HBM GEN3i, Руководство пользователя

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∆t
∆t: Must be > 50 ns
∆t ∆t ∆t
Signal
Direction
Single precision counting
Count Up Count Up Count Up Count Down Count Down Count Down
Signal
Direction
Double precision counting
Count Up Count Up Count Up Count Down Count Down Count Down
Count Up Count Up Count Down Count Down
Signal
Direction
Quad precision counting
Count Up Count Up Count Up Count Down Count Down Count Down
Wheel rotates clock wise Wheel rotates counter clock wise
Wheel rotates clock wise Wheel rotates counter clock wise
Wheel rotates clock wise Wheel rotates counter clock wise
Signal
Quadrature disk
Signal
Direction
Direction
Figure 12.74: Signal coupling/precision modes
l
In single precision , the counter only increments/decrements on
the rising edge of the signal input. This is the default traditional
quadrature count mode.
l
In double precision , the counter increments/decrements on both
the rising and falling edge of the signal input. As a result, smaller
rotations can already be detected. For every full rotation the
counter counts double the values compared to the single precision
signal coupling mode.
l
In quad precision , the counter increments/decrements on every
rising and falling edge of both the signal and direction input. As a
result, even smaller rotations can already be detected. For every
full rotation the counter counts quadruple values compared to the
single precision signal coupling mode.
Unless other requirements do not allow the quad precision mode to be
selected, using this mode is strongly advised due to it higher accuracy.
GEN3i
304 I3763-3.1 en HBM: public