Tip : thanks to Rob Staal for the tip! Visit the eTech website and get the latest version! For this tutorial you will only need UTP cable, router and power supply.
Form the left to the right:. Pretty simple, but I'll tell you anyway:. Start a webbrowser on your PC, for example Internet Explorer, and open Download the free Open Icecat data-sheets. Search similar products. Add to compare Don't compare. Brand : The general trademark of a manufacturer by which the consumer knows its products. A manufacturer can have multiple brand names. Some manufacturers license their brand names to other producers. Product name : Product name is a brand's identification of a product, often a model name, but not totally unique as it can include some product variants.
Product name is a key part of the Icecat product title on a product data-sheet. Product code : The brand's unique identifier for a product. Multiple product codes can be mapped to one mother product data-sheet if the specifications are identical. We map away wrong codes or sometimes logistic variants. Category Wireless Routers. Icecat Product ID : The gain must be sufficient to put the proper amount of power on the phone line for the DSL standard being implemented refer to Table 1.
The maximum frequency to be processed by the amplifiers is also a function of the standard being applied; this, in turn, sets the minimum bandwidth required.
As a rule of thumb, the gain bandwidth product specification of the amplifiers used should be at least five times the required value to maintain linear accuracy over the transmitted signal spectrum. This specification provides an indication of the distortion-free, high speed signal processing capability of the amplifier. Parts with higher bandwidths are even better for preserving excellent gain and phase shift matching over the 1. The slew rate of the amplifiers used is not so critical, because the signal spectrum is typically band-limited by filter networks.
The step response of these filters slows down the rise and fall times of the signals presented to the amplifiers.
However, very fast slew rates are essentially free in wideband amplifier designs. Internal biasing currents charging and discharging internal compensation capacitors and individual node capacitances of the circuit determine the slew rate of an amplifier. To produce a high frequency amplifier, circuit-biasing currents are increased to minimize impedances at critical circuit nodes and small geometry transistor structures are used to minimize stray capacitance.
This results in very fast slew rates for the amplifier as an inherent byproduct of a high gain-bandwidth product characteristic. Faster slew rates ensure very fast dynamic response and reduced signal distortion. Low noise characteristics, together with a wide gain bandwidth capability are most important for the amplifiers used in the receive circuitry. The receiver amplifier should have a noise spectral density in the band between 20kHz and 1MHz lower than this level. Lower noise is required in inverse proportion to the turns ratio of the transformer used to address the attendant reduction in both the noise floor and the received signal.
The amount of signal received is a function of the length of phone line used to make the connection, as shown in Figure 6. This is referred to as the loop length. Very long loop lengths can severely attenuate the transmitted signal, particularly at the higher channel frequencies.
The greater the attenuation of a channel, the fewer data bits can be transmitted in that channel, which affects the overall communication data rate.
As a rule of thumb, a received signal-to-noise ratio of 18dB allows two data bits to be used in a channel. With each 3dB of additional signal above the noise floor, an extra bit of data can be used. With 45dB to 50dB signal-to-noise ratio, a full 12 bits of data can be exchanged in one channel frequency. The next installment in this series will provide the design calculations to determine the minimum requirements for supply voltage, current drive capability and resultant power consumption and dissipation.
In addition, heat management issues will be discussed. Tim enjoys the occasional round of golf. ADSL G. Lite Downstream.
Lite Upstream. Channels Used. Frequency Band kHz. Bandwidth kHz. Line Power dBm. Electrical Requirements. Peak Line Voltage V. Peak-to-Peak Line Voltage V. Peak Line Current mA. As, you might already know that latest version comes with various bugs fixed and one should must update his PC with latest software and drivers to keep enjoying uninterrupted internet. Above all mentioned Huawei dongle drivers can be downloaded from the download link which is provided at the end of the article.
You can also download latest Huawei mobile partner with latest version 5. Download the drivers from the download link which is provided at the end of the article and unzip in a folder.
Connect the modem to the computer and run the file DriverSetup. Download Huawei Modem Drivers v4. Download Huawei Modem Drivers Version 4.
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