DI-2008 Hardware Manual
Specifications
4
Maximum common mode voltage: 120 Vrms
Minimum common mode rejection (330
unbalance):
>110 dB (DC to 60 Hz)
Channel-to-channel crosstalk rejection:
(R
source
≤ 330 Ω; Freq
source
≤ 60 Hz)
> 100 dB
Digital Ports
Number of ports: 7
Type: MOSFET switch
Configuration: Programmable as an input or switch
Pull-up value: 4.7 k
Isolation: None
Input high voltage threshold: 2.4 V minimum
Input low voltage threshold: 0.8 V maximum
Absolute maximum input without damage: ±30 V peak
Count/Rate
Digital port assignment: Count: Port 2 as input; Rate: Port 3 as input
Internal pull-up value: 4.7 k
Input high voltage threshold: 2.4V
Input low voltage threshold: 0.8V
Terminal count: 65,535
Maximum rate frequency: 50 kHz
Minimum rate frequency: 0.5 Hz
Maximum count frequency: 50 kHz
ADC Characteristics
Voltage measurement resolution: Range (±) Resolution Units
10 mV 0.305
V
25 mV 0.763
50 mV 1.53
100 mV 3.05
250 mV 7.63
500 mV 15.26
1 V 30.5
2.5 V 76.3
5 V 152.6
10 V 305
25 V 763
50 V 1.53 mV
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