This document contains the definitions of the terms used in these Lists,
in alphabetical order.
| Definitions |
|
Cat2
Cat6 |
"Accuracy"
(Usually measured in terms of inaccuracy) is the maximum deviation,
positive or negative, of an indicated value from an accepted standard
or true value.
|
| Cat7 |
"Active fiight control systems"
Function to prevent undesirable "aircraft" and missile motions
or structural loads by autonomously processing outputs from multiple
sensors and then providing necessary preventive commands to effect
automatic control
|
Cat6
Cat8 |
"Active pixel"
A minimum (single) element of the solid state array which has
a photoelectric transfer function when exposed to light (electromagnetic)
radiation.
|
Cat 1
ML7 |
"Adapted for use in war"
Any modification or selection (such as altering purity, shelf
life, virulence, dissemination characteristics, or resistance
to UV radiation) designed to increase the effectiveness in producing
casualties in men or animals, degrading equipment or damaging
crops or the environment
|
| Cat 2 |
"Adaptive control"
A control system that adjusts the response from conditions
detected during the operation (Reference: ISO 2806-1980).
|
| ML8 |
"Additives"
Substances used in explosive formulations to improve their
properties.
|
Cat 7&9
ML 8 ML 9
ML 10 |
"Aircraft"
A fixed wing, swivel wing, rotary wing ~elicopter), tilt rotor
or tilt-wing airborne vehicle. (See also "civil aircraft").
|
| Cat 2 |
"Angular position deviation"
The maximum difference between angular position and the actual,
very accurately measured angular position after the workpiece
mount of the table has been turned out of its initial position.
(Reference: VDIIVDE 2617, Draft: 'Rotary tables on coordinate
measuring machines').
|
Cat 3
Cat 4
Cat 5 |
"Assembly"
A number of electronic components (i.e., "circuit elements",
"discrete components", integrated circuits, etc.) connected together
to perform (a) specific function(s), replaceable as an entity
and normally capable of being disassembled.
N.B.l - "Circuit element": a single active or passive
functional part of an electronic circuit, such as one diode, one
transistor, one resistor, one capacitor, etc.
N.B.2 - "Discrete component": a separately packaged
"circuit element" with its own external connections.
|
| Cat 5 |
"Asynchronous transfer mode"
("ATM")
A transfer mode in which the information is organised into
cells; it is asynchronous in the sense that the recurrence of
cells depends on the required or instantaneous bit rate. (CCITT
Recommendation L.113)
|
| Cat 5 |
"ATM" - see "Asynchronous
transfer mode" |
| Cat 6 |
"Automatic target tracking"
A processing technique that automatically determines and provides
as output an extrapolated value of the most probable position
of the target in real time.
|
| Cat 5 |
"Bandwidth of one voice
channel"
In the case of data communication equipment designed to operate
in one voice channel of 3,100 Hz, as defined in CCITT Recommendation
G.151.
|
| Cat 3 |
"Basic gate propagation
delay time"
The propagation delay time value corresponding to the basic
gate used within a "family" of "monolithic integrated circuits".
This may be specified, for a given "family", either as the propagation
delay time per typical gate or as the typical propagation delay
time per gate.
N.B. "Basic gate propagation delay time" is not to be confused
with the input/output delay time of a complex "monolithic integrated
circuit".
|
| GTN |
"Basic scientific research"
Experimental or theoretical work undertaken principally. to
acquire new knowledge of the fundamental principles of phenomena
or observable facts, not primarily directed towards a specific
practical aim or objective.
|
| Cat 6 |
"Beat length"
The distance over which two orthogonally polarised signals,
initially in phase, must pass in order to achieve a 2 Pi radian(s)
phase difference.
|
| Cat 7 |
"Bias" (accelerometer)
An accelerometer output when no acceleration is applied.
|
| ML 7 |
"Biocatalysts"
"Enzymes" or other biological compounds which bind to and accelerate
the degradation of CW agents.
