Trigger Functions
Detect narrow p
ulses. To set the instrument to trigger o n narrow positive pulses
shorter than 5 ms, do the following:
1. Press the Trig
ger button.
2. Select TRIGGER OPTIONS.
3. Select Pulse Width on and press the Enter button.
4. Select the positive pulse icon (
).
5. Select the =t (±10%) condition.
6. Select On Trigger for update. The instrument is now prepared to trigger on
narrow pulses only. A new menu will appear from which you can further
define settings.
In this screen, the pulse width was set to 4.80 μs. All positive p ulses equal to
4.80 μs are displayed. (See Figure 36.)
Fi
gure 36: Pulse width triggering
NOTE. The instrument stores all triggered screens in the replay memory. For
example, if you set up your triggering for glitches, you can capture 100 glitches
with time stamps. Read more in the Replay section. (See page 52, Use Replay.)
70 THS3000 Series Oscilloscopes User Manual
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