| Appendix 5 - Definition
of Terms, P - S |
| Cat 5 |
"PABX" - see "Private automatic
branch exchange". |
| Cat 6 |
"Peak power"
Energy per pulse in joules divided by the pulse duration in seconds.
|
| Cat 5 |
"Personalized smart card"
A smart card containing a microcircuit, in accordance with ISO/IEC
7816, which has been programmed by the issuer and cannot be changed
by the user.
|
| Cat 7 |
"Power management"
Changing the transmitted power of the altimeter signal so that received
power at the "aircraft" altitude is always at the minimum necessary
to determine the altitude.
|
| ML 8 |
"Precursors"
Specialty chemicals used in the manufacture of militazy explosives.
|
| Cat 1 |
"Previously separated"
The application of any process intended to incraase the concentration
of the controlled isotope.
|
| Cat 7 |
"Primary Flight Control"
"Aircraft" stability or manoeuvering control using forcelmoment generators,
i.e. aerodynamic control surfaces or propulsive thrust vectoring.
|
| Cat 4 |
"Principal element"
An element is a "principal element" when its replacement value is
more than 35% of the total value of the system of which it is an element.
Element value is the price paid for the element by the manufacturer
of the system, or by the system integrator. Total value is the normal
international selling price to unrelated parties at the point of manufacture
or consolidation of shipment.
|
| Cat 5 |
"Private automatic branch exchange"
("PABX")
An automatic telephone exchange, typically incorporating a position
for an attendant, designed to provide access to the public network and
serving extensions in an institution such as a business, government,
public service or similar organisation.
|
| ML 18 |
"Production"
Includes design, examination, manufacture, testing and checking.
|
| GTN |
"Production"
Means all production stages, such as: product engineering, manufacture,
integration, assembly (mounting), inspection, testing, quality assurance.
|
Cat 2
Cat 4
Cat 5 |
"Programme"
A sequence of instructions to carry out a process in, or convertible
into, a form executable by an electronic computer.
|
| Cat 6 |
"Pulse compression"
The coding and processing of a radar signal pulse of long time duration
to one of short time duration, while maintaining the benefits of high
pulse energy.
|
| Cat 6 |
"Pulse duration"
Duration of a "laser" pulse measured at Full Width Half Intensity
(FWHI) levels.
|
| Cat 6 |
"Q-switched laser"
A "laser" in which the energy is stored in the population inversion
or in the optical resonator and subsequendy emitted in a pulse.
|
| Cat 6 |
"Radar frequency agility"
Any technique which changes, in a pseudo-random sequence, the carrier
frequency of a pulsed radar transmitter between pulses or between groups
of pulses by an amount equal to or larger than the pulse bandwidth.
|
| Cat 6 |
"Radar spread spectrum"
My modulation technique for spreading energy originating from a signal
with a relatively narrow frequency band, over a much wider band of frequencies,
by using random or pseud-random coding.
|
| Cat 3 |
"Real time bandwidth"
For "dynamic signal analysers", the widest frequency range which
the analyser can output to display or mass storage without causing any
discontinuity in the analysis of the input data. For analysers with
more than one channel, the channel configuration yielding the widest
"real-time bandwidth" shall be used to make the calculation.
|
Cat 2
Cat 4 |
"Real time processing"
The processing of data by a computer system providing a required
level of service, as a function of available resources, within a guaranteed
response time, regardless of the load of the system, when stimulated
by an external event.
|
| GTN |
"Required"
As applied to "technology", refers to only that portion of "technology"
which is peculiarly responsible for achieving or exceeding the controlled
performance levels, characteristics or functions. Such "required" "technology"
may be shared by different products.
|
| Cat 2 |
"Resolution"
The least increment of a measuring device; on digital instruments,
the least significant bit. (Reference: ANSI B-89.1.12)
|
| ML 7 |
"Riot control agents"
Substances which produce temporary irritating or disabling physical
effects which disappear within minutes of removal from exposure. There
is no significant risk of permanent injury and medical treatment is
rarely required.
|
Cat 2
Cat 8
ML 17 |
"Robot"
A manipulation mechanism, which may be of the continuous path or
of the point-to-point variety, may use sensors, and has all the following
characteristics:
- Is multifunctional;
- Is capable of positioning or orienting material, parts, tools
or special devices through variable movements in three dimensional
space;
- Incorporates three or more closed or open loop servo-devices which
may include stepping motors; and
- Has "user-accessible programmability" by means of the teachiplayback
method or by means of an electronic computer which may be a programmable
logic controller, i.e., without mechanical intervention.
