USB3.0 type C 15 meters long cable

• MartyG

  • August 05, 2020 20:36
  • Edited

  Hi Shlomi Shoshani.  The officially recommended supplier for USB-C cables for the 400 Series cameras in the cameras' Intel data sheet document is a company called Newnex.  They can provide industrial-grade USB equipment, including "active repeater" cables that can sustain data over 20 meters and fibre-optic cable for extending range up to 100 meters.  They can also provide screw-lock cables.

  https://www.newnex.com/realsense-3d-camera-connectivity.php 

  httrps://youtube.com/watch?v=GLQgR1jT04M 

  I should emphasize that it is not recommended to perform camera firmware updates over a long cable such as an active repeater extension cable.  So I recommend keeping the official short cable in a safe place so you can take the camera to a computer for a firmware update on the infrequent occasions when it may be necessary.

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• Shlomi Shoshani

  • August 06, 2020 06:35

  MartyG ,

  Thank you for your reply .

  Few questions :

  1. Do I require to add a USB 3.0 PCIe card or it is sufficient to connect the cable to a standard USB3.0 (On board) port?  

  2. Can you tell me if there is an option to recycle the USB port power (turn power Off - ON) via a SW command or via windows OS ?

  I am asking this in case of loosing communication and we need to make a power recycle remotely.

   

   

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• MartyG

  • August 06, 2020 09:39
  • Edited

  1.  A PCIe card may make a positive difference compared to using built-in ports if you choose one with a connector that allows an additional 5V of power can be delivered to the card by the computer's power supply unit via a cable from the PSU.  This helps to keep USB devices operational when they are drawing a lot of power.  It may make a further positive difference if it is an industrial-grade card.  

  Having said that, you can certainly connect the camera directly to an in-built USB port on the computer or to a USB hub.

  2.  You can automatically reset the camera with RealSense scripting using an instruction called hardware_reset().  You can make hardware_reset() conditional on detection of specific custom-defined rules, such as more than 50% of the image having pixels with zero depth. 

  This is very useful in situations where you need to automate resets, such as in an industrial environment where unplugging and replugging the USB cable is not practical or the computer is always unattended..

  The link below has a simplex example C++ RealSense script for hardware_reset():

  https://github.com/IntelRealSense/librealsense/issues/2161#issuecomment-408779150 

  Some RealSense users have also successfully used general (non-RealSense) USB port reset scripts to reset the entire port instead of just the camera.  Such a script could be run from a remote connection.

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