National Instruments NI 9516 Operating Instructions And Specifications - page 27
NI 9516 Operating Instructions and Specifications
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© National Instruments
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27
Motion I/O
Encoder 0 and 1 Phase A/B and Encoder 0 Index inputs
Type............................................ RS-422 differential or
single-ended inputs
Digital logic levels, single-ended
Voltage ................................. -0.25 to 5.25 V
High, V
IH
.............................. 2.0 V min
Low, V
IL
............................... 0.8 V max
Digital logic levels, differential (Phase(+) - Phase(-))
Input high range ................... 300 mV to 5 V
Input low range .................... -300 mV to -5 V
Common-mode voltage
1
...... -7 to 12 V
Input current at 5 V .................... ±1 mA
Min pulse width
2
Differential........................... 100 ns
Single-ended ........................ 400 ns
1
Common-mode voltage is the average of Phase+ and Phase-.
2
Assumes the minimum filter setting. Refer to the
NI SoftMotion Module book of the
LabVIEW Help for more information about filter options.