Fluke ScopeMeter 190-502 User Manual page 70

Fluke 190 series II
Users Manual
Triggering on Noisy Waveforms
To reduce jitter on the screen when triggering on noisy
waveforms, you can use a trigger filter. Continue from step
3 of the previous example as follows:
4 Select On Trigger, jump to Trigger
Filter.
ENTER
5 Set Noise Reject or HF Reject to
On. This is indicated by a taller
ENTER
trigger icon
When Noise Reject is on, an increased trigger gap will be
applied.
When HF Reject is on, HF noise on the (internal) trigger
signal will be suppressed.
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 (page 61) again:
4 Select Single Shot.
ENTER
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The word appears at the top of the screen
MANUAL
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
The test tool will now have a screen like Figure 30.
5
HOLD
RUN
The test tool stores all single shots in the replay
memory. Use the Replay function to look at all
the stored single shots (see Chapter 3).
Figure 30. Making a Single Shot Measurement
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at top of the screen.
HOLD
Arm the test tool for a new single
shot.
Tip