ETC CPF105C

Product Specification
CPF105C
File No
RDPS-POTS328
Revision
R2
System Application
Asymmetric Digital Subscriber Line
Product Type
POTS Splitter
Product Name
CPF105C
Date
Aug. 12th, 2002
Issued By
Jason Hung - Design Engineer, R&D_1
jason@ycl.com.tw
Approved By
Roger Wu – Manager, R&D_1
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.
Data sheet subject to change without notice
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Product Specification
CPF105C
Table of contents
Item Description
Page
1.
Introduction
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3
2.
Reference
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3
3.
Abbreviations
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3
4.
Technical requirements
4.1 : Schematic
4.2 : Electrical Specification
4.3 : DC characteristic
4.4 : ZHP-r definition
4.5 : Test methodology
4.5.1 : Insertion loss
4.5.2 : Return loss
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4
4
5
6
6
7
7
7
5.
Environmental condition
5.1 : EMC surge and power contact
5.2 : Climatic condition
5.2.1 : Operating temperature
5.2.2 : Storage and transport
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8
8
8
8
8
6.
Reliability condition
6.1 : Operation
6.2 : Handling
6.3 : Storage and transport
6.4 : product safety
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9
9
9
9
9
7.
Mechanical condition
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10
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Product Specification
CPF105C
1. Introduction:
The CPF105C is a splitter module 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 intracampus. 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 CPF105C integrate low pass filter that block the high frequency energy from reaching the
POTS device and provide isolation from impedance effects of the POTS device on ADSL. In
addition , these 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 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 :
Ref. 2 :
Ref. 3 :
Ref. 4 :
ETS 300 001
Attachment to Public Switched Telephone Network
ANSI T1.413
Network and Customer Installation Interface
ETSI TR 101 728 V1.2.1(2002-05)
ETSI TS 101 952-1-1 V1.1.1
3. Abbreviations:
ADSL
CO
CPE
POTS
RT
Asymmetric Digital Subscriber Line
Central Office
Customer Premise Equipment.
Plain Old Telephone Service
Remote Terminal
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Product Specification
CPF105C
4. Technical requirements:
4.1. Schematic:
The following drawing illustrate the block diagram of this product.
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Product Specification
CPF105C
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.
Electrical requirements
Splitter parameter
Frequency range
Splitter bandwidth
Nominal voice band
Billing tone
Ringing frequency
ADSL band
Line Impedance ZL
CO impedance ZTc
RT impedance ZTr
Modem impedance
Operation voltage voice band
Nominal signal
Billing tone
Ringing signal
Range
30KHz< f< 1104KHz
DC to 16KHz
0.3KHz to 3.4KHz
12KHz±80Hz
15.3Hz to 68Hz
30KHz to 1104KHz
600ohm
600ohm
600ohm
100 ohm
21mVpp to 5.4 Vpp
10Vpp to 30.2Vpp
40Vrms to 150Vrms(113Vpp
to 424 Vpp)
0V to 105V
150Vrms with -105VDC offset
320V
DC voltage
Max. AC voltage
Max. differential
Current voice band
Loop current
Transient current(on/off hook)
values
400msec
DC Resistance
DC Resistance
Isolation resistance tip/ring
<100mA
<150mA
<=25 ohm
>5 Mohm
Voice –band characteristic
Insertion loss
Attenuation distortion
Delay distortion
Return loss
Longitudinal conversion loss LCL
ADSL modem interface
Isolation voltage
ADSL band characteristic
Stop band attenuation
1004Hz
200Hz<f<3.4KHz
3.4Hz<f<4KHz
200Hz<f<4KHz
200Hz< f< 500Hz
500Hz< f< 2KHz
2KHz< f< 3.4KHz
200Hz to 3KHz
<0.3dB
<±0.6 dB
<1.0 dB
<100 usec
>=14 dB
>=18 dB
>=14 dB
>53 dB
>2000Vrms for 1 minute
30KHz<f<1104KHz
Data sheet subject to change without notice
>65 dB
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Product Specification
CPF105C
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 25 ohms . 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. ZHP-r Definition :
ZHP-r is defined to be the impedance presented to the POTS connection by an ATU-R .The
equivalent circuit of ZHP-r is showing Figure.1. The ZH is valid only for voice band
frequencies. The combination of capacitors in the ZH-r is only representative .
0.10µF
100Ohm
0.47mH
0.10µF
Figure 1.
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Product Specification
CPF105C
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 V1 / V2 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. :
600Ω
Low pass
filter
Phone
600Ω
Line
ZHP-r
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 - ZMdB
Where ZL = the reference impedance
ZM = the measured impedance
The test setup is shown in drawing below:
line
phone
LCZ meter
LPF
600ohms
ZM
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Product Specification
CPF105C
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: Uko and POTS(a/b)(indoor lines, twisted
pair , unshielded , L>10m)
No
Test
1 Lightning surge simulation
2 Power induction
3 Power contact
Test specification
1500V , 10/700µs , 200ms
600V , 1s
230V , 15 minute
Number of tests
10
5
1
5.2. Climatic condition:
5.2.1. Operating temperature:
Application
Low ambient temperature
High ambient temperature
(according to ETS 300 019, class 3.2)
indoor
-50C
+450C
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
CPF105C
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
3 axis; every 10 cycles
IEC 68 Part 2-27
≤100kg 100m/ S2 11ms
6 directions; every 3 shocks
Vibration sinusoidal
Shock(half sine)
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
Transport position on concrete floor
Freefall
6.4.Product safety :
Test
Electrical hazard
Mechanical hazard
Fire hazard
Test specification
EN 60950 (A4), (≡VDE 0805)
EN 60950 (A4), (≡VDE 0805)
EN 60950 (A4), (≡VDE 0805)
Data sheet subject to change without notice
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Product Specification
CPF105C
LINE
PHONE
7. Mechanical condition:
DSL
Data sheet subject to change without notice
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