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BERA 4000

Technical Specification Bera (PC-Modul)

system:
standards:
isolation:
stimulus:
polarity:
intensity:
rate:
masking:
measurement:
EEG amplifier:
EEG gain controlled:
A/D converter:
analysis-time:
artefacts:
filters:



results:


dimensions:
weight:
measure-cable:
power supply:
accessories:

system - requirements
Pentium 350 or higher; 32 MB RAM; 20 MB HD
LPT port
Windows 9x

microprocessor controlled with measurement of electrodes impedance
EN 60601-1 / 1-1 / 1-2 / AGERA
galvanic separated electrodes
click: 50...500 us
positive, negative and alternating
0 - 110 dB SPL
1 - 50 per sec in 0,1 steps
0 - 80 dB with white noise
1 channel
80 dB
automatic or manual
12 bit
10 ms
online elimination (time and amplitude)
1. highpass 100 - 150 - 200 - 300 Hz
2. lowpass 1 - 2 - 3 - 8 kHz
3. software filters
4. 50 Hz notch filter results:
1. curve-diagrams 8x right and 8x left
2. latency-diagram
3. direct comparision right / left dimensions:
(W X D X H) 290 X 250 X 75 mm
1,8 kg
ca. 3000 mm
90-269VAV 45VA
1 headphone DT 48 A
1 patient measuring cable
2 bags standard electrodes at 30 pieces
1 medical power supply
1 connection cables set
1 program CD
1 instruction manual

                       technical modifications reserved

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