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GETTING STARTED 3 - 15
3.10 PRE-TRIGGER VIEW
One of the powerful features in the digital mode is the ability to capture and view
signal contents prior to the actual trigger. The amount of pretrigger information
can be as long as one full acquisition/record. The trigger position is adjusted with
the
TRIGGER POSITION
control.
Step 1 Turn the
TRIGGER POSITION
control counter clockwise. Now the
triggering edge shifts to the center of the screen. A trigger point marker
(s) indicates the trigger point. The part to the left of the marker is called
pretrigger view. The pretrigger view is indicated in the bottom of the
screen (in divisions)
Step 2 The
TRIGGER POSITION
control can also be used to adjust time
delay. Rotate the
TRIGGER POSITION
control clockwise until the
readout displays "0". When you continue to turn the TRIGGER
POSITION control clockwise, a positive delay between trigger point
and acquisition is set. The delay is no longer read out in divisions of
pretrigger information, but in seconds, or fractions of seconds to
indicate how much delay is used.
ST6686
1
TRIGGER
POSITION
1
DELAY=−5.00dV
PRE-TRIGGER
VIEW