MF623A 查看數據表（PDF） - YCL Electronics

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产品描述 (功能)

生产厂家

MF623A

High Speed Digital Services

YCL Electronics  

Product Specification

MF623A

1. Introduction:

The Dual In-Line filter has been specifically designed to implement the functionality of low

pass filter in G.Lite system. G.Lite technology is similar to full rate ADSL in using DMT

technology but operates at a lower data rate of up to 1.5 Mbps downstream and 512 kbps

upstream, depending on line conditions and lengths.

ADSL Lite is proposed as a lower speed version of ADSL that will eliminate the need for

telecom to install and maintain a premise based POTS splitter. Recent field trials of ADSL Lite

equipment jointly carried out by a group of manufacturers and a North America network

operator has proved the technology, achieving maximum data rate for distance up to 15000

feet, It was found necessary to include one or more low pass filters in series with the POTS

terminals in order to reliably achieve maximum data rates. The Dual In-Line filter for phones

or telephone equipment sharing a two-line phone jack. The low pass filters provide protection

from ADSL signal which may impact through non-linear or other effects remote devices

( telephone sets, facsimile machine, answering machine, voice band modem, etc. )

individually or in groups on both line 1 and line 2. It also provides a second Jack that is

unfiltered for connecting ADSL and / or HPN. For ADSL signal, it also provides protection

from the high frequency transients and impedance effects that occur during POTS operation

( ringing transients, on / off hook transients and so on ). This Dual In-Line filter provides one

filtered jack for any single or two-line phone devices.

Because the Dual In-Line filter connects directly to the subscriber loop media, it must also

provide some protection for externally induced line hits or faults which could damage any

attached equipment or endanger humans interacting with the installed equipment. The circuit

protection will be provided mostly by standard central office line protection means and

additional protection measures built into the Dual In-Line filter to protect against line

overstress which could damage the Dual In-Line filter itself. The electrical and transmission

specifications are designed electronically to isolate the high speed DSL and HPN data

streams from the voice band Plain Ordinary Telephone Service ( POTS ). This design

effectively blocks the ADSL, HPN and other radio frequencies up to 10 MHz.

Data sheet subject to change without notice

RDPS-MF060(R0)10/16/2002

SHEET 3 OF 10

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