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CoaxPress VN Series User Manual

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Summary of Contents for CoaxPress VN Series

  • Page 2 VN CXP series Revision History Version Date Description 2015-02-12 Initial Release 2015-05-14 Corrected errors on the mechanical dimension 2016-04-22 Added typical power requirements 2017-03-24 Updated the EMC Directive Page 2 of 75 VW40-152-017...

  • Page 3: Table Of Contents

    Installing Vieworks Imaging Solution ................17 Camera Interface ......................18 General Description ......................18 CoaXPress Connector ..................... 19 CoaXPress DIN Connector (75 Ω 1.0/2.3 DIN Receptacle) ............19 7.2.1 Power Input Receptacle ....................20 Control I/O Receptacle ..................... 21 Trigger Input Circuit ......................22 Strobe Output Circuit ......................
  • Page 4 VN CXP series Setting the Exposure Time ....................34 Overlapping Exposure with Sensor Readout ..............35 Electronic Shutter Operation .................... 37 8.6.1 Global Shutter ..........................37 Maximum Allowed Frame Rate ..................38 8.7.1 Increasing the Maximum Allowed Frame Rate ................38 Camera Features ......................39 Image Region of Interest ....................
  • Page 5 VN CXP series 10 Troubleshooting......................67 Appendix A Defective Pixel Map Download ..............68 Appendix B Field Upgrade....................70 MCU ..........................70 FPGA ..........................72 XML ..........................73 Appendix C Position settings according to sequence modes ........74 Page 5 of 75 VW40-152-017...

  • Page 6: Precautions

    VN CXP series 1 Precautions General  Do not drop, disassemble, repair or alter the device. Doing so may damage the camera electronics and cause an electric shock.  Do not let children touch the device without supervision.  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.

  • Page 7: Warranty

    VN CXP series 2 Warranty 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 & Certifications 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.

  • Page 8: Package Components

    VN CXP series 4 Package Components Package Components Mount Plate (Optional) Page 8 of 75 VW40-152-017...
  • Page 9 VN CXP 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. ...

  • Page 10: Product Specifications

    With the VN-25MX, customers in the industrial market can take advantage of 235 million pixels resolution at 8 fps. Its CoaXPress interface supports transmitting image data at up to 6.25 Gbps using a single coaxial cable and up to 25 Gbps using four cables. Featured with high speed and high resolution, this new technology is ideal for inspection systems such as FPD, PCB and semiconductor as well as 3D imaging and digitizing of different objects.

  • Page 11: Specifications

    Exposure Mode Free Run, Timed, Trigger Width 3.3 V ~ 24.0 V, 10 ㎃, Logical Level Input, optically isolated External Trigger CoaXPress Control Port Software Trigger Asynchronous, Programmable via Camera API 0 ~ 7.5 ㎛, 1 ㎚ step Shift Range 0.001 ㎛...

  • Page 12: Camera Block Diagram

    CoaXPress interface and then processes them. The Processing & Control Logic processes the image data received from the CMOS sensor and then transmits data through the CoaXPress interface. And also, the Processing & Control Logic controls the trigger input and strobe output signals which are sensitive to time.

  • Page 13: Sensor Information

    VN CXP series Sensor Information The following graph shows the spectral response for VN-25MX monochrome and color camera. Figure 5.2 Mono and Color Spectral Response for VN-25MX Page 13 of 75 VW40-152-017...

  • Page 14: Mechanical Specification

    VN CXP series Mechanical Specification The camera dimensions in millimeters are shown in the following figure. Figure 5.3 Mechanical Dimensions for VN-CXP F -mount with DIN 1.0/2.3-type Connectors Page 14 of 75 VW40-152-017...

  • Page 15: Installation

    Go on to step 2 if you are using a power supply.  Go on to step 3 if you are using a Power over CoaXPress (PoCXP) Frame Grabber. If you are using a power supply: a. Plug one end of a coax cable into the CH1 of the CXP connector on the camera and the other end of the coax cable into the CH1 of the CXP Frame Grabber in your computer.

