Table 1 System specifications for study devices

Platforms

Windows XP, 7, 8

Window XP, 7, 8

Electrodes

Integrated - Carbon-Silicon

Single lead - 9 mm flat DIN gold

Fixation

Headset, direct contact, paste-free

Direct contact, conductive paste

Amplifier Power Supply

Rechargeable Li-poly (micro-USB)

Direct PC connection (USB)

Amplifier Current Absorption

60 mA

100 mA

Continuous Operation Time

5 h

8 h

Channels

5 (Fz, C3, Cz, C4, Pz)

21

Reference

1 (A1)

2 (A1 + A2)

Data Transmission

Bluetooth 2.1

USB

RF Frequency

2.4-2.48 GHz

N/A

RF Range

10 m

N/A

UART Baud Rate

115,200

460,800

Hardware Bandwidth

1-1 k Hz

0.16 - 70 Hz

Filter Type

Elliptical

IIR

Filter Order

Multiple

Multiple

Input Voltage Range

0.4 – 820 μV

1.5 - 5000 μV

Input Impedance

100 MΩ

Not < 200 MΩ

Electrode Impedance

~ 100 Ω

< 5 kΩ

Input Referred Noise

< 0.4 μVpp

< 1.5 μVpp

ADC Resolutions

12-bit

16-bit

Sampling rate

250/1280 sample/s

250/500 sample/s

Weight

344 g

0.9 kg