Using the panel mod. EFO41/EV and the theoretical-experimental handbooks of its equipment will enable it to carry out a modular theoretical-experimental course on optical fibres and the electronic circuits and transmission systems using them. It consists of a panel mounted on the vertical support and includes optical instruments and different accessories.

In detail, the panel is provided with a silk-screen printed diagram showing the functional blocks, the test and signalling points, all connectors and the necessary sockets for the different circuit topologies and for an easy and immediate understanding of the operation of all its components.

Moreover, professional optical instruments are used and also troubleshooting operations can be carried out.

TRAINING PROGRAM

Introduction to optical fibre systems:

• Optical fibers

- Constructional structure

- Light propagation in optical fibres

- Modal dispersion

- Chromatic dispersion

- Attenuation

- Bandwidth

• Sources and detectors

- Sources: Led and Laser

- Optical detectors: PIN and avalanche photodiodes

• Connections and headings

- Connections

- Headings

Optical fibre communication systems:

• Digital transmission system

• Analog transmission system

• Video transmission system

• Transmission system between PCs

• Data Multiplexer transmission system

• Bidirectional transmission system with one fibre

• Bidirectional transmission system with two fibres

• Synchronous data transmission

• Asynchronous data transmission

• Used components

- digital transmitter

- analogue transmitter

- digital receiver

- analogue receiver

- FM modulator

- FM demodulator

- audio modulator and Audio+Video combiner

- Video/Audio separator and Audio demodulator

- data multiplexer

- data demultiplexer

- WDM (Wavelength Division Multiplexer)

- data coding/decoding: NRZ, Manchester, bi-phase Mark /

Space

- V24/RS232C interface

• Characteristics of components:

- Digital and linear driving

- characteristic curves of the optical source

- bias current

- emitted power adjustment

- “Optical power/current” curve of the source

- operating point of the LED

- characteristics and driving of Laser diode

- automatic control of the power emitted by the Laser diode

- waveform of the transmitted signal

- detector responsivity

- characteristics and biasing of avalanche photodiode

- receiver saturation

- modal dispersion

- linearity of the connection

- frequency response of the connection

- dimensioning of the connection

- power margin

Measurements on optical fibres:

• Identification of components

• Structure of optical cables

• Numerical opening

• Attenuation

• Connectors

Troubleshooting

TECHNICAL SPECIFICATION

Silk-screen printed panel:

• Characteristics:

- It contains the silk-screen printed panel

- It contains the functional block diagrams

- It contains the access and connection points, signalling and

test points of system components

- The rear side in transparent plastic enables to display of all parts

• Components included:

- LCD colour Video Monitor

- 2 amplified speakers with volume control

- 300 meters of multimode connecterized graded-index

62.5/125 optical fiber

- Pulse generator

- Data generator (0, 1, 0/1, 4x0/4x1)

- Sine generator

- Input for external microphone

- Video bar generator

- FM modulator / FM demodulator

- Audio modulator / Audio demodulator

- Audio/Video combiner

- Audio/Video separator

- Audio amplifier with loudspeaker

- Transmission interface/reception interface

- LED optical source

- LASER optical source and monitoring photodiode for automatic power control (APC)

- Optical receiver with PIN photodiode

- Optical receiver with avalanche photodiode

- 8-channel data multiplexer

- 8-channel data demultiplexer

- Wavelength division multiplexer

- Wavelength division demultiplexer

- Data coders/ decoders: NRZ, Manchester, Biphase Mark

Space

- V24/RS232C/USB interfaces

• Audio/Video inputs

• Audio/Video outputs

• Test points, display, connection and regulation

• 10-fault simulator insertable using switches and protected with key-lock covering

Power supply: 230 Vac 50 Hz single-phase - 50 VA (Other voltage and frequency under request)

Dimensions: 640 x 810 x 300 mm

Total weight: 25 kg

Kit for Numerical Opening evaluation:

• Characteristics:

- Laser Source is visible

- Support for connectorized fibres

Accessories:

• Cables as necessary

• Microphone

Optical cables:

• 4 3-m optical cables of graded-index connectorized fiber 62.5/125

• 1 3-m optical cable of step-index connectorized fiber 9/125

• 1 3-m optical cable of connectorized step-index fibre 200/230

• 1 5-m optical fiber with connectorized plastic fiber

Portable Optic Power Source:

• Characteristics:

- Double light source: selectable in the first and second Windows (850/1300 nm)

- signalling LED

- Adaptor for ST Connector included

- ON/OFF control

- solid external cover of soft plastic

- suitable for portable use

- perfectly combinable to be used with the portable optical power measuring unit

- power supply from the internal battery of 9 Vdc

Portable Optical Power Measuring Unit:

• Characteristics:

- triple light measure band: selectable in the 1st, 2nd and 3rd Windows (850/1300/1500 nm)

- it enables to identification and measurement of the optical power of an optical fibre and to carry out tests on cables and devices

- LCD Control and level measure Display

- Absolute and relative measurement: dBm and dB

- Adaptor for ST connector included

- ON/OFF control

- solid external cover of soft plastic

- suitable for portable use

- perfectly combinable to be used with the portable optical power source

- power supply from the internal battery of 9 Vdc

-Rack frame

Technical Clauses:

The bidder must present a manufacturer authorization

• Training manual for the items

• Software packages needed for experimenting using these items

• The supplier must provide one week of training to 15 trainers