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Appendix — Glossary
AREAS
Programmed start and end points of the dome's field of view around its pan axis.
Each area is a part of a circular viewing area that extends around the dome. The areas can be different sizes.
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.
ON-SCREEN MENU
The text overlay menu system used for setting dome features. The utility is accessed using a
keystroke combination. The utility provides settings for camera functions, zoom, alarms, text
display, and password protection.
FLIP
Allows the dome to automatically turn 180 degrees when the camera tilts to its lower limit and stays in that position for a
brief delay. 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.
IR MODE
A feature of the camera that permits manual or automatic switching between color and IR
(black-and-white) operation. When IR mode is active, clearer images may be obtained under
low-light conditions.
LINE LOCK
Allows you to phase lock the video with the AC power line. When line lock is enabled, it prevents vertical video rolling
when switching multiple cameras to a single monitor. If text appears slightly tinted on color monitors, disabling the line
lock may prevent this problem.
NAME INFORMATION
Relates to the display the dome name, the area where the dome is pointing, the name of the preset or pattern that is running,
and alarm names. The display of each type of name setting can be enabled or disabled. When the display of camera or area
title(name) is enabled, the information appears on the screen continuously. Preset, tour and pattern titles(names) appear
only while they are active.
LOW SHUTTER
Setting used to improve the quality of video obtained 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).