R40 er en 40-kanals EEG-forsterker fra LifeLines som er designet forrutine-EEG og blir brukt som et av verktøyene for å diagnosere neurofysiologiske lidelser som epilepsi.

Forsterkeren har 32 EEG- og 8 bipolare kanaler samt 2 Aux DC input. Det er innebygget type-BF patient isolation og har USB-interface til opptakssystemet.

Spesifikasjoner

EEG inputs: 32 monopolar touch proof inputs/8 bipolar touch proof polygraphy inputs
• ADC Resolution 24 bits
• Sampling 250-2000 Hz simultaneous sampling all channels
• Input impedance >20 Mohms
• CMRR >120dB @ 50 and 60 Hz
• Equivalent input noise <1.5µVpp, <0.2uV rms
• Gain 12 ±0.5%
• DC offset tolerance 750mVpp (+/-375)
• Quantization 0.17uV/bit @ Gain = 12
• Bandwidth (-3dB) DC to 524Hz @ 250Hz sampling
• Max common mode input voltage 0.4Vpp
• Input bias current < ±0.3 nA
• Front-end Calibration 8mVpp ±5% at 0.98Hz
• Impedance Check current 24nA ±20% at 7.8Hz
Aux, high-level Inputs 2 (channels 39 and 40)
• ADC Resolution 24 bits
• Sampling 250-2000 Hz simultaneous sampling all channels
• Input impedance 100 Kohms
• Gain 4 ±0.5%
• Max Input Vdiff 2.25Vpp dynamic range
• Bandwidth (-3dB) DC to 524Hz @ 250Hz sampling

Auxilary Input/output

• Isolated SpO2 (HR and plethysmogram) from integrated Nonin module
• Isolated patient event button, TTL digital pulse (5V or 3.3V)
• Trigger input from Photic
• Connections, ports and controls
• 55 Electrode Input Connectors, BF isolated, touch proof 1.5mm
• E-cap connector, standard 25-pin D socket
• 2 Aux DC Inputs
• Patient Event Button
• Front-panel push-buttons (2) to increase/decrease Imp Check threshold (2-5-10-20-50)
• Host PC Connector (USB), isolated from patient
• Nonin Xpod (Binder 710 series 3-pin socket) for SaO2
– Nonin interface gives HR, SaO2 and pulse-wave (plethysmogram).
• Micro-SD card port
LED Indicators
• Impedance Check indication on all 40 channels
• Impedance Check Level (2-5-10-20-50)
• Power On
• Wireless operation

Operating Environment

• Temperature: +10°C to +40°C
• Relative humidity: 25% to 95% non-condensing
• Atmospheric pressure: 700mB to 1060mB
Dimensions and Weight
• Dimensions: 17cm x 11cm x 4cm/6.7in x 4.3in x 1.6in
• Weight: 400 g/0.88 lbs