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Vicon Capture.U Desktop lets you download data that you collected with Vicon Blue Trident IMU sensors and access a walk-through and documentation.

From Capture.U Desktop, you can export data as CSV (both raw data export and Aligned CSV, for synchronized sensor data, enabling you to directly compare IMU axes), or X1D (for import to Nexus) for further analysis.

Watch the Vicon video, Using Capture.U Desktop on YouTube.

When using Capture.U Desktop, note that:

  • Capture.U Desktop is a fixed size window so can't be minimized or maximized.
  • To close Capture.U Desktop, click the Exit button (bottom left of the window).
  • Capture.U Desktop 1.1.1 is supported by Firmware 9.x, and the Capture.U 1.1 app and Nexus 2.10 are supported by Firmware 9.0.4 and later.

For more information about Capture.U Desktop, see:

What's new in Capture.U Desktop 1.1?

Capture.U Desktop 1.1.1

The latest release of Capture.U Desktop addresses issues found in Capture.U Desktop 1.1 and embeds firmware 9.0.4, which is the supporting firmware for both the Capture.U 1.1 app and for Nexus 2.10.

Capture.U Desktop 1.1

Capture.U Desktop 1.1 provides the following features:

Support for Firmware 9

Capture.U Desktop enables you to upgrade your Blue Trident sensors to Firmware 9, which enables integration with Nexus 2.10 and the Capture.U app.


To upgrade Blue Trident sensors:

  1. Connect the sensors to the computer and launch Capture.U Desktop 1.1.1.
    The connected sensors display a red circle to let you know that firmware needs to be upgraded.



  2. Click the Sensors tab.
    Capture.U Desktop informs you of the availability of a firmware upgrade.



  3. Click Upgrade firmware.

     

    When the firmware has finished updating, you can expand the displayed information to view the updated firmware number on the Sensors tab.

Load updated firmware (9.x) to upgrade Blue Trident sensors

If new Blue Trident sensor firmware becomes available (that is, firmware later than 9.0.4), add this file to Capture.U Desktop either by clicking or dropping the firmware file into the Sensors tab.

To revert back to 9.0.4 firmware, remove the added firmware file by deleting the firmware file located in:

C:\Users\Username\AppData\Roaming\Capture.UDesktop\firmware

Synchronize and align data for a CSV export

Capture.U enables you to export a synchronized CSV.  For example, the low-G (16-G) accelerometer, which captures at 1125 Hz, is synchronized and aligned to the high-G (200-G) accelerometer, which captures at 1600 Hz.

To export aligned CSV data:

  1. On the Process tab, select Aligned CSV.



  2. Click Download to export the aligned CSV data.
    All the synchronized and aligned CSV files include _aligned on the CSV export.

Export X1D files

The X1D export option enables you to import captured To Sensor trials into Vicon Nexus 2.10.

To export an X1D file:

  1. On the Process tab, select X1D.



  2. Click Download.
    The X1D file is exported as .imu and system files.



  3. Load this file into Nexus.

Requirements for Capture.U Desktop

The following requirements are the minimum that are recommended and fully supported:

Capture.U Desktop for Windows

  • Windows 10 (64 bit)

Capture.U Desktop for OSX

  • macOS Sierra (10.12)

Download and install Capture.U Desktop

To install Capture.U Desktop on your computer:

  1. Check that your computer software meets the recommended specification (see Requirements for Capture.U Desktop).
  2. Download Capture.U Desktop from:
    https://www.vicon.com/software/capture-u/
  3. Unzip and double-click the .exe file to install.

Connect sensors to Capture.U Desktop

To connect sensors:

  1. Insert each Blue Trident sensor into its USB adapter.
  2. With the supplied micro-USB cables, connect the adapter(s) to the computer.

     

    If you can't connect all the sensors that were used for capturing data because you used more sensors that you have USB ports, connect the sensors to the available ports. You will be able to connect the remaining sensors later. For more information, see Download a trial when some sensors are not connected.
  3. On your computer, start Capture.U Desktop.

