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Polhemus Fastrak
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Polhemus Fastrak: Widely used 6 DOF magnetic tracker up to 4 sensors.     Online:
 
theblurb
    'theblurb' is the promotional marketing literature provided for this product.

Polhemus Fastrak
The industry standard in motion tracking since 1994, FASTRAK is proven technology with real world credentials. Offering real time 6 Degree-Of-Freedom (6DOF) tracking with virtually no latency, the award-winning FASTRAK is prepared for any challenge. Use it for head, hand and instrument tracking, biomechanical analysis, graphics and cursor control, digitizing and pointing, stereotaxic localization, telerobotics and more. Capture your data with FASTRAK, the ultra-accurate, maximum reliability electromagnetic motion tracking system.

FASTRAK tracks the position (X, Y, and Z Cartesian coordinates) and orientation (azimuth, elevation, and roll) of a small sensor as it moves through space. The system's near zero latency makes it ideal for virtual reality interfacing, simulators and other applications where real time response is critical. FASTRAK is also well suited for biomechanical applications such as gait and joint movement analysis.

Adding a stylus converts your FASTRAK into a free form digitizer ideal for creating files that can be used in popular computer graphics programs. With the stylus, you can get pinpoint accuracy of unlimited X, Y and Z data points. Capturing data with the ergonomically designed stylus is as simple as pressing its button.

FASTRAK delivers exceptional stability as it's essentially unaffected by facility power grid fluctuations. Update rates are always maintained because AC magnetics offer superior signal to noise ratios. Sophisticated digital signal processing helps provide optimal signal. To further ensure unrivaled performance, adaptive filtering is available as a standard feature.

Easy Setup
After unpacking FASTRAK for the first time, the system will be up and running in just minutes. Simply install the included software, connect the FASTRAK to your PC's USB or RS-232 port, connect the sensor and source, power on, and you're good to go. Special FASTRAK synchronization circuitry yields reliable performance even when FASTRAK is used in close proximity to a CRT display.

Advanced AC Technology
Polhemus pioneered AC motion tracking and has refined and perfected the technology through numerous generations. Unlike products based on pulsed DC technology, Polhemus trackers are not negatively affected by the earth's magnetic field, power outlets or electric motors. Because AC tracking is also more accurate and faster, it's clearly the superior choice. In fact, Polhemus originated pulsed DC technology, but chose not to pursue it because of performance shortcomings.

There is no need to worry about maintaining a clear line-of-sight between the sensor and source. Unlike sonic or laser devices, FASTRAK is not affected by signal blocking and interference.

Features
  • Real Time: Virtually no latency. Digital Signal Processing (DSP) technology provides 4ms latency updated at 120 Hz. And data is transmitted to the host at up to 100K bytes/sec.
  • Improved Accuracy and Resolution: Accuracy of 0.03" RMS with a resolution of 0.0002 in./in. makes this the most precise device of its kind.
  • Range: Standard range is up to 10 feet. Operation over a range of up to 30 feet is now possible with the optional LONG RANGER transmitter.
  • Multiple Receiver Operation: Permits measurement of up to 4 receivers on a single system and up to 16 receivers at a time, utilizing four multiplexed systems.
  • Reliable: From the pioneer in 3D position/orientation measuring devices, in business since 1970. Factory calibrated, never needs adjustment.
  • Multiple Output Formats: Position in Cartesian coordinates (inches or centimeters); orientation in direction cosines, Euler angles or Quaternions.

    Applications:
  • Virtual Reality: From the beginning, Polhemus 3SPACE systems have been the systems of choice for VR head and body tracking applications. Now FASTRAK takes you to the next generation with real time tracking.
  • Head-Mounted Displays: FASTRAK is the consummate solution for head-mounted displays utilized in military, VR, or simulator applications. FASTRAK virtually eliminates latency (lag).
  • Biomechanical Analysis: Mount up to 32 receivers on parts of the anatomy and collect real time relative movement data for gait and limb analysis. Perfect for leg, knee, joint, spinal or shoulder rotational measurement.
  • Graphics: The natural way to manipulate graphics for animation or simulation. The receiver mounted in mouse, stylus, or other hand held device is the ideal way to gain real time control over the placement of = cameras, light sources, projectors, or any movable image.
  • Stereotaxic Localization: The receiver can be mounted on any non-metallic object (such as a robotic prosthesis) to determine its position and orientation.
  • CAD Database: Develop databases of complex non-metallic objects for CAD, CAE, computer graphic models or simulation.
  • Dimensional Archiving: Collect actual dimensions of objects such as artifacts, ARChaeological items, museum sculptures, and other items.
  • Anatomical Measurements: Collect databases of anatomical features, body volumes, joint relationships and body contours
  • thefacts
        'thefacts' is the simple factual description of the product provided for you by our technical experts.

