GVD M3 series, User Manual

Page: 89 / 197

Chapter 4
System Operation
HD NVR User Manual 4-41
Zoom in/out
The zooming function controls the lens focus of the PTZ camera. When the zoom in
function is running, the image is enlarged and closer; when the zoom out function is
running, the image is shrunk and farther. The ratio of the enlarged picture or shrunk
picture depends on the lens of the PTZ camera. To manipulate the zoom in/out
function of the PTZ camera, see the following ste ps:
Figure 4-28 The zoom in/out function of the PTZ camera
1.
Refer to section 4-6 ‘ Time Slider ’ to show the Time Slider and click the icon of
the PTZ mode.
2. If the selected viewer is not the active viewer, set the viewer active.
3.
Move the mouse to the viewer. Roll down the wheel of the mouse to zoom in the
image. (Or roll up the wheel of the mouse to zoom out the image.) Keep rolling
down/up until the image has reached the best ratio.
4. To enlarge the image maximally, keep rolling down the wheel of the mouse until
the image stops enlarging, and vice versa.