Fluke 199C/S FE 192,196,199 C Users Manual - Page 63

Triggering on Edges, Trigger Options, Free Run, On Trigger, Single Shot, Noise, reject Filter

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Triggering on Edges If the signal is instable or has a very low frequency, use edge triggering to obtain full manual trigger control. To trigger on rising edges of the input A waveform, do the following: 1 Display the TRIGGER key labels. 2 Open the Trigger Options menu. 3 Open the Trigger on Edge menu. When Free Run is selected, the test tool updates the screen even if there are no triggers. A trace always appears on the screen. 5 Triggering on Waveforms Triggering on Edges When On Trigger is selected, the test tool needs a trigger to display a waveform. Use this mode if you want to update the screen only when valid triggers occur. When Single Shot is selected, the test tool waits for a trigger. After receiving a trigger, the waveform is displayed and the instruments is set to HOLD. In most cases it is advised to use the Free Run mode: 4 Select Free Run, jump to Noise reject Filter. 5 Set Noise reject Filter to Off. 6 Set NCycle to Off (C versions) Observe that the key labels at the bottom of the screen have adapted to allow further selection of specific edge trigger settings: 55

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Triggering on Waveforms
Triggering on Edges
5
55
Triggering on Edges
If the signal is instable or has a very low frequency, use
edge triggering to obtain full manual trigger control.
To trigger on rising edges of the input A waveform, do the
following:
1
Display the
TRIGGER
key labels.
2
Open the
Trigger Options
menu.
3
Open the
Trigger on Edge
menu.
When
Free Run
is selected, the test tool updates the
screen even if there are no triggers. A trace always
appears on the screen.
When
On Trigger
is selected, the test tool needs a trigger
to display a waveform. Use this mode if you want to
update the screen
only
when valid triggers occur.
When
Single Shot
is selected, the test tool waits for a
trigger. After receiving a trigger, the waveform is displayed
and the instruments is set to HOLD.
In most cases it is advised to use the Free Run mode:
4
Select
Free Run
, jump to
Noise
reject Filter
.
5
Set
Noise reject Filter
to
Off
.
6
Set
NCycle
to
Off
(C versions)
Observe that the key labels at the bottom of the screen
have adapted to allow further selection of specific edge
trigger settings: