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To set the scale, select the required scale value in the Scale sub-menu or click the Fit to window point, which is designed to set the scale allowing the full Map image to fit into the Map window. The selected scale is restored after Intellect Axxon PSIM software restart.
If an external map is selected the layer background (see Configuring the external map Map server), then the map scale is also selected using the Zoom item in the functional menu, however, the scale is set as a number from 1 to 19 (4 by default). The current value is displayed on the bottom line of the Zoom submenu.
You can also scale the external map using the mouse wheel while holding down the Ctrl key on the keyboard.