IL1565
| Electronic computers, related equipment, equipment or systems containing electronic computers, and technology therefor, the following: and specially designed components for such electronic computers and related equipment:
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| (a) analogue computers and related equipment therefor, which are designed or modified for use in airborne vehicles, missiles or space vehicles and rated for continuous operation at temperatures from below 228K (−45°C) to above 328K (+55°C) A
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| except–
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| nor
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| Note
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| For the purposes of paragraph (2) above–
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| 1. | the percentage in sub-paragraph (B)(a) applies to the actual output voltage; all the other percentages apply to full scale, that is, from maximum negative to maximum positive reference voltages;
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| 2. | total errors at 1 kHz for sub-paragraphs (B)(b) and (C)(b) above are to be measured with those resistors incorporated in the inverter, summer or integrator which provide the least error;
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| 3. | total error measurements include all errors of the unit resulting from, for example, tolerances of resistors and capacitors, tolerances of input and output impedances of amplifiers, the effects of loading, the effects of phase shift or the generating of functions.
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| (c) the interconnection of two central processing units by data channels or by use of shared storage to permit one central processing unit to perform other work until the second central processing unit fails, at which time the first central processing unit takes over in order to continue the system’s functioning; or
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| (k) displays or monitors having more than 1,024 resolvable elements in the perpendicular dimension and 1,280 resolvable elements in the other dimension and, except in the case of direct driven video monitors, with more than 256 colours or shades of grey
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| except–
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| 2. monochrome displays for systems specially designed for and limited to graphic arts, desktop publishing, document image publishing (e.g., printing, publishing) which have displays not exceeding 1,200 resolvable elements in the perpendicular dimension and 1,600 resolvable elements in the other dimension;
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| There shall be excluded from head (h)–
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| (h) except in the case of workstations designed for and limited to graphic arts (e.g., printing, publishing), not having both of the following characteristics–
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| (F) related equipment for local area networks, not exceeding a data signalling rate of 20 Mbit/s and having no inter-network gateways, or related equipment specially designed for connecting local area networks within a computer using facility;
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| (A) development, production or use (i.e., installation, operation and maintenance) of electronic computers or related equipment, whether or not such electronic computers or related equipment are specified in this entry
| D |
| except–
(a) technology which is unique to related equipment not specified in this Schedule;
(b) the minimum technical information necessary for the use of electronic computers or related equipment when shipped together with or solely for use with such electronic computers or related equipment; or
(c) the minimum technical information for the production of electronic computers and related equipment not specified in sub-head (h)(A) or related equipment excluded by exception (C) to head (h), being information relating to–
(1) assembling of prefabricated components or sub-assemblies;
(2) loading of basic diagnostic systems software;
(3) performing basic go/no go testing of finished products;
Note:
“assembling” means for the purpose of this exception, the testing, and integrating into finished products, of components and sub-assemblies, including mounting components on to printed circuit boards or into other assemblies.
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| In this entry–
“access rate”–
(a) of an input/output control unit drum or disk drive combination (Rad) means either the access rate of an input/output control unit (Rac) or the sum of the individual access rates of all independent seek mechanisms (Ras), whichever is smaller; Thus: Rad = min (Rac; SUM Ras);
(b) of an input/output control unit (Rac)–
(1) with rotational position sensing (rps), means the sum of the individual access rates of all independent seek mechanisms (Ras) connected to the control unit; Thus: Rac = SUM Ras (with rps);
(2) without rotational position sensing (rps), means the number (C) of independent read/write channels connected to the control unit divided by the least latency time (t1min) of any connected independent seek mechanism;
Thus:
(c) of a seek mechanism (Ras), means the reciprocal of the average access time (taa) of the seek mechanism;
| Thus:
For the purpose of this definition–
“average access time”of a seek mechanism (taa) means the sum of the average seek time (tsa) and the latency time (t1);
Thus: taa = tsa + t1;
“average seek time” (tsa) means the sum of the maximum seek time (tsmax) and twice the minimum seek time (tsmin), divided by three;
Thus:
“maximum seek time” (tsmax)
(1) for fixed head devices, is zero;
(2) for moving head or moving media devices, means the rated time to move between the two most widely separated tracks;
“minimum seek time” (tsmin)
(1) for fixed head devices, is zero;
(2) for moving head or moving media devices, means the rated time to move from one track to an adjacent track.
“latency time” (t1 ) means the rotational period divided by twice the number of independent read/write heads per track;
“analogue computer” means equipment which can, in the form of one or more continuous variables:
(a) accept data;
(b) process data; and
(c) provide output of data;
“associated” with equipment or systems means:
(a) can feasibly be either:
(b) is not essential to the operation of such equipment or systems;
“block move data rate” means the maximum number of pixels which can be moved per second from one location to another in the storage which functions as the frame buffer;
“computer using facility” means the end-user’s contiguous and accessible facilities:
(a) housing the computer operating area and those end-user functions which are supported by the electronic computer and its related equipment; and
(b) not extending beyond 1,500 metres in any direction from the centre of the computer operating area;
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| For the purpose of this definition–
“computer operating area” means the immediately contiguous and accessible area around the electronic computer, where the normal operating, support and service functions take place;
“data device” means equipment capable of transmitting or receiving sequences of digital information;
“data signalling rate” means that rate as defined in ITU Recommendation 53-36, taking into account that, for non-binary modulation, baud and bit per second are not equal. Binary digits for coding, checking and synchronisation functions are included;
NB.: It is either the maximum one-way rate, i.e., the maximum rate in either transmission or reception, whichever is the greater;
“digital computer” means equipment which can, in the form of one or more discrete variables:
(a) accept data;
(b) store data or instructions in fixed or alterable (writable) storage devices;
(c) process data by means of a stored sequence of instructions which is modifiable; and
(d) provide output of data;
NB: Modifications of a stored sequence of instructions include replacement of fixed storage devices, but not a physical change in wiring or interconnections;
“electronic computer” does not include related equipment which contains an electronic computer, but which lacks user-accessible programmability;
“equivalent multiply rate” means the maximum achievable number of multiplication operations which can be performed per second considering that, in the case of simultaneous multiplication operations, all multiplication rates have to be summed in order to arrive at the equivalent multiply rate:
(a) assuming
(1) optimal operand locations in the most immediate storage; and
(2) operand lengths at least 16 bit, or more if this allows for faster operation; and
(b) ignoring
NB: Simultaneous multiplication operations can occur because of:
(a) multiple arithmetic units for operations such as complex multiplication, convolution or recursive filtering;
(b) parallel pipelining;
(c) more than one arithmetic unit in one data processing unit; or
(d) more than one data processing unit in one system.
