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User Manual - Stemmer Imaging

1. A 86 of 105 RA14 131 018 10 15 Temperature Monitor VH GigE series A sensor chip is embedded in the camera to monitor the internal temperature XML parameter related to Device Temperature is as follows XML Parameters Description DeviceControl DeviceTemperature Display device temperature in Celsius Table 10 20 XML Parameter related to Device Temperature 10 16 Status LED A green LED is installed on the back panel of the camera to inform the operation status of the camera LED status and corresponding camera status are as follows e Continuous ON operates in Trigger Off Mode e Repeat ON for 0 5 seconds OFF for 0 5 seconds operates in Trigger Mode e Repeat ON for 1 second OFF for 1 second outputs Test Image e Repeat ON for 0 25 second OFF for 0 25 second operates in Trigger Mode and outputs Test Image P C 87 of 105 RA14 131 018 W 10 17 Test Image VH GigE series To check whether the camera operates normally or not it can be set to output test images generated in the camera instead of the image data from the CCD Three types of test images are available image with different value in horizontal direction Grey Horizontal Ramp image with different value in diagonal direction Grey Diagonal Ramp and moving image with different value in diagona
2. ccccccccccssssseeceeeeeeeeeeesceceeeeeeeseeaeeseceeeeessueaeseeeeeesssaaaaeeeeeees 14 5 4 2 Color Camera Spectral Response ccccccccccssssseeceeeeeeeaeeeeeeceeeeeeeeeeeeeeeeeesseueeeeeeeeeeessseaaaaeeeeeeees 17 5 5 MECHANICA 5 MNT OO TOES 20 6 Software Licensing Information 23 7 Connecting the 24 7 1 INO IEW AN Rm 24 7 2 Precaution to Center the Image 5 25 7 3 Precaution about Blurring Compared to Center 25 7 4 Installing Vieworks Imaging 25 o9 Camera WAST AC EET m 26 8 1 i a MB rediere p m Uu E 26 8 2 mue ie cie A 27 8 3 Control Receptacle 28 8 4 Power dluydt stze oziu 29 8 5 mc 30 8 6 UPU EE 30 9 ACQUISITION 31 9 1 Qu 31 9 2 Acquisition Start Stop Commands and Acquisition Mode 34 CP
3. _ 63 of 105 RA14 131 018 V 10 4 Pixel Format VH GigE series The internal processing of image data is performed in 12 bits Then the camera can output the data in 8 10 or 12 bits When the camera outputs the image data in 8 bits or 10 bits the 4 or 2 least significant bits will be truncated accordingly MSB LSB Original D11 D10 D7 D5 D4 D2 D1 Data F 4 Figure 10 11 Pixel Format F 4 F 4 b 4 The image data converted to 8 10 or 12 bits support various pixel data format depending on the camera model The pixel data will be reordered in FPGA according to the Pixel Format setting value Then it will be stored in the frame buffer before output XML parameter related to the Pixel Format is as follows XML Parameters Description ImageFormatControl PixelFormat Setthe pixel format supported by the device Table 10 5 XML Parameter related to Pixel Format 64 of 105 RA14 131 018 W The supported pixel formats for monochrome and color cameras are as follows VH GigE series Mono Sensor Color Sensor e Mono 8 e Mono 8 e Mono 10 e Mono 10 e Mono 10 Packed e 10 Packed e Mono 12 e Mono 12 e Mono 12 Packed e Mono 12 Packed e Bayer GR or RG 8 e Bayer GR or RG 10 e Bayer GR or RG 12 e Bayer GR or RG 10 Packed e Bayer GR or RG 12 Packed Table 10 6 Pixel Data Format Value The structures for supported pixel formats are as follows Mono 8 With th
4. 10 17 Pe SUIS aren 88 10 18 ROVOT E A m 90 10 19 DONO E EE EE E E EA E E 91 10 20 EVENE ONT Olora r T MT 92 10 21 Dave gt A AEE 93 10 22 Device 9 10 23 User Set COW Ol MNT I N AE EEA 94 10 24 CIO OC ACS E Em 94 Appendix A Defective Pixel Map Download 95 Appendix B LUI DOWH IOOU Eas ee te el ees 97 B 1 TPT ANG CU p 97 LE MEEC uUn uC e MP in lerem 97 B12 CSV MIB oM 99 Appendix C Field 101 1 E PEE E E 101 2 eT 103 du OO as 104 w H R _ 5 of 105 RA14 131 018 14 1 Precautions VH GigE series General e Do not drop disassemble repair or alter the device Doing so may damage the camera electronics and cause an electric shock e Do not let children touch the device without supervision e Stop using the device and contact the nearest dealer or manufacturer for technical assistance if liquid such as water drinks or chemicals gets into the device CAUT
5. When the Trigger Mode parameter is set to Off the camera will generate all required exposure start trigger signals internally and you do not need to apply exposure start trigger signals to the camera With the Trigger Mode set to Off the way that the camera will operate the exposure start trigger depends on the setting of the camera s Acquisition Mode parameter e Single Frame The camera will automatically generate a single exposure start trigger signal whenever it receives an Acquisition Start command e Multi Frame The camera will automatically begin generating exposure start trigger signals as many as specified by the Acquisition Frame Count parameter when it receives an Acquisition Start command The camera will continue to generate exposure start trigger signals until the number of exposure start trigger signals it has received is equal to the current Acquisition Frame Count parameter setting or until it receives an Acquisition Stop command With Single Frame or Multi Frame Acquisition Mode if you execute another Acquisition Start command while the camera is in the process of acquiring a frame an error may occur When the Acquisition Mode parameter is set to Multi Frame you must set the value of the camera s Acquisition Frame Count parameter The value of the Acquisition Frame Count can range from 1 to 255 35 of 105 RA14 131 018 V e Continuous The camera will automatically begin generating exposure start tr
6. 18 47 _ 405 8 2 Glass _ MENU Image g 4 M3 DP 5 avg a my amp n ag M25 4 x P0 794 J E C Mount Thread 10 05 L L 8 M3DP5 Camera Mounting Screw Holes Tripod Adaptor Removable Reference Plane Side Ee for Camera Mounting 1 2 3 2 Hole Thru Di p6 CB DP 4 7 1 4 20 UNC 2B Tripod Adaptor 49 52 Reference Plane Front for Camera Mounting Figure 5 16 VH 310G2 C mount Mechanical Dimension ER _ 22 of 105 RA14 131 018 14 6 Software Licensing Information VH GigE series The software in VH GigE series includes the lightweight IP IwIP TCP IP implementation The software licensing information for this implementation is as follows Copyright c 2001 2004 Swedish Institute of Computer Science All rights reserved Redistribution and use in source and binary forms with or without modification are permitted provided that the following conditions are met Redistributions of source code must retain the above copyright notice this list of conditions and the following disclaimer Redistributions in binary form must reproduce the above copyright notice this list of conditions and the following disclaimer in the documentation and or other materials provided with the distribution The name of the author may not be used to endorse or promote
7. Red da Green amp Blue Figure 5 12 VH 11MG2 C6 Spectral Response Measured with AR combed cover glass Absolute Quantum Efficiency 400 500 600 700 800 900 1000 1100 Wavelength nm Figure 5 13 VH 16MG2 C4 Spectral Response ER RR gt 19 of 105 RA14 131 018 Ww 5 5 Mechanical Specification VH GigE series The camera dimensions in millimeters are as shown in the following figure Mechanical FB 18 46 8 5 DP 5 posi iioi EN Camera Mounting Screw Holes i Glass x 2 p i x e F 1 _ 68 007 Image Plane 25 1116 67 amp 8 Rear Block 54 _ Reference Plane Side 77 for Camera Mounting Reference PlanefFront for Camera Mounting F n optional fan 15 available upon request Figure 5 14 VH GigE Series C mount Mechanical Dimension G RA14 131 018 20 of 105 VH GigE series Mechanical FB a 843 o 8 M5 DP 5 21 8 Camera Mounting Screw Hales i ad d B 68 02 Image Plane 85 4013 la 67 8 Rear Block 83 J Reference Plane Side for Camera Mounting Reference Plane Front for Camera Mounting An optional fan is available upon request Figure 5 15 VH GigE Series F mount Mechanical Dimension _ RA14 131 018 21 of 105 VH GigE series 925 J Mechanical FB
8. Scale Down Data Magnified Image Boundary Figure 10 26 Bilinear Interpolated Magnification 85 of 105 RA14 131 018 14 XML parameters related to Flat Field Correction are as follows XML Parameters Description FtcMod Flat Field Correction Off VH GigE series Enable the Flat Field Correction feature Ff cTargetLevel 04095 oet the average grey level for image background oet the number of frames to be acquired when generating the Flat Field data The more frames result 1 2 4 8 16 FfcFrames in the better data however it takes more time to generate the data FfcGenerate Generate the Flat Field data ELI FlatFieldCorrection Save the generated Flat Field data in the non volatile memory The generated data by executing the FfcGenerate parameter are saved in the volatile FfcSave memory and the data are lost if the camera is reset or if power is turned off To use the data after the camera is powered on or reset save them in the non volatile memory Load the Flat Field data from the non volatile memory FfcLoad into volatile nto volatilo memory J O t If the current setting values for the Binning Horizontal and Binning Vertical parameters are different from the setting values at the time when you generate the Flat Field data the Flat Field Correction feature is not available even if you set the Ffc Mode parameter to On Table 10 19 XML Parameters related to Flat Field Correction
9. Variable Gain Amplifier VGA Black Level Clamp and 14 bit A D converter ANALOG a CDS VGA 14 BIT 14 BIT CCD IN GAIN GAIN A ADC LVDS 1 40 times LEVEL CLAMP Figure 10 21 AFE Block Diagram You can change the gain and black level value by inputting proper value into the registers for gain and black level adjustments inside the AFE The CDS gain value is set in the factory during the manufacturing process therefore you cannot change the value The VGA gain is the same as the analog gain You can set the analog gain for all analog taps or each tap You can determine whether to control the gain balance between each tap manually or automatically by setting the Gain Auto Balance parameter to Off or Once To balance the black level between each tap use the Black Level parameter 78 of 105 RA14 131 018 14 10 11 2 Digital Domain Digital gain is adjustable from 1 to X64 with almost 1 1024 step If the Gain Auto parameter is set to Once or VH GigE series Continuous the digital gain value will be automatically adjusted according to the Exposure Auto Target Level parameter settings XML parameters related to Gain and Black Level are as follows XML Parameters Value Description AnalogAll Apply gain to all analog taps AnalogTap Apply analog gain AnalogTap2 Apply analog gain to Tap2 GainSelector DigitalAll Apply gain t
10. Exposure time control When reading the explanations in the overview and in this entire chapter keep in mind that the term frame is typically used to mean a single acquired image Acquisition Start and Stop Commands and the Acquisition Mode The Acquisition Start command prepares the camera to acquire frames The camera cannot acquire frames unless an Acquisition Start command has first been executed A parameter called the Acquisition Mode has a direct bearing on how the Acquisition Start command operates If the Acquisition Mode parameter is set to Single Frame you can only acquire one frame after executing an Acquisition Start command When one frame has been acquired the Acquisition Start command will expire Before attempting to acquire another frame you must execute a new Acquisition Start command If the Acquisition Mode parameter is set to Continuous an Acquisition Start command does not expire after a single frame is captured Once an Acquisition Start command has been executed you can acquire as many frames as you like The Acquisition Start command will remain in effect until you execute an Acquisition Stop command Once an Acquisition Stop command has been executed the camera will not be able to acquire frames until a new Acquisition Start command is executed T n a n D 31 of 105 RA14 131 018 VH GigE series Exposure Start Trigger Applyi
11. LED displays power status and operation mode e 2 RJ 45 Jack controls video data and the camera 3 4 pin Control Receptacle inputs external trigger signal and outputs strobe 02 6pin Power Input Receptacle supplies power to the camera Figure 8 1 VH GigE Series Back Panel w S gt 26 of 105 RA14 131 018 8 2 RJ 45 Jack VH GigE series The 8 pin RJ 45 jack provides Ethernet access to the camera Pin assignments for the RJ 45 jack adhere to the Ethernet standard Figure 8 2 RJ 45 Jack PAIR List Pin SignalName Type Description Gigabit Ethernet Transceiver Gigabit Ethernet Transceiver Gigabit Ethernet Transceiver LE TXB Differential Gigabit Ethernet Transceiver Gigabit Ethernet Transceiver Gigabit Ethernet Transceiver Gigabit Ethernet Transceiver TXD jDiferenia Gigabit Ethernet Transceiver Table 8 1 Pin Assignments for the RJ 45 Jack 27 of 105 RA14 131 018 v 8 3 Control Receptacle VH GigE series The control receptacle is a Hirose 4 pin connector part HR10A 7R 4S and consists of an external trigger signal input and strobe output port The pin assignments and configurations are as follows Figure 8 3 Pin Assignments for 4 Pin Control Receptacle 1 Trigger Input Voltage difference of 3 3 V 24 V 10 mA Trigger Input Input l l optically isolated Programmabl
