Omicron CMC 430 User Manual

3.10.3.4 Deglitching input signals
In order to suppress short spurious pulses, a deglitching algorithm can be configured. The deglitch
process results in an additional dead time and introduces a signal delay. In order to be detected as a
valid signal level, the level of an input signal must have a constant value at least during the deglitch
time. The figure below illustrates the deglitch function.
Input signal
Deglitched input signal
T
deglitch
T
deglitch
3.10.3.5 Debouncing input signals
For input signals with a bouncing characteristic, a debounce function can be configured. This means
that the first change of the input signal causes the debounced input signal to be changed and then be
kept on this signal value for the duration of the debounce time.
The debounce function is placed after the deglitch function described above. Both functions are
realized by the firmware of the CMC 430 and are calculated in real time.
The figure below illustrates the debounce function. On the right-hand side of the figure, the debounce
time is too short. As a result, the debounced signal rises to "high" once again, even while the input
signal is still bouncing and does not drop to low level until the expiry of another period T
debounce
.
Input signal
Debounced
input signal
T
debounce
T
debounce
T
debounce
CMC 430 User Manual
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OMICRON

Omicron CMC 430 Specifications

General

Brand	Omicron
Model	CMC 430
Category	Test Equipment
Language	English