National Instruments NI 9514, Руководство пользователя

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© National Instruments | A-3
NI 951x User Manual
Min pulse width 1
Differential........................................ 100 ns
Single-ended ..................................... 400 ns
Max count rate
Differential........................................ 20 × 10 6 counts/sec
Single-ended ..................................... 5 × 10
6
counts/sec
Forward, reverse, and home inputs
Input type.................................................. Software-selectable: sinking or sourcing
Limit or home 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
Limit or home 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
Position capture input
Digital logic levels
Voltage .............................................. -0.25 to 5.25 V
High, V
IH
.......................................... 2.0 V min
Low, V
IL
............................................ 0.8 V max
Input current
(0 V
≤ V
in
≤ 4.5 V) ................................. ±2 mA max
Min pulse width
2
....................................... 100 ns
Max capture latency.................................. 200 ns
Capture accuracy ...................................... ±1 count
Active edge ............................................... Software-selectable: rising edge or falling edge
Position compare outputs
High, V
OH
................................................. 5.25 V max
Sourcing 12 mA................................ 3.7 V min
1 Assumes the minimum filter setting. Refer to the NI SoftMotion Module book of the LabVIEW Help for
more information about filter options.