Measurement Computing LGR-5320 Series - Manual (Page 27)

LGR-5320 Series User's Guide Functional Details
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subsequent glitches within the group if the debounce time is set accordingly. Set the debounce time to
encompass one entire group of glitches, as shown in Figure 24.
Figure 24. Optimal debounce time for trigger before stable mode
Trigger after stable mode behaves more like a traditional debounce function: rejecting glitches and only passing
state transitions after a required period of stability. Use Trigger after stable with electromechanical devices like
encoders and mechanical switches to reject switch bounce and disturbances due to a vibrating encoder that is
not otherwise moving. The debounce time should be set short enough to accept the desired input pulse, but
longer than the period of the undesired disturbance, as shown in Figure 25.
Figure 25. Optimal debounce time for trigger after stable mode