Moving through signal & zooming
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For advanced zooming and moving through a signal by using a mouse-wheel please see Using mouse wheel for zooming and moving through signal.

Zooming signal in & out: Select  a part of the signal you want to zoom in and press the zoom-in button on the toolbar (graphic) 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 graphic  and graphic  buttons in the toolbar to move through your zoom history i.e. zoom in and out of the signal.

Even a faster zoom method is to use your mouse wheel.

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 graphic  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.

Even faster method for moving through signal is to use your mouse wheel.


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.

Moving through signal and zooming