The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to perform advanced programming of a coordinate measuring machine. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with advanced programming of a coordinate measuring machine or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning should not require language, literacy and numeracy skills beyond those required in this unit. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

Required skills

Look for evidence that confirms skills in:

determining program parameters from written job instructions, specifications, charts, lists, drawings and other applicable reference documents

selecting the correct units for the job requirements

selecting suitable probes and determining probe configuration

determining and qualifying probe angles for each probe

creating multiple DCC alignment

integrating new and/or existing DCC sub-routines

constructing geometric features for the program

reviewing and editing program to specification

changing system wide operations to ensure the most efficient operation of the program

checking that the integrity of the system is maintained

archiving and backing up

outputting results output to printer, disc or other formats

planning and sequencing operations/processes

checking and clarifying information

completing workplace documents and short reports

checking for conformance to specifications

undertaking calculations for determining program parameters and checking tolerances

undertaking numerical operations, geometry and calculations/formulae within the scope of this unit

following verbal instructions

orally reporting information

Required knowledge

Look for evidence that confirms knowledge of:

program specifications

the procedure for producing the program

the parameters for selecting attributes

the reason for selecting multiple probes

the procedure for determining multiple probe configuration

the procedure for determining probe angles

the qualification procedure

the procedure for creating DCC alignment

the critical differences between single and multiple DCC alignment

problems due to integrating sub-routines

advantages gained through integration of DCC sub-routines

the procedure for constructing geometric features

reasons for constructing features in the sequence followed

the procedure for ensuring the dimensioning techniques comply with relevant standards

the procedure for ensuring all notes/instructions are clear and logical

the procedures and parameters for editing, archiving and backing up programs

the effects of editing particular sections of the program

the effects on other programs of changing software or hardware options

the procedures for changing system-wide options

the list of recipients or those with access rights to the programs

the procedures for producing/storing results/reports

the procedure for notifying personnel of completion of the program is explained

techniques, tools and equipment to measure components

hazards and control measures associated with advanced CMM programming, including housekeeping

use and application of personal protective equipment

safe work practices and procedures

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.