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Can be enhanced. The repeater works at the physical layer of the OSI and is the center of all nodes on the LAN, and its role is to amplify the signal, compensate for the signal attenuation, and support long-distance communication. The repeater works at the physical layer, but only plays the role of extending the transmission distance, and is transparent to the higher-layer protocol.
In fact, a network connected by repeaters is equivalent to a larger network made up of the same wire. Repeaters can also connect networks of different transmission media (10base 5 and 10base 2) and are mostly used in the interconnection of the same LAN above the data link layer.
Repeaters can play a role in signal amplification, but in Ethernet, the 543 principle needs to be observed, that is, only a maximum of 4 repeaters can be used to form 5 network segments, but only 3 network segments can be connected to a computer. Therefore, if you want to enhance the signal, you can only increase the number of repeaters on the road, but not more than 4, otherwise the network will not work normally.
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Repeaters only play the role of signal amplification, but in Ethernet, you need to comply with the 543 principle, that is, you can only use a maximum of 4 repeaters to form 5 network segments, but only 3 network segments can be connected to the computer. Therefore, if you want to extend the distance, you can only increase the number of repeaters on the road, but not more than 4, otherwise the network will not work normally.
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Summary. Hello dear! Repeater amplification signal principle:
The repeater, also known as the first device, is mainly to shape and amplify the signal and then go out, so as to eliminate the distortion and attenuation caused by noise or other reasons after the signal passes through a long length of cable, so that the waveform and strength of the signal can reach the required requirements, and then expand the distance of network transmission. The principle is signal regeneration (rather than simply amplifying the attenuated signal), and the repeater has two ports, and data is input from one port and sent from the other. The port only acts on the electrical part of the signal, regardless of whether there is incorrect data or data that is not suitable for the network segment.
How does a repeater amplify a signal?
Hello dear! Repeater amplification signal principle: repeater, also known as the first device, the main function is to shape and amplify the signal and then go out, in order to eliminate the distortion and attenuation caused by noise or other reasons after the signal passes through a long section of cable, so that the waveform and strength of the signal can reach the required requirements, and then expand the distance of network transmission.
The principle is signal regeneration (rather than simply amplifying the attenuated signal), and the repeater has two ports, and data is input from one port and sent from the other. The port only acts on the electrical part of the signal, regardless of whether there is incorrect data or data that is not suitable for the network segment.
What is the process of signal regeneration?
Hello dear! Signal regeneration: The process of processing a damaged signal, removing noise interference, and restoring the damaged part of the signal is called signal regeneration.
Do I need an amplification circuit inside a repeater?
Hello dear! The repeater needs an amplification circuit. An amplification circuit is installed in the repeater to amplify the signal power to prevent the deterioration of the communication signal and ensure that the communication quality does not deteriorate.
What exactly is the amplification circuit? Optocoupled?
Hello dear! The basic amplifier circuit consists of transistors, resistors, power supplies, coupling capacitors, and loads. The amplification circuit is generally divided into several stages, but no matter what, if you use resistor-capacitance components, the upper and lower circuits will always occur or more active and less mutually inhibiting and influencing each other, and the main function of the amplification circuit is to increase the output power of the signal, which can be regarded as an adjustable output power supply to obtain a stronger output signal than the input signal.
Photocoupler is an electrical-optical-to-electrical conversion device that transmits electrical signals through light. Thank you!
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The influencing factors are, 1, the speed of the original network.
2. The quality of the network cable.
3. The quality of the repeater and the quality of the hardware.
The repeater is the connected device on top of the network physical layer. It is suitable for the interconnection of two types of networks that are identical, and the main function is through the retransmission and transmission of data signals.
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