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Fiber optic communication is
one of the most popular technologies in the modern days due to
its high transfer capacity and quality, as well as speed and
security. KL-900D uses fiber optic as a trans-mission media for
the whole experiment. With four different data transmission ways
(self module transmission, module-to-module transmission,
PC-to-module transmission, and module-to-PC transmissions) and
various different modulation/demodulation methods (CVSD, FSK,
etc) introduced in the training system, users can obtain a very
clear view of how fiber-optic transmission works.
The system has 15 experiments,
listed below, from simple optical characteristic experiments to
sophisticated optical fibre digital data transmission using ASK
(Amplitude Shift modulation & demodulation Keying).
SPECIFICATIONS
Power：AC-DC
Adapter
- AC Input ：100~240V
- DC Output：15V，500mA
Microphone circuit：
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Frequency range：20Hz~12KHz
-
With 20 times
amplification circuit
Pushbutton switch：
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Normally open
type
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With LED
indication
Transmitter：
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Optical fiber
light：red wavelength 660nm LED
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Max. drive
current：50mA
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Effective
coupling micro-lens spotlight
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Emitter follower
transmission
Function generator：
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With analogy sine
wave, output amplitude adjustable
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With digital
square wave, CMOS level output
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Frequency range：6Hz~2KHz
Receiver：
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Optical receive
diode：
- lpeak：950nm
- Connectable 100mm Core plastic optical fiber
- Effective coupling micro-lens spotlight
- Max. consumption power：100mW
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With amplify,
gain, restoring circuit
Output speaker：8Ω，1/4W
Data transmission：
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Chip
set：AVR8515，8bits，8MHz Crystal
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LCD：back light
20×2 letter chip
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Keyboard：4×4
16Key
-
Letter
mode：single letter or string of letter available
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Send mode：OFF,
Transceiver, PC->Module, Module->PC
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With Reset
function
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Communication
interface：RS-232C，9600 Baud
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Software
environment：Windows base
LIST OF
EXPERIMENTS
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Optical
characteristic experiment
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Optical
application experiment
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Light source
experiment
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Optical fiber
light detector experiment
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Light source set
up experiment
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Optical fiber
receiver experiment
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Optical fiber
network and expanded experiment
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Optical fiber
linking and coupling experiment
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Optical fiber
digital data transmission
– self-transmission experiment
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Optical fiber
digital data transmission
– both sides transmission experiment
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Optical fiber
digital data transmission
– computer à module experiment
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Optical fiber
digital data transmission
– module à computer experiment
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Optical fiber
digital data transmission
– CVSD modulation & demodulation experiment (option)
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Optical fiber
digital data transmission
– PSK/QPSK modulation & demodulation experiment (option)
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Optical fiber
digital data transmission
– ASK amplitude shift modulation & demodulation experiment (option)
EXPERIMENT
MODULES
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2mm plugs and
sockets used throughout, connected by 2mm test leads.
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Circuits symbols,
blocks and components printed on the surface of PCB, back
assemble components.
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Modules secured
in plastic housings, the dimension：255×165×30mm±10%。
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With storage
cabinet for all modules to be easy storage.
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Completed
experiment manual
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Modules circuit
use short bar to reduce error.
ACCESSORIES
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2mm-2mm connect
lead 1 set
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Optical fiber
cable 1 set
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Experiment manual
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9P-9P Cable
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Transceiver
Software Disk
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AC-DC Adapter
power module
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Connect plug
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Headphone and
microphone
OPTION
MODULES
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KL-92001 Power
supply and function generator
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KL-94004 CVSD
modulation & demodulation
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KL-94005 ASK
amplitude shift modulation & demodulation
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KL-94006 PSK/QPSK
modulation
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KL-94007 PSK/QPSK
demodulation
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