N.B. "Enzymes": "biocatalysts" for specific chemical
or biochemical reactions.
|
| ML 7 |
"Biopolymers"
Biological macromoleccles as follows:
- "Enzymes";
- Antibodies, "monoclonal", "polyclonal" or "anti-idiotypic";
- Specially designed or specially processed "receptors";
N.B.l - "Enzymes": "Biocatalysts" for specific chemical
or biochemical reactions;
N.B.2 - "Anti-idiotypic antibodies": Antibodies which bind
to the specific antigen binding sites of other antibodies;
N.B.3 - "Monoclonal antibodies": Proteins which bind to
one antigenic site and are produced by a single clone of cells;
N.B.4 - "Polyclonal antibodies": A mixture of proteins
which bind to the specific antigen and are produced by more than
one clone of cells;
N.B.5 - "Receptors": Biological macromolecular structures
capable of binding ligands, the binding of which affects physiological
functions.
|
| Cat 2 |
"Camming" (axial displacement)
Axial displacement in one revolution of the main spindle measured
in a plane perpendicular to the spindle faceplate, at a point
next to the circumference of the spindle faceplate (Reference:
ISO 230/1 1986, paragraph 5.63).
|
| Cat 4 |
"CE" see "computing element" |
| Cat 6 |
"Chemical Laser"
A "laser" in which the excited species is produced by the output
energy from a chemical reaction.
|
| Cat 7 |
"Circulation-controlled
anti-torque or circulation-controlled direction control systems
Use air blown over aerodynamic surfaces to increase or control
the forces generated by the surfaces.
|
Cat 7
Cat 9
ML 10 |
"Civil aircraft"
Those "aircraft" listed by designation in published airworthiness
certification lists by the civil aviation authorities to fly commercial
civil internal and external routes or for legitimate civil, private
or business use. (See also "aircraft").
|
| Cat 1 |
"Commingled"
Filament to filament blending of thermoplastic fibres and reinforeement
fibres in order to produce a fibre reinforoement "matrix" mix
in total fibre form.
|
| Cat 1 |
"Comminution"
A process to reduce a material to particles by crushing or
grinding.
|
| Cat 5 |
"Common channel signalling"
A signalling method in which a single channel between exchanges
conveys, by means of labelled messages, signalling information
relating to a multiplicity of circuits or calls and other information
such as that used for network management.
|
| Cat 5 |
"Communications channel
controller"
The physical interface which controls the flow of synchronous
or asynchronous digital information. It is an assembly that can
be integrated into computer or telecommunications equipment to
provide communications access.
|
Cat 1
Cat 6
Cat 8
Cat 9 |
"Composite"
A "matrix" and an additional phase or additional phases consisting
of particles, whiskers, fibres or any combination thereo~ present
for a specific purpose or purposes.
|
| Cat 4 |
"Composite theoretical performance"
("CTP")
A measure of computational performance given in millions of
theoretical operations per second (Mtops), calculated using the
aggregation of "computing elements" ("CE"). (See Category 4, Technical
Note.)
|
| Cat 2 |
"Compound rotary table"
A table allowing the workpiece to rotate and tilt about two
non-parallel axes, which can be coordinated simultaneously for
"contouring control".
|
| Cat 4 |
"Computer using facility"
The end-user's contiguous and accessible facilities:
- Housing the "computer operating area" and those end-user
flinctions which are being supported by the stated application
of the electronic computer and its related equipment; and
- Not extending beyond 1,500 m in any direction from the centre
of the "computer operating area".
