Width trigger
A width trigger occurs when the instrument detects a pulse that is inside or outside some specified time range. The instrument
can trigger on positive or negative width pulses. Width triggers can also be qualified by the logical state of other channels.
Window trigger
NOTE. Window trigger is not available on MSO/DPO5000B Series instruments.
Use the Window trigger to trigger the instrument when the input signal rises above an upper threshold level or falls below a lower
threshold level.
After setting these levels, you can specify whether you want to trigger the instrument as the signal is entering or leaving the
threshold window. You can further qualify the trigger event in terms of time, or by the logical state of other channels.
Sequential triggering
In applications that involve two or more signals, you may be able to use sequential triggering to capture more complex events.
Sequential triggering uses the A (Main) trigger to arm the trigger system, and then uses the B (Delayed) trigger to trigger the
instrument if a specific condition is met.
You can choose one of two trigger conditions:
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Trigger After Time. After the A trigger arms the trigger system, the instrument triggers on the next B-trigger event that occurs
after the trigger delay time. You can set the trigger delay time with the keypad or the multipurpose knobs.
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Trigger on nth Event. After the A trigger arms the trigger system, the instrument triggers on the nth B event. You can set the
number of B events with the keypad or the multipurpose knobs.
NOTE. The traditional delayed trigger mode called "Runs After" is controlled by the Horizontal Delay feature. You can use
horizontal delay to delay acquisition from any trigger event, whether from the A (Main) trigger alone or from a sequential trigger
that uses both the A (Main) and B (Delayed) triggers. See Triggering with Horizontal Delay On for more information.
Keep in mind the following when using sequential triggers:
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In most cases, you will set separate trigger sources for the A (Main) and B (Delayed) triggers.
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Sequential triggering for Trigger after Time or Trigger on nth Event is available for all trigger types.
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The B trigger is can be any trigger type except Bus.
What do you want to do next?
Learn more about sequential triggering.
Learn about advanced triggers.
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Triggering with horizontal delay off
The next figure compares the sequential trigger choices A Only, Trig After Time, and Trig on nth Event when horizontal delay is
off. Each illustration shows where pretrigger and posttrigger data is acquired relative to the trigger event.
Oscilloscope reference
674 DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series
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