Motion Analysis » FAQ

General queries

Information

Contact us at (+34) 943 31 77 77 or send us an email at info@stt-systems.com

There are several options:

  • We can arrange a live demo at our HQ in San Sebastian
  • We can also arrange an online (Skype) demo where we share our screen and show you how the system works. You would be able to ask as many questions as you want.
  • We can contact a nearby customer or distributor who would show the system to you.

Purchase

1. Contact us at info@stt-systems.com to get a formal quotation.

2. We will provide you with the proforma invoice and payment information.

3. After payment we will send you the system and support you.

Almost to every country. We can do it ourselves or through our distributors. We provide you with a download link for the software and the license. The rest of the hardware equipment is shipped to the address that you provide us.

2-3 weeks for most products, 4-6 weeks for certain items like external devices.

Yes. It is possible to pick up your new system directly at our HQ in San Sebastian, Spain. Kindly bear in mind that taxes will apply unless the product is duly imported in your country.

All items delivered by STT have a warranty period (one or two years, depending on the product) which is clearly stated in your offer. The warranty will cover all factory malfunctions

Support

By purchasing your 3DMA system you get free, unlimited remote support for the installation and first trials. We want you to feel confident asap. With the instructions and tutorials provided and our supervision, your system will be up and running in no time.

Via phone and email. We may also need to remotely access your computer in order to provide assistance. For this purpose, we will ask you to download and run TeamViewer. TeamViewer is a standalone remote client that will provide a secure connection between you and STT for remote control, desktop sharing, online meetings, web conferencing and file transfer.

Depending on the system there might be a problem or not. For iSen and 3DMA there would be no problem. Both software and license can be transferred to a new computer. 2DMA systems are linked to the laptop.

If your security dongle is broken, you can buy a new one from STT. The license will be updated to pair with the new dongle, and this will be done as soon as we receive the old, broken dongle. If your security dongle is lost, then you will have to buy a new software license as well.

Updates

There is roughly one or two major updates every year, and a few minor updates.

Existing users get free updates. For good. With no annual fees. This policy may change in the future (ie, upgrades will have some cost) but it won’t affect existing users.

With the latest version, your system (if it was connected to the internet) would notify you and let you download the latest update. In any case, check out every now and then the software version log at our website and social media. Feel free to request the installer for any newer version.

No. Updates will preserve older captures and database.

3DMA optical systems

Captures

From 50 Hz up to 360 Hz; depending on the camera. Check the camera options below.

It depends on the movement that is going to be analyzed. Gait or cycling movements can be captured at 50-100 FPS, whereas a golf swing requires a higher frequency.

In terms of marker position tracking, its precision is directly dependent on the camera resolution and camera spacing. Based on general configurations (a 5x6m, 6-camera Sports 3DMA system or a 100FPS, 4-camera Cycling 3DMA system for instance) marker precision is <1mm, and any user has the means to check this out.

The system is calibrated with the help of a rod that has equally-spaced markers. Any time after calibration, the user can check the quality of the calibration by moving around this rod inside the capture volume and getting real-time readings of the actual distance between rod markers. This is a particular type of capture protocol in which the system just reads distances. Both the instant measurements and the moving averages are displayed. The error for these readings inside a well-calibrated volume is <1mm, and that's a distance between pairs of markers - therefore the individual positioning error is even smaller, about half of that, in any case also <1mm.

3DMA systems work indoor with any standard light sources like halogen lamps or fluorescent lamps. There is no need to turn off the lights or work in darkness. However, you must be careful to avoid direct sunlight inside the capture area. Curtains or windows shutters will help you avoid this.

Analysis protocols

Protocols are a combination of software tools tailored to analyze a specific gesture or sport. Each protocol involves:

  • a marker configuration
  • a list of graphs
  • relevant biomechanical parameters
  • certain automatically calculated events
  • dashboard
  • a report template

All of these are carefully designed and work together to facilitate the user’s work. The goal: to move from data collection on to data processing and result display as fast as possible.

It depends on the software license. Check the protocols available here

To learn more visit the Analysis Protocols page.

