Teledyne LeCroy LabMaster 9Zi-A - Manual (Page 137)

Getting Started Manual
922157-00 Rev A 129
Pattern (Logic)
Logic trigger enables triggering on a logical combination (pattern) of five
inputs: CH1, CH2, CH3, CH4, and AUX (sometimes referred to as EXT on
legacy oscilloscope models). You have a choice of four Boolean operators
(AND, NAND, OR, NOR), and you can stipulate the high or low voltage logic
level for each input independently.
Smart
These are a specific set of sophisticated trigger types. Smart trigger types
are used to set conditions on signals with rare features, like the glitches
and others as follows:
W
INDOW
A smart trigger occurs when a signal enters or exits a window defined by
adjustable thresholds.
I NTERVAL
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.