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34 Installation and Specifications Measurement Specifications
364
BIS
EEG Performance Specifications
Leakage Current <=10 µA @ 110V
ac
Input Signal Range 1 mV
p-p
Differential Input Impedance >15 MΩ @ 10 Hz
Max. DC Input Offset Voltage ±320 mV
Input Protection Against defibrillation (5 kV) and electrosurgery
Common Mode Rejection >105 dB @ 5kΩ imbalance and 60 Hz
Noise <0.4 µVRMS (1 to 30 Hz)
Electromagnetic Susceptibility <10 µV
p-p
@ 3 V/m, 26-1000 MHz
Electrode Impedance
Measurement
Range 0 to 30 kΩ
Accuracy
±1 kΩ
Bandwidth 0.5 Hz to 50 Hz (–3 dB)
Low Filter Cut-Off Frequencies 0.5, 1.0, 2.0, and 5.0 Hz
(12 dB/octave)
High Filter Cut-Off Frequencies 15 Hz (65 dB/octave)
30 Hz (75 dB/octave)
50 Hz (85 dB/octave)
BIS Performance Specifications BIS, BISx M1034A, BIS Interface board for MP20/30
Bispectral Index (BIS) Range 0 - 100
Signal Quality Index (SQI) Range 0 - 100%
EMG Range 0 - 100dB
Suppression Ratio (SR) 0 - 100%
Spectral Edge Frequency (SEF) 0.5 - 30.0Hz
Total Power (TP) 0 - 100 dB
Bursts (BISx only) 0 - 30/minute
Noise <0.3µV RMS (2.0µV peak-to-peak)
Wave Scale With gridlines on: ± 25µV, ± 50µV, ± 100µV, ± 250µV
With gridlines off: 50µV, 100µV, 200µV, 500µV
Update Frequency (BIS Numeric) 2048 ms
Bandwidth 0.25 - 100Hz (-3dB)
High Pass Filters 0.25 Hz, 1 Hz, 2 Hz (-3dB)
Low Pass Filters 30 Hz, 50 Hz, 70 Hz, 100 Hz (-3dB)
Notch Filters (for line frequency) 50 Hz, 60 Hz
Impedance Measurement Range 0 to 999 kΩ
BIS Alarm Specifications Range Adjustment Alarm Delay
BIS High/Low Alarm 0 - 100 1 Max. 2 seconds