Ambulatory EEG

Vitaport 4 Ambulatory EEG recorder

Channels 1-24

Type

AC-coupled common reference

EEG/EOG/EMG

AC Input Range	5000 µVpp
DC Input Range	> ± 200mV (Ag/AgCl electrodes recommended)
Low pass filter	70 Hz, 2nd order butterworth
High pass filter	0,3 Hz (TC = 0,53S.), 1st order RC
Noise	< 0,5 µV RMS, 0.1 - 70 Hz
CMRR	> 120 dB (1 - 60 Hz) with driven neutral
Input impedance	> 100 MΩ
Sample rates	256 Hz
Resolution	16 bits
Time skew	Synchronous sampling

Channels 25

Type

AC-coupled bipolar

ECG

AC Input Range	5000 µVpp
DC Input Range	> ± 200mV (Ag/AgCl electrodes recommended)
Low pass filter	70 Hz, 2nd order butterworth
High pass filter	0,53 Hz (TC = 0,3S.), 1st order RC
Noise	< 1 µV RMS, 0.1 - 70 Hz
CMRR	> 100 dB (1 - 60 Hz) with driven neutral
Input impedance	> 100 MΩ
Sample rates	256 Hz
Resolution	16 bits
Time skew	Synchronous sampling

Event marker channel

This event will be recorded in a separate marker channel.

Sample rate: 4 Hz

Battery monitoring

Internal continuous battery monitoring channel

Sample rate: 4 Hz

Dimensions and weight

Recorder	70 x 122 x 35 mm	215 gram
Amplifier & connection panel	50 x 105 x 18 mm	100 gram

Battery

Internal rechargeable Lithium Ion polymer

Recording duration

24 hours typically on internal battery

+ 24 hours per hot swap of external 15 mm battery pack

Connectors

1 connector to the electrodes

2 connectors to serial interfaces (computer or serial sensors)

1 connector for battery charger/DC-adapter

SpO2 (Optional)

Oxygen saturation via serial Nonin XPOD adapter

Sample rate: 4 Hz

Pulse Waveform (Optional)

Pulse waveform via serial Nonin XPOD adapter

Sample rate: 128 Hz

Storage

Flash card storage in EDF format

Quality system

Certification: conform Directive 93/42/EEC CE0197

Standards: IEC 60601-1

Neurophysiology