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Evidence Guide: ICTBWN3082B - Perform tests on optical communication system and components

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

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ICTBWN3082B - Perform tests on optical communication system and components

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare to use optical measuring instruments

  1. Obtain relevant legislation, codes, regulations and standards and prepare for the given work
  2. Notify customer for site access, security arrangements and location details of optical system and test purpose
  3. Identify site hazards and notify appropriate personnel to make site safe
  4. Devise and implement risk control measures of hazards with handling optical fibres and lasers in consultation with appropriate personnel
  5. Prepare a testing plan indicating the type of measurement at the nominated wavelength and seek approval from customer
  6. Select the appropriate tools and test instruments according to the required measurement and enterprise practice
Obtain relevant legislation, codes, regulations and standards and prepare for the given work

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Notify customer for site access, security arrangements and location details of optical system and test purpose

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify site hazards and notify appropriate personnel to make site safe

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Devise and implement risk control measures of hazards with handling optical fibres and lasers in consultation with appropriate personnel

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare a testing plan indicating the type of measurement at the nominated wavelength and seek approval from customer

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select the appropriate tools and test instruments according to the required measurement and enterprise practice

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conduct optical measurements

  1. Set up test instrument according to manufacturer’s instructions according to occupational health and safety (OHS) and environmental requirements
  2. Perform measurement using knowledge of appropriate testing techniques and in a safe manner to assess the performance of optical system and component
  3. Record test results and compare with standard test specifications from manufacturer and enterprise guidelines
  4. Evaluate the test results and report on the functionality of the optical component or equipment and the performance of the optical system
Set up test instrument according to manufacturer’s instructions according to occupational health and safety (OHS) and environmental requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform measurement using knowledge of appropriate testing techniques and in a safe manner to assess the performance of optical system and component

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record test results and compare with standard test specifications from manufacturer and enterprise guidelines

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Evaluate the test results and report on the functionality of the optical component or equipment and the performance of the optical system

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document measurement results

  1. Document test results for future reference and make recommendations on optimising component and system performance
  2. Clean work site and make safe according to the enterprise requirements and to customer satisfaction
  3. Notify appropriate personnel of job completion for sign off and present test documentations
Document test results for future reference and make recommendations on optimising component and system performance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clean work site and make safe according to the enterprise requirements and to customer satisfaction

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Notify appropriate personnel of job completion for sign off and present test documentations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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

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

Evidence of the ability to:

measure optical power level

measure insertion loss of a passive device

measure end-to-end fibre loss (bi-directional)

measure splice loss

measure distance to fault, event, end of fibre using OTDR

comply with all related OHS requirements and work practices.

Context of and specific resources for assessment

Assessment must ensure:

sites on which optical measurements can be conducted

tools and equipment required for measurements

manufacturer’s documentation for test instruments and equipment under test.

Method of assessment

A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate for this unit:

direct observation of the candidate performing optical measurements

review of a written reports and test results completed by the candidate

oral or written questioning to assess required knowledge.

Guidance information for assessment

Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended, for example:

ICTBWN3100B Work safely with live fibre to test and commission a fibre to the x installation

ICTBWN3205B Use optical and radio frequency measuring instruments.

Aboriginal people and other people from a non-English speaking background may have second language issues.

Access must be provided to appropriate learning and assessment support when required.

Assessment processes and techniques must be culturally appropriate, and appropriate to the oral communication skill level, and language and literacy capacity of the candidate and the work being performed.

In all cases where practical assessment is used it will be combined with targeted questioning to assess required knowledge. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency.

Where applicable, physical resources should include equipment modified for people with special needs.

Required Skills and Knowledge

Required skills

communication skills to liaise with customers and enterprise staff

literacy skills to read and interpret work instructions and document work

numeracy skills to gather and record data from measurements

planning and organisational skills to plan, prioritise and manage own work

safety awareness skills to:

apply precautions and required action to minimise, control or eliminate hazards that may exist during work activities

select and use required personal protective equipment conforming to industry and OHS standards

work systematically with required attention to detail without injury to self or others, or damage to goods or equipment

technical skills to:

clean an optical connector to an acceptable industry standard

safely inspect an optical connector for contamination and determine if cleaning is necessary

safely operate:

optical loss test set (OLTS)

optical time domain reflectometer (OTDR)

PON power meter.

