Fluke 199C/S FE 192,196,199 C Users Manual - Page 69

Triggering on Pulses, Detecting Narrow Pulses

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Triggering on Pulses Use pulse width triggering to isolate and display specific pulses that you can qualify by time, such as glitches, missing pulses, bursts or signal dropouts. Detecting Narrow Pulses To set the test tool to trigger on narrow positive pulses shorter than 5 ms, do the following: 1 Apply a video signal to the red input A. 2 Display the TRIGGER key labels. 3 Open the Trigger Options menu. 5 Triggering on Waveforms Triggering on Pulses 4 Select Pulse Width on A... to open the Trigger on Pulse Width menu. 5 Select the positive pulse icon, then jump to Condition. 6 Select

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Triggering on Waveforms
Triggering on Pulses
5
61
Triggering on Pulses
Use pulse width triggering to isolate and display specific
pulses that you can qualify by time, such as glitches,
missing pulses, bursts or signal dropouts.
Detecting Narrow Pulses
To set the test tool to trigger on narrow positive pulses
shorter than 5 ms, do the following:
1
Apply a video signal to the red input A.
2
Display the
TRIGGER
key labels.
3
Open the
Trigger Options
menu.
4
Select
Pulse Width on A...
to
open the
Trigger on Pulse Width
menu.
5
Select the positive pulse icon,
then jump to
Condition
.
6
Select
<t
, then jump to
Update
.
7
Select
On Trigger
.
The test tool is now prepared to trigger on narrow pulses
only. Observe that the trigger key labels at the bottom of
the screen have been adapted to set the pulse conditions: