8–6
Triggers and When to Use Them
Hold-off by Time This is the selection of a minimum time for triggers (Fig. 8–
3). A trigger is generated when the trigger condition is met
after the selected delay from the last trigger. The timing for
the delay is initialized and started on each trigger. The hold-
off timeout should exceed the duration of the signal
displayed on screen. For instance, at a timebase setting of 1
ms/div, the time-out hold-off should at least exceed 10 ms.
Figure 8–3. Edge Trigger with Hold-off by Time.
Hold-off time Hold-off time
Trigger Source: Positive Slope
Trigger can occur
Generated Trigger
Trigger
Event
Trigger
Event
Trigger
Event
Trigger initiates
hold-off timer
Trigger initiates
hold-off timer