YCL MF608B Datasheet
Product Specification
MF608B
Data sheet subject to change without notice RDPS-MF036(R4)02/26/2003
SHEET 1 OF 11
File No RDPS-MF036
Revision R4
System Application Asymmetric Digital Subscriber Line
Product Type Micro filter
Product Name MF608B
Date Feb. 26th, 2003
Feilong Chen - Design Engineer, R&D_1Issued By
Feilong@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
MF608B
Data sheet subject to change without notice RDPS-MF036(R4)02/26/2003
SHEET 2 OF 11
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. Electrical specification ----------------------------------------------- 5
4.3. DC characteristic ----------------------------------------------- 7
4.4.ZHP-r definition ----------------------------------------------- 7
4.4. Test methodology ----------------------------------------------- 8
4.4.1. Insertion loss ----------------------------------------------- 8
4.4.2. Return loss ----------------------------------------------- 9
5 Environmental condition
----------------------------------------------- 10
5.1. Resistibility to overvoltage and
overcurrents
----------------------------------------------- 10
5.2. Climatic condition
----------------------------------------------- 10
5.2.1. Operating temperature
----------------------------------------------- 10
5.2.2. Storage and transport
----------------------------------------------- 10
5.2.3. Operating humidity
----------------------------------------------- 10
6 Reliabilty conditions
----------------------------------------------- 10
6.1.Thermal shock
----------------------------------------------- 10
6.2. Temperature humidity exposure
----------------------------------------------- 10
6.3. Vibration test
----------------------------------------------- 10
7. Mechanical condition ----------------------------------------------- 11
Product Specification
MF608B
Data sheet subject to change without notice RDPS-MF036(R4)02/26/2003
SHEET 3 OF 11
1. Introduction:
The MF608B is a “in – line” ( or distributed ) filter that has been specifically designed to
implement the functionality of low pass filter in POTS over ADSL application .
Asymmetric Digital Subscriber Line (ADSL) technology is dedicated , point to point , public
network access technology that allows multiple forms of data , voice , and video to be carried
over twisted-pair copper wire on the local loop between a network service provider’s(NSP’S)
central office and the customer site or within intra-campus / intra-building networks. Best of
all , ADSL delivers this high speed performance over existing copper telephone line all while
allowing traditional voice service to coexist without interruption through POTS low pass filters.
The MF608B integrates low pass filter that blocks the high frequency energy from reaching
the POTS device and provides isolation from impedance effects of the POTS device on ADSL.
In addition , this filter will also attenuate any wideband impulse noise generated by the POTS
device due to the interruption of loop current(e.g. pulse dialing or on hook / off hook
transfer)Because the POTS filter connects directly to the subscriber loop media , it must
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 Attachment to Public Switched Telephone Network
Ref. 2 : SIN 346 Issue 2.1 BT ADSL INTERFACE DESCRIPTION
Ref. 3 : K21 Resistibility of subscribers terminal to overvoltages
and overcurrents.
Ref. 4 : ITU G992.1 Annex E Type1 - European
3
Product Specification
MF608B
Data sheet subject to change without notice RDPS-MF036(R4)02/26/2003
SHEET 4 OF 11
3. Abbreviations:
ADSL Asymmetric Digital Subscriber Line
CO Central Office
CPE Customer Premise Equipment.
POTS Plain Old Telephone Service
RT Remote Terminal
4. Technical requirements:
4.1. Schematic:
The following drawing illustrate the schematic of this product.
3
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