LeCroy DDA 7 Zi series, Руководство оператора

Страница: 238 / 544

WavePro 7Zi
237
WP700Zi-OM-E-RevA
6. Touch the newly displayed Track math function trace label if you want to change any settings in the Track
dialog:
Trigger Types
The triggers available to you are defined as follows:
Edge
A simple trigger, Edge trigger is activated by basic waveform features or conditions such as positive or negative
slope, and holdoff.
Width
Width trigger allows you to define a positive- or negative-going pulse width bounded by a voltage level,
above or below which a trigger will occur. Or you can specify a pulse width and voltage range, within or outside of
which a trigger will occur.
Glitch
Glitch trigger is a simpler form of Width trigger. Use Glitch trigger when you want to define a fixed pulse-
width time or time range only. Glitch trigger makes no provision for voltage levels or ranges.
Interval
While Glitch trigger performs over the width of a pulse, Interval trigger performs over the width of an
interval — the signal duration (the 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.
Qualified
The Qualified (A-B) trigger allows arming of the trigger on Event A and triggering on Event B. If the arming
event is a Pattern that occurs once (Pattern) or that occurs and stays satisfied (PatState), the triggering event can
be an Edge, Width, Glitch, or Interval condition.