“fault tolerance” means the ability to perform correctly without human intervention after failure of any assembly, so that there is no single point in the system the failure of which could cause catastrophic failure of the system’s functioning;
“gateway” means the function, realised by any combination of equipment and software, of carrying out the conversion of conventions for representing, processing or communicating information used in one system into the corresponding but different conventions used in another system;
“gross capacity” means the product of:
(a) the maximum number of binary digit (bit) positions per unformatted track; and
(b) the total number of tracks including spare tracks and tracks not accessible to the user;
“hybrid computer” means equipment which can:
(a) accept data;
(b) process data, in both analogue and digital representations; and
(c) provide output of data;
“image digitiser” means a device for directly converting an analogue representation of an image into a digital representation;
“image enhancement” means the processing of externally derived information-bearing images by algorithms such as time compression, filtering, extraction, selection, correlation, convolution or transformations between domains (e.g., fast Fourier transform or Walsh transform). This does not include algorithms using only linear or rotational transformation of a single image, such as translation, feature extraction, registration or false coloration;
“internetwork gateway” means a gateway for two systems which are themselves local area networks, wide area networks or both;
“local area network” means a data communication system which:
(a) allows any number of independent data devices to communicate directly with each other; and
(b) is confined to a geographical area of moderate size (e.g., office building, plant, campus, warehouse);
“main storage” means the primary storage for data or instructions for rapid access by a central processing unit. It consists of the internal storage of a digital computer and any hierarchical extension thereto, such as cache storage or non-sequentially accessed extended storage;
“maximum bit packing density” means the density of recording specified in accordance with the appropriate ANSI or ISO Standard (egANSI X3.14–1979, ISO 1863–1975; ANSI X3.22–1973, ISO 1873–1976; ANSI X3.39–1973, ISO 3788–1976; ANSI X3.48–1977, ISO 3407–1976; ANSI X3.56–1977, ISO 4057–1979; ANSI X3.54–1976);
“maximum bit transfer rate”
(a) of a drum or disk drive (R
| tdmax), means the product of:
(1) the maximum number of binary digit (bit) positions per unformatted track; and
(2) the number of tracks which simultaneously can be read or written, divided by the rotational period;
| ttmax), means the product of:
(1) the maximum bit packing density;
(2) the number of data bits per character (ANSI) or per row (ISO); and
(3) the maximum tape read/write speed;
“most immediate storage” means the portion of the main storage most directly accessible by the central processing unit:
(a) for single level main storage, this is the internal storage;
(b) for hierarchical main storage, this is:
“multi-data-stream processing” means the microprogramme or equipment architecture technique which permits processing two or more data sequences under the control of one or more instruction sequences by means such as:
(a) parallel processing;
(b) structured arrays of processing elements;
(c) Single Instruction Multiple Data (SIMD) operations; or
(d) Multiple Instruction Multiple Data (MIMD) operations;
“net capacity” of a drum, disk or cartridge-type streamer tape drive or a bubble memory, means the total capacity designed to be accessible to the digital computer excluding error control bits;
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| 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 cost of the element for 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;
“real time processing” means processing of data by an electronic computer in response to an external event according to time requirements imposed by the external event;
“related equipment” means the following equipment, contained in or associated with an electronic computer:
(a) equipment for interconnecting analogue computers with digital computers;
(b) equipment for interconnecting digital computers;
(c) equipment for interfacing electronic computers to local area networks or to wide area networks;
(d) communication control units;
(e) other input/output control units;
(f) recording or reproducing equipment; or
(g) displays;
“signal processing” means the processing of externally derived information-bearing signals by algorithms such as time compression, filtering, extraction, selection, correlation, convolution or transformations between domains(eg, fast Fourier transform or fast Walsh transform).
“total processing data rate”–
(a) of a single central processing unit, is its processing data rate;
(b) of multiple central processing units which do not share direct access to a common main storage, is the individual processing data rate of each central processing unit, ie, each unit is separately treated as a single central processing unit as in (a) above;
(c) of multiple central processing units which partially or fully share direct access to a common main storage at any level, is the sum of:
(1) the highest of the individual processing data rates of all central processing units; and
(2) 0.75 times the processing data rate of each remaining central processing unit, sharing the same main storage;
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| assuming the configuration of equipment which would maximize this sum of rates.
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| For the purpose of this definition–
“processing data rate” is the maximum of the floating point processing data rate (Rf) or the fixed point processing data rate (Rx).
NB: The processing data rate of a central processing unit implemented with two or more microprocessor microcircuits, not including any dedicated microprocessor microcircuit used solely for display, keyboard or input/output control, is the sum of the individual processing data rates of all these microprocessor microcircuits.