12. ROI used for Exposure Auto RoiSelector e Select a Data ROI used for Balance White Auto e Only available on the color camera DataRoiControl RoiOffsetX HoiOffsetY RoiWidth RoiHeight X coordinate of start point ROI Y coordinate of start point ROI Width of ROI Height of ROI Table 10 11 XML Parameters related to Data ROI UJ _ 72 of 105 RA14 131 018 VH GigE series Only the pixel data from the area of overlap between the data ROI by your settings and the Image ROI will be effective if you use Image ROI and Data ROI at the same time The effective ROI is determined as shown in the figure below WidthMax ROI Offset X Offset X e cc e C ed Co fo ed eO SrrrerPTE EB 200 0 00 Roooggdg poong 2000 00 sooo gogo 0 O OO OOOO 0O CO O OCO LE L3 L3 C1 C3 CJ C1 C3 L3 EJ L1 EJ LI DODBUDODOLULDLU OHoooooog L3 E1 0 0 E1 OOOOO0D0D0DO0000D OOOOOOO000000 180 190 O 200 L1 10 0 20 O 11 AL D 250 DJ 2BLI LJ 1 JOH A195HO0 10 Effective Data ROI 18 Effective Data ROI Figure 10 RA14 131 018 73 of 105 W 10 9 Exposure Auto and Gain Auto VH GigE series The Exposure
13. Region me SIMI Dd RU ERAT RUN DRE 55 10 2 MEE 59 10 3 Sensor 61 10 4 PEKEE ON 64 10 5 michele E I TS 69 10 6 SITZ TION o MIRI TEN RUPEE 70 10 7 Inter Packet 71 10 8 P8118 72 10 9 EXO SUI Auto and Galnm D o 74 10 10 Balance White Auto Color Cameras 77 10 11 Gan and Black LCV Sl 78 10 11 1 Andog Bentl MN E ERIT 78 10 11 2 Digital Nm 79 10 12 E S T 80 10 13 Defective Pixel Correction ccccccceeccceecceeeeeeeeseneecseeeauceseuceseeeteeeteeesseeeeeeteueeseeeteneess 82 10 13 1 Conecto Metho srne a OE 82 10 13 2 Correction Method in Binning Mode cccccccccccecceseeeeeceeeeeeeeeeeeeeeeeeesseaeseeeeeeeeessaaaaeeeeeeeees 83 10 14 mcd 5 i o e DNE 84 10 15 Temperature Monitor nennen nennen nnne nnne nnne nne nein nein asian rne annuas 87 10 16 LED E ete 87 SSS gt 4 of 105 RA14 131 018 V F ey ey d VH GigE series
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15. externally generated electrical signal injected into the Control Receptacle pin 1 will act as the exposure start trigger signal for the camera This type of trigger signal is generally referred to as a hardware trigger signal A rising edge or a falling edge of the external signal can be used to trigger frame acquisition The Trigger Activation parameter is used to select rising edge or falling edge triggering Assuming that the camera is in a waiting for exposure start trigger acquisition status frame acquisition will start whenever the appropriate edge transition is received by the camera When the camera receives an external trigger signal and begins exposure it will exit the waiting for exposure start trigger acquisition status because at that point it cannot react to a new exposure start trigger signal As soon as the camera is capable of reacting to a new exposure start trigger signal it will automatically return to the waiting for exposure start trigger acquisition status When the camera is operating under control of an external signal the period of the external trigger signal will determine the rate at which the camera is acquiring frames 1 External signal period in seconds Frame Rate For example if you are operating a camera with an External trigger signal period of 500 ms 0 5 s o0 in this case the frame rate is 2 fps G 39 of 105 RA14 131 018 v 9 3 3 1 Exposure Modes VH GigE series If you are t
16. image data until the camera s Stream Hold feature is disabled VH GigE camera provides 128 MB on board memory for the Stream Hold feature The Stream Hold feature does not allow you to select which frame will be released to the host computer When the Stream Hold feature is disabled the stored frame data will be released to the host computer For more information refer to the application note about stream hold XML Parameters Description On Delay the transmission of frame data and store them StreamHold in the frame buffer Release the stored frame data to the host computer e Display the maximum number of frames that you can store in the frame buffer TransportLayerControl maximum number of frames will vary depending on the Image ROI and pixel format FrameCapacity settings e With the Stream Hold feature set to On the newly acquired frame will be ignored after saving the maximum number of frames Table 10 9 XML Parameters related to Stream Hold feature H ER gt 70 of 105 RA14 131 018 V 10 7 Inter Packet Delay VH GigE series VH GigE camera provides the Inter packet delay feature to set the delay in ticks between the packets transmitted by the camera Packet Size The Gev SCPS Packet Size parameter sets the size of the packets that the camera will use when it sends the data via the selected stream channel This p
17. on Vertical ROI changes with 1 Tap and 2 lap settings 60 100 140 180 220 260 300 340 380 420 460 480 256 400 600 800 1000 1200 1400 1600 1800 2000 2056 INN has NEN 150 250 250 450 550 650 750 250 950 105011501200 334 500 750 10001250 15001750 2000 2250 25002672 256 400 600 800 1000 1200140016001800 20002048 406 700 1000 1300 16001900 2200 2500 28003100 3248 Figure 10 2 Frame Rate by Vertical ROI changes SSS gt 58 of 105 RA14 131 018 V AA ho 10 2 Binning VH GigE series Binning has the effects of increasing the level value and decreasing resolution by summing the values of the adjacent pixels and sending them as one pixel The XML parameters related to Binning are as follows XML Parameters Description X1 X2 x3 Number of horizontal pixels to combine BinningHorizontal x4 x8 together ImageFormatControl x2 x3 Binning Vertical P Number of vertical pixels to combine together Table 10 3 XML Parameters related to Binning For example if you set 2 X 2 binning as shown in the figure below four pixels will be summed into one pixel Then the effective maximum resolution of the sensor is reduced to 1 2 The Width Max and Height Max parameters indicating the maximum allowed resolution of the image with the current camera settings will be updated depending on the binning settings And also the Width Height Offset X and Offset Y parameters will be updated depending on the binning se
18. set to Software the exposure time for each frame acquisition is determined by the value of the camera s Exposure Time parameter When the Trigger Mode parameter is set to On and the Trigger Source parameter is set to External the exposure time for each frame acquisition can be controlled with the Exposure Time parameter or it can be controlled by manipulating the external trigger signal n i gt 37 of 105 RA14 131 018 N 9 3 2 Using a Software Trigger Signal VH GigE series If the Trigger Mode parameter is set to On and the Trigger Source parameter is set to Software you must apply a software trigger signal exposure start to the camera to begin each frame acquisition Assuming that the camera is in a waiting for exposure start trigger acquisition status frame exposure will start when the software trigger signal is received by the camera Figure 9 2 illustrates frame acquisition with a software trigger signal When the camera receives a software trigger signal and begins exposure it will exit the waiting for exposure start trigger acquisition status because at that point it cannot react to a new exposure start trigger signal As soon as the camera is capable of reacting to a new exposure start trigger signal it will automatically return to the waiting for exposure start trigger acquisition status When you are using a software trigger signal to start each frame acquisition
19. the Exposure Time will determine the exposure time for each frame At this point you must set the Exposure Mode parameter to Timed If the Trigger Source parameter is set to External there are two modes of operation Timed and Trigger Width With the Timed mode the Exposure Time parameter will determine the exposure time for each frame With the Trigger Width mode the way that you manipulate the rise and fall of the external signal will determine the exposure time The Trigger Width mode is especially useful if you want to change the exposure time from frame to frame r a li 33 of 105 RA14 131 018 4 VH GigE series 9 2 Acquisition Start Stop Commands and Acquisition Mode Executing an Acquisition Start command prepares the camera to acquire frames You must execute an Acquisition Start command before you can begin acquiring frames Executing an Acquisition Stop command terminates the camera s ability to acquire frames When the camera receives an Acquisition Stop command e fthe camera is not in the process of acquiring a frame its ability to acquire frames will be terminated immediately e camera is in the process of acquiring a frame the frame acquisition process will be allowed to finish and the camera s ability to acquire new frames will be terminated The camera s Acquisition Mode parameter has three settings Single Frame Multi Frame and Co
20. the camera s Exposure Mode parameter must be set to Timed The exposure time for each acquired frame will be determined by the value of the camera s Exposure Time parameter When you use a software trigger signal to acquire frames be aware that there is a Trigger Latency due to the characteristics of the Gigabit Ethernet Use an external trigger signal to precisely synchronize the trigger signal with the exposure timing Software Trigger Signal Software Trigger Signal Received Received Frame Acquisition Exposure Exposure duration determined by the Exposure Time parameter Figure 9 2 Frame Acquisition with Software Trigger Signal When you are using a software trigger signal to start each frame acquisition the frame rate will be determined by how often you apply a software trigger signal to the camera and you should not attempt to trigger frame acquisition at a rate that exceeds the maximum allowed for the current camera settings There is a detailed explanation about the maximum allowed frame rate at the end of this chapter ooftware trigger signals that are applied to the camera when it is not ready to receive them will be ignored HR H n gt 38 of 105 RA14 131 018 9 3 3 Using an External Trigger Signal VH GigE series If the Trigger Mode parameter is set to On and the Trigger Source parameter is set to External an
21. to avoid moving the camera Exposure Exposure Ex Frame Frame N 1 posure an 1 Strobe Out a a oa 1 Delay s Strobe Out Signal Figure 10 32 Strobe Out Signal not drawn to scale 10 20 Event Control VH GigE camera provides an Event Notification feature With the Event Notification feature the camera can generate an event and transmit a related event message to the PC whenever a specific situation has occurred The camera can generate and transmit events for the following type of situation e The end of an exposure has occurred Exposure End XML parameters related to Event Control are as follows XML Parameters Description Select which particular event to control EventSelector ExposureEnd e _ Exposure End event is only available EventControl ENS Enable the selected event notification Event Notification Disable the selected event notification Latch the current time stamp counter into TransportLayer GevTimestampControlLatch GevTimestampValue Control GevTimestampControlReset oom t The event notification may be delayed depending on your network latency or network circumstances Reset the time stamp counter to 0 Table 10 23 XML Parameters related to Event Control 92 of 105 RA14 131 018 V 10 21 Device User ID VH GigE series You can input user defined information up to 16 bytes XML parameter related to Device User ID is as follow XML Parameters Descripti
22. 1 and 10 most significant bits of red data will be stored in Byte 2 and Byte 1 The bit order is shown in the first figure below After saving 1 horizontal line of G R pattern pixel data 2 horizontal line of B G pattern pixel data will be stored as shown in the second figure below pattern Horizontal Direction and B G pattern Horizontal Direction pixel data will be stored repeatedly as a line Vertical Direction Pixel Data 2 1 Red Pixel Data 1 1 Green ee eed gt oF 2 2 B EE 1 Line PEE EE Byte 2 Byte 1 Byte 0 Horizontal Di Pixel Data 0 1 Green Pixel Data 1 2 Blue LL EE gt 8 2 E 8 2 Line 2 1 Byte 0 Vertical Direction Figure 10 17 Bayer Format The alignment of the Bayer filter used in color cameras depends on the camera model The filter alignment for each available camera model is as follows Color Camera Model Filter Alignment VH 310G2 VH 2MG2 VH 4MG2 VH 11MG2 VH 16MG2 GR VH 5MG2 RG Table 10 7 Bayer Filter Alignment 68 of 105 RA14 131 018 10 5 Pixel Clock VH GigE series VH GigE camera provides a unique way to control the camera speed and frame rate You can select the pixel clock to operate the camera either in Normal or High speed over clocked mode With Normal mode the camera s frame rate is determined by the CCD sensor manuf
23. 32 dB Exposure Mode External Trigger ooftware Trigger Camera Image Memory Lens Mount Power Environmental Mechanical Table 5 1 Timed Exposure Trigger Width Exposure Double Exposure 3 3 V 24 0 V 10 mA Asynchronous optically isolated Asynchronous Programmable via Camera 128 MB C mount or F mount 10 15 V DC Max 6W Operating 5 40 C Storage 40 C 70 C 49 mm X 49 mm X 62 mm 220g VH 310G2 68 mm 68 mm X 54 mm 395 g with C mount 68 mm X 68 mm X 83 mm 430 g with F mount Specifications of VH GigE Series VH 310 2 4MG2 11 of 105 RA14 131 018 4 VH GigE Series Active Image x V Sensor Type Pixel size Sensor Output Video Output Dynamic Range Output Format olor Camera Interface Electronic Shutter Max Frame Rate at Full Resolution 16 fps 3 4 6 4 fps Pixel Clock Shutter Speed 10 us step Partial Scan Max Speed Binning Lookup Table Black Level Analog Gain Exposure Mode Auto Control Only available on VH 5MG2 External Trigger ooftware Trigger Camera Image Memory Lens Mount Power Environmental Mechanical Mono VH GigE series ICX625 KAI 11002 KAI 16000 8 10 12 bits Mono8 Mono10 Mono10 packed Mono12 Mono12 packed Bayer8 Bayer10 Bayer10 packed Bayer12 Bayer12 packed Gigabit Ethernet Global Shutter 2 2 4 2 fps 60 MHz 30 40 MHz 41 fps at 256 Lines 27 fps at 334 Lines 15 fps at 406 Lines x1 X2 X3 X4 X8 Hor
24. 46 of 105 RA14 131 018 v Guidelines for Overlapped Exposure VH GigE series If you will be operating the camera with overlapped exposure there are two important guidelines to keep in mind e You must not begin the exposure time for a new image acquisition while the exposure time of the previous acquisition is in progress e You must not end the exposure time of the current image acquisition until readout of the previously acquired image is complete When you are operating a camera with overlapped exposure and using an external trigger signal to trigger image acquisition you could use the camera s Exposure time parameter settings and timing formulas to calculate when it is safe to begin each new acquisition The exposure must always begin on an interline boundary of the CCD sensor For this reason if a trigger signal is applied during the readout process there might be an Exposure Start Delay up to 1 horizontal line time J K _ 47 of 105 RA14 131 018 W 9 6 Real Exposure VH GigE series 9 6 1 Timed Exposure Mode When the Timed mode is selected the exposure time is determined by the time interval between the point where an external trigger signal is applied and the point where the Photodiode Transfer signal falls The camera generates a shutter signal to clear pixels when an external trigger signal is applied The exposure time begins when the shutter s
25. Auto feature automatically adjusts the Exposure Time parameter until the grey level for the pixels in the given Data ROI reaches an Exposure Auto Target Level value set by the user The Exposure Auto feature in VH GigE series uses iterative algorithm which repeatedly calculates the previous exposure values until it gets new exposure value Note that the camera needs up to 30 frames to complete the Exposure Auto feature The Exposure Auto feature is not available if the Exposure Mode parameter is set to Trigger Width The Exposure Auto and Gain Auto features can be used at the same time and operated in the Off Once and Continuous modes of operation If you use two features at the same time the camera will adjust the value of Exposure Time followed by Digital Gain When the Exposure Auto or Gain Auto feature is set to Once the parameter values are automatically adjusted until the related parameter value reaches the target value After the automatic parameter value adjustment is complete the feature will be set to Off When the auto feature is set to Continuous the camera adjusts Exposure Time or Digital Gain parameter to reach the target value every time the lighting conditions change You can set the Exposure Auto Tolerance parameter to adjust the sensitivity of the Exposure Auto feature The maximum gray level of image If the grey level of image is brighter than the upper limit Upper Limit Target Level Tolerance Exposure Aut
26. Binning Horizontal parameter to 1 the Width parameter will be 498 166 3 If you want to restore the Width to its original value you can set the Width to 500 manually 56 of 105 RA14 131 018 V The approximate maximum frame rate depending on the change of Vertical ROI can be obtained as shown in the VH GigE series following expression 1 or 2 Channel Mode Frame Rate fps 1000000 Iwen Tre 12 12 the amount of time required to transmit electric charges accumulated on the pixels to Vertical Register the amount of time required for 1 row flush the number of Vertical Line of CCD the amount of time required for transmission of one line size of the Vertical ROI The available minimum value of Tyccp Tre Vsize TL and may vary depending on the camera model The value of T may vary depending on the Sensor Digitization Taps and Pclk Selector parameter settings The values of each item are shown below Minimum 60 Lines 150 Lines 256 Lines 256 Lines 334 Lines 406 Lines Vertical ROI Based on the High Speed Pixel Clock PclkSelector PCLK1 except VH 5MG2 model Normal Speed Table 10 2 Timing Value for VH GigE Series SSS i gt 57 of 105 RA14 131 018 VH GigE series The following figure shows frame rate for each camera model depending
27. E mp aei ale Paste 2 e SSS SF E95 1 4094 Clipboard Font E Alignment 3 4092 4 w f 0 4 4091 B C D 4095 0 1 comment line 2 comment line 3 input output 4 ol 4095 5 1 4094 6 2 4093 7 3 4092 8 4 4091 Ju 10 4095 0 11 12 13 2 Run Vieworks Imaging Solution 6 X and click the Configure button to display the window as shown below Select the LUT tab select Luminance from the Type dropdown list and then click the Load File button Device Maintenance FPGA Defect SCRIPT Graph Type Lurmin Point Clear Contig 1023 2047 3071 ooo LLL U Camera LUT Download Upload Upload to PC e 99 of 105 RA14 131 018 O i c x YY 3 Search and select the created LUT file and click the Open button VH GigE series R ecent Documents Desktop My Documents Computer Metwork File name Jt lut Places Files of type LuT files C luti Cancel 4 Click the Download button After completing the download click the OK button to close the confirmation ws U n 100 of 105 RA14 131 018 W VH GigE series Appendix C Field Upgrade C 1 MCU 1 Run Vieworks Imaging Solution 6 X and click the Configure button to display the window as shown below 2 Select the MCU tab click the File Pa
28. I the pixel data from the Image ROI will be used to control the white balance As soon as the Balance White Auto parameter is set to Once the Digital Red Digital Green and Digital Blue will be set to 1 Then Digital Red and Digital Blue will be adjusted to control the white balance XML parameters related to the Balance White Auto and RGB Gain settings are as follows XML Parameters Value Description AnalogAll Apply gain to all analog taps Analog Tap1 Apply analog gain to Tap1 Analog Tap2 Apply analog gain to Tap2 GainSelector DigitalAll Apply gain to all digital channel DigitalRed Apply gain to red digital channel DigitalGreen Apply gain to green digital channel AnalogControl DigitalBlue Apply gain to blue digital channel Set an absolute physical gain value when Digital Gain 0 5 x2 0 Red Green Blue is selected Off Balance White Auto Off BalanceWhiteAuto Once White Balance is adjusted once and then Off Table 10 14 XML Parameters related to Balance White Auto 77 of 105 RA14 131 018 10 11 Gain and Black Level VH GigE series You can set the analog VGA and digital gain factor to adjust the gain The black level is adjusted by removing the optical black offset from the CCD so that the effect of dark current will be minimized 10 11 1 Analog Domain The VH GigE camera has one Analog Signal Processor or Analog Front End AFE for each channel This AFE consists of Correlated Double Sampler CDS
29. ION e Do not touch the device with wet hands Doing so may cause an electric shock e Do not store the device at a higher temperature In addition maintain the temperature of the camera housing in a range of 5 C to 40 C during operation Otherwise the device may be damaged by excessively high temperatures Installation and Maintenance e not install in dusty or dirty areas or near an air conditioner or heater to reduce the risk of damage to the device e _ Avoid installing and operating in an extreme environment where vibration heat humidity dust strong magnetic fields explosive corrosive mists or gases are present e Do not apply excessive vibration and shock to the device This may damage the device e Avoid direct exposure to a high intensity light source This may damage the image CAUTION sensor e Do not install the device under unstable lighting conditions Severe lighting change will affect the quality of the image produced by the device e Do not use solvents or thinners to clean the surface of the device This can damage the surface finish Power Supply e Applying incorrect power can damage the camera If the voltage applied to the camera is greater or less than the camera s nominal voltage the camera may be damaged or operate erratically Please refer to 5 2 Specifications for the camera s nominal voltage x Vieworks Co Ltd does NOT provide power supplies with the devices Make sure the power i
30. O Do not invert the output signal of the line Off Disable the line output ExposureActive Output pulse signals indicating the current exposure time FrameActive Output pulse signals indicating a frame readout time LineSource StrobeOut Output Exposure Active signals with Strobe Out Delay PulseGenerator Output user defined pulse signals DigitallO Control UserOutput Output User Output signal set by User Output Value ontro Set the bit state of the line to High UserOutputValue Set the bit state of the line to Low Set a pulse period in microseconds when the Line Source PulsePeriod 1 60 000 000 is set to Pulse Generator Set a pulse width in microseconds when the Line Source PulseWidth 0 60 000 000 is set to Pulse Generator Set a delay in microseconds when the Line Source is set to Strobe Out Table 10 22 Digital IO Control StrobeOutDelay 0 65535 5 SSS gt 91 of 105 RA14 131 018 14 The camera can provide a Strobe Out output signal The signal goes high when the exposure time for each VH GigE series frame acquisition begins and goes low when the exposure time ends as shown in Figure 10 32 This signal can be used as a flash trigger and is also useful when you are operating a system where either the camera or the object being imaged is movable Typically you do not want the camera to move during exposure You can monitor the Strobe Out signal to know when exposure is taking place and thus know when
31. User Manual VH 310G2 VH 2MG2 VH 4MG2 VH 5MG2 VH 11MG2 VH 16MG2 CC VISION vieworks n j Ta EM j Ay Ty p J ue VH GigE series Revision History Version Date Description 1 0 2013 01 24 Draft e Added description of M5 set screws for tilt adjustment 1 1 2013 06 14 e Revised spectral response to be separated by and color e Added the Exposure Auto and Gain Auto features 1 2 2014 07 25 e Added IwIP lightweight IP TCP IP implementation m _ 2 of 105 RA14 131 018 V VH GigE series Contents E 1610 cc 6 2 R 7 3 Compliance amp 7 3 1 GON SC cece E t 7 3 2 OG ste es ee ne a 7 3 3 8 7 4 Package Components sssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnmnnn nnnm CDU CE 8 5 Product Specifications 10 5 1 E 10 5 2 POCEO 11 5 9 Camera AON 13 5 4 PECAR E reer eee 14 5 41 Mono Camera Spectral Response
32. acent in the same line L3 L2 L1 H1 H2 H3 Current Pixel Figure 10 24 Location of Defective Pixel to be corrected If current pixel is a defective pixel as shown in the above figure correction value for this pixel is obtained as shown in the following table depending on whether surrounding pixel is defective pixel or not Adjacent Defective Pixel s Correction value of Current Pixel None L1 R1 2 L1 H1 H1 L1 L1 R1 L2 R2 2 L1 R1 R2 L2 L2 L1 R1 H2 L2 L1 R1 R2 L3 R3 2 L2 L1 R1 R2 R3 L3 L3 L2 L1 R1 R2 H3 Table 10 17 Calculation of Defective Pixel Correction Value A 82 of 105 RA14 131 018 V 10 13 2 Correction Method in Binning Mode The Defective Pixel Correction feature is also available even when 2X2 or 4X4 binning is enabled VH GigE series The correction value will be averaged based on four neighboring pixels during 2 2 binning and sixteen neighboring pixels during 4 x 4 binning XML parameter related to Defective Pixel Correction is as follows XML Parameters Value Description Apply a downloaded defective pixel map to the camera ImageFormatControl DefectivePixelCorrection Disable the application of the defective pixel 5 Table 10 18 XML Parameter related to Defective Pixel Correction To apply the Defective Pixel Correction feature you must download a Defe
33. acturer VH GigE camera internal design is optimized for High speed mode With High speed mode it is possible to over clock the camera which will result in higher frame rate However the camera signal to noise ratio SNR may be reduced compared to Normal mode XML parameters related to pixel clock are as follows XML Parameters Value Description PCLKO Set pixel clock to Normal mode e VH 11M 16MG2 30 me e VH 310 2M 4MG2 40 PclkSelector e VH 5MG2 60 Only operate in Normal mode DeviceControl PCLK1 Set pixel clock to High speed mode e VH 11M 16MG2 40 e VH 310 2M 4MG2 50 me Display the current camera pixel clock in CurrentPclkFreq Table 10 8 XML Parameters related to Pixel Clock RR n Ha rra 69 of 105 RA14 131 018 14 10 6 Stream Hold VH GigE series VH GigE camera provides Stream Hold feature for controlling the transmission of data Normally the camera transmits frame data to the host computer immediately after completing the exposure Enabling the Stream Hold feature delays the transmission of data storing it in the camera s volatile memory until the Stream Hold feature is disabled This feature is especially useful to prevent flooding in Gigabit Ethernet network where multiple cameras are connected to a single host computer and capture a single event Using the Stream Hold feature each camera will hold the