  4. To confirm that one or more sensor(s) is connected to Capture.U Desktop, click either Process or Sensors.
    All connected sensors are displayed.



Capture.U icons on the Captures tab

The following icons are displayed on the Captures tab to indicate the status of the sensors:

IconMeaning
Blue Trident sensor is connected to Capture.U Desktop.
Blue Trident sensor is not connected to Capture.U Desktop.
Blue Trident sensor was selected for the trial, but no data has been recorded or data has been erased.
Blue Trident sensor data has been downloaded for the trial.

Download a trial from the sensors

The following steps describe how to download a trial from the sensors where all the sensors used for the capture are connected and no data is missing. For information on other scenarios, see also:

To download a trial from the sensors:

  1. Ensure your Blue Trident sensors are connected to your computer (see Connect sensors to Capture.U Desktop).
    If a red circle is displayed in the top right of the Sensors symbol, the Blue Trident sensors need a firmware update.



    Before attempting to continue, update the firmware (see Update sensor firmware).
    Note that you can't download trials that were captured with the To Sensor capture mode until the sensor firmware has been updated.
  2. Select Process and on the Captures tab, under Select trial to download, click the required trial.

     

    The Process screen changes from the Captures tab to the Preview tab.

     

    Preview shows the Resultant acceleration, not the captured onboard data.

  3. If required, before downloading the trial, you can edit the capture to rename it, crop it, add notes, and/or change the Save location: 
    • To rename the trial, click in the Session and/or Trial fields.



    • To crop the trial, so that you download only the region of interest:
      1. Select the Crop button at the bottom right of the graph. 



      2. Select the required part of the trial by clicking on the graph then dragging over the region of interest.
        The selected region is indicated by a rectangle. If you need to adjust the size of the selected region, drag the sides of the rectangle.
        In the following example, the selected region excludes the start and end of the trial.



      3. Select Apply to crop the trial.

         

        The time of the trial changes to the cropped time.



    • To add notes, click in the Notes field (bottom left).

       

    • To change the file type to download, select from:
      • CSV The default setting
      • X1D For import into Nexus
      • Aligned CSV Exports synchronized sensor data, also as a CSV file, so that you can directly compare your IMU axes.



    • To change the location for downloaded trials, click Save to.
      This displays the File Explorer, enabling you to select the required folder.

       

  4. When you have finished editing the trial, click Download to save the trial data to your computer.



    An orange progress bar indicates the download status.
    When the trial has finished downloading, the trial is labeled Downloaded and green check marks are displayed on each sensor.

     

    The trial data and any notes you created are saved in the Save to folder.

Download a trial when some sensors are not connected

If you can't connect all the sensors that were used for capturing data because you used more sensors that you have USB ports, connect the sensors to the available USB ports. You will be able to connect the remaining sensors later.

To download a trial when some sensors are not connected:

  1. Connect sensors to the available USB ports on your computer (see Connect sensors to Capture.U Desktop).
  2. Select Process and on the Captures tab, notice that connected sensors are displayed in blue and sensors that are not connected are displayed in gray.
    This example shows a trial that was captured with two sensors, but with only one of the sensors connected.



  3. Under Select trial to download, click the required trial.
    On the Preview tab, a message warns you that not all sensors are connected.



  4. Edit the trial if required (see Step 3 in Download a trial from the sensors). To ensure data formatting is consistent, any cropping of the data of the connected sensors is automatically applied when you connect the remaining sensors.
  5. When you have finished any editing, click Download.
    When the trial has been downloaded, it is labeled Partially Downloaded

     

  6. Connect the remaining sensor(s) to the computer.



  7. Select the trial.
    On the Preview tab, notice that the Crop button is unavailable, to ensure the data is formatted in the same way as the previously connected sensors.
    If you cropped the trial when you connected the first set of sensors, the trial is automatically cropped in the same way as the previously connected sensors.



  8. Click Download.
    When data from all the sensors has been downloaded for the associated trial, green check marks are displayed for each sensor.


