Aspect A-2000 BIS - Page 90

SECTION 8 SPECIFICATIONS, WARRANTY AND
SOFTWARE LICENSE AGREEMENT
8-2
EEG Specifications:
• Epoch Duration:
2 seconds
• Artifact Rejection:
Automatic
• EEG Scales: 25 μV/div (+/- 1 mV Full Scale)
Display Type – EEG: 5, 10, 25, 50 or 100 μV/div
• EEG Sweep Speeds:
25 mm/sec
Display Type – EEG: 15, 25, or 30 mm/sec
• Computed Parameters:
Bispectral Index, 95% Spectral Edge Frequency,
Suppression Ratio, EMG, and Signal Quality Index
• User-defined Displays:
TREND, DSA, the BIS Log, and real-time EEG
waveforms
• Update Rate:
1 second for BIS Index, 10 seconds for Trend/DSA
• Event Markers:
User selected
• Alarms:
Auditory and visual, user adjustable limits
• Filters:
ON (2 – 70 Hz with notch) or OFF (.25 – 100 Hz)
• Mode:
Sensor automatically selects mode.
Digital Signal Converter Specifications:
• Analog to Digital Converter:
Noise-shaped sigma-delta
• Sampling Rate:
16,384 samples/second
• Resolution:
16 Bits at 256 samples/second
• Input Impedance:
50 Mohms minimum
• Noise: < 0.3 μV RMS (2.0 μV peak-to-peak);
0.25 Hz to 50 Hz
• Common Mode Rejection:
(Isolation mode)
110 dB at 50/60 Hz to earth
ground
• Bandwidth:
DSC – 2: 0.16 – 800 Hz
DSC – XP: 0.16 – 450 Hz