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PicoScope 6 User Guide
57
Copyright 2006 Pico Technology Limited. All rights reserved.PSW044-2.0
7.10
Triggering toolbar
The Triggering toolbar tells the scope device in the selected capture window when to
start capturing data.
Trigger Mode.
None: PicoScope acquires waveforms repeatedly without waiting for
specific events.
Auto: PicoScope tries to wait for a trigger event before displaying
data. If there is no trigger event within a specified time, it displays
data anyway. It repeats this process until you click the Stop button
. "Auto" mode does not set up the trigger level automatically; you
still need to do this yourself.
Repeat: PicoScope waits for a trigger event before displaying data;
but if there is no trigger event, it displays nothing. It repeats this
process until you click the Stop button .
Single: PicoScope waits once for a trigger event, then stops
sampling. To repeat a single trigger, click the Start button .
Trigger Source. This is the channel that PicoScope monitors for
the trigger condition.
Rising Edge. Click to trigger on the rising edge of the waveform.
Falling Edge. Click to trigger on the falling edge of the waveform.
Trigger Level. Sets the trigger level. You can also set the trigger
level by dragging the trigger marker up or down on the screen.
Pre-trigger Time (0% to 100%). This parameter controls how
much of the waveform appears before the trigger point. It defaults
to 50%, which puts the trigger marker is in the middle of the
screen. You can also control this parameter by dragging the trigger
marker to the left or right.
Post-trigger Delay. Click this button to toggle the Post-trigger
Delay control (see next item).
Post-trigger Delay. The post-trigger delay is the time that
PicoScope waits after the trigger point before sampling. You can also
modify this parameter by dragging the trigger marker while the
Post-trigger Delay button is enabled. As you drag the marker,
you will see the post-trigger arrow displayed briefly. For this
control to have an effect, you must first make sure that the Post-
trigger Delay button is enabled.
Technical Note
See the reference topic "Trigger Timing " for information on how the Pre-trigger
Time and Post-trigger Delay controls interact.
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