34. ain Features e Normal and High Speed Operation Modes e Xl X2 X3 x4 x8 Horizontal and Vertical Binning e Real Exposure e Stream Hold e nter Packet Delay e Camera Image Memory 128 MB e Field Upgradable Firmware e Pixel Defect Correction Binning Mode 2 x 2 4X 4 e Excellent Dynamic Range and Noise Performance e Auto Exposure Auto Gain Controls A A BR R C ae QJ 10 of 105 RA14 131 018 4 5 2 Specifications VH GigE series VH GigE series technical specifications are as follows VH GigE Series Active Image H x V Sensor Type Pixel Size Sensor Output Video Output Dynamic Range Mono Output Format Camera Interface Electronic Shutter VH 310G2 VH 2MG2 VH 4MG2 640 x 480 1600 x 1200 2048 x 2048 Truesense Imaging Truesense Imaging Truesense Imaging KAI 0340 KAI 2020 KAI 0421 7 4 um X 7 4 pm 1 or 2 Tap 8 10 12 bits gt 60 dB gt 62 dB Mono8 Mono10 Mono10 packed Mono12 Mono12 packed Bayer8 Bayer10 Bayer10 packed Bayer12 Bayer12 packed Gigabit Ethernet Global Shutter Max Frame Rate at Full Resolution 11 20 fps Pixel Clock 40 50 Mz Shutter Speed 10 us step 55 us 7S Partial Scan Max Speed Binning X1 2 x3 x4 8 Horizontal and Vertical Independent Lookup Table G 1 0 User Defined Lookup Table LUT Black Level Adjustable 0 127 LSB at 12 bit 256 steps Analog Gain x1 x40 0
35. and or users need to take Device for Office Use note of this IR RR Pra na i 7 of 105 RA14 131 018 L 4 Package Components VH GigE series Package Components VH Camera with F mount or VH 310G2 Camera with C mount Mount Plate Optional 8 of 105 RA14 131 018 VH GigE series Package Components M5 Set Screws for Tilt Adjustment Provided only with F mount camera You can adjust the tilt using the M5 set screws however it is not recommended since it is adjusted as factory default settings XI e If the tilt settings need to be adjusted inevitably please contact your local dealer or factory representative for technical support al 9 of 105 RA14 131 018 W 5 Product Specifications VH GigE series 5 1 Model VH GigE series is a progressive scan high performance industrial digital camera All features of the camera can be easily updated in the field through Gigabit Ethernet interface The camera uses the latest CCD technology from Truesense Imaging Inc formerly Kodak Imaging Solution and Sony which provides superior low noise performance resulting in high dynamic range The camera is developed based on GenlCam standard The image processing and controls of VH GigE series are based on embedded FPGA with a 32 bit microprocessor M
36. arameter should always be set to the maximum size that your network components Ethernet Adapter can handle Setting the delay between packets The Gev SCPD parameter sets the delay in ticks between the packets transmitted from the camera Increasing the delay will decrease the camera s effective data transmission rate and will thus decrease the network bandwidth used by the camera In the VH GigE camera one tick is 8 ns To check the tick frequency read the Gev Time stamp Tick Frequency parameter value In case of multiple cameras or other devices working on the same physical network it might be desirable to send the packets of a camera s streaming channel with a certain inter packet delay in order to allow multiple cameras or devices to share a given network bandwidth XML Parameters Description Set the packet size The maximum GevSCPSPacketSize 576 16 000 Bytes value may vary depending on the Ethernet Adapter GevSCPD 0 TBD Set the delay between packets Table 10 10 XML Parameters related to Inter Packet Delay TransportLayerControl ssc R gt 71 of 105 RA14 131 018 W 10 8 Data ROI VH GigE series The Exposure Auto and Balance White Auto features use the pixel data from a Data Region of Interest ROI to adjust the related parameters XML parameters related to data ROI are as follows XML Parameters Value Description AE Select a Data
37. art trigger is applied while the camera is in a waiting for exposure start trigger acquisition status the camera will acquire and transmit a frame The camera will retain the ability to acquire frames until an Acquisition Stop command is executed Once the Acquisition Stop command is received the camera will no longer be able to acquire frames When the camera s Acquisition Mode is set to Single Frame the maximum possible acquisition frame rate for a given ROI cannot be achieved This is true because the camera performs a complete internal setup cycle for each single frame and because it cannot be operated with Trigger Overlap To achieve the maximum possible acquisition frame rate set the Acquisition Mode to Continuous and Trigger Overlap to Readout I E R M A 34 of 105 RA14 131 018 V 9 3 Exposure Start Trigger VH GigE series The exposure start trigger is used to begin frame acquisition Exposure start trigger signals can be generated within the camera or may be applied externally as Software or External exposure start trigger signals If an exposure start trigger signal is applied to the camera the camera will begin to expose a frame 9 3 1 Trigger Mode The main parameter associated with the exposure start trigger is the Trigger Mode parameter The Trigger Mode parameter for the exposure start trigger has two available settings Off and On 9 3 1 1 Trigger Mode Off
38. at you would like to acquire frames at a rate higher than the maximum allowed with the camera s current settings In this case you must adjust one or more of the factors that can influence the maximum allowed frame rate and then check to see if the maximum allowed frame rate has increased The time that it takes to transmit a frame out of the camera is the main limiting factor on the frame rate You can decrease the frame transmission time and thus increase the maximum allowed frame rate by doing one or more of the following Use an 8 bit pixel data format rather than a 12 bit pixel format Images with fewer bits per pixel will take less time to transmit Usea smaller ROI Decreasing the ROI means that the camera has less data to transmit and therefore the transmission time will decrease a A Use binning When pixels are binned there is less data to transmit and therefore the transmission time will decrease sure that the Packet Size GevSCPSPacketSize parameter is set as high as possible for your system and that the Inter Packet delay GevSCPD parameter is set as low as possible If you have the Sensor Digitization Taps parameter set to One consider changing the value to Two This will usually increase the maximum allowed frame rate If you are using normal exposure times and you are using the camera at its maximum resolution your exposure time will not normally restrict the frame rate However if you are usin
39. ctive Pixel Map 6 to the camera For more information about how to download a Defective Pixel Map to the camera refer to Appendix A w ER gt 83 of 105 RA14 131 018 14 10 14 Flat Field Correction VH GigE series The Flat Field Correction feature improves the image uniformity when you acquire a non uniformity image due to external conditions The Flat Field Correction feature can be summarized by the following equation IR IB M IF IB Where IC Level value of corrected image IR Level value of original image IB Black offset value M Average value of image after correction IF Level value of Flat Field data In actual use conditions generate a Flat Field data IF and perform the Flat Field Correction feature according to the following procedures 1 Setthe binning mode as desired 2 Setthe number of frames to be acquired for generating the Flat Field data into the Ffc Frames parameter 3 Execute the Ffc Generate parameter The series of frames will be averaged and scaled down to 1 16 pixel Then the camera will generate the Flat Field data 4 Execute the Ffc Save parameter to save the generated Flat Field data in the non volatile memory When the Flat Field data are applied for correction the Flat Field data which were scaled down will be enlarged via Bilinear Interpolation as shown in the Figure 10 26 5 Set the average value in t
40. e Output Du 3 3 V TTL Output utpu Default Strobe Out P Output resistance 47 Table 8 2 Pin Arrangement of Control Receptacle NO JI The mating connector is a Hirose 4 pin plug part HR10A 7P 4P or the equivalent connectors B E gt 28 of 105 RA14 131 018 8 4 Power Input Receptacle VH GigE series The power input receptacle is a Hirose 6 pin connector part HR10A 7R 6PB The pin assignments and configurations are as follows Figure 8 4 Pin Assignments for Power Input Receptacle 12 3 12v DO DG Power 15 6 DG Ground DG Ground Table 8 3 Pin Configurations for Power Input Receptacle Connecting the power cable to the camera can be made by using the Hirose 6 pin plug part HR10A 7P 6S or the equivalent The power adaptor is recommended to have at least 1A current output at 12 V DC 10 voltage output Users need to purchase the power adaptor separately Precaution for Power Input e sure the power is turned off before connecting the power cord to the camera Otherwise damage to the camera may result CAUTION Ifthe camera input voltage is greater than 16 V damage to the camera may result 29 0 105 RA14 131 018 W 8 5 Trigger Input Circuit VH GigE series The following figure shows trigger signal input circuit of the 4 pin connector Transmitted trigger signal is applied to the internal c
41. e camera set to Mono 8 the pixel data output is 8 bit monochrome unsigned char and unpacked type This type is stored in a byte unit when 8 bit pixel data are stored in the frame buffer Pixel Data gt 8 bit 76543210 Byte 0 Figure 10 12 Mono 8 Format 65 of 105 RA14 131 018 10 With the camera set to Mono 10 the pixel data output is 10 bit monochrome unsigned char and unpacked type This type is divided into two bytes when 10 bit pixel data are stored in the frame buffer 8 bits of pixel data will be VH GigE series stored in Byte 0 2 bits of pixel data will be stored in Byte 1 and the rest 6 bits will not be used Pixel Data 8 bit 7654321 0 Byte O Figure 10 13 Mono 10 Format Mono 10 Packed With the camera set to Mono 10 Packed the pixel data output is 10 bit monochrome unsigned char and GigE Vision specific packed type This type is divided into three bytes when 20 bit pixel data are stored in the frame buffer 8 bits of pixel data 0 will be stored in Byte 0 and the rest 2 bits will be stored in Byte 1 Pixel Data 1 will be stored in Byte 2 and the rest 2 bits will be stored in Byte 1 Pixel Data 1 Pixel Data 0 8 bit 9 8 7 6 54 3 2 Byte 2 Byte O Figure 10 14 Mono 10 Packed Format 66 of 105 RA14 131 018 12 With the camera set to Mono 12 the pixel data output is 12 bit monochrome unsigned and unpacked type This type is divided i
42. elay lt 28 7 us 2 Tap 12 5 us lt Delay lt 55 8 us 1 Tap VH 5MG2 2 5 us 0 02 us 12 5 us Delay lt 34 7 us 2 Tap 12 5 us lt Delay lt 113 4 ys 1 Tap VH 11MG2 4 5 us 0 02 us 12 5 us lt Delay lt 62 5 us 2 Tap 18 5 us lt Delay lt 141 1 us 1 Tap VH 16MG2 5 5 us 0 02 us 18 5 us lt Delay lt 78 8 ys 2 Tap Based on the High Speed Pixel Clock PclkSelector PCLK1 except VH 5MG2 model Normal Speed Table 9 3 Exposure Start Delay The exposure must always begin on an interline boundary of the CCD sensor For this 65 reason if a trigger signal is applied during the readout process there might be an Exposure Start Delay up to 1 horizontal line time The transmission time can vary due to the characteristics of the Ethernet network And also the transmission start delay can vary from frame to frame however it is very low significance when compared to the transmission time sw BR BR gt 52 of 105 RA14 131 018 V 9 8 Maximum Allowed Frame Rate VH GigE series In general the maximum allowed acquisition frame rate on the camera may be limited by several factors e The amount of time that it takes to transmit an acquired frame from the camera to your computer The amount of time needed to transmit a frame depends on the bandwidth assigned to the camera e setting for the Sensor Digitization Taps parameter If this parameter i
43. en select Luminance from the Type dropdown list 2 Seta desired value in the Gamma input field and click the Apply button Device Maintenance MCU FPGA Defect 4095 Paint Clear ff Config AL 0 1023 2047 3071 0 s Camera LUT Download Upload Upload to PC A L rna li 97 of 105 RA14 131 018 VH GigE series 3 Click the Download button to download the gamma set to the camera Device Maintenance FPGA Defect Config 1023 2047 3071 A D Camera LUT Download Upload Upload to PC 4 After completing the download click the OK button to close the confirmation SSS gt 98 of 105 RA14 131 018 VH GigE series B 1 2 CSV File Download 1 Create the LUT table in Microsoft Excel format as shown in the left picture below and save as a CSV file csv The picture in the right shows the created file opened in Notepad Once the file has been created completely change the csv file extension to lut The following rules need to be applied when creating the file Lines beginning with or are treated as notes Based on the input values make sure to record from 0 to 4095 t Peay CO Eri Home Insert Page Layout Form File Edit Format View Help comment line Calibri qu comment line 7 UA
