Teledyne Lecroy WaveSurfer 3000, Руководство оператора, Страница: 41 / 97

Operator's Manual
Trigger Types
These are the trigger types available for selection. If the trigger is part of a subgroup (e.g., Smart), first choose the
subgroup from among the basic types to display all the trigger options.
Basic Triggers
Edge triggers upon a achieving a certain voltage level in the positive or negative slope of the wave.
Width triggers upon finding a positive- or negative-going pulse width when measured at the specified voltage level.
Pattern triggers on a logical combination of analog or digital inputs: C1-C x and D0-D15. You have a choice of four
Boolean operators (AND, NAND, OR, NOR) and can stipulate the high or low voltage logic level for each input
independently.
NOTE : Pattern trigger supports digital inputs when enabled by option. Only the AND Boolean operator is available when
combining analog and digital inputs.
TV triggers on standard (PAL, SECAM, NTSC, HDTV) or custom composite video signals.
Smart Triggers
Window triggers when a signal exits a window defined by voltage thresholds.
Interval triggers upon finding a specific interval, the time (period) between two consecutive edges of the same polarity:
positive to positive or negative to negative. Use the interval trigger to capture intervals that fall short of, or exceed, a
specified range.
Dropout triggers when a signal loss is detected. The trigger is generated at the end of the timeout period following the
last trigger source transition. It is used primarily in single-shot applications with a pre-trigger delay.
Runt triggers when a pulse crosses a first threshold, but fails to cross a second threshold before re-crossing the first.
Other defining conditions for this trigger are the edge (triggers on the slope opposite to that selected) and runt width.
SlewRate triggers when the rising or falling edge of a pulse crosses an upper and a lower level. The pulse edge must
cross the thresholds faster or slower than a selected period of time.
The Serial trigger will appear if you have installed serial data trigger options. Select this to begin the process of setting up
a trigger based on finding the desired serial data IDs, patterns or errors. Instructions for using all serial trigger options
are available from our website at teledynelecroy.com/serialdata.
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