  • Page 16: Mount Plate

    VN CXP series Mount Plate  The mount plate is provided as an optional item.  The camera can be fixed without using this mount plate. Page 16 of 75 VW40-152-017...

  • Page 17: Precaution To Center The Imaging Sensor

    VN CXP series Precaution to Center the Imaging Sensor  Users do not need to center the imaging sensor as it is adjusted as factory default settings.  When you need to adjust the center of the imaging sensor, please contact your local dealer or the manufacturer for technical assistance.

  • Page 18: Camera Interface

    ② 6 pin power input receptacle:  supplies power to the camera (if PoCXP is not used). ③ 4 pin control receptacle:  provides access to the camera’s I/O lines. ④ CoaXPress connector:  controls video data and the camera. ① ② ③...

  • Page 19: Coaxpress Connector

    CoaXPress DIN Connector (75 Ω 1.0/2.3 DIN Receptacle) 7.2.1 Figure 7.2 CoaXPress DIN 1.0/2.3-type Connectors The CoaXPress connector on the VN CXP camera complies with the CoaXPress standard and the following table shows the channel assignments. Channel Max. Bit Rate per Coax...

  • Page 20: Power Input Receptacle

    VN CXP series Power Input Receptacle The power input receptacle is a Hirose 6-pin connector (part # HR10A-7R-6PB). The pin assignments and configurations are as follows: Figure 7.3 Pin Assignments for 6-pin Power Input Receptacle Pin Number Signal Type Description 1, 2, 3 +12V DC Input...

  • Page 21: Control I/O Receptacle

    VN CXP series Control I/O Receptacle The control I/O receptacle is a Hirose 4-pin connector (part # HR10A-7R-4S) and consists of an external trigger signal input and strobe output ports. The pin assignments and configurations are as follows: Figure 7.4 Pin Assignments for 4-pin Control I/O Receptacle Pin Number Signal Type...

  • Page 22: Trigger Input Circuit

    VN CXP series Trigger Input Circuit The following figure shows trigger signal input circuit of the 4-pin connector. Transmitted trigger signal is applied to the internal circuit through a photo coupler. The minimum trigger width that can be recognized by the camera is 1 ㎲.

  • Page 23: Acquisition Control

    VN CXP series 8 Acquisition Control This chapter provides detailed information about controlling image acquisition.  Triggering image acquisition  Setting the exposure time  Controlling the camera’s image acquisition rate  Variation of the camera’s maximum allowed image acquisition rate according to the camera settings Overview This section presents an overview of the elements involved with controlling the acquisition of images.
  • Page 24 VN CXP series Exposure Start Trigger Applying 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 8.1). 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.
  • Page 25 To apply trigger signals via CH1 of the CXP Frame Grabber, you must set the Trigger Source parameter to CXPin. At that point, each time a proper CoaXPress trigger signal is applied to the camera by using the APIs provided by a CXP Frame Grabber manufacturer, the exposure start trigger signal will be applied to the camera.

  • Page 26: Acquisition Start/Stop Commands And Acquisition Mode

    VN CXP series 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: ...

  • Page 27: Exposure Start Trigger

    VN CXP series Exposure Start Trigger The Trigger Selector parameter is used to select a type of trigger and only the Exposure Start trigger is available on the VN CXP camera. 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 by setting the Trigger Source parameter to Software, CXPin or LineIn0.
  • Page 28 VN CXP series 8.3.1.2 Trigger Mode = On When the Trigger Mode parameter is set to On, you must apply an exposure start trigger signal to the camera 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.

  • Page 29: Using A Software Trigger Signal

    When you use a software trigger signal to acquire frames, be aware that there is a Trigger Latency due to the characteristics of the CoaXPress. Use an external trigger signal to precisely synchronize the trigger signal with the exposure timing.

  • Page 30: Using A Coaxpress Trigger Signal

    For more information, refer to your CXP Frame Grabber User Manual. A rising edge or a falling edge of the CoaXPress signal can be used to trigger frame acquisition. The Trigger Activation parameter is used to select rising edge or falling edge triggering.