44. ency Trigger Jitter oc H H gt 50 of 105 RA14 131 018 V 9 7 Acquisition Timing Chart VH GigE series Figure 9 11 shows a timing chart for frame acquisition and transmission The chart assumes that exposure is triggered by an externally generated exposure start trigger signal that the Trigger Activation parameter is set to Rising Edge and that the Exposure Mode parameter is set to Timed As shown in the figure below there is a slight delay between the rise of the exposure start trigger signal and the start of exposure After the exposure time for a frame acquisition is complete the camera begins reading out the acquired frame data from the imaging sensor into a frame buffer in the camera When a sufficient amount of frame data has accumulated in the frame buffer the camera will begin transmitting the data to your computer This buffering technique avoids the need to exactly synchronize the clock used for sensor readout with the data transmission The camera will begin transmitting data when it has determined that it can safely do so without over running or under running the buffer e Exposure Start Delay the amount of time including trigger jitter and latency between the point where the trigger signal rises and the point where exposure actually begins e Frame Readout time the amount of time it takes to read out the frame data from the imaging sensor
45. ere is an Exposure Start Delay refer to Table 9 3 between the rise of the external trigger signal and the rise of the shutter signal There is difference between the width of the external trigger signal and the exposure time as much as the tsub value of the shutter signal and Transfer Pulse Offset value tog tap You can calculate an actual exposure time by using the following formula e Exposure Time Trigger Width tgp tsub p External Trigger Signal Width External Exposure Start Trigger Signal lt Exposure Start Delay shutter Signal num 5 Offset value Transfer Pulse a i E Dp 1 to aO Duration determined by the External Trigger m Signal Width teub and Transfer Pulse Offset value s Real Exposure Figure 9 10 Real Exposure with Trigger Width Exposure Mode SSS gt 49 of 105 RA14 131 018 W The tsub and Transfer Pulse Offset value are determined by the CCD sensor used in the camera VH GigE series The following table shows the lt and Transfer Pulse Offset values for VH GigE series Real Exposure Parameters Real Exposure Parameters ____ VH 5MG2 tus 20us 84us e tog Photodiode transfer VH 11MG2 109us 205 Refer to Table 9 3 signal e tag VCCD trailing pedestal Table 9 2 Real Exposure Parameters Shutter Transfer VCCD leading pedestal signal signal e Exposure Start Delay Trigger Lat
46. ernal Trigger Signal rame Acquisition N rame Acquisition 1 P o _ Figure 9 7 Trigger Overlap Off gt 45 of 105 RA14 131 018 DE Ta EM i j n 5 J we VH GigE series In the Trigger Overlap Readout mode of operation the exposure of a new frame begins while the camera is still reading out the sensor data for the previously acquired frame Figure 9 8 illustrates the Trigger Overlap parameter set to Readout and the Exposure Mode parameter set to Trigger Width Acquisition Start Command External Trigger Signal rame Acquisition N HE Frame Acc uisition N 1 rame Acquisition N 2 Frame Acquisition N 3 Time Figure 9 8 Trigger Overlap Readout Determining whether your camera is operating with overlapped or non overlapped exposure and readout is not a matter of issuing a command or switching a setting on or off Rather the way that you operate the camera will determine whether the exposures and readouts are overlapped or not If we define the Frame Period as the time from the start of exposure for one frame acquisition to the start of exposure for the next frame acquisition then e Non overlapped Frame Period gt Exposure Time Readout Time e _ Overlapped Frame Period lt Exposure Time Readout Time m _
47. es them The FPGA controls the Timing Generators TGs and the Analog Front End AFE chips where the TGs generate CCD control signals and AFE chips convert analog CCD output to digital values to be accepted by the Processing amp Control Logic The Processing amp Control Logic processes the image data received from AFE and then transmits data through the Gigabit Ethernet interface And also the Processing amp Control Logic controls the trigger input and output signal which are sensitive to time Furthermore DDR2 for operating Micro Controller and for used as Gigabit Ethernet frame buffer SDRAM for used as a frame buffer to process images Gigabit Ethernet Controller and Flash memory for saving system codes and defect coordinates are installed outside FPGA SSS gt 13 of 105 RA14 131 018 VH GigE series 5 4 Spectral Response 5 4 1 Mono Camera Spectral Response The following graphs show the spectral response for VH GigE series monochrome cameras Absolute Quantum Efficiency Absolute Quantum Efficiency 0 60 0 50 0 40 0 30 O20 0 10 OD MH 400 ELI 1000 1100 Wavelength nm Figure 5 2 VH 310G2 M264 Spectral Response E um Wavelength nm Figure 5 3 VH 2MG2 M42 Spectral Response 14 of 105 RA14 131 018 Absolute Quantum Efficiency Relative Response VH GigE series Ch Gl Ch 5L n Wavelength nm Figure 5 4 VH 4MG2 M20 Spectral Res
48. feature is disabled If you are operating the camera in any one of the following ways you must specify an exposure time by setting the camera s Exposure Time parameter e the Trigger Mode is set to off e Trigger Mode is set to On and the Trigger Source is set to Software In this case you must set the Exposure Mode parameter to Timed the Trigger Mode is set to On the Trigger Source is set to External and the Exposure Mode is set to Timed The Exposure Time parameter must not be set below a minimum specified value The Exposure Time parameter sets the exposure time in us The minimum and maximum exposure time settings for each camera model are shown in the following table Camera Model Minimum Allowed Exposure Time Maximum Possible Exposure Time VH 310G2 16 us VH 2MG2 37 us VH 4MG2 55 US VH 5MG2 29 Js VH 11MG2 131 us VH16MG2 209 us 7 000 000 us t When the Exposure Mode is set to Trigger Width the exposure time is controlled by the external trigger signal and has no maximum limit Table 9 1 Minimum and Maximum Exposure Time Setting 43 of 105 RA14 131 018 DE Ta EM i j n Ty J we VH GigE series 9 4 1 Exposure Auto The Exposure Auto feature automatically adjusts the Exposure Time parameter within set limits until an average gray value for the pixel data from the AE Data ROI reaches an Exposure Auto Target Level setting value The Exposure Auto feature can be operated in the Once
49. g long exposure times or small region of interest it is possible that your exposure time is limiting the maximum allowed frame rate If you are using a long exposure time or a small ROI try using a shorter exposure time and see if the maximum allowed frame rate increases You may need to compensate for a lower exposure time by using a brighter light source or increasing the opening of your lens aperture An important thing to keep in mind is a common mistake new camera users frequently make when they are working with exposure time They will often use a very long exposure time without realizing that this can severely limit the camera s maximum allowed frame rate As an example assume that your camera is set to use a 1 second exposure time In this case because each frame acquisition will take at least 1 second to be completed the camera will only be able to acquire a maximum of one frame per second Even if the nominal maximum frame rate of VH 16MG2 model is for example 4 2 frames per second it will only be able to acquire one frame per second because the exposure time is set much higher than normal 54 of 105 RA14 131 018 VH GigE series 10 Camera Features 10 1 Image Region of Interest The Image Region of Interest ROI feature allows you to specify a portion of the sensor array You can acquire only the frame data from the specified portion of the sensor array while preserving the same quality as you acquire a frame fr
50. he Ffc Target Level parameter and the Ffc Mode parameter to On Then the Flat Field data will be applied to the camera e Executing the Ffc Generate parameter will ignore the current camera settings and will temporarily change the camera settings to operate under the following default conditions When the generation of the Flat Field data is completed the original settings of the camera will be restored If the Trigger Mode parameter is set to On and the Trigger Source parameter is set to Software you must provide the number of trigger signals equal to the current Acquisition Frame Count parameter setting s OffsetX Y 0 Width Height Maximum possible values 2 SensorDigitizationTaps Maximum possible taps e Every time you change the binning mode you must generate the Flat Field data again e FFC feature may not work correctly in VH 310G2 due to small sensor size s R U A 84 of 105 RA14 131 018 V H GigE series Flat Field Calibration Block Diagram Scale Down External MD SDRAM Flat Fielding Block Diagram External B Interpolated SDRAM Magnification IR M IF IR IC Figure 10 25 Generation and Application of Flat Field Data Magnified Image Boundary
51. he camera Plug the power adaptor into a working electrical outlet Verify all the cable connections are secure 7 1 Mount Plate CSS e Mount Plate is provided as an optional item e camera can be fixed without using this Mount Plate e mount plate is integrated for VH 310G2 model 24 of 105 RA14 131 018 W 7 2 Precaution to Center the Image Sensor VH GigE series e Users do not need to center the image sensor as it is adjusted as factory default settings e When you need to adjust the center of the image sensor please contact your local dealer or the manufacturer for technical assistance 7 3 Precaution about Blurring Compared to Center e Users do not need to adjust the tilt as it is adjusted as factory default settings e If the tilt settings need to be adjusted inevitably please contact your local dealer or factory representative for technical support 7 4 Installing Vieworks Imaging Solution You can download the Vieworks Imaging Solution at machinevision vieworks com You should perform the software installation first and then the hardware installation s gt 25 of 105 RA14 131 018 V 8 Camera Interface VH GigE series 8 1 General Description As shown in the following figure 3 types of connectors and status indicator LED are located on the back of the camera and have the functions as follows e 1 Status
52. he transmission of one horizontal line is completed Figure 10 10 and 10 11 show the structure which reorders and stores one line video data in the line buffer of FPGA according to the one tap and two taps settings After completing one line transmission the data goes through image processing Then the data will be reordered according to the Pixel Format parameter setting value and stored in the frame buffer Video L ADC 2 gt FPGA Frame CCD gt gt GigE a ine Buffer amp Reorder Figure 10 6 1Tap Image Data Flow Video L ADC FPGA CCD T 2 Frame GigE Video ADC B gt Reorder Figure 10 7 2Taps Image Data Flow ns H R r a 62 of 105 RA14 131 018 VH GigE series 1 Line Buffer Video L N Video L N 1 Video L N 2 em oem mh Figure 10 8 1 Tap Reorder 1 Line Buffer Video L Video R coco um Figure 10 9 2 Tap Reorder The LVDS video data converted in ADC are 14 bits however the camera outputs 12 bits video data The noise performance will be improved on the output image by removing the 2 least significant bits MSB LSB 1T 1 Figure 10 10 12bit Conversion
53. he value b Changes and updates according to the Binning settings c User configurable parameters for settings ROI d User configurable parameters for setting the origin of the ROI Table 10 1 XML parameters related to ROI You can change the size of ROI by setting the Width and Height parameters And also you can change the position of the ROI origin by setting the Offset X and Offset Y parameters Make sure that the Width Offset X value is less than the Width Max value and the Height Offset Y value is less than the Height Max value You must set the size of the ROI first and then set the Offset values since the Width and Height parameters are set to its maximum value by default The Width parameter must be set to a multiple of 4 and the Height parameter must be set to a value greater than the minimum Vertical ROI size shown in the Table 10 2 The Width Max and Height Max parameters will be changed and updated depending on the Binning Horizontal and Binning Vertical parameter settings respectively And also the Width Height Offset X and Offset Y parameters will be updated depending on the Binning Horizontal and Binning Vertical parameter settings respectively ROI Size updated according to the Binning settings may not be restored to its original value For example if you set the Binning Horizontal parameter to X3 with 500 Width the Width parameter will be updated to 166 automatically Then if you set the Width parameter to 166 and the
