g.tec medical engineering GmbH
g.USBamp, USB Biosignal Amplifier: Instruction for use
____________________________________________________________________________________________________________________
V2.16.09
Page 10
4
Explanation of switches, connectors and LEDs
Sockets, connectors and LED on the front side
g.USBamp has 4 mono-polar amplification groups with separated ground and reference potentials:
Group A:
Safety sockets 1 - 4: 4 analog input channels for EEG
Push-pull connector A is connected to safety sockets 1 - 4
Group B:
Safety sockets 5 - 8: 4 analog input channels for EEG
Push-pull connector B is connected to safety sockets 5 - 8
Group C:
Safety sockets 9 - 12: 4 analog input channels for EEG
Push-pull connector C is connected to safety sockets 9 - 12
Group D:
Safety sockets 13 - 16: 4 analog input channels for EEG
Push-pull connector D is connected to safety sockets 13 - 16
Each group has its own reference socket R and ground socket G. The 4 ground sockets and reference
sockets can be connected. The calibration signals are also available on the push-pull connector on
group D. The DRL socket is for internal testing usage only.
The green LED on the left side (ON) indicates power on.
The electrostatic discharge warning symbol: electrostatic discharge impulses must
be avoided when connecting .electrodes to any of the safety sockets or push pull
connectors
. Follow the steps in chapter “Save operation of g.USBamp” to avoid
electrostatic discharge impulses.
g.USBamp front side sockets, connectors and LED