Racal Instruments 3156B, Руководство пользователя

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3156B User Manual
WaveCAD 4-40 Racal Instrument © 2005
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 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 point 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 point becomes the last point of the
waveform.
Unmark
The unmark command removes the anchors from the waveform
screen and resets anchor positions to point 0 and the last waveform
point.
Undo
The Undo command undoes the last editing operation.
View Commands
The View commands have commands that let you view various
sections of the waveform area. The View commands include: Zoom In,
Zoom Out, Hide/Show Toolbars and Channel ½ waveforms.
Description of the view commands is given in the following.
Zoom In
The zoom in command operates between anchors. Anchors are
marked as left and right hand triangles. The default position of the
anchors is the start and the end of the waveform. To move an anchor
to a new location, click and hold on the triangle and drag the anchor to
left or right as required. If you move the left anchor to the right and the
right anchor to the left, the area between the anchor will zoom in as
you select this command.
Looking at the Waveform Map, as shown in Figure 4-20, you’ll see that
the white portion is the zoomed area. Click and hold on the white area
and move your cursor around and the waveform screen will be
updated accordingly.