  • Page 31: Using An External Trigger Signal

    VN CXP series 8.3.4 Using an External Trigger Signal If the Trigger Mode parameter is set to On and the Trigger Source parameter is set to LineIn0, an externally generated electrical signal injected into the Control I/O Receptacle pin 1 will act as the exposure start trigger signal for the camera.
  • Page 32 VN CXP series 8.3.4.1 Exposure Modes If you are triggering the start of frame acquisition with an externally (CoaXPress or External) 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.
  • Page 33 When the Trigger Width exposure mode is selected, the length of the exposure for each frame acquisition will be directly controlled by the external trigger signal (CoaXPress or External). 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.

  • Page 34: Setting The Exposure Time

    VN CXP series Setting the Exposure Time This section describes how the exposure time can be adjusted manually by setting the value of the Exposure Time parameter. 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.

  • Page 35: Overlapping Exposure With Sensor Readout

    VN CXP series Overlapping Exposure with Sensor Readout 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 –...
  • Page 36 VN CXP series Guidelines for Overlapped Exposure Since VN CXP cameras operate with overlapped exposure, there are two important guidelines to keep in mind:  You must not begin the exposure time for a new image acquisition while the exposure time of the previous acquisition is in progress.

  • Page 37: Electronic Shutter Operation

    VN CXP series Electronic Shutter Operation VN CXP cameras are equipped with imaging sensors that have an electronic shutter. There are two types of electronic sensors, i.e. global and rolling. VN CXP cameras use sensors with global shutters. 8.6.1 Global Shutter When an exposure start trigger signal is applied to the cameras equipped with a global shutter, exposure begins for all lines in the sensor as shown in Figure 8.7.

  • Page 38: Maximum Allowed Frame Rate

    VN CXP series Maximum Allowed Frame Rate In general, the maximum allowed acquisition frame rate on the camera may be limited by several factors:  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.

  • Page 39: Camera Features

    VN CXP series 9 Camera Features 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 from the entire sensor array.
  • Page 40 VN CXP series The XML parameters related to ROI settings are as follows. XML Parameters Value Description Effective width of the sensor SensorWidth SensorHeight 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 current HeightMax ImageFormatControl...
  • Page 41 VN CXP series On the VN-25MX camera, the maximum frame rates depending on Vertical and Horizontal ROI changes are shown below. ROI Size (H × V) 2 Channels 4 Channels 5120 × 1000 180 fps 360 fps 5120 × 2000 92 fps 184 fps 5120 ×...

  • Page 42: Cxp Link Configuration

    VN CXP cameras must be connected to a CXP Frame Grabber installed in your computer via CoaXPress interface. CoaXPress interface allows you to connect a camera to a CXP Frame Grabber by using simple coax cabling and allows up to 6.25 Gbps data rate per cable. VN CXP cameras support one master connection and up to three extension connections to configure a link.

  • Page 43: Pixel Format

    VN CXP series Pixel Format The camera processes image data in the unit of 10 bit. You can determine the format (8 bits or 10 bits) of these image data transmitted from the camera by selecting the Pixel Format parameter. When the camera is set for 8 bit pixel format, the 2 least significant bits will be dropped from overall 10 bits.

  • Page 44: Data Roi (Color Camera)

    VN CXP series Data ROI (Color Camera) The Balance White Auto feature provided by the color camera uses the pixel data from a Data Region of Interest (ROI) to adjust the related parameters. The XML parameters related to Data ROI are as follows. XML Parameters Value Description...

  • Page 45: White Balance (Color Camera)

    VN CXP series White Balance (Color Camera) The color cameras include the white balance capability to adjust the color balance of the images transmitted from the cameras. With the white balancing scheme used on VN CXP cameras, the Red intensity and Blue intensity can be adjusted individually.