“floating point processing data rate” (Rf) is the sum of:
(1) 0.85 times the number of bits in a fixed point instruction (nix)or 0.85 times the number of bits in a floating point instruction (nif), if no fixed point instructions are implemented;
(2) 0.15 times the number of bits in a floating point instruction (nif);
(3) 0.40 times the number of bits in a fixed point operand (nox) or 0.40 times the number of bits in a floating point operand (nof), if no fixed point instructions are implemented; and
(4) 0.15 times the number of bits in a floating point operand (nof);
divided by the sum of:
(1) 0.85 times the execution time for a fixed point addition (tax) or for a floating point addition (taf), if no fixed point instructions are implemented;
(2) 0.09 times the execution time for a floating point addition (taf); and
(3) 0.06 times the execution time for a floating point multiplication (tmf) or for the fastest available subroutine (tmsub) to simulate a floating point multiplication instruction, if no floating point multiplication instructions are implemented;
Thus:
or if no fixed point instructions are implemented, then:
or if no floating point multiplication instructions are implemented (tmf = tmsub) then:
NB: If a digital computer has neither floating point addition nor floating point multiplication instructions, then its floating point processing data rate is equal to zero;
“fixed point processing data rate” (Rx) is the sum of:
(1) 0.85 times the number of bits in a fixed point addition instruction (niax);
(2) 0.15 times the number of bits in a fixed point multiplication instruction (nimx); and
(3) 0.55 times the number of bits in a fixed point operand (nox);
divided by the sum of:
(1) 0.85 times the execution time for a fixed point addition (tax); and
(2) 0.15 times the execution time for a fixed point multiplication (tmx) or for the fastest available subroutine (tmsub) to simulate a fixed point multiplication instruction if no fixed point multiplication instructions are implemented;
Thus:
or if no fixed point multiplication instructions are implemented (tmx = tmsub), then:
NB: If a digital computer has neither fixed point addition nor fixed point multiplication instructions, then its fixed point processing data rate is equal to zero.
“number of bits” in a:
means the number of bits in the appropriate shortest single fixed or floating point instruction length which permits full direct addressing of the main storage;
NB:1. When multiple instructions are required to simulate an appropriate single instruction, the number of bits in the above instructions is 16 bit plus the number of bits (biax, bimx, biaf, bimf) which permits full direct addressing of the main storage.
Thus: niax = 16 + biax;
nimx = 16 + bimx
niaf = 16 + biaf
nimf = 16 + bimf
NB:2. If the addressing capability of an instruction is expanded by using a base register, then the number of bits in an instruction, fixed or floating point, addition or multiplication, is the number of bits in the instruction with the standard address length including the number of bits necessary to use the base register.
“number of bits in a fixed point operand” (nox) is
(a) the shortest fixed point operand length; or
(b) 16 bit;
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| whichever number is higher;
“number of bits in a floating point operand” (nof) is
(a) the shortest floating point operand length; or
(b) 30 bit;
whichever number is higher;
and for the purpose of these definitions
“execution time” is
(a) the time certified or openly published by the manufacturer for the execution of the fastest appropriate instruction under the following conditions:
(1) no indexing or indirect operations are included;
(2) the instruction is in the most immediate storage;
(3) one operand is in the accumulator or in a location of the most immediate storage which is acting as the accumulator;
(4) the second operand is in the most immediate storage; and
(5) the result is left in the accumulator or the same location in the most immediate storage which is acting as the accumulator;
(b) if only the maximum and minimum execution times of the instructions are published, the sum of:
divided by three;
Thus:
(t stands for any of the values tax, taf, tmx or tmf);
(c) for central processing units which simultaneously fetch more than one instruction from one storage location, the average of the execution times when executing instructions fetched from all possible locations within the stored word;
(d) if the longest fixed point operand length is smaller than 16-bit, the time required for the fastest available subroutine to ssimulate a 16 bit fixed point operation;
Note:1. If the addressing capability of an instruction is expanded by using a base register, then the execution time shall include the time for adding the content of the base register to the address part of the instruction.
2. When calculating processing data rate for computers with cache sizes smaller than 64 kbytes, the execution time of the appropriate instructions shall be calculated as follows: (cache hit rate) × (execution time when both instruction and operand are in cache storage) + (1 − cache hit rate) × (execution time when neither instruction nor operand are in cache storage),
“total transfer rate”–
(a) of input/output control unit drum, disk or cartridge-type streamer tape drive combinations (Rtdtot), is the sum of the individual transfer rates of all input/output control unit drum, disk or cartridge-type streamer tape drive combinations (Rtd) provided with the system which can be sustained simultaneously, assuming the configuration of equipment which would maximise this sum of rates;Thus: Rtdtot = SUM Rtd
(b) of input/output control unit magnetic tape drive combinations (Rtttot) including cartridge tape streamer tape drive combinations, means the sum of the individual transfer rates of all input/output control unit magnetic tape drive combinations (Rtt) provided with the system which can be sustained simultaneously, assuming the configuration of equipment which would maximize this sum of rates; Thus: Rtttot = SUM Rtt.
(c) of input/output or communication control unit directly connected data channel combinations, means the sum of the individual transfer rates of all data channels provided with the system which can be sustained simultaneously, assuming the configuration of equipment which would maximize this sum of rates.
For the purpose of this definition,
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| Thus: Rtc = C.Rtsmaxmax (with rps);
(without rps)
(3) of an independent seek mechanism (Rts), is the product of:
(A) the maximum bit transfer rate (Rtsmax); and
(B) the rotational period (tr);
divided by the sum of:
(A) the rotational period (tr);
(B) the minimum seek time (tsmin); and
(C) the latency time (t1);
Thus:
(4) of an input/output control unit cartridge-type streamer or magnetic tape drive combination (Rtt), is the product of:
Thus: Rtt = C.Rttmaxmax
“minimum seek time” (tsmin)–
(1) for fixed head devices, is zero; or
(2) for moving head or moving media devices, is the rated time to move from one track to an adjacent track;
“latency, time” (t1 ) is the rotational period divided by twice the number of independent read/write heads per track;
“user-accessible microprogrammability” means the facility allowing a user to insert, modify or replace microprogrammes;
“user-accessible programmability” means the facility allowing a user to insert, modify or replace programmes by means other than:
(a) a physical change in wiring or interconnections; or
(b) the setting of function controls including entry of parameters;
“wide area network” means a data communication system which:
(a) allows an arbitrary number of independent data devices to communicate with each other;
(b) may include local area networks; and
(c) is designed to interconnect geographically dispersed facilities.
Any term used in this entry shall bear the meaning it has in entry IL1566 in this Group.
