LeCroy SDA, Operator'S Manual

Page: 79 / 397

SDA Operator’s Manual
Hold Off by Events
Select a positive or negative slope and a number of events. An event is the number of times the
trigger condition is met after the last trigger. A trigger is generated when the condition is met after
this number, counted from the last trigger. The count is restarted on each trigger. For example, if
the event number is two, the trigger will occur on the third event. From one to 1,000,000,000
events can be selected.
Edge Trigger with Holdoff by Events (in this example, two events). The bold edges on the trigger source indicate
that a positive slope has been selected. The broken, upward-pointing arrows indicate potential triggers, while the
bold ones show where triggers actually occur after the holdoff expires.
Simple Triggers
Edge Trigger on Simple Signals
The instrument uses many waveform capture techniques that trigger on features and conditions
that you define. These triggers fall into two major categories:
•
Edge activated by basic waveform features or conditions such as a positive or negative
slope, and hold-off
•
SMART Trigger® sophisticated triggers that enable you to use basic or complex conditions
for triggering.
Use Edge Triggers for simple signals, and the SMART Triggers for signals with rare features, like
glitches.
SDA-OM-E Rev H
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