Download a trial when sensor data has been erased

  1. If you deleted data from one or more sensors that were used in a trial before downloading the data, when you connect the relevant sensor(s), any sensor with deleted data is displayed with a red cross on the Captures tab:



    You can still download data from the other sensors, but when you select the trial, a message warns you that some data is missing.

  2. To continue, select Download anyway.
  3. Edit the trial if required (see Step 3 in Download a trial from the sensors) and then click Download.
    When the trial has been downloaded for all sensors, on the Captures tab, you are warned that the trial has not been discovered on all the required sensors.

Edit a downloaded trial

To change a trial that you have downloaded (for example, if you want to crop the trial), provided that you haven't deleted the data from the sensor, you can re-download the trial and make the required changes.

  1. With the relevant sensor connected, select Process and on the Captures tab, select the required trial. 
    A message notifies you that this session has already been downloaded and asks if you want to continue.



  2. Click Continue.
    You can then edit the trial as required and download in the same way as the original download (see Download a trial from the sensors).


    If you haven't changed the session/trial name and Save location, the trial export files are only differentiated by their download time.

Manage connected sensors

To manage connected sensors, in the main Capture.U Desktop window, click Sensors.

From here you can update the firmware (see Update sensor firmware), delete data from the sensors (see Erase data from sensors), and display detailed information about each one.

At the top right of the window, the number of connected sensors is displayed.

For each connected sensor, the following information is displayed (left to right):

  • Sensor ID number
  • Percentage of storage available for the sensor
  • Battery percentage. Connected sensors are charged if they are not already fully charged.

For further information, click the downward arrow.

The following details are displayed:

  • Sessions: Number of recorded trials on the sensor
  • Firmware version

Erase data from sensors

To remove unwanted data from your sensors, you delete it using the Erase button in the Sensors screen.

To erase data from a sensor:

  1. Ensure the sensor(s) from which you want to erase data is connected.
  2. Click Sensors and then for the required sensor, click Erase.
    A message notifies you that all data will be erased from the sensor and you're given the opportunity to confirm or cancel.



  3. To delete the data from the sensor, click Erase.
    When the data has been erased from the sensor, the Erase button is disabled and if you click the down arrow, you can see that the Sessions information now shows a zero.

Update sensor firmware

Capture.U Desktop enables you to upgrade your Blue Trident sensors to the latest firmware.

To update sensor firmware:

  1. If your sensors aren't plugged in, connect them to the computer (see Connect sensors) and launch Capture.U Desktop.
    The connected sensors display a red circle to let you know that firmware needs to be upgraded.



  2. Click the Sensors tab.
    Capture.U Desktop informs you of the availability of a firmware upgrade.



  3. Click Upgrade firmware.

     

    The status changes to Firmware upgrade in progress.
  4. When the firmware has finished updating, you can expand the displayed information to view the updated firmware number on the Sensors tab.



  5. If other sensors need to have their firmware upgraded, repeat the above steps for each one.
  6. You can now download trials that were captured using the To Sensor capture mode (see Download a trial from the sensors and  Capture to sensor).

Get help on Capture.U

To get help on using Capture.U:

  1. Start Capture.U Desktop and click Help.



  2. Choose from the following options:
    • Guides* Visit the Vicon IMU documentation web page.
    • FAQs* Visit the Vicon FAQs web page.
    • Support* Visit the Vicon Support web page.
    • Start walkthrough. Launch a quick tour of Capture.U Desktop.
      To use this option, ensure that you have first captured data using the To Sensor capture mode in the Capture.U app and connected the sensor(s) to the computer.
      To end the walkthrough at any stage, click Help and then click End walkthrough.
    • Version check. Click the version number (bottom right) to display more detailed version information about Capture.U Desktop.

* Internet access required

Known issues for Capture.U Desktop

IssueWorkaround
Downloaded High G accelerometer data may exhibit "latching". This is where, when the data becomes close to zero, its value is automatically rounded to zero.None