Description
7
1.
Description
1.1. Main Specifications
Table 1. Main Specifications
Parameters
Values
EEG/EP Channels
Number of channels
8
Sampling rate
100, 200, 500, 1000, 5000 Hz
A/D converter
16 bit
Voltage range
2
–12000 µV
Ratio error of voltage measurement:
in the range from 10 to 50 µV
in the range from 51 to 450 µV
±25%
±7%
Sensitivity
1, 2, 5, 7, 10, 20, 50, 70, 100, 200,
500, 1000 µV/mm
Relative error of sensitivity
±5%
Sweep speed at EEG recording
3, 7, 15, 25, 30, 50, 60, 120, 240,
480, 960 mm/s
Sweep speed at EP recording
5, 10, 20, 50, 100, 200, 500 ms/div
Relative error of sweep speed
±2%
High pass filter
0.01, 0.05, 0.5, 0.7, 1.5, 2, 10 Hz
Low pass filter
15, 35, 75, 100, 150, 200, 250 Hz
Common-mode rejection
not less than 100 dB
Suppression ratio of power frequency by notch filter
not less than 40 dB
Input noise level (from peak to peak)
not more than 2 µV
Input impedance
mot less than 100
MΩ
Patient leakage current
not more than 50 nA
Photic Stimulator
Number of channels
1
Stimulus duration
1
–60 ms
Relative error of stimulus duration
±10%
Stimulation frequency
1
–50 Hz
Relative error of stimulation frequency
±10%
Maximal brightness of LED stimulator
(16000±1600) cd/m
2
Left/right/two-sided stimulation
available
General Parameters and Specifications
Interface
USB
