Viola M4BL User Manual - Astra Security Systems Ltd

• ENTER (Mouse: )Press this button to display OSD display dialog. The user may enable/disableOSD display for certain fields in main screen. Press ENTER to save & exit, orESC to cancel.4.4 Digital ZoomThe system supports X2/X4 Digital Zoom function. To use this function, press X2button (Mouse: ) in full screen display to enter Digital Zoom mode. There willbe a zoom window shown in the video window as shown. The zoom window (a)will always be shown at zoom factor X1, (b) can be shown or hidden at zoom factorX2, and (c) will never be shown at zoom factor X4. The operations in Digital Zoommode are as below:• ▲▼◄► (Mouse: Click in the video window)Press these buttons to(a) move the zoom window if it’s shown in the video window, or(b) navigate the video window around if the zoom factor is X2 or X4.• ENTER (Mouse: Click in the video window)Press this button to zoom in the zoom window, from X1 to X2 or from X2 to X4,if the zoom window is shown in the video window.- 19 -