UTD4000 Four-channel User Manual
52
4.
Data
sampled
before after triggering
The trigger position is typically set at the
horizontal center of the screen. In this case, you are
able to view 6 divisions of pretrigger and delay
information. Adjusting the horizontal displacement of
the waveform with the
knob allows you to
see more pretrig ger informa tion . By o bse rving
pretrigger data, you can see the waveform before
trigger occurs. For example, you can detect the glitch
that occurs when the circuitry starts. Observation and
analysis of trigger data can help you identify the
cause of glitch.
As shown below, [
] button in the control
zone is the function key for the sampling system.
Press the [
] key to pop out the sampling
setup menu. You can use this menu to adjust the
sampling mode.
:
/
.
Pretrigger/Delayed Trigger
ACQUIRE
ACQUIRE
POSITION
Setting the Sampling System
Figure 2-19 Function key for the sampling