Calibration

The system is calibrated only once, after the camera installation. Note that you will have to calibrate the system again if the cameras are moved. Just for the sake of maintenance, it is advisable to re-calibrate the cameras once every month.

15 minutes the first time you do it, 3 minutes for proficiency users.

Cameras

It depends on the size of the room and the movement you need to analyze. A standard setting would be:

  • Cycling: 4 cameras
  • Running, golf and gait: 6 cameras
  • Other movements and big labs: 8 or more cameras

C-03 SeriesC-13 SeriesQ-13 SeriesC-41 Series
Resolution640×4801280×10241280×10242048×2048
Frame rate100 FPS120 FPS30-240 FPS (adjustable)180 FPS
Latency10 ms8.3 ms4.2 ms5.5 ms
Filter switcher (IR-visible)OptionalOptionalIncludedNo
Max # cameras per computer24249696
Maximum range11 m12.2 m12.2 m30 m
Horizontal FOV38°, 46°, 58°56°42°, 56°51°
InterfaceUSB 2.0USB 2.0GigE/PoE+GigE/PoE+
Image processing modesPrecision Grayscale, Segment, Object, and MJPEG
Number of LEDs262862170
LED strobe modeYesYesYesYes
LED intensity ControlYesYesYesYes
Shutter typeGlobalGlobalGlobalGlobal
Electronic exposure ControlYesYesYesYes
Frame rate controlYesYesYesYes
Ask for further info at info@stt-systems.com

Typically a webcam, for instance, a Logitech c920 or brio, but also a high-speed camera such as IDS UI-3240LE-C-HQ for a higher frequency and better resolution.

2

It depends on the size and form of the room, the movements that are going to be captured and the number of cameras needed. Contact us and we would help you to select the best camera configuration on your room.

Cycling 3DMA

  • Full body analysis
  • One side analysis
  • Road bike measurements
  • MTB bike measurements
  • TT bike measurements

Yes.

It depends on the room space but a standard configuration would work with 4 cameras at 100 Hz.

Yes, some of our customers set the cameras on tripods. However, it is not as practical as EDDO Biomechanics as it takes 1 hour to set everything from the beginning.

From 50 up to 240 Hz depending on the camera model. 100 Hz is the standard configuration.

No. It is an accurate tool that provides with almost all the bike fitting parameters and some references.

To learn more visit the Cycling 3DMA page.

2DMA optical systems

Cycling 2DMA

Yes.

Not at the latest version, but the software includes manual measurement tools for distances and angles.

Yes. Completely portable. It is not bulky and the calibration takes less than 1 minute.

At the latest version, 50-60 Hz.

No. It is an accurate tool that provides with the main bike fitting parameters, some fitting tips and references.

There are two shipping boxes:

  • 71 X 63 x 36 cm – 15 kg (aprox.)
  • 12 X 12 x 170 cm – 3 kg (aprox.)

To learn more visit the Cycling 2DMA page.

iSen and the IWS-STT inertial sensors

IWS-STT IMUs

Size: 56 × 39 × 18 mm

Weight: 46 g

Selectable sampling rate, from 25 to 400Hz

Static Accuracy (Pitch/Roll)<1° RMS

Static Accuracy (Heading)<2° RMS

Acc resolution: 490 μg (16 bit resolution)

Mag resolution: ~0.3 μT (14 bit resolution)

Gyro resolution: 0.06º/s (17 bit resolution)

2-3 hours

On average 3.5 hours.

To learn more visit visit the IWS-STT page.

iSen system

Yes. The information gathered by the sensors could be exported to a CSV file (both rotation data -quaternions- and raw data -accelerometer, magnetometer…-). You can also export biomechanical curves (i.e.: the entire knee flexion-extension angle over time)
We have also developed plug-ins to receive or stream data to third-party software or devices.

The system works through a Wi-Fi network. Wi-Fi networks have a range that’s limited by the environment. A typical wireless router in an indoor arrangement might have a range of 50 meters (160 ft) or less.

Yes. iSen has been synchronized with many other devices. Check out a few options here.

Typically a webcam, for instance, a Logitech c920 or brio, but also a high-speed camera such as IDS UI-3240LE-C-HQ for a higher frequency and better resolution.

To learn more visit the iSen page.