54. ick the Download button Device Maintenance MCU Defect FFC LUT Defect Defect File Information 1 File Path Cim Decuments and Settings V vieworks Midefect WidefectData c 2 File Size 1 Camera Defect 2 Download Defect 60 Camera Defect Download Upload to PC 95 of 105 RA14 131 018 VH GigE series 3 Once the download is complete the saving process will begin During the saving process make sure not to disconnect the power cord Device Maintenance Defect i FFC Defect Defect File Information 1 File Path m Cim Decuments and Settings V vieworks Mdefect WdefectData c 2 File Size ote 1 Camera Defect 2 Download Defect LCLLLLLLLLLLLLILLLILILILLIILIILILITINENB 00 Camera Defect Download Download Upload to PC 4 After completing the download click the OK button to close the confirmation P i 96 of 105 RA14 131 018 Piles r V L Appendix LUT Download VH GigE series LUT data can be created in two ways by adjusting the gamma values on the gamma graph provided in the program and then downloading the data or by opening a CSV file csv and then downloading the data B 1 Luminance LUT B 1 1 Gamma Graph Download 1 Run Vieworks Imaging Solution 6 X and click the Configure button to display the window as shown below Select the LUT tab and th
55. igger signals when it VH GigE series receives an Acquisition Start command The camera will continue to generate exposure start trigger signals until it receives an Acquisition Stop command Free Run e When you set the Trigger Mode parameter to Off and the Acquisition Mode parameter to Continuous the camera will generate all required trigger signals internally When the camera is set this way it will constantly acquire images without any need for triggering by the user This use case is commonly referred as free run e When you operate the camera in free run you must set the Trigger Overlap parameter to Readout to achieve optimal camera performance The rate at which the exposure start trigger signals are generated may be determined by the camera s Acquisition Frame Rate parameter e Ifthe parameter is set to a value less than the maximum allowed frame rate with the current camera settings the camera will generate exposure start trigger signals at the rate specified by the parameter setting e parameter is set to a value greater than the maximum allowed frame rate with the current camera settings the camera will generate exposure start trigger signals at the maximum allowed frame rate Exposure Time Control with Trigger Mode Off When the Trigger Mode parameter is set to Off the exposure time for each frame acquisition is determined by the value of the camera s Exposure Time parameter For more information abo
56. ignal falls and continues until the tpg Photodiode Transfer signal falls As Figure 9 9 shows there is an Exposure Start Delay refer to Table 9 3 between the rise of the external trigger signal and the point where exposure actually begins The setting value on the Exposure Time parameter is equal to the exposure time because the tsub value of the shutter signal and Transfer Pulse Offset value tog tap are compensated on the exposure time by the camera s logic internally Therefore there is no difference between the setting value on the Exposure Time parameter and the exposure time The tsyp value and Transfer Pulse Offset value are determined by the CCD sensor used in the camera External Exposure Start Trigger Signal gt i Exposure Start Delay shutter Signal JL _ Offset value Transfer Pulse Real Exposure ee Lo Duration determined by the Exposure Time parameter itsub and Transter Pulse Offset value are compensated Figure 9 9 Real Exposure with Timed Exposure Mode S gt 48 of 105 RA14 131 018 W 9 6 2 Trigger Width Exposure Mode When the Trigger Width mode is selected the exposure time is controlled by the external trigger signal VH GigE series The camera generates a shutter signal to clear pixels when an external trigger signal is applied The exposure time begins when the shutter signal falls and continues until the tpd Photodiode Transfer signal falls As Figure 9 10 shows th
57. into the frame buffer e Frame Transmission time the amount of time it takes to transmit an acquired frame data from the frame buffer in the camera to your computer e Transmission Start Delay the amount of time between the point where the camera begins reading out the acquired frame data from the sensor and the point where it begins transmitting the acquired frame data from the buffer to your computer External Exposure Start Trigger signal Exposure Start Delay Exposure Start Delay LFxposure Start Delay Taje Exposure Frame Readout Frame 1 Readout Frame N 2 Readout Frame Readout u j E f E ANMI Start T Transmission Start n Transmission Start Delay Delay Delay Frame Transmission Frame N 1 Transmission Frame N 2 Transmission Frame Transmission Figure 9 11 Timing Chart not drawn to scale A 51 of 105 RA14 131 018 14 The following table shows Exposure Start Delay for VH GigE series VH GigE series Exposure Start Delay Model Triggering during the Idle State Triggering during the Readout State 3 7 us lt Delay lt 19 1 ys 1 Tap VH 310G2 2 2 us 0 02 us 3 7 us lt Delay lt 12 2 ys 2 Tap 8 5 us lt Delay lt 40 4 us 1 Tap VH 2MG2 45 us 0 02 us 8 5 us lt Delay lt 24 0 us 2 Tap 8 3 us lt Delay lt 49 8 us 1 Tap VH 4MG2 4 5 us 0 02 us 8 3 us lt D
58. ircuit through a photo coupler Minimum trigger width that can be recognized by the camera is 1 us If transmitted trigger signal is less than 1 us the camera will ignore the trigger signal External trigger circuit example is shown below 3 3 24 0V Camera ii 5 gt en iy E T 1 180 47 J FET hee 6 Y m N N t5 HR10 7R 4SB SZ zi ls SZ 7 Your GND GND GND WY GND Figure 8 5 Trigger Input Schematic 8 6 Strobe Output Circuit The strobe output signal comes out through a 3 3 V output level of Line Driver IC You can change the strobe output by setting the Digital Control Refer to chapter 10 19 Digital IO Control Camera Strobe lt Strobe Output Figure 8 6 Strobe Output Schematic 30 of 105 RA14 131 018 14 9 Acquisition Control VH GigE series This chapter provides detailed information about controlling image acquisition e Triggering image acquisition e Setting the exposure time e Controlling the camera s image acquisition rate e Variation of the camera s maximum allowed image acquisition rate according to the camera settings 9 1 Overview This section presents an overview of the elements involved with controlling the acquisition of images Three major elements are involved in controlling the acquisition of images e Acquisition Start and Acquisition Stop commands and the Acquisition Mode parameter e exposure start trigger e
59. izontal and Vertical Independent G 1 0 User Defined Lookup Table LUT Adjustable 0 127 LSB at 12 bit 256 steps 1 40 0 32 dB Timed Exposure Trigger Width Exposure Double Exposure Auto Exposure Auto Gain Control 3 3 V 24 0 V 10 mA Asynchronous optically isolated Asynchronous Programmable via Camera 128 MB C mount or F mount F mount 10715 V DC Max 6W 10 15 V DC 10W Operating 5 40 Storage 40 70 68 mm 68 mm X 54 mm 395 g with C mount 68 mm 68 mm X 83 mm 430 g with F mount Table 5 2 Specifications of VH GigE Series VH 5 11 16MG2 12 of 105 RA14 131 018 5 3 Camera Block Diagram VH GigE series 1 Optocoupler Ext trigger zi Line Driver Prog output V Driver a Mise b iS Image Processing 4 N Control Logic gt SDRAM CD Awe Sensor 1 Abit M WEN J Driver Micro Controller Ethernet Controller E FLASH EEPROM Figure 5 1 Camera Block Diagram All controls and data processing of VH GigE cameras are carried out in one FPGA chip The FPGA generally consists of a 32 bit RICS Micro Controller and Processing amp Control Logic The Micro Controller receives commands from the user through the Gigabit Ethernet interface and then process
60. k 9 1 The lower the value the more smear AcquisitionControl Upper limits of Exposure duration ExposureAutoMax 7 000 000 us The higher the value the more motion blur ExposureAutoTargetLevel 100 3995 Target average grey value 1 2bit Tolerance of the target average grey ExposureAutoTolerance 100 2047 value 12 bit If the current grey level is out of the tolerance AEC starts to work Off Gain Auto Off GainAuto Once Gain is adjusted once and then Off AnalogControl Continuous Gain is constantly adjusted GainAutoMin Lower limits of Gain x1 x64 GainAutoMax Upper limits of Gain Table 10 13 XML Parameters related to AEC e You can set the Exposure Auto and Gain Auto feature in any order However we strongly recommend setting the one feature first while turning off the other features for the smooth operation t The maximum allowed Exposure Auto Target Level value may vary depending on the Exposure Auto Tolerance setting value Exposure Auto Target Level 0 Tolerance 4 095 Tolerance 76 of 105 RA14 131 018 14 10 10 Balance White Auto Color Cameras VH GigE series The Balance White Auto feature is implemented on color cameras It will control the white balance of the image acquired from the color camera according to the GreyWorld algorithm Before using the Balance White Auto feature you need to set the Data ROI for Balance White Auto If you do not set the related Data RO
61. l direction Grey Diagonal Ramp Moving XML parameters related to Test Image are as follows XML Parameters Description Test Image Off Set to Grey Horizontal Ramp ImageFormatControl TestImageSelector Set to Grey Diagonal Ramp GreyDiagonalRampMoving Set to Grey Diagonal Ramp Moving Table 10 21 XML Parameter related to Test Image Figure 10 27 Grey Horizontal Ramp SSS gt 88 of 105 RA14 131 018 VH GigE series Figure 10 28 Grey Diagonal Ramp Figure 10 29 Grey Diagonal Ramp Moving The test image may look different because the region of the test image may vary depending on the camera s resolution CAUTION 89 of 105 RA14 131 018 10 18 Reverse X VH GigE series The Reverse X feature let you flip the image horizontally This feature is available in all operation modes Figure 10 30 Original Image Figure 10 31 Reverse X Image On color models of the camera when the Pixel Format parameter is set to Bayer and the AN CAUTION Reverse X feature is used the alignment of the color filter will be changed 90 of 105 RA14 131 018 14 10 19 Digital IO Control VH GigE series The pin number 3 of the control receptacle is designated as programmable output and can be operated in various modes XML parameters related to Digital IO Control are as follows XML Parameters Value Description Invert the output signal of the line Linelnverter
62. ll be directly controlled by the external trigger signal If the camera is set for rising edge triggering the exposure time begins when the external trigger signal rises and continues until the external trigger signal falls If the camera is set for falling edge triggering the exposure time begins when the external trigger signal falls and continues until the external trigger signal rises Figure 9 5 illustrates Trigger Width exposure with the camera set for rising edge triggering Trigger Width exposure is especially useful if you intend to vary the length of the exposure time for each frame External Trigger Signal Period External Trigger Signal LI PEN Exposure duration determined by the External Trigger Signal Width Figure 9 5 Trigger Width Exposure Mode gt 41 of 105 RA14 131 018 V 9 3 3 2 Double Exposure VH GigE series When the Double Exposure mode is selected two frames can be acquired in rapid succession using a single trigger signal The exposure time for the first frame begins according to the current camera settings when the trigger signal is applied to the camera Once the exposure for the first frame is complete the camera reads out the sensor data At this point the exposure time for the second frame begins Then the camera reads out the sensor data for the second frame after reading out the sensor data for the previous f
63. ng Solution 6 X and click the Configure button to display the window as shown below 2 Select the FPGA tab click the File Path button search and select the FPGA upgrade file bin and then click the Download button Device Maintenance Defect File Information 1 File Path Cim Documents and Settings V vieworks FPGA MYyHe BOMHZ 4 2 File Size 2 6 64 1 Camera FPGA 2 Download FPGA Camera FPGA Download subsequent processes are identical to those of MCU upgrade D 103 of 105 RA14 131 018 Ww XML VH GigE series 1 Run Vieworks Imaging Solution 6 X and click the Configure button to display the window as shown below 2 Select the XML tab click the File Path button search and select the XML upgrade file xml and then click the Download button Device Maintenance MCU FPGA Defect FFC LUT AML amp AML URL XML File Informate 1 File Path Cm Documents and Settings V vieworks AML y he 0 6 1 xml 2 File Size 3BaAA 1 Camera ML URL 2 Download XML URL LL D 5e Camera XML Download pamm subsequent processes are identical to those of MCU upgrade ss Hn i a 104 of 105 RA14 131 018 Meworks GigE CCD Cameras Vieworks Co Ltd 601 610
64. ng an exposure start trigger signal to the camera will exit the camera from the waiting for exposure start trigger acquisition status and will begin the process of exposing and reading out a frame see Figure 9 1 As soon as the camera is ready to accept another exposure start trigger signal it will return to the waiting for exposure start trigger acquisition status A new exposure start trigger signal can then be applied to the camera to begin another frame exposure The exposure start trigger has two modes off and on If the Trigger Mode parameter is set to Off the camera will generate all required exposure start trigger signals internally and you do not need to apply exposure start trigger signals to the camera The rate at which the camera will generate the signals and acquire frames will be determined by the way that you set several frame rate related parameters If the Trigger Mode parameter is set to On you must trigger exposure start by applying exposure start trigger signals to the camera Each time a trigger signal is applied the camera will begin a frame exposure When exposure start is being triggered in this manner it is important that you do not attempt to trigger frames at a rate that is greater than the maximum allowed There is a detailed explanation about the maximum allowed frame rate at the end of this chapter Exposure start trigger signals applied to the camera when it is not in a waiting for exposure start trigger acquisiti
