User Manual

266
────────────────────────────────────────────────────
10.5 Pre-trigger
────────────────────────────────────────────────────
Screen: TRIGGER, DISPLAY
Call up the TRIGGER or DISPLAY screen
.
Move the flashing cursor to the pre-trigger
item, as shown in the figure on the left.
Use the JOG control or the function keys
to make the selection.
：Move the cursor up in the selection
window.
Selection
Selection
Method
Method
：Move the cursor down in the
selection window.
・The selection window is not displayed.
・The pre-trigger cannot be set to "-95%" at a
recording length of 160,000 DIV. In addition, if the
recording length is set to 160,000 DIV after the pre-
trigger is set to "-95%," the pre-trigger is
automatically reset to "0%." (MEM)
5%
95%
50%
50%
95%
Trigger point
［95%］:
95% before and 5% after the trigger
［50%］:
50% before and 50% after the trigger
［5%］:
5% before and 95% after the trigger
［-95%］:
R
ecording is about one recording length
after the trigger
recording range (recording length)
1
0.5 Pre-trigger
The pre-trigger function serves to record the waveform not only after but also
before triggering has occurred.
MEM, REC&MEM, FFT Function
Using the recording start point as 0% and the recording end point as 100%,
the trigger point can be specified in percent.
When all trigger sources are set to OFF, pre-trigger cannot be set.