American Dynamics AD1981 Spécifications télécharger pdf (Page 42)

AD2079 Glossary G-1

Glossary

alarm The system's response when a camera input changes from its normal state to its

abnormal state (if the system has been configured to respond to such a

condition).When an alarm is triggered, the T

OUCH

RACKER

beeps until you

acknowledge the alarm via the

Ack

button.

arming Arming is the process by which a video monitor or monitor block is associated with a

specific alarm contact, and is assigned an appropriate monitor arming code.

arming code A monitor’s arming code defines how an alarm scene will be displayed, queued, and

cleared on the monitor. Display methods include Single, Dual, and Block. Queuing

methods include Hold and Sequence. Clearance methods include Instant, Auto, and

Manual.

auxiliary A relay switch which controls the “on” or “off” state of devices such as door locks,

gates, and lights.

baud rate A rate of transmission measured by the number of bits per second sent over a

computer-controlled communications line.

cable two or more wires bundled together.

called monitor The monitor that displays the video that is being controlled by the AD2079.

camera command A directive issued to the camera via the AD2079 - a pan, tilt, zoom, focus, or iris

command.

camera lock camera lock is a programmable function which prevents a user or keyboard from

controlling camera pan/tilt and lens adjustments, preset positioning, and auxiliary

actions.

checksum A summation of digits or bits used primarily for checking purposes and summed

according to an arbitrary set of rules. The checksum is used to verify the integrity of

data.

dwell time The amount of time an individual camera scene is displayed on a monitor screen

before being replaced by the next scene in sequence.

fixed camera A camera which views a scene from a single perspective. A fixed camera cannot pan

or tilt, or make automatic lens adjustments.

flip To instantaneously position a dome 180° in the opposite direction of where it is

currently pointing.

focus The process of adjusting the clarity of a scene or an object, as seen through a

camera.

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American Dynamics AD1981 Spécifications Page 42