Introduction
The VNG 4000 by HOMOTH Medizinelektronik GmbH & Co KG is a cutting-edge system designed for vestibular diagnostics. It integrates a combination mask for partial free-sight and dark-measurement with a PCI frame grabber card.

System Requirements
The system requires a Pentium PC with a minimum of 2000 MHz, USB 2.0 port, and is compatible with Windows 98, ME, 2000, and XP.

Methodology
The VNG 4000 employs a two-channel measuring method with real-time recording and artifact suppression, both horizontally and vertically. It supports tests such as spontaneous nystagmus, caloric test, and position test.

Technical Specifications

• Signal resolution: 0.1 degree at 704 x 288 pixels
• Signal rate: 50 Hz
• Infrared light: 950 nm (compliant with DIN EN 60825-1)
• Focus adjustment: One-hand operation with cardanic mounting
• Measurement time: Pre-selected options of 60, 90, 120, 150 seconds

Evaluation and Results
Evaluation can be manual or automatic, with options for individual correction. Key evaluation metrics include nystagmus direction, culmination phase, nystagmus numbers, and slow phase velocity. Results are presented as nystagmus curves, magnified views, butterfly diagrams, or in table form.

Accessories

• 2 video masks with cable powerpack
• 1 PCI framegrabber
• 1 dongle
• 1 installation CD
• 1 instruction manual

Innovative Features
The VNG 4000 is designed with the latest computer technology, offering a user-friendly menu-controlled operation. It records eye movements in real-time, converting them into graphs. The system supports automatic artifact suppression and allows for both automatic and manual evaluation.

Data Management
Results can be stored efficiently on a hard disk in a paradox format file. The system supports easy data transfer to a central EDP system and allows for printing of all measurements and data for documentation.

Future-Proof Design
The VNG 4000 is designed to be future-proof, with the ability to update or upgrade diagnostic capabilities via software downloads from the Homoth homepage.