MF602F_技术文档

Product Specification

MF602F

File No

RDPS-MF033

Revision

R1

System Application

Product Type

Product Name

Date

Mirco Filter For ADSL CPE Side

Micro filter

MF602F

Mar . 04^th, 2002

Issued By

Kevin Lee - Design Engineer, R&D_1

kevin@ycl.com.tw

Roger Wu – Manager, R&D_1

roger@ycl.com.tw

Approved By

Issued Date

YCL Electronics Co., Ltd.

No.95, Feng Jen Road. Feng Shan City, Kaohsiung, Taiwan, R.O.C.

This controlled document is the property of YCL Electronics Co., Ltd. Any duplication

reproduction or transmission by unauthorized parties without the prior written

permission of YCL Electronics Co., Ltd. is prohibited.

Data sheet subject to change without notice

RDPS-MF017(R1)03/04/2002

SHEET 1 OF 11

Product Specification

MF602F

Table of contents

Item Description

Page

1. Introduction

2. Reference

3. Abbreviations

-----------------------------------------------

3

4

-----------------------------------------------

4. Technical requirements

4.1. Schematic

-----------------------------------------------

4

5

6

8

4.2. Electrical specification

4.3. DC characteristic

4.4. Test methodology

4.4.1. Insertion loss

4.4.2. Return loss

5. Environmental condition

5.1. EMC , surge and power- contact

5.2. Climatic condition

-----------------------------------------------

9

5.2.1. Operating temperature

5.2.2. Storage and transport

6. Reliability condition

6.1. Operation

-----------------------------------------------

10

6.2. Handling

6.3. Storage and transport

6.4. Product safety

7. Mechanical condition

7.1. Mechanical

-----------------------------------------------

11

7.2. Connector in formation

Data sheet subject to change without notice

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SHEET 2 OF 11

Product Specification

MF602F

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. 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 G.992.2

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

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Product Specification

MF602F

3. Abbreviations:

ADSL

CO

Asymmetric Digital Subscriber Line

Central Office

CPE

Customer Premise Equipment.

Plain Old Telephone Service

Remote Terminal

POTS

RT

ADSL-NT

Network termination of ADSL

4. Technical requirements:

4.1. Schematic:

The following drawing illustrates the block diagram of this product.

Jack

Plug

RJ11

LINE

RJ11

PHONE

Filter

Data sheet subject to change without notice

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Product Specification

MF602F

4.2.Electrical specification:

The low pass filter shall satisfy the following parametric limits with a complex impedance ZL

shown in this table across the Line side of this device .

The following requirement is specified for a single splitter and with three added parallel

filters.

Electrical requirements

Splitter parameter

Range

values

Frequency range

Splitter bandwith

DC to 4KHz

Nominal voice band

Ringing frequency

ADSL band

0.3KHz to 3.4KHz

15.3Hz to 68Hz

30KHz to 1104KHz

Line Impedance ZL

CO impedance ZTc

RT impedance ZTr

Modem impedance

Operation voltage voice band

Nominal signal

270ohm + (750ohm || 150nF)

100 ohm

30KHz< f< 1104KHz

21mVpp to 5.4 Vpp

40Vrms to 150Vrms(113Vpp

to 424 Vpp)

Ringing signal

DC voltage

0V to -60V ANSI 6.98

150Vrms with -105VDC offset

320V

Max. AC voltage

Max. differential

Current voice band

Loop current

<100mA

<150mA

Transient current(on/off hook)

DC Resistance

<=25 ohm

>5 Mohm

Isolation resistance tip/ring

Voice –band characteristic

Data sheet subject to change without notice

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SHEET 5 OF 11

Product Specification

MF602F

Electrical requirements

Splitter parameter

Range

values

Insertion loss single filter

1004Hz

<1.0dB

Attenuation relative to 1004Hz 300Hz<f<4KHz

Insertion loss with five filters 1004Hz

Attenuation relative to 1004Hz 300Hz<f<4KHz

<±1.0 dB

<2.0dB

<4.6 dB

Delay distortion

200Hz<f<4KHz

200 Hz <f<500Hz

500Hz<f<2KHz

2KHz<f<3.4KHz

200Hz<f<500Hz

500Hz<f<2KHz

2KHz<f<3.4KHz

<100 usec

>=14.0dB

>=18.0dB

>=14.0dB

>=8.0dB

>=6.0dB

Return loss single filter

Return loss with five filters

Isolation voltage

>2000Vrms for 1 minute

ADSL band characteristic

Stop band attenuation

25KHz<f<50KHz

50KHz<f<1MHz

>15 dB

>25 dB

>58 dB

>53 dB

Longitudinal conversion loss LCL 200Hz<f<1KHz

1KHz<f<3.4KHz

Data sheet subject to change without notice

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SHEET 6 OF 11

Product Specification

MF602F

4.3 : DC characteristic :

All requirement of this specification can be met in the presence of all POTS loop currents

from 0mA to 100mA. This in line filter can pass POTS tip-to-ring dc voltages of 0V to 105V

and ringing signals of 40V to 150Vrms at any frequency from15.3Hz to 68Hz with a DC

component in the range from 0V to 105V. The dc resistance from tip-to-ring at the line port

interface with the phone interface shorted, shall be less than or equal to 15 ohms for one

splitter.The DC resistance from tip-to-ground and from ring-to-ground at the POTS interface

with the U-R interface open shall be greater than or equal to5 Megohms. The ground point

shall be local building or green wire ground. As an objective , the DC resistance should

exceed 10MΩ.

