GLOSSARY - TM-5-6350-275-24-P0530

TM 5-6350-275-24&P

GLOSSARY

TERM

EXPLANATION

Step

A view from a specified camera, held for a specified period, forming one

stage of a monitor Sequence. Sequences may consist of up to 64 steps. An

"auto-hold" step is one held by the system until an operator indicates that

the sequence is to proceed.

Suffix

The third part of a point mnemonic, consisting of up to four alphanumeric

characters.

Swipe

To insert an access card into a reader unit, passing it against the reader

head, so that it may be scanned by the card reader.

Switched-line Poller

Describes a configuration in which a poller is connected to a group of

remote stations by a switching unit, and uses one channel to operate the

unit and another to communicate with the connected remote station.

Synchronous

A method of data transmission in which each data element is transmitted

Transmission

according to a given time sequence.

System Administrator

A person responsible for the administration of the entire system.

System Code

A 6 digit number assigned to some access card types when they are

manufactured. It ensures that only cards which have been made for your

system are acceptable to it.

System Database

The structured grouping of data which holds details of groups, stations,

points, and other significant system records.

Telemetry

The recording of readings from instruments, undertaken from a distance.

Temporary Access Level

An access level used to make temporary amendments to the access rights

of a card holder.

Ternary Point

A class of status point which can have three valid states (for example

open/moving/closed). Ternary points consist of a pair of status points whose

states are combined. The four possible combined states of these points are:

(1) Off; Off indicating that the ternary point is Off; (2) On, Off indicating that

the ternary point is On, (3) Off, On indicating that the point is in its third

state (for example moving) and (4) On, On which is an invalid state and

indicates the presence of a fault.

Timed Archived Data

Point data transferred to disk at predetermined time intervals. In the case of

an analog point, the data will be in the form of minimum, average and/or

maximum values which are calculated from a list of sample readings (see

Sample Rate) recorded since the point was last timed archived. In the case

of a status or pulse accumulation point, the current state and/or value of the

point is recorded on disk.

Top of Queue

The oldest, highest priority alarm in an alarm queue is said to occupy the

top of queue position.

Transmission Mode

Indicates the means by which data is transmitted within the system.

Underband

The condition where the value of an analog point has fallen below the

minimum allowed value; therefore a fault has occurred within the telemetry

system. The fault is usually connected with a transducer.

Glossary-12