Neurosoft Neuron-Spectrum-61 Technical Manual page 11

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1. Description
1.1. Main Specifications
The main specifications are described in Table 2.
Table 2. Main Specifications
Electrode impedance measurement range:
 offline (impedance measurement mode)
 online (monitoring and recording modes)
Impedance measurement error (offline):
 absolute in the range from 0 up to 10 kΩ
 relative in the range from more than 10 up to 300 kΩ
Impedance measurement error (online):
 absolute in the range from 0 up to 10 kΩ
 relative in the range from more than 10 kΩ up to 75 kΩ
Impedance measurement time in measurement, monitoring and
recording modes by selected channels
Number of channels
Input voltage measurement range
Permissible relative error of input voltage measurement (10 Hz
frequency):
 in the range (modulo) from more than 10 up to 50 µV inclusive
 in the range (modulo) from more than 50 µV up to 350 mV
inclusive
 in the range (modulo) from more than 350 up to 1100 mV
 in the range (modulo) from 0 up to 10 µV inclusive
Sensitivity at signal acquisition (except EP)
Sensitivity at EP acquisition
Sensitivity relative error at printing
Amplitude at displaying and printing of calibration markers (by each
channel)

28 referential channels and 11 direct current channels in the referential channel mode (see page 15)
Parameters
Electrode impedance measurement
Referential channels
Values
0 - 300 kΩ
0 - 75 kΩ
±1 kΩ
±15%
±3 kΩ
±30 %
less than 5 sec

1)
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from –1.1 up to 1.1 V, can be set
by the program with the following
discrete values: ± (350,
500, 650, 900, 1100) mV
±15%
±5%
±2%
not defined
1, 2, 5, 7, 10, 15, 20, 50, 70,
100, 200, 500, 1000 µV/mm
arbitrary sensitivity value can be
assigned in the range from 1 to
10000 µV/mm
1, 2, 5, 10, 20, 50, 100, 200,
500 µV/div.
± 5 %
1, 2, 5, 10, 20, 50, 100, 200, 500,
1000 µV
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