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IL1566
| Software and technology therefor, the following:
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| except application software designed for and limited to:
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| (A) accounting, general ledger, inventory control, payroll, accounts receivable, personnel records, wages calculation or invoice control;
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| except
(a) specially designed software in machine executable form for digital computers and related equipment therefor which are excluded by exception (G) or (H) to head (h) of entry IL1565;
(b) software for equipment specified in paragraph (A)(c) or (m) of head (h) of entry IL1565 unless the software performs:
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| except simple debugging application software, such as mapping, tracing, check-point/restart, breakpoint, dumping and the display of the storage contents or their assembly language equivalent;
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| (B) artificial intelligence software, including expert system software, which enables a digital computer to perform functions that are normally associated with human perception and reasoning or learning
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| except software to adapt between two digital computers not specified in entry IL1565.
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| (a) for flexible manufacuring units (FMUs) which include equipment described in (b)(1) and (b)(2) of the definition of flexible manufacturing unit below; and
(b) capable of generating or modifying, in real time processing, programmes or data by using the signals obtained simultaneously by means of at least two detection techniques, such as:
(1) machine vision (optical ranging);
(2) infrared imaging;
(3) acoustical imaging (acoustical ranging);
(4) tactile measurement;
(5) inertial positioning;
(6) force measurement;
(7) torque measurement;
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| (c) Technology applicable to the development, production or use (i.e. installation, operation and maintenance) of software, whether or not the software is specified in this entry
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| There shall be excluded from this entry–
1. software not exceeding 5,000 statements in source language, excluding data, provided that:
(a) the software is neither designed nor modified for use as a module of a larger software module or system which in total exceeds this limit; and
(b) the software is not specified in sub-head (b)(5) above;
2. software initially exported to a country specified in Schedule 2 to this Order prior to 1st January, 1984, provided that:
(a) the software is identical to and in the same language form (source or object) as that initially exported, allowing minor updates for the correction of errors which do not modify the initially exported functions;
(b) the accompanying documentation does not exceed the level of the initial export; and
(c) the software is exported to the same destination as the initial export;
3. the minimum technical information for the use (i.e. installation, operation and maintenance) of software licensed for export, when shipped together with or solely for use with such software; 5.
5. software which is either:
In this entry:
“adaptive control” means a control system that adjusts the response from conditions detected during the operation;
“application software” means software other than development systems, diagnostic systems, maintenance systems, operating systems and programming systems not falling within any of the other defined categories of software;
“cross-hosted programming systems” means programming systems which produce programmes for a model of electronic computer different from that used to run the programming system, that is, they have code generators for equipment different from the host computer;
“database” means a collection of data for one or more particular applications, which is physically located and maintained in one or more electronic computers or related equipment;
“database management systems” means application software to manage and maintain a database in one or more prescribed logical structures for use by other application software independent of the specific methods used to store or retrieve the database;
“data device” means equipment capable of transmitting or receiving sequences of digital information;
“development systems” means software to develop or produce software, including software to manage those activities. Examples of a development system are programming support environments, software development environments and programmer-productivity aids;
“diagnostic systems” means software to isolate or detect software or equipment malfunctions;
“distributed database” means a database which is physically located and maintained in part or as a whole in two or more interconnected electronic computers or related equipment, so that inquiries from one location can involve database access in other interconnected electronic computers or related equipment;
“flexible manufacturing unit” (FMU), (sometimes also referred to as flexible manufacturing system (FMS) or flexible manufacturing cell (FMC)) means a combination of at least:
“generally available to the public” means
(a) available at retail selling points, other than those specializing in selling electronic computers to the general public in model series which are not excepted by paragraph (C) to head (h) of entry IL1565 in this Group; and
(b) sold from stock by means of:
(1) over-the-counter transactions;
(2) mail order transactions;
(3) telephone call transactions;
“high-level language” means a programming language that does not reflect the structure of any one given electronic computer or that of any one given class of electronic computers;
“maintenance systems” means software to:
“on-line updating” means processing in which the contents of a database can be amended within a period of time useful to interact with an external request;
“operating systems” means software to control:
“programming systems” means software to convert a convenient expression of one or more processes (source code or source language) into equipment executable form (object code or object language);
“self-hosted software for programming systems” means software to produce programmes for the same model of electronic computer as that used to run the programming system, ie, they only have code generators for the host computer;
“standard commercially available” means for software that which is:
(a) commonly supplied to general purchasers or users of equipment in countries specified in Schedule 2 to this Order, but not precluding the personalization of certain parameters for individual customers wherever located;
(b) designed and produced for civil applications;
(c) not designed or modified for any digital computer which is part of a digital computer series designed and produced in a country specified in Schedule 2; and
(d) supplied in a commonly distributed form.
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| Any term used in this entry shall bear the meaning it has in entry IL1565 in this Group.
