Display a Wavefo
rm
16. To stop acquisitions if a m atch is found,
select the Mode tab and check Stop
Acquisition i
f event found.
Quick Tips.
Search is performed only on acquired data. Set up the instrument to acquire the data you are searching for.
Set the sample rate so the search event is discernible. You can search for a glitch that is wider than a couple of
sample intervals.
You can copy trigger settings to search for other locations in your acquired waveform that meet the trigger conditions.
You can copy search settings to your trigger.
Edge search marks are created without zoom factors. Other search types create m arks with an appropriate zoom factor.
Pressing Bring Zoom to Mark Zoom 2 or Zoom 3 displays the corresponding zoom view with the same zoom parameters
as Zoom 1.
Custom (User) marks are saved with the waveform when the waveform is saved and when the setup is saved.
Automatic search marks are not saved with the waveform when the waveform is saved. However, you can easily
recapture them by reusing the search function.
Thesearchcriteriaaresavedinthesavedsetup.
Search includes the following search capabilities:
Search Description
Edge
Searches for edges (rising or falling) with a user-specified threshold level.
Glitch Searches for pulses narrower (or wider) than the specified width, or ignores glitches
narrower (or wider) than the specified width.
Pulse Width
Searches for positive or negative pulse widths that are >, <, = , or ≠ a user-spec ified pulse
width.
Setup & Hold Search for violations of user-specified setup and hold times.
Runt
Searches for positive or negative pulses that cross one amplitude threshold but fail to cross
a second threshold before crossing the first again. Search for all runt pulses or only those
withaduration>,<,=,or≠ a user-specified time.
Window
Searches for a signal that is entering or leaving the threshold w indow. Qualify the search
in terms of time by using the When Wider option, or by the logical state of other channels
using the When Logic option.
Pattern
Search for a logic pattern (A ND, O R, NA ND, or N OR) across m ultiple waveforms with each
input set to either High, Low, or Don’t Care. Search for when the event goes true, goes
false, or stays valid for >, <, =, or ≠ a user-spec ified time. Additionally, you must define one
of the inputs as a clock for synchronous (state) searches.
78 DPO7000 Series and DPO /DS A70000/B Series Quick Start User Manual
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