QNAP Security VioStor NVR (Version: 3.3.2) - Manual (Page 51)

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PTZ Control Panel
The term ‘PTZ’ stands for ‘Pan/Tilt/Zoom’. If your IP camera supports PTZ, you can 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.
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 position of the PTZ camera.
Zoom in/Zoom out:
If your 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, you can click ‘+’ to zoom in or ‘-’ to
zoom out.
Focus control:
Adjust the focus control of the PTZ camera.