Getting Started with the NI CVS-1450 Series
12
ni.com
TTL Inputs
Number of channels ...............................................2
Maximum pulse rate ..............................................2 MHz
Minimum pulse detected........................................500 ns
Power-on state........................................................Input (high-impedance)
61.9 k
Ω
pull-up to 5 V
TTL Outputs
Number of channels ...............................................10
Output voltage range..............................................0 to 5 V
Maximum pulse rate ..............................................2 MHz
Optically Isolated Inputs and Outputs
Isolated (Current Sinking) Inputs
Number of channels ...............................................13
Input voltage range ................................................0 to 30 V
Input ON voltage............................................3.5 to 30 V
Input OFF voltage ..........................................0 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 to 30 V, maximum
Maximum on-state voltage
drop from V
iso
................................................1.2 V at 100 mA
Output current
5 V
iso
..............................................................50 mA, maximum
24 V
iso
............................................................100 mA, maximum
30 V
iso
............................................................100 mA, maximum
Maximum pulse rate ..............................................10 kHz (maximum load resistance 100 k
Ω
)
Minimum pulse generated .....................................100
μ
s
Reverse polarity protection ....................................Yes