FAQ

USB3 Vision

How can I save image with specifid number of bits (8bits, 10bits or 12bits) with StViewer?
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8bits image saves with default camera setting.
Please change the pixel format when saving 10bits or 12bits image.
 
Registered Image or Preview Image is selectable for image saves at StViewer.
Registered Image is image with selected Pixel Format of GenICam.
Preview Image is image with selected Destination Pixel Format (Preview image format of StViewer)
When saving image with “Save” icon, preview image saves.
 
■ Monochrome camera
 
Saving “Mono8 (8bits)” image with default setting.
Please follow below procedure to save other than “Mono8 (8bits)” image.
 
  Change “Pixel Format” under “Remote Device” – “Image Format Control” after stop acquiring image.
  Start acquiring image.
  Select right click on image of StViewer then select “Save” – “Registered Image”.
  Select image file format then save image.

■ Color camera
 
Saving “BayerRG8 (8bits)” image with default setting.
Please follow below procedure to save other than “BayerRG8 (8bits)” image.
 
  Change “Preview Pixel Format Mode” under “ImageDisplayWnd” – “View Control” to “Manual” after stop acquiring image.
  Select “Destination Pixel Format” under “Image Format Control” under “PixelFormatConverter”.
  Start acquiring image.
  Select right click on image of StViewer then select “Save” – “Preview Image”.
  Select image file format then save image.
 
Please select “Registered Image” when saving BayerRG8 to 12 image.
The image can save only CSV data or straw data (Sentech original raw data format).
Please refer “SaveAndLoadImage” sample program for conversion from straw data.

Which interface camera do you recommend?
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The recommend interface camera is different based on how does the image acquire. (with PC or without PC)
 
When the image acquiring with PC
    When the image acquiring without frame grabber board
       GigE Vision supports up to 100m cable.
       USB3 Vision can use with USB bus power to achieve one cable solution.
       USB2.0 can use with USB bus power to achieve one cable solution.
 
    When the more stable image acquiring with frame grabber board
       Camera Link is available from “Low resolution / high speed” camera to “high resolution / high speed” cameras.
       CoaXPress can be faster frame rate compare with same resolution of Camera Link camera.
       Opt-C:Link supports up to 100m cable.
 
When the image displaying without PC (camera connects to monitor directly)
       HD-DVI can be connect to monitor directly with HDMI cable.
       3G-SDI / HD-SDI can be connect to SDI supported monitor directly with BNC cable.
       TV format can be connect to monitor directly with BNC cable.

What kind of image acquisition software is available for USB3 Vision camera?
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We provide “SentechSDK Package”. SentechSDK Package includes Viewer software “StViewer”.
When using USB3 Vision camera and “USB2.0 or USB3.0 camera” in same system,
please use “StCamUSBPack” software for Windows environment, “V4L2 USB driver” for Linux environment.
Please download the software from USB Software download
 
Also USB3Vision camera uses with USB3 Vision interface supported Vision software.

What kind of USB3 Vision camera is available?
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0.4M to 12M CMOS based USB3 Vision cameras are available.
 
Please refer below linked page for details of USB3 Vision cameras.
    USB3 Vision camera information
 
* USB3 Vision camera does not include lens and USB cable.
  Please refer accessories for USB camera, cable manufacture website and lens manufacture website to select accessories.

How does power supply to USB3 Vision camera?
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USB3 Vision camera power is supplying from USB port on PC through USB cable.
Some USB3 Vision camera recommend to use with external power supply. Please refer with specifications for USB3 Vision camera.

When using USB3 Vision camera, is there any PC specifications or performance should be careful?
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The performance of USB3 Vision camera is changed depending on performance of USB3.0 host controller (including driver) and USB bus power stability.
Please consider to use USB3.0 port that controlled by USB3.0 host controller from Intel (Intel 7 series or later), Renesas or Fresco when using 4M or larger resolution of USB3 Vision camera.

Which type of cable can be used for USB3 Vision camera?
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Please use within 3.0m cable length of USB3.0 cable for USB3.0 Vision camera due to maximum cable length for USB3.0 cable in USB3.0 standard is 3.0m.
When using more than 3.0m cable length of USB3.0 cable, please confirm the cable characteristics with cable manufacture and make sure the cable works with actual system environment.

How can I check which type of USB is supported in my Windows PC?
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It can be checked “Universal Serial Bus Control” in “Device Manager” of Windows.
 
“USB3.0” includes in name of USB host controller if USB host controller is USB3.0 host controller.
“USB2.0” or “USB Enhanced” includes in name of USB host controller if USB host controller is USB2.0 host controller.

Is there anything to be aware of when using multiple USB3 Vision cameras?
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The performance of USB3 Vision camera is changing depending on performance of USB3.0 host controller
(including driver) and USB bus power stability.
 
If USB3 Vision camera connects to USB3.0 port, which assign to one USB3.0 host controller controls one USB3 Vision camera, performance of multiple USB3 Vision cameras are stable.
Please increase the number of USB3.0 host controller with USB3.0 PCI card if necessary.
 
When USB3.0 port is one port and cannot add USB3.0 PCI card to PC, please use self power USB3.0 HUB.

When multiple USB3 Vision cameras are connected, is there any effect on camera performance?
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When connecting multiple USB3 Vision cameras, the frame rate becomes slower, USB3 Vision camera cannot
recognize or other effect could be occurred depending on performance of PC or USB3.0 host controller.
 
If the performance of USB3 Vision camera is not stable, please check below:
・Driver of USB3.0 host controller
     Please check the latest driver is installed for USB3.0 host controller that controls USB3.0 port that connect
     USB3 Vision camera.
 
・USB power management on PC
     The power of USB port could be shut down automatically by USB selective suspend setting.
     Please “Disable” power saving mode.

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