Vitek VT-PTZ220HD, Manual

Page: 65 / 69

HD-SDI CAMERA
63
3. When a BNC cable adaptor is used to combine
two or more BNC cables for distributed HD-SDI
video transfer, make sure the impedance of the
adaptor is 75
Ω . Otherwise, it may cause shorter
transfer distance or broken video transfer.
RS-485 communication is not
available.
Check RS-485 communication settings
12. Glossary
ALARM ACTIONS
The assigned responses of the dome camera when there is input status change. The
dome may call Presets for each of the eight inputs. The dome reports the alarm states
to the Keyboard controller for processing.
AREA TITLE
It is the name of the horizontal sector from a certain start point to end point of the
selected dome. Up to 24 areas can be programmed for the dome.
AUTOMATIC GAIN CONTROL (AGC)
Allows for the amplification of the video signal in scenes with minimal ambient light.
Many low-light scenes result in picture noise. As gain is increased, the picture noise is
also amplified. When AGC is enabled, the value of the gain setting is based on
feedback from the camera. When AGC is disabled, the camera uses the value set for
the manual gain setting. The trade-off between picture level and noise may be adjusted
when AGC is disabled.
DIAGONALSCAN
Move from start point to end point including tilt and zoom simultaneously and linearly.
DIGITAL SLOW SHUTTER (DSS)
DSS enhances video quality in extreme low-light situations. When the Low Shutter
setting is enabled, low-light information is collected over multiple fields based on the
Shutter Limit setting. As a result, video may appear blurred or choppy in extreme low-