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I
input
A device such as a smoke detector or twilight sensor that, when configured to do so,
can trigger an alarm when it undergoes a change in state.
iris
The camera component that determines how light enters the camera. By adjusting
the iris, you can adjust the brightness and darkness of the video on the monitor.
J
joystick
The AD2079 keyboard's three-vector control device that enables the user to control
the movement (pan, tilt, and zoom) of a pan/tilt camera or dome.
K
keypad
The portion of the AD2079 containing the buttons that enable you to call up an
individual camera, control a camera's iris, display shots, run Monitor Tours, and arm
or disarm monitors.
L
LED
Light emitting diode. The display section of the AD2079 contains 18 seven segment
LEDs which display site, monitor, and camera numbers, as well as the various status
messages described in this manual.
latched relay
An auxiliary relay that remains active until it is deactivated using the appropriate off
switch. An example of a latched auxiliary is a light. When the keyboard controller's
Auxiliary On button is pressed, the light is turned on. When the Auxiliary Off button
is pressed, the light is turned off.
log in
If this function is enabled, system keyboard access is restricted to only those users
entering a user number (1-64) and a six digit passcode. When the function is
disabled, system access is restricted only by the priority level set for the keyboard in
use.
M
momentary relay
An auxiliary relay that is active as long as its control button is pressed. An example
of momentary auxiliary action is a door that remains unlocked as long as the
Auxiliary On button is pressed. When the button is released, the door returns to its
locked state. See also auxiliary and latched relay.
monitor
The screen where camera video is displayed.
monitor tour
A sequence of video inputs with specified dwell times that are displayed one after
the other on a monitor called manually by a system operator. See also system tour
O
output
An auxiliary signal. Outputs lock and unlock doors, turn lights on and off, activate
audible alarms, etc. Outputs can also be initiated automatically in response to an
alarm.
P
pan
Side to side camera movement
pattern
A sequence of pan, tilt, zoom, focus, and iris movements from a single
programmable dome. The dome "learns" these movements in real time through
keyboard programming, and can replay them automatically.
G-2
See also auxiliary and momentary relay.
AD168 System Administrator's Manual
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