N.B. - The above definition does not include the following
devices:
- Manipulation mechanisms which are only manuallylteleoperator
controllable;
- Fixed sequence manipulation mechanisms which are automated
moving devices, operating according to mechanically fixed programmed
motions. The programme is mechanically limited by fixed stops,
such as pins or cams. The sequence of motions and the selection
of paths or angles are not variable or changeable by mechanical,
electronic or electrical means;
- Mechanically controlled variable sequence manipulation mechanisms
which are automated moving devices, operating according to mechanically
fixed programmed motions. The programme is mechanically limited
by fixed, but adjustable stops, such as pins or cams. The sequence
of motions and the selection of paths or angles are variable
within the fixed programme pattern. Variations or modifications
of the programme pattern (e.g., changes of pins or exchanges
of cams) in one or more motion axes are accomplished only through
mechanical operations;
- Non-servo-controlled variable sequence manipulation mechanisms
which are automated moving devices, operating according to mechanically
fixed programmed motions. The programme is variable but the
sequence proceeds only by the binary signal from mechanically
fixed electrical binary devices or adjustable stops;
- Stacker cranes defined as Cartesian coordinate manipulator
systems manufactured as an integral part of a vertical array
of storage bins and designed to access the contents of those
bins for storage or retrieval.
|
| Cat 1 |
"Rotary Atomisation"
A process to reduce a stream or pool of molten metal to droplets
to a diameter of 500 µm or less by centrifugal force.
|
| Cat 2 |
"Run out" (out-of-true running)
Radial displacement in one revolution of the main spindle measured
in a plane perpendicular to the spindle axis at a point on the external
or internal revolving surface to be tested (Reference: ISO 230/1-1986,
paragraph 5.61).
|
| Cat 7 |
"Scale factor" (gyro or accelerometer)
The ratio of change in output to a change in the input intended to
be measured. Scale factor is generally evaluated as the slope of the
straight line that can be fitted by the method of least squares to input-output
data obtained by varying the input cyclically over the input range.
|
| SL Cat 6 |
"Scanning Arrays"
"Scanning Arrays" are defined as "focal plane arrays" designed for
use with a scanning optical system that images a scene in a sequential
manner to produce an image.
|
| Cat 5 |
"SDH" - see "Synchronous digital
hierarchy" |
| Cat 3 |
"Settling time"
The time required for the output to come within one-half bit of the
final value when switching between any two levels of the converter.
|
| Cat 6 |
"SHPL" - see "Super High Power
Laser" |
| Cat 3 |
"Signal analysers"
Apparatus capable of measuring and displaying basic properties of
the single-frequency components of multi-frequency signals.
|
| Cat 3 |
"Signal analysers" (dynamic) -
see "Dynamic signal analysers" |
Cat 3
Cat 4
Cat 5 |
"Signal processing"
The processing of externally derived information-bearing signals
by algorithms such as time compression, filtering, extraction, selection,
correlation, convolution or transformations between domains (e.g., fast
Fourier transform or Walsh transform).
|
| Both Lists |
"Software"
A collection of one or more "programmes" or "microprogrammes" fixed
in any tangible medium of expression.
|
| Cat 5 |
"SONET" - see "Synchronous optical
network" |
| Cat 4 |
"Source code" (or source language)
A convenient expression of one or more processes which may be turned
by a programming system into equipment executable form ("object code"
(or object language)).
|
Cat 7
Cat 9 |
"Spacecraft"
Active and passive satellites and space probes.
|
Cat 3
Cat 6
ML 23 |
"Space qualified"
Products designed, manufactured and tested to meet the special electrical,
mechanical or environmental requirements for use in the launch and deployment
of satellites or high altitude flight systems operating at altitudes
of 100 km or higher.
|
|
Cat 5 |
"Spectral efficiency"
A figure of merit parametrized to characterize the efficiency of
transmission system which uses complex modulation schemes such as QAM,
Trellis coding, QSPK (Q-phased shift key), etc. It is defined as follows:
"Spectral efficency" = \F("Digita1 transfer rate"(bits/second);6 dB
spectrum bandwidth (Hz))
|
| Cat 1 |
"Splat Quenching"
A process to "solidify rapidly" a molten metal stream impinging upon
a chilled block, forming a flake-like product.
