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Manual ibaPQU-S
20
Issue 1.3
7.5.2 Debounce filter
There are four debounce filters for each digital input. They can be chosen and configured
independently of each other for each signal. The following filters are available:

“Off” (no filter)

“Stretch rising edge”

“Stretch falling edge”

“Stretch both edges”

“Delay both edges”
For each filter, a debounce time ranging between [1µs…65535µs] has to be defined in
µs.
“Off”
The measured input signal is forwarded directly without filtering.
“Stretch rising edge”
The first rising edge sets the output signal (red) to logical 1 and it remains logical 1 for
the set debounce time. Subsequently, the channel is transparent again and waits for the
next rising edge.
Figure 5:
Debounce filter: “Stretch rising edge”
“Stretch falling edge”
The first falling edge sets the output signal (green) to logical 0 and it remains logical 0
for the set debounce time. Subsequently, the channel is transparent again and waits for
the next falling edge.
Figure 6:
Debounce filter: “Stretch falling edge”