Page 1
Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
SHEET 1 OF 10
File No RDPS-POTS035
Revision R0
System Application Micro Filter For ADSL CPE Side
Product Type POTS Splitter
Product Name MF601UK
Date Jan. 16th, 2002
Bert Lin - 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.
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
SHEET 2 OF 10
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 ----------------------------------------------- 4
4.3. Electrical Specification ----------------------------------------------- 5
4.4 . DC characteristic ----------------------------------------------- 6
4.5 . Test methodology ----------------------------------------------- 6
4.5.1 . Insertion loss ----------------------------------------------- 6
4.5.2 . Return loss
----------------------------------------------- 7
5. Environmental condition ----------------------------------------------- 9
5.1. EMC surge and power contact ----------------------------------------------- 9
5.2. Climatic condition ----------------------------------------------- 9
5.2.1. Operating temperature ----------------------------------------------- 9
5.2.2. Storage and transport ----------------------------------------------- 9
6. Reliability condition ----------------------------------------------- 9
6.1. Operation ----------------------------------------------- 9
6.2. Handling ----------------------------------------------- 9
6.3. Storage and transport ----------------------------------------------- 9
6.4. product safety ----------------------------------------------- 9
7. Mechanical condition ----------------------------------------------- 10
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
SHEET 3 OF 10
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 Attachment to Public Switched Telephone Network
Ref. 2 : ANSI T1E1.4 G.992.2 Network and Customer Installation Interface
Ref. 3 : ITU-T K20 Resistibility of telecommunication switching
Equipment to overvoltages and overcurrents
Ref. 4 : ITU-T K21 Resistibility of subscribers terminal to overvoltage and
overcurrents
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
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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 Requirement :
4.1 . Schematic :
The following drawing illustrate the block diagram of this product.
4.2 . ZHP-r Definition :
To facilitate testing of the inline filter independently of the actual modem or specific
vendor,ZHP-r is defined to allow proper termination of the XDSL 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 :
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
SHEET 5 OF 10
4.3. Electrical Specification :
The low pass filter shall satisfy the following parametric limits with a complex impedance
ZNL shown in this table across the Line side of this device .The following requirement is
specified for a single splitter.
Electrical requirements
Splitter parameter Range values
Frequency range
Splitter bandwith DC to 3.4KHz
Nominal voice band 0.3KHz to 3.4KHz
Billing tone 12KHz±80Hz
Ringing frequency 15.3Hz to 68Hz
ADSL band 30KHz to 1104KHz
Line Impedance ZNL 1330ohm // (348ohm || 0.1µF)
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 150Vrms(113Vpp
to 424 Vpp)
DC voltage 0V to -60V ANSI 6.98
Max. AC voltage 150Vrms with -105VDC offset
Max. differential 320V
Current voice band
Loop current <100mA
Transient current(on/off hook) <150mA
DC Resistance
DC Resistance <=15.0 ohm
Isolation resistance tip/ring >5 Mohm
Voice –band characteristic
Insertion loss <1.0dB
Delay distortion 0.6KHz<f<3.2KHz <100 usec
Return loss single filter @ERL >11.0 dB
@SRLL >13.0 dB
@SRLH >7.0 dB
Longitudinal conversion loss LCL 200Hz to 3KHz >53 dB
ADSL modem interface
Isolation voltage >2000Vrms for 1 minute
ADSL band characteristic
Stop band attenuation 25KHz<f<50KHz >15 dB
50KHz<f<1MHz >25 dB
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
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4.4. 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 10 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.
4.5 . 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 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. :
ZNL-r
LPF
Equipment
ZHP-r
Phone
Line
Remote POTS Splitter
ZTr is normal Termination
in test set
Test
ZTr
600ohm
xDSL
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
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4.5.2 . 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 ZL + ZM / ZL - ZMdB
Where ZL = the reference impedance
ZM = the measured impedance
The test setup is shown in drawing below:
ZNL-r
LPF
Equipment
ZNL-r
ZHP-r
Phone
Line
Remote POTS Splitter
ZTr Return loss reference
impedance
xDS
Test
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
SHEET 8 OF 10
5. Environmental condition:
5.1. EMC , surge and power- contact:
The splitter has to comply with EMC Requirements as per ITU K21, so the following
requirements must be taken into consideration:
No Test Test specification Number of tests
1 Lightning surge simulation
1500V , 10/700µs , 200ms
10
2 Power induction 600V , 1s 5
3 Power contact 230V , 15 minute 1
5.2. Climatic condition:
5.2.1. Operating temperature:
Application indoor
Low ambient temperature -50C
High ambient temperature +450C
(according to ETS 300 019, class 3.2)
5.2.2. Storage and transport:
Low ambient temperature -400C
High ambient temperature +850C
(according to ETS 300 019, transport: class 2.3, storage: class 1.2)
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
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6. Reliability condition:
6.1. Operation:
Test Test specification
Vibration sinusoidal
IEC 68 Part 2-6
10 to 58Hz 0,075mm
58 to 500Hz 10m/S2 ,
1octaver/minute
3 axis; every 10 cycles
Shock(half sine)
IEC 68 Part 2-27
≤100kg 100m/ S
2
11ms
6 directions; every 3 shocks
6.2. Handling:
Test Test specification
Freefall
IEC 68 Part 2-32 Stand alone:<10kg
75mm Built in:2x ground area
6.3. Storage and transport:
Test Test specification
Vibration(random) IEC 68 Part 2-64
Bump IEC 68 Part 2-29
Freefall
IEC 68 Part 2-32 <10kg 800mm
Twice at any possible
Transport position on concrete floor
6.4 . Product safety :
Test Test specification
Electrical hazard EN 60950 (A4), (≡VDE 0805)
Mechanical hazard EN 60950 (A4), (≡VDE 0805)
Fire hazard
EN 60950 (A4), (≡VDE 0805)
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Product Specification
MF601UK
Data sheet subject to change without notice RDPS-MF035(R0)01/16/2002
SHEET 10 OF 10
7. Mechanical condition:
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