R, G and B gain sliders to provide a slight overexposure for maximum signal clipping (for 8-bit: 255 or slightly above, for 12-bit: 4095). The parameter settings are stored within the list using Select and are retained for immediate subsequent use even after a complete shut down. C White Balance White Balance is a procedure used for compensating for the different sensitivities in the R, G and B signals. A reference signal for white balance is obtained by taking an image of a plain white surface. The R, G and B gain factors can be used to regulate the signals directly. Page 4

5 4.2 Serial Commands Set Commands Read Commands Set Operation Goooo<CR> Boooo<CR> Hoooo<CR> Joooo<CR> Description Gain 1 (Red odd) 0-20 db Gain 2 (Red even) 0-20 db Gain 3 (Green odd) 0-20 db Gain 4 (Green even) 0-20 db [ oooo<cr> Gain 5 (Blue odd) 0-20 Oppp<CR> Pppp<CR> Qppp<CR> Uppp<CR> Gain 6 (Blue even) 0-20 db Off1 (Red odd) Off2 (Red even) Off3 (Green odd) Off4 (Green even) ] ppp<cr> Off5 (Blue odd) _ppp<cr> C30<CR> C50<CR> T0<CR> T1<CR> M0<CR> M1<CR> M2<CR> Wyyyyy<CR> Xyyyyy<CR> Off6 (Blue even) Camera Clock: 30 MHz Camera Clock: 50 MHz Test pattern off Test pattern on Free Run with selected line rate External Trigger CC1 Free Run with maximum line rate Line rate (yyyyy = Hz) Exposure time (yyyyy = µs) Range of values: oooo = , ppp = yyyyy = 5 digits integer value as ASCII Return confirmation: 0 = OK, 1 = not OK Before adjustment of the exposure time or line rate by using the commands 'W' and 'X', the camera must be put into the 'Free Run' mode using command 'M0'. When using the grabber board to control exposure time then the camera must be set to mode 'External Trigger CC1' using command 'M1'. Request Return Description K<CR> SK22800CJRC-XC SK type number R<CR> Rev3.01 Revision number S<CR> SNr00163 Serial number I1<CR> VCC: yyyyy VCC (1=10mV) I2<CR> VDD: yyyyy VDD (1=10mV) I3<CR> moo: yyyyy mode of operation I4<CR> CLo: yyyyy clock low frequency (MHz) I5<CR> CHi: yyyyy clock high frequency (MHz) I6<CR> Ga1: yyyyy gain 1 I7<CR> Ga2: yyyyy gain 2 I8<CR> Of1: yyyyy offset 1 I9<CR> Of2: yyyyy offset 2 I10<CR> Ga3: yyyyy gain 3 I11<CR> Ga4: yyyyy gain 4 I12<CR> Of3: yyyyy offset 3 I13<CR> Of4: yyyyy offset 4 I15<CR> Ga5: yyyyy gain 5 I16<CR> Ga6: yyyyy gain 6 I17<CR> Of5: yyyyy offset 5 I18<CR> Of6: yyyyy offset 6 I20<CR> CLK: yyyyy selected clock freq (MHz) I22<CR> TRM: yyyyy selected trigger mode I24<CR> Exp: yyyyy exposure time (µs) I25<CR> mix: yyyyy min. exposure time (µs) I26<CR> LCK: yyyyy line frequency (Hz) I27<CR> maz: yyyyy max. line frequency (Hz) Page 5

6 5. RGB Sensors: 2D Imaging and Pixel Allocation Triple line sensors have 3 separate sensor lines for the primary colors red, green and blue and can achieve extremely high optical resolutions. The SK22800CJRC-XC color line scan camera has a triple line sensor with 7600 pixels each for red, green and blue. The sensors are directly adjacent, providing an inter-sensor distance of 9.3 µm equivalent to the size of a pixel. 9.3 µm The co lor information originating from the different parts of the object is transmitted in parallel and stored in the PC before being correctly reallocated. Line Pixel line 2 Raw Data R G B R G B R G B R G B R G B R G B R G B R G B R G B R G B R G B R G B... Allocation of color information 9.3 µm RED GREEN BLUE RED GREEN BLUE Signal display - RGB splitting A two-dimensio nal color image is generated by moving the object or the camera, ensuring that the sensor properties, the travel direction and speed are all accounted for: object velocity = pixel width magnification exposure time Triple line sensors require a precise synchronous translation of the object for the correct allocation of pixels A. When these conditions are not met then images with co lor convergence ab er rations are generated B. A B Monochrome font pattern A line synchronous object transport B asynchronous transport of the object causes color convergence aberration During object travel at a translation rate of one pixel per clock pulse, all color information is acquired within 3 clock cycles. An object point reaches the red line sensor first, followed immediately by the green, by which time the red sensor is collecting the next object information, and finally the blue line sensor, by which time the green and red sensors are collecting subsequent slices of object information, respectively. Page 6

