G-Tec g-USBamp - Page 22

g.tec medical engineering GmbH g.USBamp, USB Biosignal Amplifier: Instruction for use
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V2.16.09
Page 22
Analog signal processing time and digital inputs
sampling
frequency [Hz]
ASD
ADC
AI/DI*
[samples]
32
2
64
2
256
1
512
1
600
2
1200
2
2400
2
4800
2
9600
3
19200
4
38400
7
*) Analog Signal line Delay due to the Analog Digital Converter between Analog Input and Digital Input lines. Due to the
intrinsic filtering and down sampling of the ADC for analog channels, there is a delay between the analog biosignal input
and digital trigger input lines.
DRL and calibration output
Digital-analog Converter (DAC)
DAC resolution 12 Bit
Sampling frequency 600 Hz per channel
Number of DACs 2 (DRL, calibration)
Output voltage calibration  250 mV
Output voltage DRL  5 mV, for internal testing usage only
Digital inputs at SC
TTL input Sensitivity: 0 - 5 V
Digital inputs and outputs at DIGITAL I/O 1
Digital inputs 0, 1, 2, 3 Sensitivity: 0 - 5 V
Digital outputs 1 and 2 Sensitivity: 0 – 3.3 V
Digital inputs and outputs at DIGITAL I/O 2
Digital inputs 4, 5, 6, 7 Sensitivity: 0 - 5 V
Digital outputs 3 and 4 Sensitivity: 0 – 3.3 V
Digital inputs at SYNC IN
ADC sclock extern - Sensitivity: 0 - 5 V
ADC sclock extern + Sensitivity: 0 - 5 V