The zoom function works on both X and Y direction. Place the left mouse cursor in the graph, hold the mouse key depressed and drag it until the desired area is surrounded by a frame. When releasing the mouse key, the designated area will be zoomed in. If you zoom in a graph, the X axis parts of all graphs located in the same view also get zoomed. A view can always have only one time base for all graphs contained. Only parts of the Y axis can be zoomed individually. In the scrolling display, zooming stretches the time base and enlarges the display. The signals, however, move faster, as the same geometrical length of the X axis now refers to a shorter time slice.

Zooming first applies to the X and Y direction. In the zoomed-in condition, the scale in the Y direction can be changed at any time without affecting the zoomed section of the X axis. Autoscaling in the Y direction applies to the values in the zoomed area (= visible). Zooming with the mouse keeping the <SHIFT> key pressed will only zoom the X axis.

Zooming out can be carried out in steps using the button or the key <F3>. Every click successively reverses all previous zoom steps.

Use the button or the key <F4> to reactivate the original, non-zoomed display.