Interval Trigger - LeCroy WaveRunner Xi series Operator's Manual

W R X S
AVE UNNER I
G T S
LITCH RIGGER ETUP
1. Touch the Trigger descriptor label.
2. If applicable, touch the Smart trigger button, then the Glitch trigger button.
3. Touch inside the trigger Source field and select a source on which to trigger.
4. Touch inside the Level data entry field and enter a value using the pop-up keypad.
5. Select Positive or Negative polarity.
Define the width of the glitch you are looking for. You can trigger on any glitch less than a chosen pulse-width
(Upper Limit); or you can trigger on a chosen range. When you touch the Less Than button; the Upper Limit
data entry field alone is displayed. When you touch the In Range button; the Upper Limit and Lower Limit
fields are displayed.
6. Touch inside the limit fields and enter a time value, using the pop-up keypad.

Interval Trigger

H I T
OW NTERVAL RIGGERS
While Glitch trigger performs over the width of a pulse, Interval trigger performs over the width of an interval, with
the signal duration (period) separating two consecutive edges of the same polarity: positive to positive or negative
to negative. Use Interval trigger to capture intervals that fall short of, or exceed, a given time limit. In addition, you
can define a width range to capture any interval that is itself inside or outside the specified range: an exclusion
trigger by interval.
•
Interval Less Than: For this Interval Trigger, generated on a time interval smaller than the one that you set,
choose a maximum interval between two like edges of the same slope (positive, for example).
The trigger is generated on the second (positive) edge if it occurs within the set interval. The instrument
initializes and restarts the timing for the interval whenever the selected edge occurs.
Interval Trigger that triggers when the interval width is smaller than the selected interval. The broken, upward-pointing arrow
indicates a potential trigger, while the bold one shows where the actual trigger occurs on the positive edge within the selected
interval.
•
Interval Greater Than: For this Interval Trigger, generated on an interval larger than the one that you set,
select a minimum interval between two edges of the same slope. The instrument generates the trigger on the
second edge if it occurs after the set interval. The timing for the interval is initialized and restarted whenever
the selected edge occurs.
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