4.4 : Test method :

4.4.1 : Insertion loss :

The insertion loss of a device connected into a given transmission system is defined as

the ratio, expressed in dB, of the load power available(before and after insertion )

delivered to the output network beyond the point of insertion at a given frequency.In

general , the insertion loss is defined as the ratio, expressed in dB of the power delivered

to a load with the circuit in place and the power delivered to a load without the circuit in

place.The added insertion loss shall be measured using the test up in figure 3. For

measuring POTS band insertion loss for single filter module also a single filter wit four

added parallel load filters.General Insertion loss equation can be expressed as following

Insertion loss = 20 log V2 / V1 dB where

V1 = the measured voltage value of load without LPF in circuit.

V2 = the measured voltage value of load with LPF in circuit.

The test setup is shown in drawing below. :

Remote POTS Splitter

Line

Test

Equipment

Phone

ZL

LPF

ZL

Load#1 LPF

Load#4 LPF

ZL is normal Termination

in test set

Data sheet subject to change without notice

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Product Specification

MF602F

4.4.2 : Return loss :

Return loss measure the amount of energy that is lost due to reflection which resulted

from impedance mismatching at the interface. Return loss is essentially defined as the

ratio of the power incident upon a given transmission system to the power reflected

caused by impedance mismatch with respect to reference impedance at the interface

between source and device.Return loss figure are a function of the impedance of the

circuit involved and are therefore frequency dependent.

These impedance must be closely maintained in order to reduce the possibility of

undesirable reflection and echoes which in long distance circuit the telephone user or

destroy the data being sent.To perform the return loss test ,open ,short, load calibration

must be done prior measurement while the LCZ impedance Analyzer being selected in

impedance mode. Return loss is general expressed in decibels. General Return loss

equation as below:

Return loss = 20 log Z_L+ Z_M/ Z_L- Z_MdB

Where Z_L= the reference impedance

Z_M= the measured impedance

The test setup is shown in drawing below:

Remote POTS Splitter

Line

Phone

Test

Equipment

ZL

LPF

ZL

Load#1 LPF

Return loss reference

Load#4 LPF impedance

Data sheet subject to change without notice

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SHEET 8 OF 11

Product Specification

MF602F

5. Environmental condition:

5.1. EMC , surge and power- contact:

The splitter has to comply with EMC Requirements as per ITU-T K21, so the following

requirements must be taken into consideration:

No.

1

Test item

Lightning surge simulation

Power induction

Test specification

1500V , 10/700µs ,200ms

600V, 1s

Number of tests

10

5

2

3

Power contact

230V , 15 minutes

1

5.2. Climatic condition:

5.2.1. Operating temperature:

Application

indoor

-5⁰C

+45⁰C

Low ambient temperature

High ambient temperature

(according to ETS 300 019, class 3.2)

5.2.2. Storage and transport:

Low ambient temperature

High ambient temperature

-20⁰C

+85⁰C

(according to ETS 300 019, transport: class 2.3, storage: class 1.2)

Data sheet subject to change without notice

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SHEET 9 OF 11

Product Specification

MF602F

6. Reliability condition:

6.1. Operation:

Test

Test specification

IEC 68 Part 2-6

10 to 58Hz 0,075mm

58 to 500Hz 10m/S²,

1octaver/minute

Vibration sinusoidal

Shock(half sine)

3 axis; every 10 cycles

IEC 68 Part 2-27

≤100kg 100m/ S²11ms

6 directions; every 3 shocks

6.2. Handling:

Test

Test specification

IEC 68 Part 2-32 Stand alone:<10kg

75mm Built in:2x ground area

Freefall

6.3. Storage and transport:

Test

Vibration(random)

Bump

Test specification

IEC 68 Part 2-64

IEC 68 Part 2-29

IEC 68 Part 2-32 <10kg 800mm

Twice at any possible

Freefall

Transport position on concrete floor

6.4. Product safety:

Test

Test specification

Electrical hazard

Mechanical hazard

EN 60950 (A4), (≡VDE 0805)

Fire hazard

EN 60950 (A4), (≡VDE 0805)

Data sheet subject to change without notice

RDPS-MF017(R1)03/04/2002

SHEET 10 OF 11

Product Specification

MF602F

7. Mechanical condition:

7.1. Mechanical :

Unless otherwise specified , all tolerance are mm±0.25

7.2. Connector in formation :

Function

Line

Phone

Style

RJ 11 Plug

RJ 11 Jack

Tip

Pin 3

Ring

Pin 4

Data sheet subject to change without notice

RDPS-MF017(R1)03/04/2002

SHEET 11 OF 11


型号：	MF602F
厂家：	ETC
描述：	Mirco Filter For ADSL CPE Side 的Mirco过滤器对于ADSL CPE端过滤器
文件：	总11页 (文件大小：58K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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