7 6. Control Signals and Timing Diagram Input Control Signals The control signals needed to run the CCD line scan camera are "Clock" (CCLK) and "Start Of Scan" (SOS). The clock signal is generated internally by a 50 MHz oscillator. The SOS can be initiated internally by adjusting the Exposure Time or externally by the grabber board. For internal control, the camera must be set in the 'Free Run' mode by using command 'M0'. When the SOS signal is generated by the grabber board then the camera must be set to the 'external Trigger CC1' mode using 'M1'. The frequency of the 'SOS' signal determines the number of lines that are read per second. On the rising edge of this signal, the accumulated charges in the sensor pixels of the analog shift register are read out with each beat of the clock signal. Thus, the frequency of the clock signal determines the speed at which the charges of the individual pixels of the line sensor appear in the camera video output. At each positive edge, the accumulated charges of the subsequent pixels are released as video output. The Clock and 'SOS' signals do not have be synchronized. However, the clock frequency should be sufficiently slow to allow two successive 'SOS' signals to be read out from the line camera. The SK22800CJRC-XC camera requires 8064 clock pulses for a line scan to be read out completely. Larger numbers of clock pulse can be used without restriction. SOS CC1 CCLK STROBE LVAL 458 Clock Cycles 7600 Clock Cycles 6 Clock Cycles 15 ns R[0-7] G[0-7] B[0-7] Video intern for Red, Green, Blue, odd and even Output line scan data generated from the Input (SOS) signal SOS: Start Of Scan: minimum pulse length of 30 ns. The frequency of the SOS signal is directly controlled by the line frequency of the camera. The rising edge of the 'SOS' signal is the start of the signal accumulation process. The accumulated charges within the sensor are transferred to the analog transport registers in parallel with the sensor line information. i = isolation pixels, o = overclocking Page 7

8 7. Sensor Performance Specifications Producer: Type: Data source: Sony ILX146K 7600-pixel 4-line CCD Linear Sensor (Color) - Technical Data Sheet Electro-optical Characteristics Page 8

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10 Block Diagram Page 10

11 8. Dimensions Casing group: CC7 CCD line scan camera, digital Casing thread: M72x0.75 Distance to sensor: 10.4 mm Data Connector: Mini-D ribbon, female 26-pin Power Connector: Hirose series HR10A, female 6-pin Focus adapter FA26XC-S45 51 mm + 28 mm Focus adapter with variable length for with adapter M55x SK22500CNEC-XC and SK22800CJRC-XC for lenses with Leica thread. Compatible with Lens adapter M39-45 and 8 44 Ø f8 M55x0.75 Extension ring ZR-L Focus adapter FA26XC-S55 51 mm + 28 mm Focus adapter with variable length for with adapter M55x SK22500CNEC-XC and SK22800CJRC-XC. Compatible with Lens adapter AC46-55 and Extension ring ZR Ø f8 M55x Page 11

12 9. Warranty 10. Accessories This manual has been prepared and reviewed as carefully as possible but no warranty is given or implied for any errors of fact or in interpretation that may arise. If an error is suspected then the reader is kindly requested to inform us for appropriate action. The circuits, descriptions and tables may be subject to and are not meant to infringe upon the rights of a third party and are provided for informational purposes only. The technical descriptions are general in nature and apply only to an assembly group. A particular feature set, as well as its suitability for a particular purpose, is not guaranteed. The warranty period for the CCD line scan camera when used for the purpose for which it was intended is 24 months. The warranty is immediately void on inappropriate modification, use or damage. EC Declaration of Conformity This product satisfies the requirements of the EC directive 89/336/EEG as well as DIN EN Control cable SK pin shielded cable, both ends with mini-d ribbon connector, male/male MM SK MM Order Code 3 = 3 m cable length 5 = 5 m (standard) x = length of choice (maximum = 100 m) Power supply cable SK Shielded cable with Lumberg SV60 male 6-pin and Hirose HR10A female 6-pin connectors, MF SK MF Order Code 1.5 = 1.5 m standard 3 = 3 m x = length of choice Power Supply: PS Order Code Input: V AC, 50/60 Hz, 0.8 A 3-pin input connection (IEC 320) Output: 5 V DC/2.5 A 15 V DC/0.5 A, -15 V DC/0.3 A output connector: Lumberg KV60 female 6-pin, length 1 m Software: SK91CL-WIN * Order Code SkCLConfig control program for line scan cameras with a CameraLink TM interface (all grabber boards). SkLineScan operating program with oscilloscope display and scan function. Operating system: * Windows XP/2000 For Focus adapter: FA26XC-S45: Mounting ring ZR-L... Order Code Lens adapter M39-45 FA26XC-S55: Mounting ring ZR Lens adapter AC46-55 Lenses: high resolution enlarging and macro lenses high speed scan lenses optimized for infinite imaging, providing high quality images with a flat field area SK22800CJRC-XC Kieler Str. 212, Hamburg, Germany Tel: Fax: info@sukhamburg.de