  • Page 46: Gain And Black Level

    VN CXP series Gain and Black Level Increasing the Gain parameter increases the slope of the camera’s response curve as shown in the figure below. This results in a higher grey value output from the camera for a given amount of output from the imaging sensor. Figure 9.5 Setting the Gain Adjusting the Black Level parameter will result in an offset to the pixel values output from the camera.

  • Page 47: Defective Pixel Correction

    VN CXP series Defective Pixel Correction The CMOS sensor may have Defect Pixels which cannot properly react to the light. Correction is required since it may deteriorate the quality of output image. Defect Pixel information of CMOS used for each camera is entered into the camera during the manufacturing process.

  • Page 48: Flat Field Correction

    VN CXP series Flat Field Correction 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: IC = IR / IF Where, IC : Level value of corrected image;...
  • Page 49 VN CXP series Figure 9.7 Generation and Application of Flat Field Data Figure 9.8 Bilinear Interpolated Magnification Page 49 of 75 VW40-152-017...
  • Page 50 VN CXP series The XML parameters related to Flat Field Correction are as follows. XML Parameters Value Description Flat Field Correction Off FfcMode Enables the Flat Field Correction feature. FfcGenerate Generates the Flat Field data. Saves the generated Flat Field data in the non-volatile memory.

  • Page 51: Pixel Shifting

    VN CXP series Pixel Shifting The VN-25MX camera has a feature to shift the imaging sensor to X and Y direction precisely using 2D-Stage. The resulting image can be combined of 4 individual images captured by shifting the imaging sensor to X and Y direction as shown in the figure below.

  • Page 52: Pixel Shifting And True Color Resolution

    VN CXP series 9.9.1 Pixel Shifting and True Color Resolution One benefit of pixel shifting technology in comparison to fixed sensor cameras is its ability to acquire more than 4 times higher resolution than the fixed one. The figures below show a standard output image and 9 shifting output image.
  • Page 53 VN CXP series Another benefit of pixel shifting technology compared to fixed CCD is acquiring True Color image. If a camera uses Bayer Interpolation to produce a color image, unwanted artifacts may occur such as color moiré or false color pixels. Using pixel shifting, no color artifacts or aliasing will occur and the color resolution is optimized. Figure 9.11 Standard Image Color vs.

  • Page 54: Sequence Mode

    (0, 0). When the camera is running in the Free-Run mode, the sequence mode will be deactivated because the sequence mode is synchronized only with Software Trigger, External Trigger or CoaXPress Trigger. Refer to Appendix C for the position configurations according to the sequence modes.
  • Page 55 VN CXP series Figure 9.12 Sequence Mode Timing Diagram The XML parameter related to Sequence Mode is as follows. XML Parameters Value Description Sequence Off Mono4Frame 4 shot Mono Mono9Frame 9 shot Mono StageControl StageMode Mono2FrameH 2 shot Mono in horizontal direction Mono2FrameV 2 shot Mono in vertical direction Bayer4Frame...
  • Page 56 VN CXP series 9.9.2.3 Multi Shot When Multi Shot is enabled, the sequence operation that is followed by the first trigger input will be performed automatically by internal trigger. Internal trigger is generated by calculating the optimized timing reflecting trigger delay and stage setup time.
  • Page 57 VN CXP series The XML parameter related to Multi Shot is as follows. XML Parameters Value Description Multi Shot feature Off StageControl MultishotEnable Enables the Multi Shot feature. Table 9.15 XML Parameters related to Multi Shot Page 57 of 75 VW40-152-017...
  • Page 58 VN CXP series 9.9.2.4 Stage Reset Executing the Stage Reset command will reset the stage. Stage reset performs the following two features depending on the current status of the stage.  Sequence Mode reset  When the Stage Reset command is executed while running the stage, the camera stops and resets the sequence, and then returns to the waiting for the trigger input status.
  • Page 59 VN CXP series The XML parameters related to Stage Reset and Stage Status are as follows. XML Parameters Value Description StageReset Resets the stage. Not to execute the Stage Reset after completing one cycle of sequence. StageControl CalibrationAuto Executes the Stage Reset automatically after completing one cycle of sequence.

