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Elements and Performance Criteria

  1. Prepare to use optical measuring instruments
  2. Conduct optical measurements
  3. Document measurement results

Required Skills

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

Evidence Required

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 endtoend fibre loss bidirectional

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

manufacturers 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

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

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

ICTBWNB Use optical and radio frequency measuring instruments

ICTBWN3205B Use optical and radio frequency measuring instruments.

Aboriginal people and other people from a nonEnglish 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


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.