Technical Specifications         

The NEW Silent Vision™ 6000 and 7000 Series systems offer an outstanding level of performance and features.  Choose the SV-6010 fiber optic visual system or SV-7020 fiber optic visual system if you have an self-EMI shielded bore, or an MEG.  Choose the SV-6011 LCD projection system for presenting visual stimulation using rear-screen projection techniques or SV-7021 fiber optic visual system if you want a binocular visual system.

Silent Vision^TM Benefits:

• Eyetracking simultaneous with paradigm presentation
• Truly Inert Visual Presentation Device
• Superior Visual Capabilities for fMRI and Patient Comfort
• Calibrated System Available for fMRI Use
• Binocular Glasses Available
• Compact, Portable System for Multi-Imaging Sites
• Modular System for Easy Upgrading
• A Relaxed, Comfortable Environment for Your Patients
• Increased Successful Examinations
• Fully Compatible with the Silent Scan^TM Audio System

Silent Vision's Guarantee
Silent Vision^TM is the most cost-effective visual presentation system you can buy. Avotec uses the highest quality components to ensure performance. Silent Vision includes a one year limited warranty. Use Avotec's installation service or call us about self-installation.

Silent Vision™ the best in the world!   You owe your patients.  You owe yourselves.

Silent Vision™Glasses and Image Guides
The fiber optic glasses and image guides are the heart of the Silent Vision^TM system. Composed entirely of glass and plastic, they are a truly inert visual presentation device. There are two types of glasses available.

Binocular glasses, provide independent visual input to each eye, a feature particularly important for fMRI applications. This might be as simple as stimulating each eye separately, or a sophisticated stereoscopic stimulation.

Both types of glasses feature adjustments for inter-pupillary distance (IPD) and eyesight correction. And the optics have been designed to make the image less sensitive to eye position.

The flexible fiber optic image guides are the link between the glasses and the color LCD projector. This flexible link not only makes the glasses easy to use, it also makes it possible to use new glass designs without replacing the entire visual system.

Mounting the Silent Vision^TM Glasses
A visual device must work with many patient anatomies, as well as with different types of equipment. So mounting and positioning a visual device is a very important consideration, and one that Avotec has carefully considered in designing the Silent Vision^TM visual system.

For the stringent requirements of fMRI, there are several Silent Vision^TM mounts for head coil use. The mounts are compact so they can be used with other devices such as bite bars. They also feature adjustments for accurate positioning that ensure glasses stay in position. And the mounts work with both the binocular and bi-ocular glasses.
If you have a particular application that our standard mounts do not satisfy, Avotec would be happy to design and build a custom mount.

Video Interface and Projector
The video interface accepts the video input to the Silent Vision^TM system, while the projector converts these inputs into a visual form for the glasses.

The video interface accepts many types of video input, ranging from VCRs to computers. These video inputs are sent to the projector over a fiber optic link to ensure that interference with your imaging process never occurs. The video interface provides a color monitor for each input channel, so you always know what your patient is watching. And the simple on/off switch is all you need to operate the Silent Vision^TM system.

At the projector, the input from the video interface is converted to a visual image and coupled to the fiber optic image guide and glasses. The projector has a full range of adjustments so that details such as color and contrast can be set to your particular needs.

Portability
The video interface and projector are very compact and easily moved. For multi-imaging sites, you can simply unplug the video interface and projector (leaving the image guides and glasses connected and the cables in place) and move the Silent Vision^TM visual system from one location to another.

Technical Specifications

Components
Video Interface with dual/single color LCD monitors, dual/single channel color LCD projector, power and fiber optic cabling and connectors between video interface and projector, dual/single image guides, binocular/bi-ocular glasses, choice of glasses mount or optional custom mount.

Physical
Video Interface, 4.5"H x 9.5"W x 11"D, 5 lbs; Projector, 6.0"H x 5.5"W x 10.5"D,10 lbs. magnetically inert; Image Guide, 12.5', 1.3 lbs.; Binocular Glasses, 27mm H x 97mm W x 227mm L, 285g; Glasses and Image Guides, plastic and glass construction.

Video inputs
NTSC or PAL (please specify); VGA, SVGA, MAC inputs with converter (optional or user supplied).

Visual/Optical
Field of View (FOV) 30 degrees horizontal x 23 degrees vertical (nominal); Focus +/-6 diopters; Inter-pupillary Distance (IPD)56 to 68 mm; Resolution (projector LCD) 800H x 225V.

Response Times
LCD (10-90% luminance); On (typical/max): 8/40 msec; Off (typical/max): 40/60 msec; On/Off frequency (typical/min): 20 Hz/10 Hz.

Electrical
110VAC/50-60HZ, 6.5 amps, fused; also in 220VAC, please specify.

Cabling
Power Cable, 2 shielded twisted pairs, 200 ft. (max); Fiber Optic Video Cable (ST connectors), 200 ft. (max); Power Cord, 3-wire grounded, 7 feet.

Colors
Housings/Glasses: pearl white, charcoal gray accents.

Specifications subject to change without notice.

Avotec, Inc.
603 N. W. Buck Hendry Way
Stuart, FL  USA 34994
Telephone (772) 692-0750    Fax (772) 692-0788
avotec@avotecinc.com
www.avotecinc.com

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