1-21
IM 253710-01E
Functions
1
Trigger Position «For procedures, see section 7.5.»
The trigger position is used to set which section of the sampled data in the acquisition
memory to display on the screen. When the trigger delay (described in the next section)
is set to 0 s, the trigger point and trigger position match. In this case, if you wish to
display the sampled data before the trigger point, you would move the trigger position
from the left end of the screen to the right and then perform data acquisition. For
example, if the trigger position is moved to the horizontal center of the screen (50%),
then the area to the left of the trigger position will be displaying data that existed before
the trigger point. The section before the trigger position is called the pre-trigger section
and the section after the trigger position is called the post-trigger section. If the
observation time (described earlier) is changed, the display range changes around the
trigger position.
Acquisition
memory
Displayed record
length
Trigger position
(Trigger point)
Displayed on the screen
Trigger point
Pre-trigger
Post-trigger
Pre-trigger
Post-trigger
Trigger Delay «For procedures, see section 7.6.»
The trigger position matches the trigger point when the trigger delay is set to 0 s. This
function allows you to display the waveform that is acquired the specified amount of time
after the trigger point (delay time).
Delay time
Trigger point
Trigger position
Trigger point
Trigger position
When the trigger delay is set to 0 s
When a trigger delay is set
1.4 Trigger
