GLOSSARY - TM-5-6350-275-24-P0519

TM 5-6350-275-24&P

GLOSSARY

TERM

EXPLANATION

Access

The method by which the reconfiguration program is entered, that is, by pressing

function keys whose effects are displayed on a menu on your terminal screen.

Access Control

The subsystem which allows locations to be protected, by prohibiting all entry into

them except by authorized personnel carrying access cards.

Access Inhibited

A condition which can be applied to a security zone. While the condition applies, no

access is permitted into the zone

Access Level

A record containing one or more zones into which access is permitted, with the times

at which they may be entered. Access levels are then assigned to holder records,

thus permitting different groups of personnel to be given access to different zones at

different times

Accountability

The ability of the access control subsystem to keep track of access card holders as

they enter and leave security zones. Three levels of accountability are available:

full, which can track holders as they enter and leave zones, partial, which tracks

holders only as they enter zones, and none, which does not track holders.

Accountability can also be used to detect passback violations. The level of

accountability is defined when the system is configured. Accountability is also known

as "Tracking".

Alarm

A warning in the form of an audible tone and written phrase, appearing on an

operator's screen. The phrase describes a system event which requires the

operator's immediate attention.

Alarm Call-up Time

The length of time that a display from a CCTV camera is "locked" to appear on a

monitor after it has been triggered by the generation of an alarm

Alarm Frame

The area on an operator's VDU in which up to four "top of queue" alarms can be

displayed

Alarm Queue

An area within the system in which alarms are held in order of their priority and the

time at which they were generated. Up to sixteen alarm queues can be maintained

by the system

Alphanumeric Character

Any character that can be entered using the keyboard, that is, letters of the alphabet,

numeric digits, and special symbols such as the hash (#).

Analog

Any measurable quantity.

Analog Point

A point which is used to hold a value which has been measured, rather than being set

to one of two or four states. The analog point is generally used to monitor plant

performance rather than in specific security applications; for example, where the rate

at which water is flowing through a pipeline needs to be recorded. In such a case, a

transducer can be used to measure the flow rate and convert it to an electrical

current. The current is then recorded, as a number, by the remote station and sent to

the master station. It is then converted into the required engineering value and

stored in an analog point record.

Archive Rate

The rate at which timed archived data is transferred to disk.

Glossary-1