User`s manual

DVR User’s Manual
59
Iris +/−
This item is used to open and close the iris to let more or less light into the
camera. Click on <Iris +> to open iris or <Iris −> to close iris.
Zoom +/−
Users are allowed to zoom-in or zoom-out by using the adjusting buttons.
Zoom-in to enlarge a certain area and zoom-out to view more area.
Direction Button
This button is used to pan and/or tilt the dome camera. Click the arrows in the
directions to be viewed.
5.3.1.3 Digital Zoom of Camera Display
Users can view the camera zoom-in images via the digital zoom function.
Zoom in/out can be easily controlled via the mouse scroll wheel.
Scroll up the mouse wheel to zoom in and down to zoom out. On the
upper-left corner will show zoom-in magnification. The maximum
magnification is X7. Also, on the lower-right corner will display the position of
the current viewing area (shown as an inner white rectangle) comparing with
the original screen (shown as an outer rectangle frame).
In addition, the viewing area can be changed by left clicking and dragging the
mouse.
NOTE: This function will use up a lot of CPU resources. It is
recommended not to open too many programs at the same time to
avoid CPU crash.