MF609A 查看數據表（PDF） - YCL Electronics

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MF609A

Micro Filter For ADSL CPE Side

YCL Electronics  

Product Specification

MF609A

1. Introduction:

The in-Line Micro 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 1.5Mbps downstream and 512Kbps

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 premises based POTS splitter. Recent field trials of DSL 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. For POTS voice band service , the

low pass filter provide protection from ADSL signal which may impact through non-line or

other effects remote devices(handset, fax, voice band modem etc)and central office

operation . For ADSL signal , it also provide protection from the high frequency transient and

impedance effect that occur during POTS operation(ringing transients , on-hook, off-hook

transient and so on).

Because the POTS splitter 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 pots splitter to protect against line overstress which

could damage the splitter itself.

2. Reference:

Ref. 1 : ETS 300 001

Ref. 2 : ANSI T1E1.4 In-Line

Filter standard

Ref. 3 : ITU-T K21

Attachment to Public Switched Telephone Network

Network and Customer Installation Interface

Resistibility of subscribers terminal to overvoltage and

overcurrents

Data sheet subject to change without notice

RDPS-MF038(R0)01/23/2002

SHEET 3 OF 12

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