Electronics Lab Philippines

telecommunications problem

Offline chicobulilit

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telecommunications problem
« on: July 10, 2011, 11:31:51 AM »
Good day po mga sir....

may tatanong lang po kasi ako... meron po kasi na binigay na design problem ung proff namin....

we are to connect two buildings 400 subscribers each using t1 connection....

ano2 po ung mga needed na gamit para mapag connect sila....

0.015 erlangs.subscriber
3.++km ang layo nila...
"there is always a better plan"

Offline gorex

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Re: telecommunications problem
« Reply #1 on: April 05, 2012, 04:03:21 PM »
T1 sa USA ginagamit sa atin sa Pilipinas yung e1. T1 o DS1. In  SDH  synchronous digital heirarchy. nag sisimula sa stm1 which is equivalent to 64 E1. gamitan mo ng stm 1 . 4 na stm 1 then connect to multiplexer . EDFA  amplifier .ang medium fiber optics cable 1 transmit 1 receive.or electrical interface ba coaxial.
We use negative feedback in audio amplifiers to stabilize the gain, increase the bandwidth,lower the output impedance and lower the non-linear distortion.