Required knowledge

consequences of mating contaminated optical connectors

downstream and upstream signals

DWDM metro and long haul system architecture

HFC architecture (optical section)

logarithmic power levels (decibels, dBm)

optical connector types

optical fibre safety, practices, handling and theory

optical spectrum limits, wavelengths used in various applications and International Telecommunications Union (ITU) grid

optical transmitters and receivers

PON architecture

safe handling procedures with optical fibres

transmission system line rates:

optical Ethernet

synchronous digital hierarchy (SDH)

wavelength division multiplexing (WDM), coarse wavelength division multiplexing (CWDM) and DWDM principles and optical multiplexers.

Range Statement

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.

Relevant legislation, codes, regulations and standards may include:

appropriate licences:

crane

EWP

forklift

winch

Australian Construction Industry Forum (ACIF) standards and codes

AS Communications Cabling Manual (CCM) Volume 1

AS/NZS 3000:2007

AS/NZS 3080:2003

AS/NZS 3084:2003

AS/NZS 3085.1:2004

AS/NZS IEC 61935.1:2006

AS/NZS IEC 61935.2:2006

AS/NZS ISO/IEC 14763.3:2007

AS/NZS ISO/IEC 15018:2005

AS/NZS ISO/IEC 24702:2007

cabling security codes and regulations

Environmental Protection Acts

OHS

technical standards AS/ACIF S008:2006 and AS/ACIF S009:2006.

Customer may be:

asset manager

installation manager

maintenance manager

nominated customer representative

outage manager

project manager.

Optical system may contain:

add-drop multiplexer

DWDM system

fibre hub

HFC network

optical line termination (OLT)

optical network termination (ONT)

optical amplifier

optical splitter.

Hazards may include:

building debris

earth potential rise

glass fibre

live power lines

manual handling

mud and water

natural gas and other gas build up

optical fibre cable may contain hazardous light

radio frequency (RF) equipment emitting radiation

remote power feeding services which operate at above telecommunications network voltage

vermin.

Testing plan may include:

correct test set-up

recording and evaluation of measurements

test layout

test procedures

test purpose

test sites and location

type of measurements

use of appropriate test equipment.

Type of measurement may include:

end-to-end continuity using visual fault locator

fibre loss (bi-directional)

insertion loss:

coupler

filter

optical splitter

WDM

optical power level at:

drop terminal

OLT

ONT

optical transmitter

patch panel

optical return loss (ORL)

splice loss

total end-to-end loss, including splices and connectors.

Wavelengths may include:

850 nm

1310 nm

1490 nm

1550 nm.

Tools may include:

alcohol swabs

dry type cleaning cassette for optical connectors

hand tools

lint-free dry wipes

microscope for examining optical connector with:

integral safety infra-red filter

video microscope display

optical connector adaptors

FC to LC

FC to SC

FC to ST

SC to ST

optical reference cable

optical termination.

Test instruments may include:

bi-directional automated optical loss test set

hand-held optical power meter

hand-held optical source

launch cable for OTDR

OFI-FTTx active ONT detector

OLTS

ORL test set

OTDR multimode

OTDR single mode

PON – OTDR

PON meter

visual fault locator (VFL).

OHS and environmental requirements may include:

decommissioning and isolating worksite and lines prior to commencement

identifying other services, including power and gas

personal protective equipment:

earmuffs

gloves

head protection

masks

protective suits

safety boots

safety glasses

safe working practices, such as the safe use and handling of:

chemicals

materials

tools and equipment

work platforms

safety equipment:

flashing lights

safety barriers

warning signs and tapes

witches hats

special access requirements

environmental considerations:

clean-up protection

stormwater protection

waste management.