Fluke CombiScope PM3370B User Manual page 73

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TRIGGER
TRIGGER
- Press the ANALOG key to select the digital mode.
POSITION
- Turn the TRIGGER POSITION control counterclockwise.
One of the outstanding capabilities of a Digital Storage Oscilloscope is the ability
to capture and display signal details before the trigger moment.
When you turn the TRIGGER POSITION control counterclockwise, the trigger
point ( ) is shifted to the right. This allows you to look at the signal before the
trigger point. The pretrigger view is displayed in the bottom of the screen, and
calibrated in divisions. The trigger point is indicated on the screen with an arrow.
Pretrigger recording can be adjusted and is limited to one full screen, or -10
divisions.
- Turn the TRIGGER POSITION control clockwise.
When the control is rotated clockwise, delay is added. The trigger point shifts to
the left. The delay can be adjusted to a maximum of1000 divisions, so that it is
outside the screen. Positive trigger delay is indicated in seconds or in fractions of
seconds.
- Set the delay to 0 with TRIGGER POSITION
HOW TO USE THE INSTRUMENT
TRIGGER POSITION