Zooming signal in & out: Select a part of the signal you want to zoom in and press the zoom-in
button on the toolbar () or choose a Zoom-in option from the context menu. You can repeat
this as many times you want and SIGVIEW will memorize your position in signal for every zoom
step you make. You can use the up & down arrow keys or and buttons in the toolbar
to move through your zoom history i.e. zoom in and out of the signal. Zooming signal to arbitrary length: It is often useful to zoom in a signal to a part with exact
length (in samples or values). Furthermore, for FFT-based calculation is often useful to choose a
length equal to a power of 2. It will have great effect on FFT computation speed and precision.
You can do both by pressing button on a toolbar or choosing Edit/Zoom to X
samples/values in the main menu. A dialog will appear with all possible power of 2 lengths that
your signal can be zoomed-into. Choose the wanted length end press OK. You can also use this
option to zoom-in to some arbitrary, non power-of-2 signal length. Simply enter the wanted length
in the corresponding edit-box.
Moving through signal: After you zoom in a part of the signal, you can use it to slide through the
whole signal by using left & right arrow keys. The speed depends on the step value, which
represents the percent of the visible part of the signal you move each times you press the arrow
key. You can see this value for the currently active signal on the status bar.
Step can be changed for the current window by choosing Play&navigate/Step change option in
the main menu or by pressing Alt+Up or Alt+Down keys while signal window has focus.