The Toggle Box Zoom button
switches between Box Zoom mode and normal interaction mode. In Box
Zoom mode, you can define an area of the chart to zoom in on for
To use Box Zoom:
Select the pen to zoom in
Click ToggleBox Zoom on the navigation
The cursor changes to a cross.
Click and drag the bounding box
to enclose the part of the data you want to zoom in on, as shown
Release the mouse button. The
display changes to a close-up of the selected data.
To exit Zoom mode, click the
Toggle Box Zoom button.
Depending on whether the pens are locked or
unlocked, the Toggle Box Zoom commands works differently:
For locked pens, the zoom is
applied to pens in the horizontal date/time axes. If an analog pen
is being zoomed, the zoom is applied to the vertical (value) axis
of non-autoscaled analog pens in the pane in which the zoom box was
For unlocked pens, the zoom is
applied only to the selected pen in both the date/time and vertical
(value) axes. The value axis is only affected if autoscale is
Note: Vertical zoom is only applied to
analog pens, since it has no effect with alarm or digital pens.