Page 1
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 1 OF 11
File No RDPS-MF063
Revision R1
System Application Asymmetric Digital Subscriber Line
Product Type Micro filter
Product Name MF606G
Date Jan . 15rd, 2003
Gino Hung - Design Engineer, R&D_1Issued By
Roger Wu – Manager, R&D_1Approved 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.
Page 2
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
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. HP-r Definition ----------------------------------------------- 7
4.4. DC characteristic: ----------------------------------------------- 7
4.5. Test method: ----------------------------------------------- 8
4.5.1. Insertion loss ----------------------------------------------- 8
4.5.1. 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
Page 3
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 3 OF 11
1. Introduction:
The MF606G is a “in – line” ( on 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 allow 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 on local loops created either
intra-building or intra-campus. 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 POTS-filter on the customer
premises side consists of a lowpass section(installed in a separated plastic box.
The MF606G 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 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 Attachment to Public Switched Telephone Network
Ref. 2 : AS/ACIF S002 : 2001 Analogue interworking and non-interference
requirements for Customer Equipment for connection
to the Public switched Telephone Network
Ref. 3 : ITU-T K21 Resistibility of subscribers terminal to overvoltage
and overcurrents
Page 4
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
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
ADSL-NT Network termination of ADSL
4. Technical requirements:
4.1. Schematic:
The following drawing illustrates the block diagram of this product.
Page 5
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 5 OF 11
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 .
Electrical requirements
Splitter parameters
Range Values
Frequency range
Nominal voice band 0.3KHz to 3.4KHz
Ringing frequency
22Hz ±28Hz
ADSL band 30KHz to 1104KHz
Line Impedance ZL
220ohm + (820ohm || 115nF)
CO impedance ZTc
220ohm + (820ohm || 115nF)
RT impedance ZTr
220ohm + (820ohm || 115nF)
Modem impedance 30KHz< f< 1104KHz 100 ohm
Operation voltage voice band
Nominal signal 21mVpp to 5.4 Vpp
Billing tone 10Vpp to 30.2Vpp
Ringing signal
40Vrms to 80Vrms(113Vpp to
227 Vpp)
DC voltage 0V to -72V
Max. AC voltage 70Vrms with -72VDC offset
Max. differential 190V
Current voice band
Loop current <120mA
Transient current(on/off hook) <400mA
1
Page 6
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 6 OF 11
Electrical requirements
Splitter parameters
Range Values
DC Resistance
DC Resistance <100 ohm
Isolation resistance tip/ring >5 Mohm
Voice –band characteristic
1KHz <1.5 dB
Insertion loss for single splitter
200Hz<f<3.4KHz <3.5dB
1KHz <1.5dB
Insertion loss for with two added
Parallel filters
200Hz<f<3.4KHz <3.5dB
Delay distortion 200Hz<f<4KHz <150u sec
300Hz< f< 2000Hz >=15 dB
Return loss for single splitter
200Hz< f< 3.4KHz >=12 dB
300Hz< f< 2000Hz >=15 dB
Return loss for with two added
Parallel filters
200Hz< f< 3.4KHz >=12 dB
Longitudinal conversion loss LCL 600Hz to 3.4KHz >=45 dB
ADSL modem interface
Isolation voltage >2000Vrms for 1 minute
ADSL band characteristic
Stop band attenuation (with ZHP-r) 30KHz >18 dB
100KHz<f<300KHz >30 dB
300KHz<f<1104KHz >40 dB
Stop band attenuation ( without
ZHP-r )
30KHz >18 dB
100KHz<f<300KHz >30 dB
300KHz<f<1104KHz >40 dB
Loading or ADSL signal path 30KHz<f<1104KHz <0.25dB
Page 7
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 7 OF 11
4.3. ZHP-r Definition:
To facilitate the test of the splitter , the high pass data have to be taken into consideration.
ZHP-r shown below is defined to allow proper termination of the ADSL port during voice
band testing, and ZHP-r is valid only for voice band frequency. ZHP-r is almost the same as
27nF + 470µ H // 100Ω defined inAS/ACIF.
4.4. DC characteristic:
All requirement of this specification can be met in the presence of all POTS loop currents
from 0mA to 120mA. This in line filter can pass POTS tip-to-ring dc voltages of 0V to 72V
and ringing signals of 40V to 80Vrms at any frequency from15.3Hz to 68Hz with a dc
component in the range from 0V to 72V. The dc resistance from tip-to-ring at the line port
interface with the phone interface shorted, shall be less than or equal to 100 ohms for one
filter. 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 to 5 Megohms. The
ground point shall be local building or green wire ground. As an objective , the dc resistance
should exceed 10MΩ.
Page 8
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 8 OF 11
4.5. Test method:
4.5.1. 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 of a device inserted in a given
transmission system mainly caused by internal component resistive loss while all of
the impedance between source , load and device interface having been matched.
To perform the insertion loss measurement ,thru calibration must be done prior the
testing . 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 :
Page 9
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 9 OF 11
4.5.2. Return loss:
Return loss measures the amount of lost energy 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 is a
function of the impedance of the circuit involved and is therefore frequency
dependent.These impedance must be closely maintained in order to reduce the
possibility of undesirable reflection and echoes which occur in long distance circuit
for the telephone user and 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 is shown:
Return loss = 20 log ZL + ZM / ZL - ZMdB Where ZL = the reference impedance
ZM = the measured impedance
Page 10
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 10 OF 11
5. Environmental condition :
5.1. Resistibility to overvoltages and overcurrents :
The splitter has to comply with requirements as per ITU-T K.21.
5.2. Climatic conditions :
5.2.1. Operating temperature :
Application indoor
Long time operation guarantee temperature ( 5 to 40 0C )
Short time operation guarantee temperature ( 0 to 50 0C )
( According to ETS 300 019, class 3.2 )
5.2.2. Storage and transport :
Low ambient temperature - 20 0C
High ambient temperature +85 0C
( According to MIL-STD-202 method 107 )
5.2.3. Operation humidity :
Long time operation guarantee humidity ( 5 to 85 % )
Short time operation guarantee humidity ( 5 to 90 % )
Short time : within 72 continuous hours and 15 days in a year
6. Reliability conditions :
6.1. Thermal shock :
Temperature from -20 °C to +85 °C for 5 cycles
(According to MIL-STD-202 , method 107)
6.2. Temperature humidity exposure :
+50 °C /95RH , 96hrs
(According to MIL-STD-202 , method 103)
6.3. Vibration test :
Random vibration , frequency 5-500Hz , sweep time : 1 hr / axis /
Force : 2.4grams (According to MIL-STD-202 , method 204)
Page 11
Product Specification
MF606G
Data sheet subject to change without notice RDPS-MF063(R1)01/15/2003
SHEET 11 OF 11
7. Mechanical condition:
Note :
1: Connect the line side of the microfilter to the wall jack and the phone side of the
microfilter to the phone.
2: The in-line microfilter does not provide protection against transient noise for multi-line
phone.
3: Unless otherwise specified ,all tolerances are mm(inch)±0.25(0.010)
Loading...