Starting from SIGVIEW v2.0, you can use a mouse-wheel for faster zooming in/out and moving
If you simply position signal ruler somewhere in a signal and turn your mouse-wheel forward
(away from you), the signal will be zoomed-in to a 20% of its original length. The ruler will remain
on the same signal position. Zooming-out can be performed by turning a mouse-wheel in the
opposite direction. Please note that these zoom steps will not be saved in a zoom history.
There are also two keyboard modifiers which can be used to achieve a special zooming and
moving functions in combination with mouse wheel:
Ctrl key + mouse wheel: Instead of zooming, you will move through the signal by turning mouse
wheel. Turning forward will be equal to pressing the left arrow key and turning backwards will be
equal to pressing the right arrow key.
Alt key + mouse wheel: Zooming in/out will be performed as described above, but the length of
a signal segment in samples will always be a power of 2 (i.e. 1024, 2048,4096,...) for each step. It
is especially useful for zooming in a signals where FFT function will be performed afterwards.
To use a mouse wheel to control Y-axis, move your mouse to the area between the left edge of
the signal window and Y-axis display. The mouse pointer will change to show a symbol as on this
Turning a mouse-wheel forward will zoom-in the Y-Axis around the current position of the small
arrow in the cursor pointer. Turning the mouse-wheel in the opposite direction will zoom-out the
Y-Axis. Again, the center position for this operation will be position of the small arrow in the
Ctrl key + mouse wheel: Instead of zooming, you will move the complete Y-Axis up or down.