Appendix B
Specifications
©
National Instruments Corporation
B-3
NI CVS-1450 Series User Manual
Optically Isolated Inputs and Outputs
Isolated (Current Sinking) Inputs
Number of channels ............................... 13
Input voltage range................................. 0 V to 30 V
Input ON voltage ............................ 3.5 V to 30 V
Input OFF voltage ........................... 0 V to 2 V
Turn-on current ...................................... 7.1 mA, typical
14 mA, maximum
Maximum pulse rate............................... 100 kHz
Minimum pulse detected ........................ 10
µ
s
Reverse polarity protection .................... Yes, –30 V
Isolated (Current Sourcing) Outputs
Number of channels ............................... 4
On-state voltage range ........................... 5 V to 30 V, maximum
Maximum on-state voltage
drop from Viso................................ 1.2 V at 100 mA
Output current
5 V isopower ................................... 50 mA, maximum
24 V isopower ................................. 100 mA, maximum
30 V isopower ................................. 100 mA, maximum
Maximum pulse rate............................... 10 kHz (maximum load
resistance 100 k
Ω
)
Minimum pulse generated...................... 100
µ
s
Reverse polarity protection .................... Yes
