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7.3 Pulse Width Trigger
Pulse width trigger can set the oscilloscope at specific width and generated the positive pulse or
negative pulse when meet the trigger condition. Pulse width trigger menu can set information source,
polarity of pulse width (positive and negative), condition, the upper /lower limit of time, trigger coupling,
trigger mode, etc. As shown in Figure 7-2.
Figure 7-2
(1) Condition
Select trigger condition:
“＞”
,
“＜”
,
“≤≥”
.
a.
＞：
It will be generated when the pulse width of the trigger signal is greater than the pulse width
setting, it can set the lower limit of pulse width.
b.
＜：
It will be generated when the pulse width of the trigger signal is smaller than the pulse width
setting, it can set the upper limit of pulse width.
c.
≤≥：
It will be generated when the pulse width of the trigger signal is in the setting scope, it can
set the lower limit of pulse width and the upper limit of pulse width.
(2) The upper /lower limit of time
Compare the setting pulse width value with the signal pulse width. The trigger will be generated when
the condition is met. The range can be set to 2 ns ~10 s.
Positive pulse width
Negative pulse width
Trigger level line