  • Page 60: Temperature Monitor

    VN CXP series 9.10 Temperature Monitor The camera has an embedded sensor chip to monitor the internal temperature. The XML parameter related to Device Temperature is as follows. XML Parameters Description DeviceControl DeviceTemperature Displays device temperature in Celsius. Table 9.18 XML Parameter related to Device Temperature 9.11 Status LED A LED is installed on the back panel of the camera to inform the operation status of the camera.

  • Page 61: Test Pattern

    VN CXP series 9.12 Test Pattern To check normal operation of the camera, it can be set to output test patterns created inside, instead of image data from the imaging sensor. There are three types of test pattern; 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 diagonal direction (Grey Diagonal Ramp Moving).
  • Page 62 VN CXP series Figure 9.16 Grey Diagonal Ramp Figure 9.17 Grey Diagonal Ramp Moving The test pattern may look different because the region of the test pattern may vary depending on the camera’s resolution. Page 62 of 75 VW40-152-017...

  • Page 63: Digital Io Control

    VN CXP series 9.13 Digital IO Control The control I/O receptacle of the camera can be operated in various modes. The XML parameters related to Digital IO Control are as follows. XML Parameters Value Description LineIn0 Selects the number 1 pin of the camera’s control I/O receptacle as an input line.
  • Page 64 VN CXP series The camera can provide a Strobe Out output signal. The signal goes high when the exposure time for each frame acquisition begins and goes low when the exposure time ends as shown in the figure below. 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.

  • Page 65: Fan Control

    VN CXP series 9.14 Fan Control A fan is installed on the rear panel of the camera to radiate heat. You can set the fan to turn on or off. You can also set the fan to turn on when a specified internal temperature is reached. The XML parameters related to Fan Control are as follows.

  • Page 66: User Set Control

    Table 9.25 XML Parameters related to User Set Control 9.18 Field Upgrade The camera provides a feature to upgrade Firmware and FPGA logic through CoaXPress interface rather than disassemble the camera in the field. Refer to Appendix B for more details on how to upgrade.

  • Page 67: Troubleshooting

    VN CXP series 10 Troubleshooting When you have a problem with a Vieworks camera, please check the following items.  If no image is displayed on your computer,  Ensure that all the cable connections are secure.  Ensure that the power supply is properly connected. ...

  • Page 68: Appendix A Defective Pixel Map Download

    VN CXP series Appendix A Defective Pixel Map Download Create the Defect 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.
  • Page 69 VN CXP series Once the download is complete, the saving process will begin. During the saving process, make sure not to disconnect the power cord. After completing the download, click the OK button to close the confirmation. Page 69 of 75 VW40-152-017...

  • Page 70: Appendix B Field Upgrade

    VN CXP series Appendix B Field Upgrade Run Vieworks Imaging Solution 7.X and click the Configure button to display the window as shown below. Select the MCU tab, click the File Path button, search and select the MCU upgrade file (*.srec), and then click the Download button.
  • Page 71 VN CXP series Once all the processes have been completed, turn the camera power off and turn it back on again. Check the Device Version parameter value to confirm the version. Page 71 of 75 VW40-152-017...

  • Page 72: Fpga

    VN CXP series FPGA Run Vieworks Imaging Solution 7.X and click the Configure button to display the window as shown below. Select the FPGA tab, click the File Path button, search and select the FPGA upgrade file (*.fpga), and then click the Download button.

  • Page 73: Xml

    VN CXP series Run Vieworks Imaging Solution 7.X and click the Configure button to display the window as shown below. Select the XML tab, click the File Path button, search and select the XML upgrade file (*.zip), and then click the Download button.

  • Page 74: Appendix C Position Settings According To Sequence Modes

    VN CXP series Appendix C Position settings according to sequence modes Ratio for 1 Pixel Mono4Frame Mono9Frame Mono2FrameH Mono2FrameV Bayer4Frame Bayer16Frame Order Page 74 of 75 VW40-152-017...
  • Page 75 http://www.vieworks.com vieworks@vieworks.com...

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