GE Security Legend IP, User Manual

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Legend IP
User Manual
54
Page2 tab
To access the Page2 page of Settings , select Camera , Settings , and Page2 .
Figure 40. Page2 page
Note: Remember to select OK to save any changes you make on the page.
Phase lock enabled. Phase lock enabled is a camera feature that allows synchronization of the video
signal to reduce picture roll on analog video switchers.
By default, the phase lock is off. As such, each camera synchronizes its video signal to its own internal
clock crystal. This is called internal synchronization. If you enable phase lock (select On), you are
selecting what is called line lock synchronization and the camera will synchronize its video signal to
the AC input voltage. With line lock synchronization, you also adjust the vertical phase shift of a
camera’s video signal to coordinate with other cameras. Due to differences in cameras, environments,
and cable lengths, the phase shift will not be the same for all cameras being synchronized. Use an
oscilloscope or a GE Security vertical phase adjustment tool (KTS-56). Contact your GE Security
sales representative.
Phase adjustment. The Phase adjustment feature is available only if On is selected for
Phase lock enabled . Choices range from 0 to 127°. Default is 50°. These settings map to the angle
adjustment range of 0 to 360°. Use your oscilloscope or vertical phase adjustment tool to verify
settings.
Stabilization. Stabilization is an optional camera feature that reduces video shaking for cameras that are
located in areas prone to vibration. It works best for low frequency vibration (3 to 10 Hz). If it is
available for your camera, it creates a slight lag and movement backward when a pan/tilt movement
stops. Choices are Off and On.
Digital zoom limit. Digital zoom limit is an electronic camera feature that increases the apparent size of
images beyond the magnification of the camera’s optical lens. Because image information is not also
increased, there is some loss of image resolution. So test the different settings for suitability. Selecting
a digital zoom setting that is too high can result in the loss of video clarity for some scenes. To test: