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User Manual PXA125
Autoline
The Autoline command lets you draw straight-line segments. To draw
a line using this command click the left mouse button at the start
point. Click again at the next point and then click on the right mouse
button to terminate this operation.
Sketch
The Sketch command lets you draw free-hand segments. To draw a
line using this command click and hold the left mouse button at the
start point. Release the mouse button when you want to stop and
then click on the right mouse button to terminate this operation.
Smooth
The Smooth command lets you smooth out rough transitions on your
waveform. This is done mathematically by multiplying waveform
coordinates by the non-linear portion of a cubic parabola.
The Smooth operation is done on segments of the waveform that are
bound by anchors. Anchor operation is described later in this chapter.
Place you anchors on the left and right of your waveform segment
and select the Smoot command. The waveform will change its shape
immediately to follow the mathematical pattern of a parabolic curve.
Note that small segments with fast transitions, when combined with
parabolic expressions have tendencies to generate even larger
transitions. Therefore, make sure you omit such sections of the
waveform when you use this operation.
Filter
The Filter used with this command is moving average. This is done by
recalculating each point as an average of symmetrical number of
adjacent points. When you select the Filter command, a dialog box
pops up, letting you program the filter spacing in number of adjacent
points. 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.
Invert
The Invert command lets you invert the entire waveforms, or marked
segments of waveforms. The waveform is inverted about the 0-point
axis.
Trim Left
The Trim Left command operates in conjunction with the left anchor. It
is helpful if you want to "chop off " the left section of your waveform.
After you use this command, the portion to the left of the anchor will
be removed from the screen and the waveform will start from the point
where the anchor was placed before the trim left operation. When
using this command, bear in mind that the number of points that you
ArbConnection 3-77
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