Triggering on Waveforms
Triggering on Edges 5
47
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:
1Display the TRIGGER key labels.
2Open the Trigger Options menu.
3Open 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:
4Select Free Run, jump to Noise
reject Filter.
5Set Noise reject Filter to Off.
Observe that the key labels at the bottom of the screen
have adapted to allow further selection of specific edge
trigger settings: