GLOSSARY - TM-5-6350-275-24-P0524

TM 5-6350-275-24&P

GLOSSARY

TERM

EXPLANATION

Lock

To tie the pictures received from a camera so that they are displayed on one

monitor only. Cameras may be locked by any logged-in operator.

Logging Off

The concluding procedure undertaken at a workstation to return to the BTOS

SignOn form.

Logging On

Completing the BTOS SignOn form to gain entry to the operator or

reconfiguration environment.

Magnetic Stripe

An access card type, holding a 6 digit code, which is assigned by the

system, and a card number of up to 6 digits.

Marginal

The condition where a remote station has been polled (see Polling) a

number of times, but has not always responded. The marginal condition is

considered to exist when the ratio of unsuccessful to successful attempts by

the master station to acquire a remote station's data exceeds a designated

limit.

Master Copy

The copy of the engineering table records which maintains the "last saved"

version of the working copy.

Master Station

A combination of hardware and software installed within a control center to

provide the necessary SCADA facilities.

A list of command options from which a selection can be made.

Mimic

A display containing a mixture of graphics and text showing items of plant in

diagrammatic form and/or timed archived data on a line graph or bar chart.

Mnemonic

A brief "memory jogging" description of a point, consisting of up to three

parts: a prefix, numeric, and suffix.

Monitor

In the CCTV subsystem, indicates a screen on which views from cameras

are shown to operators.

Monitor Sequence

A succession of views from a camera, each held for a specified period,

displayed on a specified monitor. The sequence can be run as a continuous

cycle, halted at the operator's command.

Mount

The operation of inserting a floppy disk into a disk drive.

Multi-line Poller

Describes the configuration where a poller communicates with stations by up

to ten channels. The channels are divided into pairs, one of which is

connected to the primary bearer, the other to the secondary bearer.

Network

The interconnection of a number of computers or computer terminals.

Non-Acquired Data

Data archived by a remote station and returned to the master station

independently of current data states and/or values.

NRZI Encoding

Non-Return to Zero Inverted. Indicates a type of data encoding which can be

used where synchronous transmission of data is employed.

Numeric

The second part of a point mnemonic which identifies a point by a number in

the range 1-9999.

Glossary-6