GLOSSARY - TM-5-6350-275-24-P0523

TM 5-6350-275-24&P

GLOSSARY

TERM

EXPLANATION

Floppy Disk

A storage medium for programs and records, so called because it is

constructed of flexible plastic.

Field

An area on a form, used to enter a data element which defines a system

parameter.

File

A set of related records held on disk and treated as a unit.

File Name

The name given to a file so that it can be uniquely identified.

Form

A display containing a number of pre-defined fields into which data entries

are made.

Frame

A rectangular area within a display, in which system data is shown.

Group

A collection of up to 64 remote stations which are logically or geographically

related.

Hard Disk

A storage medium for programs and records, so called because it is metal

coated and rigid.

Hardware

Any item of physical computer equipment.

Holder Record

A record held for every person permitted to enter security zones. The holder

record gives details of (at least) the holder's name, card number, PIN (if

any), and the access levels assigned to him or her. It may hold other details

as required.

Hydra Asynchronous

A protocol used between a master station and a Telemetry Communications

remote station to transmit data asynchronously.

Hydra Synchronous

A protocol used between a master station and a Telemetry Communications

remote station to transmit data synchronously.

Infrared Reader

A reader type used with certain access cards.

Intelligent Access Unit

A device located adjacent to a portal, controlling entry or exit for that portal.

Initialize

The automatic setting of indicators and processes before a program is run.

The term is also used to describe the operation performed on hard or floppy

disks before they are used for storing data.

Jogging Control Point

A control point used to operate an item of plant by a pre-defined amount.

Land Line

The general term used to describe a dedicated communications bearer,

such as a private wire or optical fiber.

Limit Band

A range of values used to define scales for analog points. Up to five limit

bands can be applied to a point: HiHi, Hi, Mid, Lo. and LoLo.

Line

A term used to reference the board within the remote station which supports

a number of points. Also used as an alternative term for "Channel".

Link

A single display within a chain.

Load

The process of transferring disk-held data to local memory (RAM).

Glossary-5