3152B User Manual
Publication No. 980935 Rev. A
Filter
The Filter operation is calculated using a moving average. This is
done by recalculating each point as an average of a number of
symmetrical points adjacent to each point. You can filter the entire
waveform, or you may chose to filter a segment of the waveform by
placing the anchors as boundaries on the left and right of the
segment.
Smooth
The Smooth operation lets you smooth out rough transitions in your
waveform. This is done mathematically by multiplying the waveform
by the nonlinear portion of a cubic curve.
The Smooth operation is done on segments of the waveform graph
that are bounded by anchors. Anchor operations are described later
in this chapter. Place the anchors to the left and right of the
waveform segment to be smoothed and select the Smooth
operation. The waveform will change its shape immediately to
follow the mathematical pattern of a cubic curve.
Note that small segments with fast transitions, when combined with
cubic functions, tend to generate even larger transitions. Therefore,
be sure to omit such sections of the waveform when you use the
Smooth operation.
Invert
The Invert operation lets you invert the entire waveform or a
selected segment of a waveform. The waveform is inverted about
the 0-point on the vertical axis.
Trim Left
The trim left command lets you trim waveforms to the left of the
anchor point. This command is grayed out if the left anchor was not
moved from its original left position. The waveform is trimmed and
the point at the left anchor becomes the first point of the waveform.
Trim Right
The trim right command lets you trim waveforms to the right of the
anchor point. This command is grayed out if the right anchor was
not moved from its original right position. The waveform is trimmed
and the point at the right anchor becomes the last point of the
waveform.
Unmark
The Unmark operation removes the anchors from the waveform
screen and resets anchor positions to point 0 and to the last
waveform point.
Undo
The Undo command undoes the last editing operation.
View Commands
The View menu includes operations that let you view various
sections of the waveform graph. View operations include: Zoom In,
Zoom Out, Hide/Show Toolbars, and Channel selection (for dual
channel units only). Descriptions of the view operations are given
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