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
*)
A
nalog
S
ignal line
D
elay due to the
A
nalog
D
igital
C
onverter
between
A
nalog
I
nput and
D
igital
I
nput 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
Sensitivity:
0 - 5 V
