Musical Instrument User Manual

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

TRIGGER

POSITION

DELAY=−5.00dV

PRE-TRIGGER

VIEW