| 1 | 1a. Produce electronic engineering drawings using computer aided techniques | 1.1 | Prepare the CAD system for operation, by carrying out all of the following: • check that all the equipment is correctly connected and is in a safe and usable condition (cables undamaged, correctly connected, safely routed) • power up the equipment and activate the drawing software • set up the drawing system to be able to produce the drawing to the appropriate scale • set up and check that all peripheral devices are connected and correctly operating (such as keyboard, mouse, light pen, digitiser/tablet, scanner, printer, plotter) • set the drawing datum at a convenient point (where applicable) • set up drawing parameters to include layers, line types, colour, text styles to company procedures or to suit the drawing produced • create a drawing template to the required standards, which includes all necessary detail (such as title, drawing number, scale, material, date, etc) |
| 1.2 | Carry out all of the following before producing the engineering drawing: • ensure that data and information is complete and accurate • review the data and information to identify the drawing requirements • recognise and deal with problems (information based and technical) |
| 1.3 | Use three of the following to obtain the necessary data to produce the required drawings: • drawing brief/request • change order/modification request • manuals • calculations • sketches • specifications • electrical regulations • previous drawings/designs • other available data • standards reference documents (such as current carrying capacity of cables, electronic component catalogues) • notes from meetings/discussions |
| 1.4 | Produce drawings that are sufficiently and clearly detailed |
| 1.5 | Take into account eight of the following design features, as appropriate to the drawing being produced: • uses an appropriate type of circuit (such as digital, analogue, hybrid) • physical dimensions of the circuit • position of circuit elements/components • function • connectors/test points access • connections between components • component orientation • special labels (such as orientation reference points) • types of component to be used • lifetime cost of the product • tolerances • aesthetics • interfaces • safety • power supplies • uses appropriate technology of circuit design (such as single sided, double sided, multi-layer, flexi-rigid) • meets signal integrity parameters (such as capacitance, inductance, resistance, insulation voltages) • meets specified operating conditions (such as temperature, humidity, shock and ... |
| 1.6 | ... vibration) • any assembly/manufacturing schedule constraints (such as high profile components mounted after low profile ‘surface mount’ ones) |
| 1.7 | Produce electronic drawings which include ten of the following: • straight lines • dimensions • angled lines • text • insertion of electronic components • type and size of cables • connection/termination details • electrical/electronic symbols and abbreviations • curved/contour lines • circles or ellipses • parts lists • test points • colour/component coding • fault diagnosis aids (such as fault trees, flow diagrams) • other specific electronic detail |
| 1.8 | Produce drawings in the required formats |
| 2 | 1b. Produce electronic engineering drawings using computer aided techniques (continued) | 2.1 | Produce three of the following types of electronic drawings: • circuit diagrams • wiring diagrams • block diagrams • schematics • system drawings • circuit board assembly • circuit board layout • general assembly drawings • assembly of cable looms/harnesses |
| 2.2 | Use codes and other references that follow the required conventions |
| 2.3 | Produce drawings which comply with one or more of the following: • organisational guidelines • statutory regulations and codes of practice • CAD software standards • BS and ISO standards • other international standard |
| 2.4 | Make sure that drawings are checked and approved within agreed timescales by authorised people |
| 2.5 | Ensure that drawings are properly registered and stored securely |
| 2.6 | Save and store drawings in appropriate locations, to include carrying out all of the following: • ensure that their drawing has been checked and approved by the appropriate person/s • check that the drawing is correctly titled and referenced • save the drawing to an appropriate storage medium • create a separate backup copy and place it in safe storage • produce a hard copy printout of the drawing for file purposes • register and store the drawings in the appropriate company information system • where appropriate, record and store any changes to the drawings in the appropriate company information system |
| 2.7 | Ensure that changes are completed as required by organisational procedures |
| 3 | 2a. Know how to produce electronic engineering drawings using computer aided techniques | 3.1 | Describe the specific safety precautions to be taken when working with computer systems (to include such things as safety guidance relating to the use of visual display unit (VDU) equipment and work station environment (such as lighting, seating, positioning of equipment), repetitive strain injury (RSI); the dangers of trailing leads and cables; how to spot faulty or dangerous electrical leads, plugs and connections) |
| 3.2 | Describe the good housekeeping arrangements (such as cleaning down work surfaces; putting disks, manuals and unwanted items of equipment into safe storage; leaving the work area in a safe and tidy condition) |
| 3.3 | Describe the basic set-up and operation of the computer system, and the peripheral devices that are used (such as mouse, light pen, digitiser and tablet, printer or plotter, and scanner) |
| 3.4 | Describe the correct start-up and shutdown procedures to be used for the computer system |
| 3.5 | Explain how to access the specific computer drawing software to be used, and the use of software manuals and related documents to aid efficient operation of the relevant drawing system |
| 3.6 | Explain how to deal with system problems (such as error messages received, peripherals which do not respond as expected, obvious faults with the equipment or connecting leads) |
| 3.7 | Describe the documentation required for particular applications (such as drawing briefs, specification sheets, request for change orders) |
| 3.8 | Describe the types of electronic drawings that may be produced by the software (such as circuit and wiring diagrams, block and schematic diagrams, assembly and installation drawings, circuit board layouts and circuit board assembly) |
| 3.9 | Describe the difficulties that can emerge in manufacturing processes because of poor drawings/design |
| 3.10 | Describe the national, international and organisational standards and conventions that are used for the drawings |
| 3.11 | Explain how to set up the drawing template parameters (such as layers of drawings, scale, paper size, colour set-up, line types, dimension system and text styles) |
| 3.12 | Describe the application and use of drawing tools (such as for straight lines, curves and circles; how to add dimensions and text to drawings, producing layers of drawings) |
| 4 | 2b. Know how to produce electronic engineering drawings using computer aided techniques (continued) | 4.1 | Explain how to access, recognise and use a wide range of standard electronic component symbol libraries from the CAD equipment |
| 4.2 | Describe the factors to be taken into account when producing electronic drawings (such as safety requirements, operating parameters of components, position of components in relation to other sources or circuits, possibility of external interference, etc) |
| 4.3 | Describe the electronic equipment and circuits being drawn, and the function of the individual components within the circuits |
| 4.4 | Describe the selection of the various components and cables being used, with regard to their operating ranges and current carrying capacity |
| 4.5 | Describe the use of specific regulations and standard reference tables when selecting components and cables (such as IEE regulations) |
| 4.6 | Describe the basic calculations that may be required to be carried out to verify the value/rating of components and circuits (such as Ohm’s Law) |
| 4.7 | Explain how power cables might affect/corrupt electronic components, and the need to consider this when producing the drawing (such as the positioning, siting and routeing of electrical cables and wires) |
| 4.8 | Describe the manufacturing processes used for populating circuits with components |
| 4.9 | Describe the constraints laid down by existing national and international legislation, statutory and non-statutory regulations, industry and national standards, industry guidelines and professional codes that regulate electronic design activities |
| 4.10 | Describe the need for document control (such as ensuring that completed drawings are approved, labelled and stored on a suitable storage medium, the need to create backup copies and to file them in a separate and safe location away from electromagnetic sources, filing and storing hard copies for use in production) |
| 4.11 | Describe the procedures for drawing change notes, trial changes, up-issuing of drawings, modifications, and miscellaneous amendments to drawings |
| 4.12 | Describe the extent of their own responsibility and to whom they should report if they have any problems that they cannot resolve when producing the drawings |
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