Fiber Optics
We use fiber optic technology in all of our systems. Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. Fiber Optics is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Due to much lower attenuation and interference, optical fiber has large advantages over existing copper wire in long-distance and high-demand applications. Fiber optic systems have many attractive features that are superior to electrical systems. The following are basic advantages of fiber optic communication technology:
- Lower signal attenuation (loss)
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Immunity to Electrical Noise
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Immune to noise (electromagnetic interference [EMI] and radio-frequency interference [RFI] )
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Lower bit error rates
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Signal Security
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Difficult to tap
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Nonconductive (does not radiate signals)
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Electrical Isolation
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No common ground required
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Freedom from short circuit and sparks
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Reduced size and weight cables
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Resistant to radiation and corrosion
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Resistant to temperature variations
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Improved ruggedness and flexibility
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Less restrictive in harsh environments
To correctly transmitting video and control data over fiber optic cables, we use industry standard coding and decoding algorithm, called 8/10b. 8b/10b is a DC-balanced, run-length-limited coding system found in Ethernet and many other high-performance serial transmission systems. DC Balance is a stream of data encoded to ensure an equal balance of 1 or 0. 8b10b encoding has been developed to ensure DC balancing. DC-balance brings many advantages to long distance transmission. 8b/10b also provides some rudimentary immunity to undetected bit errors. At the basic level, 8-bit data bytes are mapped to two 10-bit words. An algorithm keeps count of how many 1's and how many 0's have been sent (i.e., running disparity) and selects one of the two possible words to maintain an equal ratio of 1's to 0's over a predetermined period of time.
FPGA
We use industry leading Field Programmable Gate Array (FPGA) Integrated circuits from Xilinx Inc. FPGA gives a freedom of software and hardware development and its future upgrade. This allow us always be at leading position and implement new methods and technologies in our systems.
Manufacturing
To assure the highest quality, we assemble our products at ISO 9001 certified manufacturing facilities. |
