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Elements and Performance Criteria

1. Prepare to modify DSP based systems
   • OHS processes and procedures for a given work area are obtained and understood.
   • Established OHS risk control measures and procedures are followed in preparation for the work.
   • The extent of the proposed electronic DSP based system is determined from the design brief or in consultations with appropriate person(s)
   • Design development work is planned to meet scheduled timelines in consultation with others involved on the work site
   • Materials and devices/components required for the work are determined on compatibility of their specifications with DSP based system requirements and project budget constraints.
2. Modify DSP based systems
   • OHS risk control measures and procedures are followed.
   • Knowledge of digital and analogue elements used in DSP based systems and compliance standards are applied to the design
   • Alternative arrangements for the modification are considered based on the requirements outlined in the design brief.
   • Safety, functional and budget considerations are incorporated in the design.
   • Prototype devices and circuits are constructed, programmed and tested for compliance with the design brief and regulatory requirements.
   • Prototype malfunctions are rectified and retested to ensure effective operation of design.
   • DSP based system modification is documented for submission to appropriate person(s) for approval
   • Solutions to unplanned situation are provided consistent with organisation policy.
3. Obtain approval for electronic DSP based systems modification
   • DSP based system modification is presented and explained to client representative and/or other relevant person(s).
   • Requests for alterations to the design are negotiated with relevant person(s) within the constraints of organisation policy.
   • Final design is documented and approval obtained from appropriate person(s).
   • Quality of work is monitored against personal performance agreement and/or established organizational or professional standards

Required Skills

This describes the essential skills and knowledge and their level required for this unit Evidence shall show that knowledge has been acquired of safe working practices and modifying DSP based systems All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies KSEHA Digital Signal Processing Evidence shall show an understanding of digital signal processing applying safe working practices and relevant Standards Codes and Regulations to an extent indicated by the following aspects T DSP development technologies T Infinite Impulse Response IIR filter encompassing polezero placement method to obtain coefficients for a simple firstorder and secondorder lowpass and bandpass IIR filter directform realisation of a simple IIR filter suitable for sinxx compensation DSP system T Highorder IIR filter encompassing filter design package to obtain the coefficients for a highorder IIR filter highorder IIR filter would be realised using a cascade or a parallel combination of firstorder or secondorder IIR filter blocks effect of coefficient quantisation errors and calculation roundingoff errors on filter performance IR filters and symmetrical FIR filters T Discrete Fourier Transform DFT to a signal encompassing discrete correlation signaldetection correlation used to generate DFT windowfunction when generating the DFT T Concept of complex signals encompassing positivefrequency and a negative frequency signal exponential and polar form of sinusoidal signal and a complex sinusoidal signal spectra of a general signal having equal real and imaginary components An analytic or quadrature signal analytic signals simplification filtering operations T Fast Fourier Transform FFT encompassing Decimation in Time FFT and the twiddle factor samplefrequency and number of signal samples needed for a FFT FFT routine T FIR filtering using FFT encompassing overlap save method of implementing a long FIR filter using the FFT and the inverse FFT limitations on the stored frequencyresponse coefficients and the resulting impulseresponse T Datarate conversion encompassing datarate conversion decimation simplification of the antialias filter requirement datarate conversion interpolation of the DSP system simplification the reconstructionfilter requirement and reduces the need for sinxx compensation T Modulation and demodulation techniques encompassing Spectra where real signals and analytic quadrature signals are modulated by a sinusoidal function amplitudemodulated signal singlesideband signal T Digital processing steps in practical DSP applications T Currently available DSP support chips

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria Required Skills and Knowledge the Range Statement and the Assessment Guidelines for this Training Package The Evidence Guide forms an integral part of this unit It must be used in conjunction with all parts of the unit and performed in accordance with the Assessment Guidelines of this Training Package

Overview of Assessment

Longitudinal competency development approaches to assessment such as Profiling require data to be reliably gathered in a form that can be consistently interpreted over time This approach is best utilised in Apprenticeship programs and reduces assessment intervention It is the Industrypreferred model for apprenticeships However where summative or final assessment is used it must include the application of the competency in the normal work environment or at a minimum the application of the competency in a realistically simulated work environment It is recognised that in some circumstances assessment in part or full can occur outside the workplace However it must be in accord with industry and regulatory policy Methods chosen for a particular assessment will be influenced by various factors These include the extent of the assessment the most effective locations for the assessment activities to take place access to physical resources additional safety measures that may be required and the critical nature of the competencies being assessed The critical safety nature of working with electricity electrical equipment gas or any other hazardous substancematerial carries risk in deeming a person competent Sources of evidence need to be rich in nature to minimise error in judgment Activities associated with normal everyday work influence decisions about howhow much the data gathered will contribute to its richness Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package

Critical aspects of evidence required to demonstrate competency in this unit

Before the critical aspects of evidence are considered all prerequisites shall be met Evidence for competence in this unit shall be considered holistically Each Element and associated performance criteria shall be demonstrated on at least two occasions in accordance with the Assessment Guidelines UEE Evidence shall also comprise A representative body of work performance demonstrated within the timeframes typically expected of the discipline work function and industrial environment In particular this shall incorporate evidence that shows a candidate is able to Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the performance criteria and range statement Apply sustainable energy principles and practices as specified in the performance criteria and range statement Demonstrate an understanding of the essential knowledge and associated skills as described in this unit It may be required by some jurisdictions that RTOs provide a percentile graded result for the purpose of regulatory or licensing requirements Demonstrate an appropriate level of skills enabling employment Conduct work observing the relevant Anti Discrimination legislation regulations polices and workplace procedures Demonstrated consistent performance across a representative range of contexts from the prescribed items below Modify DSP based systems as described in and including Developing the design modification within the safety and functional requirements and budget limitations Documenting and presenting design effectively Successfully negotiating design alteration requests Obtaining approval for final modification Documenting justification of actions to be implemented in accordance with professional standards Dealing with unplanned events by drawing on essential knowledge and skills to provide appropriate solutions incorporated in a holistic assessment with the above listed items Note Successful completion of relevant vendor training may be used to contribute to evidence on which competency is deemed In these cases the alignment of outcomes of vendor training with performance criteria and critical aspects of evidence shall be clearly identified

Context of and specific resources for assessment

This unit should be assessed as it relates to normal work practice using procedures information and resources typical of a workplace This should include OHS policy and work procedures and instructions Suitable work environment facilities equipment and materials to undertake actual work as prescribed by this unit These should be part of the formal learningassessment environment Note Where simulation is considered a suitable strategy for assessment conditions must be authentic and as far as possible reproduce and replicate the workplace and be consistent with the approved industry simulation policy The resources used for assessment should reflect current industry practices in relation to modifying DSP based systems

Method of assessment

This unit shall be assessed by methods given in Volume Part Assessment Guidelines Note Competent performance with inherent safe working practices is expected in the industry to which this unit applies This requires that the specified essential knowledge and associated skills are assessed in a structured environment which is primarily intended for learningassessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit

Concurrent assessment and relationship with other units
	There are no concurrent assessment recommendations for this unit

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Range Statement

10) This relates to the unit as a whole providing the range of contexts and conditions to which the performance criteria apply. It allows for different work environments and situations that will affect performance. This unit shall be demonstrated using a representative range of DSP based systems in relation to modifying an electronic DSP based system. Generic terms used throughout this Vocational Standard shall be regarded as part of the Range Statement in which competency is demonstrated. The definition of these and other terms that apply are given in Volume 2, Part 2.1.

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