A-4
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Appendix A
Specifications
Sourcing 4 mA ..................................3.9 V min
Low, V
OL
Sinking 12 mA ..................................0.7 V max
Sinking 4 mA ....................................0.5 V max
Compare mode..........................................Software-selectable: single or periodic
Compare action .........................................Software-selectable: set, toggle, or pulse
Max compare rate (periodic).....................5 MHz
Pulse width (programmable)
Min....................................................100 ns
Max ...................................................1.6 ms
Active state .......................................Software-selectable: high or low
Digital I/O
Inputs
Number of inputs
NI 9512 .............................................4
NI 9514 and NI 9516 ........................2
Input type ..................................................Software-selectable: sinking or sourcing
Digital input configured for sinking
Digital logic levels, OFF state
Input voltage .....................................
≤
5 V
Input current......................................
≤
250 µA
Digital logic levels, ON state
Input voltage .....................................11 to 30 V
Input current......................................
≥
2 mA
Digital input configured for sourcing
Digital logic levels, OFF state
Input voltage .....................................11 to 30 V
Input current......................................
≤
1 mA
Digital logic levels, ON state
Input voltage .....................................
≤
5 V
Input current......................................
≥
2 mA
Input impedance........................................30 k
Ω
± 5%
Min pulse width
1
.......................................50
μ
s
Outputs (NI 9512 only)
Number of outputs ....................................2
Output type ...............................................Software-selectable: sinking or sourcing
Voltage range ............................................ 0 to 30 V
1
Assumes the minimum filter setting. Refer to the
NI SoftMotion Module
book of the
LabVIEW Help
for
more information about filter options.
