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Optical Transport System Design
Optical Transport System Design

... The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. ...
Trouble Shooting Guide for Incremental Encoders
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... Reverse the wiring on the receiving end of the signals for A & B (A’ & B’ also for differential encoders.) This action should produce the desired results, however it may not be the correct solution.. If differential signals are being used, make sure that both sides are properly wired. Note: If an in ...
ANALOG COMMUNICATIONS
ANALOG COMMUNICATIONS

... IF Amplifier and AGC Most receivers have two or more IF stages to provide the bulk of their gain (i.e. sensitivity) and their selectivity. Automatic gain control (AGC) is obtained from the detector stage to adjusts the gain of the IF (and sometimes the RF) stages inversely to the input signal lev ...


DDP Series - Harmonic Drive
DDP Series - Harmonic Drive

... Drive setup is fast and easy using HDM software communicating via RS-232 or over the CAN bus. All of the operations needed to configure the drive are accessible through this powerful and intuitive program. Autophasing of brushless motor Hall sensors and phase wires eliminates “wire and try”. Connect ...
AD7911 数据手册DataSheet下载
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... Data In. Logic input. The channel to be converted is provided on this input and is clocked into an internal register on the falling edge of SCLK. Serial Clock. Logic input. SCLK provides the serial clock for accessing data from the part. This clock input is also used as the clock source for the AD79 ...
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No Slide Title

... Low-level distribution is in Metal 1  Power has to be ‘strapped’ in higher layers of metal.  The spacing is set by IR drop, electromigration, inductive effects  Always use multiple contacts on straps ...
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... peak in-band gain as the actual device has. It is the same as the integral of the gain of the device over the usable frequency bandwidth. Typically, B is approximately equal to the 3 dB bandwidth. For best sensitivity, B should be no greater than required for the information bandwidth. In RF applica ...
Network Reference Model for cdma2000 Spread Spectrum
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... The radio receiver should remember Preset radio stations that have been programmed in by the owner. The Preset radio stations are stored internally and should be recalled even if the Power Source or Battery (B+) and the ground are removed. The only exception to this rule is the Presets that are stor ...
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... • The MicroSmart is designed for installation in a cabinet. Do not install the MicroSmart outside a cabinet. • Install the MicroSmart in environments described in this user’s manual. If the MicroSmart is used in places where the MicroSmart is subjected to high-temperature, high-humidity, condensatio ...
AD7450 - Analog Devices
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... design for high-precision analog/RF components is usually timeconsuming. The efficient numerical analysis of the transistor-level transient noise is required to facilitate the high-precision analog/RF designs in the nanometer region. A number of previous arts have been proposed to address the aforemen ...
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... Low-level distribution is in Metal 1  Power has to be ‘strapped’ in higher layers of metal.  The spacing is set by IR drop, electromigration, inductive effects  Always use multiple contacts on straps ...
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... SR3: Gain (in amplitude) is 4.0 for channels, processing front module and 8.0 rear one. The uniformity is better than ±2.5% [6] SR4: Inversion of the signal polarity. Input signals are positive, output are negative Since the cables used in the electronics chain have 50 impedance, so: SR5: The input ...
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... applications. The device operates from a 5-V analog supply and a 3-V to 5-V range digital supply. The THS8134 has a sampling rate up to 80 MSPS. The device consists of three 8-bit D/A converters and additional circuitry for bi-level/tri-level sync and blanking level generation in video applications. ...
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... 1.2 Ultra-low noise AC amplifiers with unipolar transistors Amplifiers with bipolar transistor offer very low noise but have also some drawbacks – low input impedance and high input current noise, so they are suitable especially for signal sources with low output impedance, typically bellow 1 kOhm. ...
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Private Database Search with Sublinear Query Time

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... The number of hours stated in the curriculum table may be increased or decreased to suit individual institutions’ timetable provided the entire course content is properly covered and the goals and objectives of each module are achieved at the end of the term. The maximum duration of any module in th ...
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Telecommunication



Telecommunication occurs when the exchange of information between two or more entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves. The word is often used in its plural form, telecommunications, because it involves many different technologies.Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs. Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, and loud whistles. Modern technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, and teleprinter, networks, radio, microwave transmission, fiber optics, and communications satellites.A revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications by Guglielmo Marconi, who won the Nobel Prize in Physics in 1909. Other highly notable pioneering inventors and developers in the field of electrical and electronic telecommunications include Charles Wheatstone and Samuel Morse (telegraph), Alexander Graham Bell (telephone), Edwin Armstrong, and Lee de Forest (radio), as well as John Logie Baird and Philo Farnsworth (television).
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