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The subject fiber optic to machine interface adapter acts as an intelligent modem, and allows for connection of any machine requiring a data link into a fiber-optic communication network.
English (United States)
This text was extracted from a PDF file.
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This is the abbreviated version, containing approximately
54% of the total text.
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Fiber Optic Communications Network Interface
The subject fiber optic to machine interface adapter acts as an intelligent
modem, and allows for connection of any machine requiring a data link into a
fiber-optic communication network.
Referring to the drawing, the fiber-optic interface adapter 1 may logically be
described by reference to its receiver and transmitter functions. Focusing first on
the receiver aspects of the interface, fiber-optic receivers 3, 4 and 5 convert
incoming light energy from fibers 47, 48 and 49, respectively, into suitable
electrical logic levels for receiver-decoder 16. Decoder 16, under instruction of
controller 2 via link 18, converts fiber-optic codes into machine codes. Output
interface elements 9, 10, and 11, under instruction of controller 2 via links 26, 27
and 28, convert the decoder output levels to levels suitable to the machines (not
shown) connected by electrical connectors 39, 40 and 41.
Focusing now on transmitter logic, input interface elements 12, 13 and 14,
under instruction of controller 2 via links 34, 35 and 36, convert the incoming
machine data levels into suitable levels for transmitter-decoder 17. Decoder 17,
under instruction of controller 2 via link 19, converts incoming machine codes
from connectors 42, 43 and 44, into fiber-optic link codes. Fiber-optic
transmitters 6, 7 and 8 accept the electrical signals from decoder 17 to modulate
the light source feeding fibers 50, 51 and 52.