DI-2108 Hardware Manual
Specifications
3
2. Specifications
Analog Inputs
Number of Channels:
8
Channel Configuration:
Differential
Voltage Measurement Range:
±10V Full Scale
Input impedance:
110k
Dc accuracy:
±5 mV at 16-bit resolution and 25°C, excluding common mode error
Absolute maximum input without damage: ±100 V dc or peak ac (normal mode + common mode)
Common mode range:
±20 V dc or peak ac
Common mode rejection ratio:
80 dB (dc - 60 Hz)
Channel-to-channel crosstalk rejection:
-80 dB
Digital Ports
Number of Ports:
7
Type:
MOSFET switch
Configuration:
Programmable as digital input or switch
Pull-up value:
4.7 k
Input high voltage threshold:
2.4V
Input low voltage threshold:
0.8V
Absolute maximum applied voltage (V): +25V
Reserved Digital Inputs
Port 1:
W
IN
D
AQ
remote events
Port 2:
W
IN
D
AQ
remote start/stop
Port 3:
Rate input
Port 4:
Count input
ADC Characteristics
Resolution:
12- to 16-bit
Above zero ADC counts: 2,047 to 32,767
Below zero ADC counts: 2,048 to 32,768
Max. sample throughput rate:
Standard: 220,000 Hz (160 kHz for analog chs, 20 kHz per digital ch)
Stand-alone: 20 kHz to 160 kHz (dependent on flash memory)
Min. sample throughput rate:
Standard: 20 Hz (2.2 samples per hour with WinDaq)
Stand-alone: 0.0017 Hz
Sample rate timing accuracy:
50 ppm
Digital Ports Programmed as Switch
Maximum drain voltage:
25V
Maximum sink current:
100 mA
