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IM 701310-01E
Explanation of Functions
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Index
2.4 Triggers
A trigger is a cue used to display the waveform on the screen. A trigger is activated when
the specified trigger condition is met. At this point, the waveform is ready to be displayed
on the screen.
Trigger Source, Trigger Slope, and Trigger Level
Trigger source
Trigger source refers to the signal that is used in checking the trigger condition.
Trigger slope
Trigger slope refers to the movement of the signal from a low level to a high level (rising
edge) or from a high level to a low level (falling edge). When a slope is used as one of
the trigger conditions, it is called a trigger slope.
Edge
The term “edge” is used to refer to the point at which the trigger source slope passes the
trigger level (or if trigger hysteresis is set, the point at which it has passed the level by
the hysteresis amount).
Trigger level
Trigger level refers to the level at which a trigger is activated when the trigger source
passes the certain level.
With simple triggers such as the edge trigger described later, a trigger is activated when
the level of the trigger source passes through the specified trigger level.
Trigger level
When set to rising ( ),
the trigger is activated here (edge)
Trigger source
Trigger Type ►For the procedure, see sections 6.6 to 6.20
The DL9000 provides three basic trigger types: “Edge/State,” “Width,” and “Enhanced.”
Then by setting “Event Interval,” a trigger can be applied that is dependent on the period
of a recurring trigger condition, or the time interval between two triggers.
Edge/State trigger
There are four types of Edge/State trigger, as follows.
•
Edge
When the trigger source passes through the specified trigger level on a rising or falling
edge, a trigger is activated. You can select the trigger source from input signals, the
external trigger signal, and the commercial power supplied to the DL9000. In the case
of commercial power, a trigger is activated only on the rising edge.
