Adtron’s Fiber Optics Trainer Model – 7519 is designed to learn the basics of Fiber Optics. The trainer demonstrates properties of Fiber Optic Transmitter & Receiver, Characteristics of Fiber Optic Cable and different types of Modulation / Demodulation techniques.
A large number of experiments are included in the workbook and many more can be performed using the trainer. The trainer can also be used to demonstrate various Digital Communication techniques via Fiber Optic link using other Digital Communication Trainers.
► Simplex Analog & Digital Trans Receiver.
► Single Module covering large number of experiments including experiments with optical power meter ( optional ).
► 660 nm channel with Transmitter & Receiver.
► AM – FM – PWM Modulation / Demodulation.
► On – board Function Generator.
► Crystal Controlled Clock.
► Functional Blocks indicated on – board mimic.
► Input / Output and test points provided on board.
► On – board voice link.
► Built – in DC power supply.
► Numerical aperture measurement jig and mandrel for bending loss are included.
► Switched faults on Transmitter & Receiver.
► Detailed instruction manual consists of student workbook & operating manual containing theory of Fiber Optics Technology, Experiments and Glossary of Fiber Optics Terms.
The manual consists of the following chapters :
► Introduction to Fiber Optics.
► Theory of Fiber Optics.
► Optical Fiber Communications System.
► Advantages of Fiber Optic System.
► Characteristics of Optical Fiber.
► Glossary of Fiber Optic Terms.
Experiments That can be Performed :
► Setting up Fiber Optic Analog Link.
► Setting up Fiber Optic Digital Link.
► AM system using Analog Input Signal.
► AM system using Digital Input Signal.
► Frequency Modulation System.
► Pulse Width Modulation System.
► Study of Propagation Loss in Optical Fiber.
► Study of Bending Loss.
► Measurement of Numerical Aperture.
► Characteristics of E – O Converter ( LED ).
► Characteristics of Fiber Optic Communication Link.
► Measurement of Optical Power Using Optical Power Meter.
► Characteristics of E – O Converter Using Optical Power Meter.
► Measurement of propagation loss in optical fiber using optical power meter.
► Setting of fiber optic voice link using amplitude modulation.
► Setting of fiber optic voice link using frequency modulation.
► Setting of fiber optic voice link using PWM.
► Study of Switched Fault in AM system.
► Study of Switched Fault in FM system.
► Study of Switched Fault in PWM system.
Technical Specifications :
► Transmitter : 01 no, Fiber Optic LED having peak wave length of emission 660 nm.
► Receiver : 01 no, Fiber Optic Photodetector.
► Modulation Techniques : 1. AM. 2. FM. 3. PWM.
► Drivers : 01 no. with Analog & Digital modes.
► PLL Detector : 01 no.
► Comparator : 01 no.
► Filters : 01 no. 4th Order Butterworth, 3.4 KHz cut off frequency.
► Analog Bandwidth : 350 KHz.
► Digital Bandwidth : 2.5 MHz.
► Function Generator : 1. 1 KHz Sinewave ( amplitude adjustable ).
2. 1 KHz Square Wave ( TTL ).
► Voice Link : F.O. voice link using microphone & speaker ( built – in ).
► Switched Faults : 08 nos. viz., 4 in transmitter & 4 in receiver.
► Fiber Optic Cable : 02 nos. of different lengths. Connector Type Standard SMA.
► Cable Type : Step indexed multimode PMMA plastic cable.
► Core Refractive Index : 1.492.
► Clad Refractive Index : 1.406.
► Numerical Aperture : Better than 0.5.
► Acceptance Angle : Better than 60 deg.
► Fiber Diameter : 1000 microns.
► Outer Diameter : 2.2 min.
► Fiber Length : 0.5 m & 1 m.
► Test Points : 41.
► Interconnections : 4 mm sockets.
► Power Supply : 230 V + 10 %, 50 Hz.
► Accessories Included : Detailed Instruction Manual, NA measurement jig, mandrel, Fiber Cables (0.5m & 1m), Microphone, Headphone, Set of Patch Cords.