EEG amplifiers NVX
FLEXIBLE EEG ACQUISITION FOR CLINICS AND RESEARCHERS
NVX is the DC amplifier with 24, 32 or 48 monopolar channels for electrodes and 4 auxiliary bipolar channels for sensors NeoSens. The device is used in training systems, clinical and scientific researches as a part of computer-based research system for short-term registration of the electro-physiological signals, primarily EEG. The amount of channels and presence of auxiliary channels depends of models.
Basically NVX amplifiers is used with NeoRec application software. NeoRec is software for the acquisition of EEG and other biomedical signals during the process of scientific or medical research. The program records the signals in various file formats for further analysis and processing by third-party software.
Supported file formats: EDF+, BDF+, GDF, EEG, SM.
For viewing or processing the recorded data, the following third-party programs and software packages are recommended: EDFbrowser, Polyman, SigViewer, EEGLAB, ERPLAB, OpenViBE, BioSig.
AVAILABLE MODELS
- NVX24 with EEG DC monopolar channels, 1/1 input/output triggers
- NVX36 with 32 EEG DC monopolar channels, 4 DC AUX bipolar channels for probes, 9/1 input/output triggers, OLED display
- NVX52 with 48 EEG DC monopolar channels, 4 DC AUX bipolar channels for probes, 9/1 input/output triggers, OLED display
SPECIFICATION
| NVX 24 | NVX 36 | NVX 52 | |
| EEG DC monopolar channels | 24 | 36 | 52 |
| AUX bipolar channels | - | 4 halvanic isolated from EEG for probes | |
| TTL triggers | 1 input / 1 output | 9 input / 1 output | |
| Display | - | Graphic OLED | |
| EEG dynamic range | ±400 mV | ||
| EEG channel’s input impedance | more 100 MOhm @ DC | ||
| EEG channel’s noise | less 0.9 uV p-p @ 0,1...30 Hz | ||
| EEG test signal | 200 μV (±1%), 1 Hz | ||
| Electrode impedance measurement range | 1...120 kOhm (±10%) @ 30 Hz | ||
| AUX channel’s dynamic range | 0...4 V | ||
| AUX channel’s input impedance | more 100 MOhm @ DC | ||
| AUX channel’s noise | less 15 uV p-p @ 0,1..30 Hz | ||
| AUX probe powering | +5 V (±5%). Up to 15 mA per probe with electronic protection | ||
| Digitalization | 24 bit, 6th order delta-sigma modulator with 64x oversampling, one converter per each channel | ||
| High-pass response | DC coupled and digital filtration by application software | ||
| Sampling rate | 125, 250, 500, 1000, 2000 Hz @ all channels 5000 Hz @ 24 EEG monopolar or bipolar channels 10000 Hz @ 16 EEG monopolar or bipolar channels 50000 Hz @ 4 EEG monopolar or bipolar channels | ||
| Control and powering | from USB +5V, 450 mA | ||
| Safety | IEC 60601-1, IEC 60601-2-26, class IIa, type BF | ||
| Size | 200 х 155 х 40 mm | ||
| Weight | less 650 gr | ||
