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