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IL1567
| Stored-programme-controlled, communication switching equipment or systems and technology therefor, the following: and specially designed components therefor and specially designed ODMA software for the use of such equipment or systems–
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| except data (message) switching equipment or systems, provided that–
(1) the equipment or systems are designed for fixed civil use according to the requirements of either:
(A) CCITT Recommendations F.1 to F.79 for store-and-forward systems (Volume II–Fascicle II.4, VIIth plenary assembly,10th–21st November 1980); or
(B) ICAO Recommendations for store-and-forward civil aviation communication networks (Annex 10 to the Convention on International Civil Aviation, including all amendments agreed up to and including 14th December 1981, published by ICAO);
(3) the maximum data signalling rate of any circuit does not exceed 9,600 bit/s;
(4) the equipment or systems do not contain digital computers or related equipment specified in–
(A) head (f) of entry IL1565 in this Group; or
(B) paragraphs (a), (b) or (d) to (j) (inclusive) of sub-head (h)(A) of entry IL1565;
(5) the software supplied:
(A) is limited to the minimum specially designed operating systems, diagnostic systems, maintenance systems or application software necessary for the installation, operation and maintenance of the equipment and systems and is in machine executable form; and
(B) does not include software–
(a) specified in entry IL1527 in Group 3F, in sub-head (a)(5) in entry IL1566 in this Group or in entry ML11 in Group 1, or
(b) that permits user-modification of generic software or its associated documentation; and
(6) the equipment or systems are designed for installation by the user without support from the supplier;
(b) Communication equipment or systems for stored-programme-controlled circuit switching
| W |
| except–
(1) key telephone systems, provided that–
(A) access to an external connection is obtained by pressing a special button (key) on a telephone, rather than by dial or key-pad as on a PABX;
(B) they are not designed to be upgraded for use as PABXs;
(C) the software supplied:
(a) is limited to the minimum specially designed operating systems, diagnostic systems, maintenance systems or application software necessary for the installation, operation and maintenance of the equipment or systems, and is in machine-executable form; and
(b) does not include software:
(1) specified in entry IL1527 in Group 3F, in sub-head (a)(5) in entry IL1566 in this Group or in entry ML11 in Group 1, or
(2) that permits user-modification of generic software or its associated documentation; and
(D) the equipment or systems are designed for installation by the user without support from the supplier;
(2) stored-programme-controlled circuit switching equipment or systems, provided that–
(A) the equipment or systems are designed for fixed civil use in stored-programme-controlled telegraph circuit switching for data;
(C) the equipment or systems do not contain digital computers or related equipment specified in head (f) of entry IL1565 or in paragraphs (a) to (j) inclusive or paragraph (m) of sub-head (h)(A) of entry IL1565;
(D) the equipment or systems do not have either of the following characteristics:
(a) multi-level call pre-emption (including over-riding or seizing of busy subscriber lines, trunk circuits or switches), other than for single-level call pre-emption (such as executive override); or
(b) common channel signalling;
(E) the maximum internal bit rate per channel does not exceed 9,600 bit/s;
(F) the telegraph circuits (whether or not operating as telephone circuits) are capable of carrying any type of telegraph or telex signal compatible with a voice channel bandwidth of 3,100 Hz;
(G) the software supplied:
(a) is limited to the minimum specially designed operating systems, diagnostic systems, maintenance systems or application software necessary for the installation, operation and maintenance of the equipment or systems and is in machine-executable form; and
(b) does not include software:
(1) specified in entry IL1527 in Group 3F or in sub-head (a)(5) in entry IL1566 in this Group or in entry ML11 in Group 1;
(2) that permits user-modification of generic software or its associated documentation;
(H) the equipment or systems are designed for installation by the user without support from the supplier;
(3) stored-programme-controlled telephone circuit switching equipment or systems, provided that–
(A) the equipment or systems are designed for fixed civil use as space-division analogue exchanges or time-division analogue exchanges which are PABXs;
(B) the equipment or systems do not contain digital computers or related equipment specified in head (f) of entry IL1565 in this Group, or in paragraphs (a) to (j) inclusive or paragraph (m) of sub-head (h)(A) of entry IL1565;
(C) any communication channels or terminal devices used for administrative and control purposes:
(a) can only be used for those purposes; and
(b) do not exceed a maximum data signalling rate of 9,600 bits;
(D) voice channels are limited to 3,100 Hz;
(F) the equipment or systems do not have:
(a) multi-level call pre-emption (including over-riding or seizing of busy subscriber lines, trunk circuits or switches) other than for single-level call pre-emption (such as executive override); or
(b) common channel signalling;
(G) the software supplied:
(a) is limited to the minimum specially designed operating systems, diagnostic systems, maintenance systems or application software necessary for the installation, operation and maintenance of the equipment or systems; and is in machine-executable form; and
(b) does not include software:
(1) specified in entry IL1527 in Group 3F, or in sub-head (a)(5) in entry IL1566 in this Group or in entry ML11 inGroup 1; or
(2) that permits user-modification of generic software or its associated documentation; and
(H) the equipment or systems are designed for installation by the user without support from the supplier;
(4) stored-programme-controlled, telephone circuit switching equipment or systems, provided that–
(A) the equipment or systems are designed for fixed civil use as space-division digital exchanges or time-division digital exchanges, which are PABXs;
(B) the equipment or systems do not have more than 512 ports;
(C) the equipment or systems do not support any form of Integrated Services Digital Networks;
(D) the equipment or systems do not contain digital computers or related equipment specified in head (f) of entry IL1565 in this Group or in paragraphs (a) to (j) inclusive or paragraph (m) of sub-head (h)(A) of entry IL1565;
(E) the PABXs do not have any of the following characteristics:
(a) multi-level call pre-emption (including over-riding or seizing of busy subscriber lines, trunk circuits or switches) other than single-level call pre-emption (such as executive over-ride);
(b) common channel signalling;
(c) dynamic adaptive routing;
(d) digital synchronisation circuitry which uses equipment specified in head (d) of entry IL1529 in Group 3F;
(f) centralised network control which is:
(A) based on network management protocol; and
(B) capable of receiving data from the nodes and processing such data to control traffic and directionalise paths;
(F) any communication channels or terminal devices used for administrative and control purposes:
(a) can only be used for those purposes; and
(b) do not exceed 9,600 bit/s;
(G) the software supplied–
(a) is limited to the minimum specially designed operating systems, diagnostic systems, maintenance systems or application software necessary for the installation, operation and maintenance of the equipment or systems and is in machine-executable form;
(b) does not include software:
(1) specified in entry IL1527 in Group 3F, or in sub-head (a)(5) in entry IL1566 in this Group or in entry ML11 inGroup 1, or
(2) that permits user-modification of generic software or its associated documentation; and
(H) the equipment or systems are designed for installation by the user without support from the supplier;
