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FIBRE
OPTIC TRAINERS |
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7. FIBER OPTIC TRANSMITTER AND RECEIVER
TRAINER (Digital Modulation & Demodulation) [VOFT-05] |
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VOFT-04 provides all necessary inputs and connections for
students to study the different modulation/ demodulation and
digital transmission / reception by using fiber optic
communication link. |
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Features: |
On-board modulating signal generator
On-board carrier signal generator
Onboard transmitter & driver
Different types of modulation technique
Various test points
Onboard receiver
Different types of Demodulator
Variable gain controller
Inbuilt power supply
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Specification:
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Transmitter
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Modulating Signal
#Clock bit rate : 9.6kbps
#8 bit programmable data bit rate : 9.6kbps
#Amplitude : 5V
Carrier signal
#Frequency : 9.6 KHz (ASK, PSK)
: 34.24 KHz (Mark)
: 40.64 KHz (Space) [FSK]
# Amplitude : 5Vpp
Modulation technique
#Amplitude shift keying
#Frequency shift keying
#Phase shift keying
Source wave length : 660nm
Optical output
connector : Screw type
Supply voltage : 12V, 5V,GND
Supply current :200mA (Approx)
Mode selection :Selectable switch
Interface connector
#External input :BNC
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| Receiver: |
Diode type: PIN photo diode
Diode wavelength: 660nm-950nm
Demodulation technique
#Amplitude shift keying : Envelope detector
#Frequency shift keying : PLL Detector
#Phase shift keying : Square Loop Detector
Optical input
connector : Screw type
Supply Voltage
: 12V, 5V, GND
Supply Current
: 200mA (Approx)
Interface
connector : BNC
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| Communicating
Media |
Fiber cable:1000micron plastic multimode fiber.
Core refractive index :1.492
Cladding refractive index:1.406
Numerical aperture:0.5
Acceptance angle:60 deg.
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| Accessories
Included |
1m Fiber cable
BNC-BNC cable -2 Nos
Detailed Experimental Documentation
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| Experiments: |
- To study the Digital Signal transmission & reception by fiber optic media.
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