    Polhemus Fastrak

    sPECS
        Detailed product specifications.
    Spec product_mocaptrack_polhemus_fastrak Polhemus Fastrak
    Degrees-of-Freedom 6DOF
    Number of Sensors 1-4
    Update Rate 120 Hz (divided by number of sensors)
    Static Accuracy Position 0.03in RMS
    Static Accuracy Orientation 0.15 RMS
    Latency 4ms
    Resolution Position at 30cm range Resolution Position per inch of source
    and sensor separation
    Resolution Orientation 0.025
    Range from Standard TX2 Source Up to 5 feet or 1.52 meters
    Extended Range Source Up to 15 feet or 4.6 meters
    Interface RS-232 or USB (both included)
    Host OS compatability GUI/SDK XP/Vista/Win7 (32-bit and 64-bit)
    Linux: Open-source application available
    prices
        Up-to-date price lists in your preferred currency.
    Model USD
    product_mocaptrack_polhemus_fastrak Fastrak (4 input) with 1 sensor
    Magnetic tracking system with up to 4 sensors
    $ 8,255
    product_mocaptrack_polhemus_fastrak Fastrak Stylus 3" Pointed Nib
    10' or 20' Cable, please specify
    $ 1,626
    product_mocaptrack_polhemus_fastrak Fastrak Stylus 3" Rounded Nib
    $ 1,626
    product_mocaptrack_polhemus_fastrak Fastrak Stylus 8" Pointed Nib
    10' or 20' Cable, please specify
    $ 1,300
    product_mocaptrack_polhemus_fastrak Fastrak Stylus 8" Rounded Nib
    10' or 20' Cable, please specify
    $ 1,300
    FAQs
        If you have not found the info you want above, try here.
     q   Why won’t my FASTRAK communicate with the host computer?
     a   The setup should be rechecked. Make sure that you are using a Null modem RS-232 cable. The I/O selector switch settings (on the rear panel of the unit) should match your setup in the Terminal emulator that you are using. The default settings of the FASTRAK can be found on page 5 in the Getting Started section of the FASTRAK users manual.
     q   I have never used HyperTerminal in Windows before. Can you explain how to make it work?
     a   You will need to set up the FASTRAK system according to the manual. Once this is completed, open the serial connection using the Windows program HyperTerminal.

    Here is a quick set up:

    *Click Start, point to Programs, Accessories and click HyperTerminal.
    *Double-click the HyperTerminal.exe icon.
    *Enter a session name, choose an icon and click OK.
    *In the “Connect using” field, select Com1 or Com2 (depending on your port connection) and click OK.
    *In the “Bits per Second” field select 9600.
    *In the “Data bits” field select 8 (default).
    *In the “Parity” field select None (default).
    *In the “Stop Bits” field select 1 (default).
    *In the “Flow Control” field select None and click OK.

    This and more detailed information can be found in the User’s manual beginning on page 6.
     q   Sometimes when I am taking data with my FASTRAK the X data is not accurate and the Y and Z signs change. What causes this?
     a  The most common reason for this phenomenon is that the receiver has probably moved into a different hemisphere relative to the transmitter. The FASTRAK system is defaulted in a +X hemisphere which means that the system data will be “correct” in this hemisphere only. Note: The +X hemisphere is the side of the transmitter opposite from where the cable comes out of the transmitter shell. Page 57 of the Users manual explains the different hemisphere options.
     q   Why is it that sometimes my measurements do not make sense? For example, Why does the measurement for Z change when I move steadily forward in X?
     a   The system is probably being affected by the presence of metal objects in the test environment. Since the system uses electro-magnetic technology, the presence of metal can cause distortion and prevent the system from calculating accurate measurements. This distortion can be caused by such things as metal desks, filing cabinets, or metal reinforcement in walls, floors, ceilings, tables and chairs.
     q   What can I do to reduce the inaccuracies caused by metal distortion?
     a   The best solution is to find a larger room that will allow the user to locate the transmitter and receiver farther away from metal objects. You may also try experimenting by moving the transmitter and receiver to different parts of the room, which are further away from metal.
     q   How do I know if metal in my test environment will affect the accuracy of my tracker?
     a   The general rule of thumb is three times the separation distance between the transmitter and receiver. For example. If the separation distance is one foot, metal within three feet of the transmitter or receiver may cause distortion and inaccurate measurements.
     q   What kind of an update rate can I expect to receive from my FASTRAK?
     a   The update rate will vary depending on how many receivers are being used. For instance, 1 receiver allows 120 updates per second and 2 receivers allows 60 updates per second per receiver, 3 receivers allows 40 updates per second per receiver and 4 receivers allows 30 updates per second per receiver.
     q   Is this product supported in Virtools?
     a   Yes
     q   Could I use two Fastraks in one area for a large capture space?
     a   Yes, you could have four Fastraks with different frequencies or connected with a sync cable. The system is capable of operating at any of four discrete carrier frequencies. Different carrier frequencies allow operation of up to four FASTRAKs simultaneously and in close proximity to one another.
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