LeCroy WaveRunner Xi series Operator's Manual page 58

W R X S
AVE UNNER I
State The State trigger is a level-qualified trigger which requires that the qualifying signal remain above or
below a specified voltage level for a trigger to occur. For Sate trigger, you specify the time or number
of events after the signal has gone above or below the voltage level when you want the trigger to
occur.
Dropout Used primarily in single-shot applications, and usually with a pre-trigger delay, Dropout trigger can
detect lost signals. The trigger is generated at the end of the timeout period following the last trigger
source transition. You can select a timeout period from 2 ns to 20 s.
Logic Logic trigger enables triggering on a logical combination (pattern) of five inputs: CH1, CH2, CH3,
CH4, EXT. 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.
TV TV triggers provide stable triggering on standard or custom composite video signals. Use them on
PAL, SECAM, or NTSC systems. Optional HDTV trigger supports 1080i, 1080p, and 720p formats.
Serial Serial trigger allows a serial trigger condition to be set from within the oscilloscope, using an easy-to-
Trigger
understand interface.
and
Decode
Slew Rate Slew Rate trigger activates a trigger when the rising or falling edge of a pulse crosses two threshold
levels: an upper level and a lower level. The pulse edge must cross the thresholds faster or slower
than a selected period of time. You can select both thresholds within a range of 2 ns to 20 s.
Runt
The runt trigger is programmed to occur when a pulse crosses a first threshold line and fails to cross
a second threshold line before recrossing the first. You can select both voltage thresholds within a
time range of 100 ps to 20 s. Other defining conditions for this trigger are the edge (triggers on the
slope opposite to that selected) and runt width.
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