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: WINDAQ remote events
Port 2: W
INDAQ 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
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