VT-PTZ Series
83
V. 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 (VECTOR SCAN)
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-
light situations. This setting does not effect camera operation in normal lighting
situations. See also Automatic Gain Control (AGC).
FLIP/ DIGITAL FLIP
It allows the dome to turn 180 degrees when the camera tilts to its lower limit. When the
dome flips (rotates), the camera starts moving upward as long as the tilt control is kept
in the down position. Once the control is released, the tilt control returns to its normal
operational mode. The flip feature is useful when you need to track someone who walks
directly beneath the dome and continues on the other side.
HOME POSITION
The default position to which the dome camera returns after an assigned period of
inactivity passes. The default position may be a Preset, Tour, Pattern, or No Action.
INPUT ALARM
A connection point on the dome camera that enables the system to monitor Input
Devices. There are four inputs available for the dome camera.