65. ntinuous The use of Acquisition Start and Acquisition Stop commands and the camera s Acquisition Mode parameter setting are related If the camera s Acquisition Mode parameter is set to Single Frame after an Acquisition Start command has been executed a single frame can be acquired When acquisition of one frame is complete the camera will execute an Acquisition Stop command internally and will no longer be able to acquire frames To acquire another frame you must execute a new Acquisition Start command If the camera s Acquisition Mode parameter is set to Multi Frame after an Acquisition Start command has been executed exposure start can be triggered as many as specified by the Acquisition Frame Count parameter The camera will continue to react to exposure start trigger signals until the number of exposure start trigger signals it has received is equal to the current Acquisition Frame Count parameter setting At that point the Acquisition Start command will expire Before attempting to acquire another frame you must execute a new Acquisition Start command With Single Frame or Multi Frame Acquisition Mode if you execute another Acquisition Start command while the camera is in the process of acquiring a frame an error may occur CAUTION If the camera s Acquisition Mode parameter is set to Continuous after an Acquisition Start command has been executed exposure start can be triggered as desired Each time an exposure st
66. nto two bytes when 12 bit pixel data are stored in the frame buffer 8 bits of pixel data will be VH GigE series stored in Byte 0 and the rest 4 bits will be stored in Byte 1 The rest 4 bits of Byte 1 will not be used Pixel Data 8 bit 11 1098 76543210 Byte O Figure 10 15 Mono 12 Format Mono 12 Packed With the camera set to Mono 12 Packed the pixel data output is 12 bit monochrome unsigned and GigE Vision specific packed type This type will be divided into three bytes when 24 bit pixel data are stored in the frame buffer 8 bits of pixel data 0 will be stored in Byte 0 and the rest 4 bits will be stored in Byte 1 8 bits of pixel data 1 will be stored in Byte 2 and the rest 4 bits will be stored in Byte 1 Pixel Data 1 Pixel Data 0 Moe eem eoe UE 8 bit 4 bit 4 bit 8 bit 11 10987654 3210 3210 11 10987654 Byte 2 Byte 1 Byte 0 Figure 10 16 Mono 12 Packed Format 67 of 105 RA14 131 018 V Bayer Format VH GigE series When you set the Pixel Format parameter to any Bayer Format in the color camera the bits of pixel data will be reordered to bytes and then will be stored in the frame buffer in the same way as Mono Format For example if you set the Pixel Format parameter to Bayer GR 10 Packed the pixel data will be reordered and stored in the frame buffer as shown in the Figure 10 17 10 least significant bits of green data will be stored in Byte 0 and Byte
67. o all digital channel DigitalRed Apply gain to red digital channel DigitalGreen Apply gain to green digital channel DigitalBlue Apply gain to blue digital channel Set an absolute physical gain value Analog All 1 0 x40 e Analog 1 2 AnalogControl O Gain Auto Off GainAuto Once Gain value is adjusted once and then Off Continuous Gain value is constantly adjusted h Off Gain Auto Balance Off GainAutoBalance 5S Gain Balance for each tap is adjusted once and then Off All Apply black level to all taps BlackLevelSelector 1 Apply black level to 1 Tap2 Apply black level to Tap2 Set an absolute physical black level value BlackLevel 0 255 0 127 LSB 12bit t Adjustable value range may vary depending on the camera set and camera model t The illumination must be of uniform intensity throughout the sensor when performing Gain Auto Balance Table 10 15 XML Parameters related to Gain and Black Level 79 of 105 RA14 131 018 v vieworks VH GigE series 10 12 LUT LUT Lookup Table converts original image values to certain level values Luminance Since it is mapped one to one for each level value 12 bit output can be connected to 12 bit input LUT is in the form of table that has 4096 entries between 0 4095 and VH GigE camera provides a non volatile space for LUT data storage You can determine whether to apply LUT and which LUT to use For more information about how to downl
68. o output the charges moved to the horizontal register during reading out the accumulated charges Charges from the left half of the sensor are shifted towards the Video L and charges from the right half of the sensor are shifted towards Video H Bottom Dark Rows as Bottom Buffer Rows B Active Pixels Left Dark Columns Left Buffer Columns Right Buffer Columns Right Dark Columns B Top Buffer Rows Top Dark Rows Left Dummy Pixels Rigth Dummy Pixels Video L 4 Horizontal Register gt Video R One Tap Two Taps Figure 10 5 Two Taps Sensor Digitization G 61 of 105 RA14 131 018 14 XML parameters related to Sensor Tap Settings are as follows XML Parameters Description One Set the Sensor Readout mode to 1 tap VH GigE series ImageFormatControl SensorDigitizationTaps Two Set the Sensor Readout mode to 2 tap Table 10 4 XML Parameter related to Sensor Tap Settings When you set the Sensor Digitization Taps parameter to One only the left video amplifier Video L will be used to output the video data as shown in the Figure 10 8 And when you set the Sensor Digitization Taps parameter to Two both Video L and Video R will be used to output the video data as shown in the Figure 10 9 When LVDS signals converted from the video data through ADC are transmitted to FPGA the signal data will be stored in the line buffer of FPGA until t
69. o starts to work Exposure Auto Target Level If the grey level of image is dimmer than the lower limit Exposure Auto starts to work Lower Limit Target Level Tolerance The minimum grey level of image Figure 10 19 Exposure Auto Target Level and Exposure Auto Tolerance SSS 74 of 105 RA14 131 018 d V E A Each auto feature has the following operating ranges depending on the object brightness level You can set the VH GigE series operating range by adjusting the minimum and maximum value for each feature Exposure Digital Gain Exposure Max NER GEM Ge ammo umm Digital Gain Max Bright Light Low Light Figure 10 20 Image Level Adjustment When the Exposure Auto or Gain Auto parameter is set to Off the operating procedures are as follow Auto Features Operating Procedures Remarks Both the Exposure and Gain are adjusted On On Exposure gt Gain automatically Manually adjustable the Exposure Manually adjustable both the Exposure and Off Off Table 10 12 Operating Procedures for Auto Features 75 of 105 RA14 131 018 14 XML parameters related to Auto Exposure Control as follows VH GigE series XML Parameters Description Off Exposure Auto Off Target Level is adapted once and then ExposureAuto Once Off Target Level is constantly adapted Refer to Table Lower limits of Exposure duration ExposureAutoMin CO
70. oad LUT to the camera refer to Appendix B 4096 entry tee Lookup Table L 12 bit Data Figure 10 22 LUT Block gt 2 1000 1500 2000 2500 3000 3500 4000 Input Level Figure 10 23 LUT at Gamma 0 5 80 0 105 RA14 131 018 V ey v 4 PA XML parameters related to LUT are as follows VH GigE series XML Parameters Value Description LUTSelector Luminance Luminance LUT Activate the selected LUT LUTEnable Deactivate the selected LUT LUTControl Index of coefficient for verifying the LUT Value LUTIndex e Luminance 0 4095 Output value of the current LUT corresponding to the input value of LUT Index Table 10 16 XML Parameters related to LUT LUT Value 5 ss _ 81 of 105 RA14 131 018 V 10 13 Defective Pixel Correction VH GigE series The CCD may have Defective Pixels which cannot properly react to the light Correction is required since it may deteriorate the quality of output image Defective Pixel information of CCD used for each camera is entered into the camera during the manufacturing process in the factory If you want to add Defective Pixel information it is required to enter coordinate of new Defective Pixel into the camera 10 13 1 Correction Method Correction value for a defective pixel is calculated based on valid pixel value adj
71. om the entire sensor array With the ROI feature you can achieve increased frame rates by decreasing the height of the ROI however decreasing the width of the ROI does not affect the frame rate The ROI is referenced to the top left corner origin 0 0 of the sensor array as follows WidthMax Offset Y OOOOOOO008 OOOOO0008 22 3 LI LI OO Oo OO OO Oo L1 LI OO d LI LI 20 LJ LI LI LJ LI LI 0 0 0O L1 C1 LI HeightMax Height banannanannna amer ill only readout and transmit the pixel data in this area Figure 10 1 Image Region of Interest s B gt 55 of 105 RA14 131 018 4 VH GigE series The XML parameters related to ROI settings are as follows XML Parameters Value Description SensorWidth SensorHeight Effective width of the sensor Effective height of the sensor Maximum allowed width of the image with the current WidthMax camera settings Maximum allowed height of the image with the ImageFormatControl HeightMax current camera settings Width Height OffsetX OffsetY Current width of the image Current height of the image Horizontal offset from the origin to the Image ROI Vertical offset from the origin to the Image ROI The unit for all parameters in this table is pixel a Read only User cannot change t
72. on DeviceControl DeviceUserID Input user defined information 16 bytes Table 10 24 XML Parameter related to Device User ID 10 22 Device Reset Reset the camera physically to power off and on You must connect to the network because the camera will be released from the network after reset XML parameter related to Device Reset is as follows XML Parameters Description DeviceControl Reset the camera physically Table 10 25 XML Parameter related to Device Reset gt 93 of 105 RA14 131 018 14 10 23 User Set Control VH GigE series You can save the current camera settings to the camera s internal ROM You can also load the camera settings from the camera s internal ROM The camera provides two setups to save and three setups to load settings XML parameters related to User Set Control are as follows XML Parameters Description Default Select the Factory Default settings UserSetSelector UserSet1 Select the User Set1 settings Select the User Set2 settings m Load the User Set specified by User Set Selector to the camera UserSetControl Save the current settings to the User Set specified UserSetSave by User Set Selector essee Default is allowed to load only Apply the Factory Default settings when reset UserSetDefaultSelector Apply the User Set1 settings when reset UserSet2 Apply the User Set2 settings when reset Table 10 26 XML Parameters related to User Set Control 10 24 Field Upgrade The camera pr
73. on status will be ignored Acquisition Start Acquisition Stop Command Command Exposure Start Trigger Signal Time L Camera is waiting for an exposure start trigger signal Frame exposure and readout Frame transmission Y Figure 9 1 Exposure Start Triggering c s I al 32 of 105 RA14 131 018 V Applying Trigger Signals VH GigE series The paragraphs above mention applying a trigger signal There are two ways to apply an exposure start trigger signal to the camera via software or via external commonly referred to as hardware To apply trigger signals via Software you must set the Trigger Source parameter to Software At that point each time a Trigger Software command is executed the exposure start trigger signal will be applied to the camera To apply trigger signals via External you must set the Trigger Source parameter to External At that point each time a proper electrical signal is applied to the camera an occurrence of the exposure start trigger signal will be recognized by the camera Exposure Time Control When an exposure start trigger signal is applied to the camera the camera will begin to acquire a frame A critical aspect of frame acquisition is how long the pixels in the camera s sensor will be exposed to light during the frame acquisition If the Trigger Source parameter is set to Software a parameter called
74. or Continuous modes of operation If the Data ROI does not overlap the Image ROI the pixel data from the Data ROI will not be used to control the exposure time The Exposure Auto feature and the Gain Auto feature can be used at the same time When the Trigger Width parameter is selected for Exposure Mode the Exposure Auto feature is not available For more information refer to 10 9 Exposure Auto and Gain Auto T E gt 44 of 105 RA14 131 018 V EM E ey ey d 9 5 Overlapping Exposure with Sensor Readout VH GigE series The frame acquisition process on the camera includes two distinct parts The first part is the exposure of the pixels in the imaging sensor Once exposure is complete the second part of the process readout of the pixel values from the sensor takes place In regard to this frame acquisition process there are two common ways for the camera to operate with Trigger Overlap Off and with Trigger Overlap Readout In the Trigger Overlap Off mode of operation each time a frame is acquired the camera completes the entire exposure readout process before acquisition of the next frame is started The exposure for a new frame does not overlap the sensor readout for the previous frame Figure 9 7 illustrates the Trigger Overlap parameter set to Off and the Exposure Mode parameter set to Trigger Width Acquisition Start Command Ext
75. ovides a feature to upgrade Firmware and FGPA logic through Gigabit Ethernet interface rather than disassemble the camera in the field Refer to Appendix C for more details on how to upgrade i gt 94 of 105 RA14 131 018 W VH GigE series Appendix A Defective Pixel Map Download 1 Create the Defective Pixel Map data in Microsoft Excel format as shown in the left picture below and save as a CSV file csv The picture in the right shows the created Excel file opened in Notepad The following rules need to be applied when creating the file Lines beginning with or are treated as notes a A Each row is produced in the order of the horizontal and vertical coordinate values input sequence of pixel is irrelevant Home Insert Page Layout Form File Edit Format View T comment line Calibri coment line B Z E a ii Paste n neee EE Clipboard gt Font Alignment 699 8 268 10 1 comment line 2 coment line 3 H y 4 2011 3 5 178 7 6 52 8 7 699 8 8 268 10 9 1112 10 10 1713 12 11 608 16 12 13 2 Run Vieworks Imaging Solution 6 X and click the Configure button to display the window as shown below Select the Defect tab click the File Path button search and select the defective pixel map file csv and then cl
76. ponse Wavelength nm Figure 5 5 VH 5MG2 M16 Spectral Response 15 of 105 RA14 131 018 VH GigE series 0 60 Absolute Quantum Efficiency S00 400 aDO OQ 800 EX 1000 Wavelength nm Figure 5 6 VH 11MG2 M6 Spectral Response Measured with AR coated cover glass Absolute Quantum Efficiency aub 40 0 600 rog Bou S00 1000 1100 Wavelength nim Figure 5 7 VH 16MG2 M4 Spectral Response o gt 16 of 105 RA14 131 018 5 4 2 Color Camera Spectral Response VH GigE series The following graphs show the spectral response for VH GigE series color cameras pe cover elass Absolute Quantum Efficiency glass EN NEN E ica ECT au 6 FLUR TE ENT ELLI Wavelength nm Blue Red Green Figure 5 8 VH 310G2 C264 Spectral Response Absolute Quantum Efficiency nm Bad Green Blue Figure 5 9 VH 2MG2 C42 Spectral Response 17 of 105 RA14 131 018 VH GigE series Measured with NS ET po 1 uic AA ON KR ee Absolute Quantum Efficiency A 500 600 TOO BOO UCKCI 000 Wavelength nm Red Green Blue Figure 5 10 VH AMG2 C20 Spectral Response Relative Response Wavelength nm Figure 5 11 VH 5MG2 C16 Spectral Response 18 of 105 RA14 131 018 VH GigE series Absolute Quantum Efficiency Wavelength nm t
77. products derived from this software without specific prior written permission THIS SOFTWARE IS PROVIDED BY THE AUTHOR AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED INNO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE SSS gt 23 of 105 RA14 131 018 W 7 Connecting the Camera VH GigE series The following instructions assume that you have installed an Ethernet Card including related software and Vieworks Imaging Solution in your PC For more information refer to your Vieworks Imaging Solution Installation Manual To connect the camera to your PC follow the steps below 1 Make sure that the power supply is not connected to the camera and your PC is turned off 2 Plug one end of an Ethernet cable into the RJ45 jack on the camera and the other end of the Ethernet cable into the Ethernet Card in your PC Connect the plug of the power adaptor to the power input receptacle on t
78. rame In the Double Exposure mode the exposure time for the second frame equals to the readout time of the first frame There is a just few microseconds or dozen of microseconds between the point where the exposure time for the first frame ends and the point where the exposure time for the second frame begins This is because the camera cannot react to the exposure start trigger signal while reading out the sensor data for the first frame At this point the camera outputs a strobe out signal reflected the exposure time for the first frame External Exposure Start Trigger Signal Exposure Exposure Frama N Frame 1 Exposure Frame Readout Frame N41 Readout Frame Readout Strobe Out d Lo 22 222020LLZ Figure 9 6 Double Exposure 9 3 4 Trigger Delay The Trigger Delay feature specifies a delay in microseconds that will be applied between the receipt of a trigger signal software or external and when the trigger will become effective The Trigger Delay can be specified in the range from 0 to 10 000 000 ys equivalent to 10 s D The Trigger Delay will not operate if the Trigger Mode parameter is set to Off 42 of 105 RA14 131 018 N 9 4 Setting the Exposure Time VH GigE series This section describes how the exposure time can be adjusted manually by setting the value of the exposure time parameter Manual adjustment of the exposure time parameter will only work correctly if the Exposure Auto
79. riggering the start of frame acquisition with an externally generated trigger signal two exposure modes are available Timed and Trigger Width Timed Exposure Mode When the Timed mode is selected the exposure time for each frame acquisition is determined by the value of the camera s Exposure Time parameter If the camera is set for rising edge triggering the exposure time starts when the external trigger signal rises If the camera is set for falling edge triggering the exposure time starts when the external trigger signal falls Figure 9 3 illustrates timed exposure with the camera set for rising edge triggering External Trigger Signal Period i External Trigger signal STL TTL Exposure Exposure duration determined by the Exposure Time parameter Figure 9 3 Timed Exposure Mode Note that if you attempt to trigger a new exposure start while the previous exposure is still in progress the trigger signal will be ignored and an Over trigger event will be generated This rising edge trigger signal S will be ignored External Trigger Signal Exposure duration determined by the Exposure Time parameter Figure 9 4 Trigger Overlapped with Timed Exposure Mode _ uc 40 of 105 RA14 131 018 V F EV ki Trigger Width Exposure Mode VH GigE series When the Trigger Width exposure mode is selected the length of the exposure for each frame acquisition wi
80. s set for Two taps you will be able to acquire frames at a higher rate than if it is set to One tap e Binning feature If binning is enabled the maximum allowed frame rate will increase e The amount of time it takes to read an acquired frame out of the imaging sensor and into the camera s frame buffer This time varies depending on the setting for the Height parameter Frames with a smaller height take less time to read out of the sensor The frame height is determined by the camera s Height settings Image Format Control e exposure time for acquired frames If you use very long exposure times you can acquire fewer frames per second Decreasing the Height parameter can increase the maximum allowed frame rate however the Width parameter does not affect the frame rate When the camera s Acquisition Mode is set to Single Frame the maximum possible acquisition frame rate for a given ROI cannot be achieved This is true because the camera performs a complete internal setup cycle for each single frame and because it cannot be operated with Trigger Overlap Readout mode To achieve the maximum possible acquisition frame rate set the Acquisition Mode parameter to Continuous and the Trigger Overlap parameter to Readout s H A 53 of 105 RA14 131 018 V VH GigE series 9 8 1 Increasing the Maximum Allowed Frame Rate You may find th
81. s turned off before connecting the power cord to the camera Otherwise damage to the camera may result iH m nn Qi 6 of 105 RA14 131 018 14 2 Warranty VH GigE series Do not open the housing of the camera The warranty becomes void if the housing is opened For information about the warranty please contact your local dealer or factory representative 3 Compliance amp Certifications 3 1 FCC Compliance 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 These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expenses 3 2 CE DoC EMC Directive 2004 108 EC Testing Standard EN 55022 2006 A1 2007 EN 55024 1998 A1 2001 A2 2003 Class A 3 3 KC KCC Statement Type Description Class A This device obtained EMC registration for office use Class A and may Broadcasting Communication be used in places other than home Sellers
82. t RR ra 3 of 105 RA14 131 018 VH GigE series 9 3 IO SU IO E ERE 35 SB MOUS no reer er one 35 9 3 2 Using a Software Trigger Signal ccccccccccccccssssseeceeeeeeseeeeeeeeeeeeeseeeeeeeeceeeesessaaeeeeeeeeessaaaaeeeeeeeeess 38 9 3 9 Using an External Trigger Signal aoc po Fco eue 39 9 3 4 Trigger Delay ccccccecccccsesecccceescecceseeeceaececseuseeeseaececsaaeceeseuseeeessaeeessageeeeseaseeessageessnageeessseseeeses 42 9 4 Setting the Exposure Time seesssesssssesssseseneen nennen nennen nn nnn nnns 43 POO US AUO TT 44 9 5 Overlapping Exposure with Sensor Readout 45 9 6 micis mp XPOS oee E 48 9 6 1 Timed Exposure MOde cccccsssseccecceeeseeeecceeuseeeeceeaseeeecseauseeeecseauseeeecseaseeeeessauseeeeessauseeeesesseases 48 9 6 2 Trigger Width Exposure MOde ccccccssseccceeceeeeeceeecaeeeeeeeeeueeseeeeesaeeeceeesseeeeeeeessaaseeeeessaaseeseeesaaaees 49 9 7 Marine Ee ac ERE OTT 51 9 8 Maximum Allowed Frame 53 9 8 1 Increasing the Maximum Allowed Frame 54 10 Camera FEA 6S usura 55 10 1 Image
83. th button search and select the MCU upgrade file srec and then click the Download button Device Maintenance Defect LUT ML MEU File Information 1 File Path Cm Documents and Settings Twieworks 2 O 9 1 RE 2 File Size EAF3C 1 Camera MEU 2 Download MCL Camera MECU Download Download 3 upgrade file download starts and the downloading status is displayed at the bottom of the window Device Maintenance FPGA Defect LUT XML SCRIPT MCU File Information 1 File Path cim Documents and Settings Wvieworks WMU tT Y D1 05 REL 2 File Size F2ZBEZ 1 Camera MEU 2 Download MCU Camera MEU Download Download SSS gt 101 of 105 RA14 131 018 ieworks VH GigE series 4 Once all the processes have been completed turn the power off and turn it back on again Check the DeviceVersion parameter value to confirm the version Or check under the My Computer to verify the upgraded version Device nx e 4 B Computer E8 ID IDO Intel R Gigabit CT Desktop Adapter 2 B ID NVIEWOREKS VH 5MaG2 C 15 VIEWORES VH BMGez CTE MES T 168 254 158 103 84 EA 98 00 03 21 ee Mia VIEWORESUVH bBMG2 C T6 M ACBAE 99 00 03 21500 BB IDIOT Gigabit Network Connection SSS gt 102 of 105 RA14 131 018 Ww C 2 FPGA VH GigE series 1 Run Vieworks Imagi
84. ttings You can verify the current resolution through the Width and Height parameters Since vertical binning is processed in the internal register of CCD the frame rate will be increased and SNR will be improved because the number of the readout process is reduced However the horizontal binning does not affect the frame rate and SNR because it is processed in the FPGA The brightness will be increased about four times because four pixels are summed as one Widthz6576 Height24384 Width 3288 Height 2192 Binning Horizontal gt lt 2 s aa Binning Vertical 2 EE EH EE EH E Quartered Resolution quadrupled response to light Figure 10 3 Binning _ 59 of 105 RA14 131 018 oy o LT MU f K c Y VH GigE series supports 1 2 x3 4 8 binning factors for both vertical and horizontal direction VH GigE series independently 2x2 4x2 cl 000000 Figure 10 4 Binning factors e Even if the binning is performed on the color camera the resulting image will be monochrome e The odd number of binning factor 3 does not supported on the color camera due to the characteristics of Bayer pattern 60 of 105 RA14 131 018 10 3 Sensor Tap Settings VH GigE series With two taps sensor digitization two left and right video amplifiers are used t
85. ut the Exposure Time parameter see 9 4 Setting the Exposure Time n n al 36 of 105 RA14 131 018 V 9 3 1 2 Trigger Mode z On When the Trigger Mode parameter is set to On you must apply an exposure start trigger signal to the camera VH GigE series each time you want to begin a frame acquisition The Trigger Source parameter specifies the source signal that will act as the exposure start trigger signal The available settings for the Trigger Source parameter are e Software You can apply an exposure start trigger signal to the camera by executing a Trigger Software command for the exposure start trigger on your computer e External You can apply an exposure start trigger signal to the camera by injecting an externally generated electrical signal commonly referred to as a hardware trigger signal into the Control Receptacle pin 1 on the camera If the Trigger Source parameter is set to External you must also set the Trigger Activation parameter The available settings for the Trigger Activation parameter are e Rising Edge Specifies that a rising edge of the electrical signal will act as the exposure start trigger e Falling Edge Specifies that a falling edge of the electrical signal will act as the exposure start trigger Exposure Time Control with Trigger Mode On When the Trigger Mode parameter is set to On and the Trigger Source parameter is

User Manual - Stemmer Imaging

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