National Instruments NI 9425 - Manual (Page 11)

© National Instruments Corp. 11 NI 9425 Operating Instructions and Specifications
Specifications
The following specifications are typical for the range –40 to 70 °C
unless otherwise noted. All voltages are relative to COM unless
otherwise noted.
Input Characteristics
Number of channels.......................... 32 digital input channels
Input type .......................................... Sinking
Digital logic levels
OFF state
Input voltage ........................≤5 V
Input current .........................≤150 μA
ON state
Input voltage ........................≥10 V
Input current .........................≥330 μA
Hysteresis
Input voltage ........................ 2 V min
Input current......................... 60
μA min
Input impedance................................ 30 k
Ω ± 5%