GLOSSARY - TM-5-6350-275-24-P0528

TM 5-6350-275-24&P

GLOSSARY

TERM

EXPLANATION

Pulse Accumulation

A point used to maintain a count of events relating to an item of monitored

Point

equipment. One example of a simple application for this point type is to

time the stile turns, the count is increased by one. If a pseudo process is

applied to the point to reset the accumulator (for example daily), the average

number of personnel entering through the turnstile each day can be

calculated. Other measurements that can be calculated using pulse

accumulation points include revolutions per minute (RPM) and cycles per

second (CPS).

Queue

A place in the system's memory in which alarms are maintained.

QWERTY Keyboard

A typewriter term used to reference a keyboard that has the standard

English language layout, where the top row of alphabetic keys starts with the

letters QWERTY.

Radio

A medium for the transmission of data using radio signals.

RAM

Random Access Memory. Memory which can be read and written to at high

speed, but retains no data when the power supply is switched off.

Real Point

A point which physically exists and whose value is therefore acquired, rather

than calculated.

Real Station

A remote station that physically exists.

Reconfiguration

The process of creating and subsequently updating the ICIDS database or

the mode of operation that facilitates this process.

Remote Station or

A remote intelligent computer which can control and monitor connected

Remote Area Data

equipment. Also known as a remote terminal unit (RTU) or a Remote Area

Collector

Data Collector (RADC).

Resident Mimic

A mimic held locally, at an operator's workstation, rather than at the cluster

master.

Restore

The process of transferring data from one disk to another, overwriting any

existing data.

RTS

Ready To Send. The signal sent by a processor to a modem requesting it to

prepare the communications path for a data transmission.

RTU

Remote Terminal Unit. An alternative term for remote station.

Sample Rate

Indicates the frequency at which the system reads the acquired value for an

analog point and records it in RAM so that minimum, average, and/or

maximum values can be calculated and archived.

SCADA

Security (or Supervisory) Control and Data Acquisition. A term used to

describe a system which provides for the monitoring and control of remote

equipment by one or more control centers, principally for security purposes.

Secondary Access Level

An access level which comes into force on certain user defined days (for

example public holidays) when a different pattern of access is required.

Glossary-10