N.B. - "Solidify rapidly": solidification of molten material
at cooling rates exceeding 1,000 K/sec.
|
| Cat 5 |
"Spread spectrum"
The technique whereby energy in a relatively narrow-band communication
channel is spread over a much wider energy spectrum.
|
| Cat 6 |
"Spread spectrum" radar - see
"Radar spread spectrum" |
| Cat 4 |
"Sputtering"
An overlay coating process wherein positively charged ions are accelerated
by an electric field towards the surface of a target (coating material).
The kinetic energy of the impacting ions is sufficient to cause target
surface atoms to be released and deposited on the substrate.
N.B. - Triode, magnetron or radio frequency sputtering to increase
adhesion of coating and rate of deposition are ordinary modifications
of the process.
|
| Cat 7 |
"Stability"
Standard deviation (1 sigma) of the variation of a particular parameter
from its calibrated value measured under stable temperature conditions.
This can be expressed as a function of time.
|
| SL Cat 6 |
"Staring Arrays"
"Staring Arrays" are defined as "focal plane arrays" designed
for use with a non-scanning optical system that images a scene.
|
Cat 2
Cat 3
Cat 5 |
"Stored programme controlled"
A control using instructions stored in an electronic storage which
a processor can execute in order to direct the performance of predetermined
functions.
N.B. - Equipment may be "stored programme controlled" whether
the electronic storage is internal or external to the equipment.
|
| Cat 3 |
"Substrate"
A sheet of base material with or without an interconnection pattern
and on which or within which "discrete components" or integrated circuits
or both can be located.
N.B. - "Discrete component": a separately packaged "circuit element"
with its own external connections.
|
| Cat 6 |
"Substrate blanks"
Monolithic compounds with dimensions suitable for the production
of optical elements such as mirrors or optical windows.
|
| Cat 2 |
"Superalloys"
Nickel-, cobalt- or iron-base alloys having strengths superior to
any alloys in the MSI 300 series at temperatures over 922 K (6490C)
under severe environmental and operating conditions.
|
Cat 1
Cat 3
Cat 6
Cat 8
ML 18
ML 20 |
"Superconductive"
Refers to materials, i.e., metals, alloys or compounds, which can
lose all electrical resistance, i.e., which can attain infinite electrical
conductivity and carry very large electrical currents without Joule
heating.
N.B. - The "superconductive" state of a material is individually
characterised by a "critical temperature", a critical magnetic field,
which is a function of temperature, and a critical current density which
is, however, a function of both magnetic field and temperature.
|
| Cat 6 |
"Super High Power
Laser" ("SHPL")
A "laser" capable of delivering (the total or any portion of) the
output energy exceeding 1 kJ within 50 ms or having an average or CW
power exceeding 20 kW.
|
Cat 1
Cat 2 |
"Superplastic forming"
A deformation process using heat for metals that are normally characterised
by low values of elongation (less than 20%) at the breaking point as
determined at room temperature by conventional tensile strength testing,
in order to achieve elongations during processing which are at least
2 times those values.
|
| Cat 5 |
"Switch fabric"
That hardware and associated "software" which provides the physical
or virtual connection path for in-transit message traffic being switched.
|
| Cat 5 |
"Synchronous digital
hierarchy" ("SDH")
A digital hierarchy providing a means to manage, multiplex and access
various forms of digital traffic using a synchronous transmission format
on different types of mediL The format is based on the Synchronous Transport
Module (STM) which is defined by CCITT Recommendation G.703, G.707,
G.708, G.709 and others yet to published. The first level rate of "SDH"
is 155.52 Mbit/s.
|
| Cat 5 |
"Synchronous optical
network" ("SONET")
A network providing a means to manage, multiplex and access various
forms of digital traffic using a synchronous transmission format on
fibre optics. The format is the North America version of "SDH" and also
uses the Synchronous Transport Module (STM). However, it uses the Synchronous
Transport Signal (STS) as the basic transport module with a first level
rate of 51.81 Mbitls. (The "SONET" standards are being integrated into
those of "SDH").
|
| Cat 6 |
"Systems tracks"
Processed, correlated (fusion of radar target data to flight plan
position) and updated aircraft flight position report available to the
Air Traffic Control centre controllers.
|
| Cat 4 |
"Systolic array computer"
A computer where the flow and modification of the data is dynamically
controllable at the logic gate level by the user.
|