(c) Technology applicable to the development, production, installation, operation or maintenance of stored-programme-controlled, communication switching equipment or systems (including equipment or systems referred to in the exceptions to heads (a) and (b) above, if the technology exceeds the minimum technical information necessary for the installation, operation and maintenance of such equipment or systems)
| D |
| In this entry–
“affiliated equipment” means the following equipment:
(a) input/output (I/O) control units;
(b) recording or reproducing equipment;
(c) displays; or
(d) other peripheral equipment;
“common channel signalling” means 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;
“communication channel” means the transmission path or circuit including the terminating transmission and receiving equipment (modems) for transferring digital information between distant locations;
“data device” means equipment capable of transmitting or receiving sequences of digital information;
“data (message) switching” means a technique, including store-and-forward or packet switching, for:
(a) accepting data groups (including messages, packets or other digital or telegraphic information groups which are transmitted as a composite whole);
(b) storing (buffering) data groups as necessary;
(c) processing part or all of the data groups, as necessary, for the purpose of:
(1) control (routing, priority, formating, code conversion, error control, retransmission or journaling);
(2) transmission; or
(3) multiplexing; and
(d) retransmitting processed data groups when transmission or receiving facilities are available;
“data-signalling rate” means the maximum rate in either transmission or reception, taking into account that, for non-binary modulation, baud and bit per second are not equal; (binary digits for coding, checking, and synchronization functions are included);
“digital computer” means equipment which can, in the form of one or more discrete variables:
(a) accept data;
(b) store data or instructions in fixed or alterable storage devices;
(c) process data by means of a stored sequence of instructions which is modifiable; and
(d) provide output of data;
“fast select” means a facility applicable to virtual calls, which allows data terminal equipment to expand the possibility of transmitting data in call set-up and clearing packets beyond the basic capabilities of a virtual call;
“local area network” means a data communication system which:
(a) allows any number of independent data devices to communicate directly with each other; and
(b) is confined to a geographical area of moderate size (such as an office building, a plant, a campus, or a warehouse);
“PABX” (private automatic branch exchange) means an automatic telephone exchange (whether or not incorporating a position for an attendant) designed to provide access to the public network and serving extensions within an institution;
“packet” means a group of binary digits (including call control signals and data) which is switched as a composite whole, the call control signals, data and if present error control information being arranged in a specified format;
“packet-mode operation” means the transmission of data by means of addressed packets, whereby a transmission channel is occupied for the duration of the packet only and the channel is then available for use by packets being transferred between different data terminal equipments; (in certain data communication networks the data may be formated into a packet or divided and then formated into a number of packets, either by the data terminal equipment or by equipment within the network, for transmission and multiplexing purposes);
“space-division analogue exchange” means a space-division exchange, which uses an analogue (including sampled analogue) signal within the switching matrix, and which can route digital signals, subject to the bandwidth limitations of the equipment; (such exchanges in public networks commonly pass digital data rates of several kilobit per second per voice channel of 3,100 Hz);
“space-division digital exchange” means a space-division exchange, which accommodates the transmission through the switching matrix of digital signals requiring a bandwidth wider than a voice channel of 3,100 Hz;
“space-division exchange” means an exchange in which different streams of data or voice signals are routed through the switching matrix along physically different paths; (the signal being routed through the matrix may be analogue, such as conventional amplitude-modulation, or pulse amplitude-modulation, or digital, such as pulse code modulation, delta modulations or data);
“stored-programme-controlled circuit switching” means a technique
(a) for establishing, on demand and until released, a direct (space-division switching) or logical (time-division switching) connection between circuits, and
(b) which is based on switching control information derived from any source or circuit and processed according to the stored programme by one or more electronic computers;
“stored-programme-controlled telegraph circuit switching” means techniques essentially identical to those for stored-programme-controlled telephone circuit switching, for establishing connections between telegraph (for example telex) circuits based solely on a subscriber type of signalling information;
“stored-programme-controlled telephone circuit switching” means a technique
(a) for establishing within an exchange, on demand and until released, an exclusive direct (space-division switching) or logical (time-division switching) connection between calling and called telephone circuits;
(b) based solely on a subscriber type of telephone signalling information derived from the calling circuit; and
(c) processed according to the stored programmes by one or more electronic computers;
for this purpose the telephone circuits may carry any type of signal (including telephone or telex), comparable with a voice channel bandwidth of 3,100 Hz or less;
“terminal device” means a data device which:
for the purpose of this definition a combination of such equipment (such as a combination of printer and paper tape punch or reader) which is connected to a single data channel or communications channel, constitutes a single terminal device;
“terminal exchange” means an exchange which performs the function of one or more of the following–
(a) a local exchange used for terminating subscribers' lines;
(b) a remote switching unit which performs some functions of a local exchange and operates under a measure of control from the parent exchange; or
(c) a local exchange which is used as a switching point for traffic between subordinate local exchanges (and which is generally 2-wire but may also provide 4-wire connections to and from the national long-distance network);
“time-division analogue exchange” means a time-division exchange in which the parameter associated with an individual segment of a stream of data or voice signals varies continuously;
“time-division digital exchange” means a time-division exchange in which the parameter associated with an individual segment of a stream of data or voice signals is one of the finite number of digitally coded values;
“time-division exchange” means an exchange in which segments of different streams of data or voice are interleaved in time and routed through the switching matrix along a common physical path; (the matrix may also include one or more stages of space-division switching; and the signal being routed though the matrix may be analogue (such as pulse amplitude modulation) or digital (such as pulse code modulation, delta modulation or data);
“total data signalling rate” means the sum of the individual data signalling rates of all communication channels which have been provided with the system and can be sustained simultaneously, assuming a configuration of equipment that would maximize this sum of rates;
“transit exchange” means an exchange that performs the function of a terminal exchange or one or both of the following:
(a) a switching point for traffic between other exchanges in the national network (otherwise known as a “trunk exchange” and generally 4-wire); or
(b) a 4-wire exchange serving outgoing, incoming or transit international calls;
“trunk circuit” means a circuit with associated equipment terminating in two exchanges.
| |
| Any term used in this entry shall bear the meaning it has in entry IL1565 or entry IL1566 in this Group.
