Fluke 199C/S FE 192,196,199 C Users Manual - Page 64

Triggering on Noisy Waveforms, Making a Single Acquisition, On Trigger, Noise, reject Filter

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Fluke 192B - 196B/C - 199B/C Users Manual Triggering on Noisy Waveforms To reduce jitter on the screen when triggering on noisy waveforms, you can use a noise rejection filter. Continue from step 3 of the previous example as follows: 4 Select On Trigger, jump to Noise reject Filter. 5 Set Noise reject Filter to On. Observe that the trigger gap has increased. This is indicated by a taller trigger icon . Making a Single Acquisition To catch single events, you can perform a single shot acquisition (one-time screen update). To set up the test tool for a single shot of the input A waveform, continue from step 3 again: 4 Select Single Shot. 5 Accept the settings. 56 The word WAITING appears at the top of the screen indicating that the test tool is waiting for a trigger. As soon as the test tool receives a trigger, the waveform is displayed and the instrument is set to hold. This is indicated by the word HOLD at top of the screen. The test tool will now have a screen like Figure 29. 6 Arm the test tool for a new single shot. Tip The test tool stores all single shots in the replay memory. Use the Replay function to look at all the stored single shots. Figure 29. Making a Single Shot Measurement

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Fluke 192B - 196B/C - 199B/C
Users Manual
56
Triggering on Noisy Waveforms
To reduce jitter on the screen when triggering on noisy
waveforms, you can use a noise rejection filter. Continue
from step 3 of the previous example as follows:
4
Select
On Trigger
, jump to
Noise
reject Filter
.
5
Set
Noise reject Filter
to
On
.
Observe that the trigger gap has increased. This is
indicated by a taller trigger icon
.
Making a Single Acquisition
To catch single events, you can perform a
single shot
acquisition (one-time screen update). To set up the test
tool for a single shot of the input A waveform, continue
from step 3 again:
4
Select
Single Shot
.
5
Accept the settings.
The word
WAITING
appears at the top of the screen
indicating that the test tool is waiting for a trigger. As soon
as the test tool receives a trigger, the waveform is
displayed and the instrument is set to hold. This is
indicated by the word
HOLD
at top of the screen.
The test tool will now have a screen like Figure 29.
6
Arm the test tool for a new single
shot.
Tip
The test tool stores all single shots in the replay
memory. Use the Replay function to look at all
the stored single shots.
Figure 29. Making a Single Shot Measurement