N.B. - "Computer operating area": the immediate contiguous
and accessible area around the electronic computer, where the
normal operating, support and service functions take place.
|
| Cat 4 |
"Computing element" ("CE")
The smallest computational unit that produces an arithmetic
or logic result.
|
| Cat 2 |
"Contouring control"
Two or more "numerically controlled" motions operating in accordance
with instructions that specify the next required position and
the required feed rates to that position. These feed rates are
varied in relation to each other so that a desired contour is
generated (Ref. ISO/DIS 2806-1980).
|
Cat 1
Cat 3
Cat 6 |
"Critical temperature"
(sometimes referred to as the transition temperature) of a
specific "superconductive" material is the temperature at which
the material loses all resistance to the flow of direct eleetrical
current.
|
| Cat 5 |
"Cryptography"
The discipline which embodies principles, means and methods
for the transformation of data in order to hide its information
content, p~vent its undetected modification or prevent its unauthorized
use. "Cryptography" is limited to the transformation of information
using one or more "secret parameters" (e.g., crypto variables)
or associated key management.
N.B. - "Secret parameter": a constant or key kept from
the knowledge of others or shared only within a group.
|
| Cat 4 |
"CTP" = see "Composite theoretical
performance" |
Cat 4
Cat 5 |
"Datagram"
A self-contained, independent entity of data carrying sufficient
information to be routed from the source to the destination data
terminal equipment without reliance on earlier exchanges between
this source or destination data terminal equipment and the transporting
network.
|
| Cat 5 |
"Data signalling rate"
The rate, as defined in ITU Recommendation 53-36, taking into
account that, for non-binary modulation, baud and bit per second
are not equal. Bits for coding, checking and synchronisation functions
are to be included.
N.B.l - When determining the "data signalling rate", servicing
and administrative channels shall be excluded.
N.B.2 - It is the maximum one-way rate, i.e., the maximum
rate in either transmission or reception.
|
| Cat 6 |
"Deformable Mirrors"
Mirrors:
- Having a single continuous optical reflecting surface which
is dynamically deformed by the application of individual torques
or forces to compensate for distortions in the optical waveform
incident upon the mirror; or
- Having multiple optical reflecting elements that can be
individually and dynamically repositioned by the application
of torques or forces to compensate for distortions in the
optical waveform incident upon the mirror.
"Deformable mirrors" are also known as adaptive optic mirrors.
|
| GTN |
"Development"
Is related to all stages prior to serial production, such as:
design, design research, design analyses, design concepts, assembly
and testing of prototypes, pilot production schemes, design data,
process of transforming design data into a product, configuration
design, integration design, layouts.
|
Cat 1
Cat 2
Cat 9 |
"Diffusion bonding"
A solid state molecularjoining of at least two separate metals
into a single piece with a joint strength equivalent to that of
the weakest material.
|
Cat 4
Cat 5 |
"Digital computer"
Equipment which can, in the form of one or more discrete variables:
- Accept data;
- Store data or instructions in fixed or alterable (writable)
storage devices.
- Process data by means of a stored sequence of instructions
which is modifiable; and
- Provide output of data.
N.B. Modifications of a stored sequence of instructions
include replacement of fixed storage devices, but not a physical
change in wiring or intereonnections.
|
| Cat 5 |
"Digital transfer rate"
The total bit rate of the information that is directly transferred
on any type of mediurn. (See also "total digital transfer rate").
|
| Cat 2 |
"Direct-acting hydraulic
pressing"
A deformation process which uses a fluid-filled flexible bladder
in direct contact with the workpiece.
|
| Cat 7 |
"Drift rate" (gyro)
The time rate of output deviation from the desired outpuL It
consists of random and systematic components and is expresed as
an equivalent input angular displacement per unit time with respect
to inertial space.
|
| Cat 5 |
"Dynamic adaptive routing"
Automatic rerouting of traffic based on sensing and analysis
of current actual network conditions.
N.B. - This does not include cases of routing decisions
taken on predefined information.
|
| Cat 3 |
"Dynamic signal analysers"
"Signal analysers" which use digital sampling and tranformation
techniques to form a Fourier spectrum display of the given waveform
including amplitude and phase information.
(See also "signal analysers").
|
