Trigger - YOKOGAWA DL7440 User Manual

2.3

Trigger

Trigger Source, Trigger Slope, and Trigger Level
Trigger Source
Trigger Slope
Trigger Level
Trigger Type <For the setup procedure, see chapter 6>
Simple Trigger
2-8
A trigger is a cue used to display the waveform on the screen. The 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 refers to the signal that is used in checking the trigger condition.
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 the slope is used as one of
the trigger conditions, it is called a trigger slope. Edge refers to the point where the
trigger source slope passes the trigger level (or, when trigger hysteresis (see page 2-14)
is specified, the point where the slope passes the hysteresis 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 source
When set to rising (
is activated here (edge)
The trigger used on the DL7400 can be classified into two main types: simple trigger and
enhanced trigger .
This function activates a trigger on a single trigger source.
Edge Trigger <For the setup procedure, see sections 6.5 to 6.7>
When the slope of 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 DL7400.
In the case of commercial power, a trigger is activated only on the rising edge.
Trigger level
), the trigger
IM 701450-01E