QNAP Security VioStor NVR (Version: 3.5.1) - Manual (Page 51)

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PTZ Control Panel
The term ‘PTZ’ stands for ‘Pan/Tilt/Zoom’. If the IP camera supports PTZ, use the control
panel on the NVR to adjust the viewing angel of the IP camera. These functions are
available depending on the camera models. Please consult the camera's documentation
for details. Note that the digital zoom function will be disabled when the PTZ function is in
use.
Icon Description
Pan and tilt:
If the PTZ camera supports pan and tilt functions, click these
buttons to pan or tilt the camera.
Preset positions:
Select the preset positions of the PTZ camera.
Zoom in/Zoom out:
If the PTZ camera supports zooming, click these buttons to
zoom in or zoom out.
Digital zoom:
Select a channel and click this button to enable the digital zoom
function. When enabled, click ‘+’ to zoom in or ‘-’ to zoom out.
Focus control:
Adjust the focus control of the PTZ camera.