YCL WMF600A Datasheet
Product Specification
WMF600A
Data sheet subject to change without notice RDPS-MF064(R2)03/18/2003
SHEET 1 OF 15
File No RDPS-MF064
Revision R2
System Application Asymmetric Digital Subscriber Line
Product Type Dual Line in Line Microfilter
Product Name WMF600A
Date Mar. 18th, 2003
Jay Hsieh - Design Engineer, R&D_1Issued By
jay@ycl.com.tw
Roger Wu – Manager, R&D_1Approved By
roger@ycl.com.tw
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.
Product Specification
WMF600A
Data sheet subject to change without notice RDPS-MF064(R2)03/18/2003
SHEET 2 OF 15
Table of contents
Item Description Page
1. Introduction ----------------------------------------------- 3
2. Reference ----------------------------------------------- 3
3. Abbreviations ----------------------------------------------- 4
4.
Technical requirements
----------------------------------------------- 4
4.1. Schematic ----------------------------------------------- 4
4.2. ZHP-r definition ----------------------------------------------- 5
4.3. Electrical specification ----------------------------------------------- 6
4.4. DC characteristics ----------------------------------------------- 8
4.5. Test methods ----------------------------------------------- 9
4.5.1. Insertion loss at 1004 Hz ----------------------------------------------- 9
4.5.2. Attenuation distortion in the voice band ----------------------------------------------- 10
4.5.3. Return loss ----------------------------------------------- 11
5. Environmental conditions ----------------------------------------------- 12
5.1. Resistibility to overvoltages and
overcurrents
----------------------------------------------- 12
5.2 : Climatic conditions ----------------------------------------------- 12
5.2.1. Operating temperature ----------------------------------------------- 12
5.2.2. Storage and transport ----------------------------------------------- 12
5.2.3. Operation humidity ----------------------------------------------- 12
6. Reliability conditions ----------------------------------------------- 13
7. Mechanical conditions ----------------------------------------------- 14
7.1. Outline dimension ----------------------------------------------- 14
7.2. Pin assignment ----------------------------------------------- 15
Product Specification
WMF600A
Data sheet subject to change without notice RDPS-MF064(R2)03/18/2003
SHEET 3 OF 15
1. Introduction:
The In-Line Microfilter 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.
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 transients and impedance effect that occur during POTS operation ( ringing
transients, on-hook, off-hook transients and so on ). Because the Microfilter 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 filter to
protect against line overstress which could damage the filter itself.
2. Reference:
Ref. 1 : ETS 300 001 Attachments to the Public Switched Telephone Network
(PSTN); General technical requirements for equipment
connected to analogue subscriber interface in the PSTN.
Ref. 2 : ANSI T1.413 Network and Customer Installation Interfaces Asymmetric Digital Subscriber Line (ADSL) Metallic
Interface
Ref. 3 : ITU-T G.992.1 Asymmetrical Digital Subscriber Line (ADSL) Transceiver
Ref. 4 : T1E1.4/2001-007R3 In-Line Filter Standard
Ref. 5 : ITU-T K.21 Resistibility of Telecommunication Equipment Installed
in Customer Premises to Overvoltages and Overcurrents
Ref. 6 : ITU-T K.44 Resistibility tests for telecommunication equipment exposed
to overvoltages and overcurrents-Basic Recommendation
Product Specification
WMF600A
Data sheet subject to change without notice RDPS-MF064(R2)03/18/2003
SHEET 4 OF 15
3. Abbreviations:
ADSL Asymmetric Digital Subscriber Line
CO Central Office
CPE Customer Premise Equipment
POTS Plain Old Telephone Service
RT Remote Terminal
ADSL-NT Network termination of ADSL
4. Technical requirements:
4.1. Schematic:
The following drawing illustrate the schematic of this product.
RJ-11
Plug
RJ-11
Jack
Phone 1
Line
LPF
LPF
RJ-11
Jack
DSL
RJ-11
Jack
Phone 2
Product Specification
WMF600A
Data sheet subject to change without notice RDPS-MF064(R2)03/18/2003
SHEET 5 OF 15
4.2. ZHP-r Definition:
To facilitate testing of the In-Line Filter independently of the actual modem or specific
vendor,ZHP-r is defined to allow proper termination of the Line port during voice band
testing. The ZHP-r is valid only for voice band frequency. The combination of capacitors in
the ZHP-r is only representative. The input shall be 27nF however derived. ZHP-r
equivalent circuit is shown below.
0.056 uF
0.056 uF
0.47 mH
100 ohms
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