The noise cancellation strategy is based on the use of a combination of cost optimized shielded environment and real time compensation (software gradiometers) performed using reference magnetometer measuring the environmental disturbances.
The dewars are build on the basis of monolithic structures of compound materials for maximization of safety and reliability: low noise and low consumption are obtained with proprietary technology.
On this basis several sensor array configurations have been developed, optimized for different applications. Four sensor array configurations are available today:
ARGOS 500 - a helmet shaped biovectormagnetometer specially designed for Magnetoencephalography. The sensor array consists of 165 SQUID sensors triplets located in 165 indipendent measurement sites, with an inter-sensor separation less then 30 mm for appropriate spatial sampling. Three orthogonal triplets are available for noise cancellation.
Due to the modularity and simplicity of the basic structure,
design variations can be easily realized to take into account requirements
for special applications.
FURTHER TECHNICAL SPECIFICATIONS
Bioelectrical Amplifier - low noise, high impedance, differential input biopreamplifiers, modularly expandable between 32 and 128 channels. The maximum number of electrical channels usable simultaneously with the magnetic recordings depends on the choosen configuration of magnetic sensor and data acquisition system.
Data Acquisition System - modularly expandable until 644 channels; resolution of conversion of 24 bits; fixed sampling rate of 8.4kHz; DC coupled or AC coupling at hardware level, acquisition bandpass is determined via digital filters.
- continuous mode - acquisition with operator or external control
supports multiple coded triggers
supports text labeling of events
- segmented mode - supports multiple code trigger
supports internal control of stimulus generator
supports internal threshold triggering
supports external triggering
Mass Storage Capability
ultra high speed disk for primary storing 100 GB
RAID disk system for data storing and analysis few TB
Archive on CD-ROM, DVD or MOD
Real Time Monitoring
dedicated video processor and high resolution monitor
continuous display of patient data stripchart recorder style, max 64 channels simultaneously
preconfigured channels configurations or customized configurations
support interactive display customization
operates interactively or downloading preconfigured measurement protocolls
dedicated video processor and high resolution monitor for real time monitoring of
data or preanalysed data for decisional use
supports data archiving
supports hardware monitoring and maintenance procedures and diagnostics
OMEGA Data Analysis Software