| |
IL1568
| Analogue-to-digital and digital-to-analogue converters, position encoders and transducers, the following: and specially designed components and test equipment therefor–
| |
| | |
| | C |
| | C |
| or
| |
| | C |
| | |
| | |
| | C |
| or
| |
| | C |
| or
| |
| | |
| | C |
| or
| |
| | C |
| (c) Solid-state synchro-to-digital or digital-to-synchro converters and resolver-to-digital or digital-to-resolver converters (including multipole resolvers) having a resolution of better than ± 1 part in 5,000 per full synchro revolution for single speed synchro systems or ± 1 part in 40,000 for dual speed systems
| C |
| | |
| | |
| | C |
| | C |
| | C |
| | C |
| In this entry–
| |
| “settling-time” means the time required for the output to come within one half bit of the final value when switching between any two levels of the converters.
| |
PL7038
| Electrical input type analogue-to-digital converter printed circuit boards or modules, having all the following characteristics
| A |
| | |
| | |
| | |
IL1571
| Magnetometers, magnetometer systems and related equipment, the following: and specially designed components therefor–
| |
| | C |
| | C |
| | C |
| In this entry–
| |
| “sensitivity” means the visually recognized minimum sinusoidal signal in the frequency range of 0.025 Hz to 1.5 Hz when signal-to-noise ratio is higher than 1;
| |
| “secially designed components” includes non-magnetic pumping lamps and heating coils, cryogenic magnetic componentry, enhanced resonance gases, and any form of dynamic signal-processing gradient compensation provided as part of, or designed for use with, magnetometers specified in this entry. Enhanced resonance gases are gases of isotopes of cesium, rubidium and other metals which exhibit very sharp bands of response to pumping frequencies in optically pumped magnetometers;
| |
| “magnetometer systems” use magnetic sensors, including those designed to operate at cryogenic temperatures, compensation systems, displays, recorders and associated electronics for signal processing, target parameter detection, gradient compensation and dynamic range control.
| |
IL1572
| Recording or reproducing equipment, recording media and technology, the following: and specially designed components, accessories and software therefor–
| C |
| except–
(i) equipment specially designed for–
(1) audio programmes on tape or disk;
(2) analogue recording or reproducing of video programmes on tape or disk, save magnetic heads mounted on servo-mechanisms which include piezoelectric transducers and have a gap width less than0.75 micrometre; or
(3) digital reproducing (ie play-back only) of video programmes from tape or disk;
(ii) equipment specially designed to use magnetic card, tag, label or bank cheque recording media with a magnetic surface area not exceeding85 cm2 ;
(iii) analogue magnetic tape recorders, including equipment permitting the recording of digital signals (eg using a high density digital recording (HDDR) module), having all of the following characteristics–
(a) bandwidth at maximum speed not exceeding 300 kHz per track;
(b) recording density not exceeding 2,000 magnetic flux sine waves per linear cm per track;
(c) not including recording or reproducing heads designed for use in equipment with characteristics superior to those defined in paragraph (a) or (b) above;
(d) tape speed not exceeding 155 cm/s;
(e) number of recording tracks, excluding audio voice track, not exceeding 28;
(f) start-stop time not less than 25 ms;
(g) equipped with tape-derived (off-tape) servo speed control and with a time displacement (base) error, measured in accordance with applicable IRIG or EIA documents, of no less than ±1 microsecond;
(h) using only direct or FM recording;
(i) not ruggedized for military use;
(j) not rated for continuous operation in ambient temperatures from below 233K to above 328K (from below −40°C to above + 55°C); and
(k) not specially designed for underwater use;
(iv) digital recording or reproducing equipment having all of the following characteristics–
(a) cassette/cartridge tape drives or magnetic tape drives which do not exceed;
(b) not ruggedized for military use;
(c) not specially designed for underwater use; and
(d) not rated for continuous operation in ambient temperatures from below 233K to above 328K (from below −40°C to above + 55°C).
| C |
| except–
(i) equipment specially designed for the production of audio or video disk masters for the replication or entertainmentor education-type disks;
(ii) facsimile equipment such as used for commercial weather imagery and commercial wire photos and text;
(iii) consumer-type reproducers for audio or video disks employing non-erasable media;
(iv) equipment specially designed for gravure (printing plate) manufacturing.
| C |
| | C |
| except–
(i) magnetic tape having all of the following characteristics–
(a) specially designed for television recording and reproduction or for instrumentation;
(b) being a standard commercial product;
(c) not designed for use in satellite applications;
(d) been in use in quantity for at least two years;
(e) a tape width not exceeding 25.4 mm;
(ee) a tape length not exceeding 6,000 m;
(f) a magnetic coating thickness not less than;
(1) 2.0 micrometres (0.079 mil) if the tape length does not exceed 1,450 m; or
(2) 5.0 micrometres (0.1975 mil) if the tape length does not exceed 6,000 m;
(g) a magnetic coating material consisting of doped or undoped gamma-ferric oxide or chromium dioxide;
(h) a base material consisting only of polyester;
(i) a rated intrinsic coercivity not exceeding 64 kA/m (804 oersted); and
(j) a retentivity not exceeding 0.16 T (1,600 gauss);
(ii) magnetic tape having all of the following characteristics–
(a) specially designed for television recording and reproduction or for instrumentation;
(b) being a standard commercial product;
(c) having either of the following sets of characteristics–
(1)
(A) a tape width not exceeding 50.8 mm;
(B) not designed for use in satellite applications;
(C) a magnetic coating material consisting of doped or undoped gamma-ferric oxide or chromium dioxide;
(D) a rated intrinsic coercivity not exceeding 64 kA/m (804 oersted); and
(E) a tape length not exceeding 1,096 m;
or
(2)
(A) a tape width not exceeding 25.4 mm;
(B) a magnetic coating material consisting of chromium dioxide;
(C) a base material consisting only of polyester; and
(D) a rated intrinsic coercivity not exceeding 60 kA/m (750 oersted);
(iii) video or audio magnetic tape having either of the following sets of characteristics–
(a)
(1) being contained in a cassette;
(2) specially designed for television or audio recording and reproduction;
(3) being a standard commercial product;
