FOT103
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Transcript of FOT103
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SIGMA
ANALOG & DIGITAL FIBER OPTIC LINK
MODEL FOT100N Mfd.by: -
SIGMA TRAINERSE-103, J! A"b# N$%,
N#% d$" S'())*, T(*+#,
AMEDABAD - 300/.
P()# : 21-4-56/554 756/05
F8 : 21-4-56050
E"!* : 9*#99!$"+%!#%9. ')"
: 9!$"+%!#%99!fy .')"
;#b :
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CAPTERS
1. To study Circuit detail of Analog & Digital fiber optic link.
E=PERIMENTS1. To transmit and receive analog signal using fiber optic cable.
2. To transmit and receive digital signal using fiber optic cable.
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INTRODCTION
This trainer has been designed ith a vie to provide practical and e!p erimental knoledge of a general
circuit of analog and digital fiber optic link o n a "#$%' (.C.).
SPECIFICATIONS
1. (oer supply re*uirement + 23,- AC /, 0.
2. )uilt in #C based poer supply.
3. Transmitter+ 2 $o. iber optic 'Ds 4(eak 5avelength of emission 66,mm7
8. 9eceiver+ 2 $o. iber opt ic (hoto Detectors
/ . unct ion %enera to r+
a.1 :h "ine 5ave 4Amplitude ad;ustable7
b. 1 :h "* uare 5a ve 4T T7
6. All parts are soldered on single pin TA%" on single (C) of sie 12< ! =< ith complete circuit diagram
screen printed.
>. "tandard Accessories + 1. A Training ?anual.
2. Connecting (atch cords.
3. iber @ptic Cable 1 meter.
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CAPTER-1
CIRCIT DETAILS ANALOG & DIGITAL FIBER OPTIC LINK
The Analog & Digital fiber optic link consists of folloing sections.
1 . Analog s ignal t ransmit ter
2 . Digital Data transmi tter 3 . Analog s ignal receiver
8 . Digital Data receiver
/ . unct ion %enera to r
6 . ( o er su pp ly.
>1? A*)$ T%9"!++#% 9#'+!) :-
0ere #C >80C,8 and #c 8,8, and T,>8 together used to generate sineave signal. 0ere crystal and #C>80C,8 is used to generate clock fre*uency. Than #c8,8, that is asynchronous )inary 12 bit counter is used to
generate 1:h Clock signal. And this clock signal is given as input o f filter that is made by using #c T,>8. This#C contains for operational amplifier.4#C >817.
$o th e 1kh sin e av e is gi ve n to th e Am pl if ier ck t an d ou tp ut of th is ampli fi er is given to th e ba se of
transistor 2$2222. At the collector of this fiber 'D of B2,nm is connected that coverts the electrical si gnal intothe light signal and this light signal is transmitted through the fiber optic cable.
>5? D!$!+* T%9"!++#% 9#'+!) :-
The output from #C 8,8, that is 1kh TT clock pulse is given to the digital input of the digital transmittersection. And again also at the emitter of the transistor )C/8B fiber led is connected n o the electrical signal is
converted into the light signal using 6/,nm fiber led.
>3?. A*)$ 9!$* %#'#!@#% 9#'+!):-
The received light signal is converted into electrical signal by receiving (hoto diode. Then it is given to to #C
3/3 and 3/1 hich are used to amplify input analog si gnal. The amplified signal is available at output terminal.
>?. D!$!+* 9!$* %#'#!@#% 9#'+!):-
The received light signal is converted into electrical signal by receiving (hoto diode. Then it is given to #C >81
And #C 311 hich are used to amplify input analog signal. The amplified signal is available at output terminal.
>/? P)
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TEST POINT ;AEFORMS
;1. A*)$ !7:-
,./-
,./-
1m s
;5. >+ R#')@#%#d O7P +#%"!*?:-
;3: D!$!+* !+:-
;. D!$!+* )++ + R#')@#%#d O++ +#%"!*:-
6
0 E 1 ms
- E 1., -
Trig E C9@1
0 E 1msdiv
- E 1.,-div
Trig E C9@2
0E1msdiv
-E2volts
0E1msdiv
-E2voltsdiv
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