(4) a rated intrinsic coercivity not exceeding 128 kA/m (1,600 oersted);
(5) a retentivity not exceeding 0.30 T (3,000 gauss);
(6) a tape length not exceeding 650 m; and
(7) a magnetic coating thickness not less than 2.0 micrometres;
or
(b)
(1) a magnetic coating material consisting of undoped gamma-ferric oxide;
(2) a rated intrinsic coercivity not exceeding 28 kA/m (350 oersted);
(3) a tape width not exceeding 50.8 mm; and
(4) a base material consisting only of polyester;
(iv) computer magnetic tape having all of the following characteristics–
(a) designed for digital recording and reproduction;
(b) a magnetic coating certified for a maximum packing density of 2,460 bit per cm or 3,560 flux changes per cm along the length of the tape;
(c) a magnetic coating thickness not less than 3.6 micrometre;
(d) a tape width not exceeding 25.4 mm;
(e) a tape length not exceeding 1,100 m; and
(f) a base material consisting only of polyester;
(v) computer flexible disk cartridges having both of the following characteristics–
(a) designed for digital recording and reproduction; and
(b) not exceeding a gross capacity of 33 million bit;
(vi) rigid magnetic disk recording media having all of the following characteristics–
(a) being a standard commercial product;
(b) non servo-written;
(c) a packing density not exceeding 866 bit per cm;
(d) not exceeding 80 tracks per cm; and
(e) conforming to any of the following specifications:
(1) unrecorded single disk cartridges (front loading (2315-type)) designed to meet ANSI X3.52–1976;
(2) unrecorded single disk cartridges (top loading (5440-type)) designed to meet International Standard ISO 3562–1976;
(3) unrecorded six-disk packs (2311 type) designed to meet ANSI X3.46–1974 or International Standard ISO 2864–1974(E); or
(4) unrecorded eleven-disk packs (2316 type) designed to meet ANSI X3.58–1977 or International Standard ISO 3564–1976.
| D |
| except–
(i) technology, which is unique to equipment excluded by any exception (i)(1), (i)(2) or (ii) or head (a), or excluded from heads (b) or (c) of this entry, other than technology for the design or production of–
(a) cylindrical structures used to record or reproduce video signals in a helical scan system recorder or reproducer; or
(b) recorded alignment tapes used in the production of recording or reproducing equipment;
(ii) the minimum technology necessary for the use of equipment which is excluded under this entry.
| |
| | |
| | D |
| | D |
| | |
| | D |
| | D |
| | D |
| In this entry–
| |
| “recording media” means all types and forms of specialised media used in recording techniques, including but not limited to tapes, drums, disks and matrices;
| |
| | |
| | |
| | |
IL1573
| Superconductive electromagnets and solenoids, the following: except when specially designed for magnetic resonance imaging (MRI) medical equipment–
| |
| | C |
| except those rated for both–
| |
| | |
| | |
| | C |
| | |
| | |
| | |
| In this entry “overall current density” means the total number of ampere-turns in the coil (ie the sum of the number of turns multiplied by the maximum current carried by each turn) divided by the total cross-section of the coil (comprising the superconducting filaments, the metallic matrix in which the superconducting filaments are embedded, the encapsulating material, any cooling channels, etc.).
| |
IL1574
| Electronic devices, circuits and systems containing components manufactured from superconductive materials, and specially designed for operation at temperatures below the critical temperature of at least one of their superconductive constituents performing functions such as the following–
| C |
| | |
| There shall be excluded from this entry equipment specially designed for civil research on materials characterisation which contain superconducting quantum interference devices (SQUIDS), and which have all of the following characteristics–
| |
| | |
| | |
| | |
| Note:
| |
| This entry includes Josephson-effect devices and superconducting quantum interference devices (SQUIDS).
| |
| In this entry–
| |
| the “critical temperature” (sometimes referred to as the transition temperature) of a specific superconductive material means the temperature at which the material loses all resistance to the flow of direct current;
| |
| “superconductive” refers to materials (ie metals, alloys or compounds) which can lose all electrical resistance (ie which can attain infinite electrical conductivity and carry very large electrical currents without Joule heating). 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 a function of both magnetic field and temperature.
| |
IL1585
| Cameras, components and photographic recording media therefor, the following–
| |
| | |
| (1) Cameras in which the film is continuously advanced throughout the recording period, and which are capable of recording at framing rates exceeding 13,150 frames per second, using any camera and film combination from the standard 8 mm to the 90 mm size inclusive
| C |
| | C |
| (b) Mechanical high speed cameras in which the film does not move, and which are capable of recording at rates exceeding 1,000,000 frames per second for the full framing height of standard 35 mm wide photographic film, or at proportionately higher rates for lesser frame heights, or at proportionately lower rates for greater frame heights
| C |
| | C |
| | C |
| | C |
| | |
| | C |
| | C |
| | C |
| | C |
| | |
| | |
| | C |
| (i) Films, the following–
| |
| | C |
| | C |
| | C |
| In this entry–
| |
| | |
IL1586
| Acoustic wave devices, the following: and specially designed components therefor–
| |
| (a) Surface acoustic wave and surface skimming (shallow bulk) acoustic wave devices which permit direct processing of signals, (including convolvers, correlators (fixed, programmable and memory), oscillators, bandpass filters, delay lines (fixed and tapped) and non-linear devices) having either of the following characteristics–
| |
| | C |
| | |
| | C |
| | C |
| | C |
| | C |
| | C |
| (c) Acousto-optic signal-processing devices employing an interaction between acoustic waves (bulk wave or surface wave) and light waves which permit the direct processing of signals or images, including spectral analysis, correlation and convolution
| C |
| In this entry “acoustic wave devices” means signal processing devices employing elastic waves in materials such as lithium niobate, lithium tantalate, bismuth germanium oxide, silicon, quartz, zinc oxide, aluminium oxide (sapphire), gallium arsenide and alpha-aluminium phosphate (berlinite).
| |
IL1595
| Gravity meters (gravimeters), gravity gradiometers and specially designed components therefor
| A |
| except–
| |
| | |
| | |
| | |
| | |
| | |
| | |
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