Datasheet CPF105C Datasheet (YCL)

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

Jason Hung - Design Engineer, R&D_1Issued By

[e-mail]

Roger Wu – Manager, R&D_1Approved By

[e-mail]

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 RDPS-POTS328(R2)08/12/2002

SHEET 1 OF 10

Product Specification

CPF105C

Table of contents

Item Description Page

1. Introduction ----------------------------------------------- 3

2. Reference ----------------------------------------------- 3

3. Abbreviations ----------------------------------------------- 3
Technical requirements

4.

4.1 : Schematic ----------------------------------------------- 4

4.2 : Electrical Specification ----------------------------------------------- 5

4.3 : DC characteristic ----------------------------------------------- 6

4.4 : ZHP-r definition ----------------------------------------------- 6

4.5 : Test methodology ----------------------------------------------- 7

4.5.1 : Insertion loss ----------------------------------------------- 7

4.5.2 : Return loss ----------------------------------------------- 7

----------------------------------------------- 4

5. Environmental condition ----------------------------------------------- 8

5.1 : EMC surge and power contact ----------------------------------------------- 8

5.2 : Climatic condition ----------------------------------------------- 8

5.2.1 : Operating temperature ----------------------------------------------- 8

5.2.2 : Storage and transport ----------------------------------------------- 8

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

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 : ETS 300 001 Attachment to Public Switched Telephone Network
Ref. 2 : ANSI T1.413 Network and Customer Installation Interface
Ref. 3 : ETSI TR 101 728 V1.2.1(2002-05)
Ref. 4 : ETSI TS 101 952-1-1 V1.1.1

3. Abbreviations:

ADSL Asymmetric Digital Subscriber Line
CO Central Office
CPE
POTS Plain Old Telephone Service
RT

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Customer Premise Equipment.

Remote Terminal

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 DC to 16KHz
Nominal voice band 0.3KHz to 3.4KHz
Billing tone
Ringing frequency 15.3Hz to 68Hz
ADSL band 30KHz to 1104KHz
Line Impedance ZL 600ohm
CO impedance ZTc 600ohm
RT impedance ZTr 600ohm
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

DC voltage 0V to 105V
Max. AC voltage 150Vrms with -105VDC offset
Max. differential 320V

Current voice band

Loop current <100mA

Transient current(on/off hook)

400msec <150mA

DC Resistance

DC Resistance <=25 ohm
Isolation resistance tip/ring >5 Mohm

Voice –band characteristic

Insertion loss 1004Hz <0.3dB
Attenuation distortion 200Hz<f<3.4KHz

3.4Hz<f<4KHz <1.0 dB
Delay distortion 200Hz<f<4KHz <100 usec
Return loss 200Hz< f< 500Hz >=14 dB

500Hz< f< 2KHz >=18 dB
2KHz< f< 3.4KHz >=14 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 30KHz<f<1104KHz >65 dB

Range values

12KHz±80Hz

to 424 Vpp)

<±0.6 dB

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Product Specification

0

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

.47mH100Ohm

0.10µF

Figure 1.

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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.

Product Specification

CPF105C

:

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:

600Ω

Phone

Low pass
filter

ZHP-r

600Ω

Line

phone

LCZ meter

Z

M

Data sheet subject to change without notice RDPS-POTS328(R2)08/12/2002

LPF

line

600ohms

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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 Test specification Number of tests

1 Lightning surge simulation
2 Power induction 600V , 1s 5
3 Power contact 230V , 15 minute 1

5.2. Climatic condition:

1500V , 10/700µs , 200ms

10

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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CPF105C

6. Reliability condition:

6.1. Operation:

Test Test specification

Vibration sinusoidal

Shock(half sine)

6.2. Handling:

Test Test specification

Freefall

Product 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/ S

6 directions; every 3 shocks

IEC 68 Part 2-32 Stand alone:<10kg

75mm Built in:2x ground area

2

11ms

6.3. Storage and transport:

Test Test specification

Vibration(random) IEC 68 Part 2-64

Bump IEC 68 Part 2-29

Freefall

6.4.Product safety :

Test Test specification
Electrical hazard
Mechanical hazard
Fire hazard

IEC 68 Part 2-32 <10kg 800mm

Twice at any possible

Transport position on concrete floor

EN 60950 (A4), (≡VDE 0805)
EN 60950 (A4), (≡VDE 0805)
EN 60950 (A4), (≡VDE 0805)

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CPF105C

7. Mechanical condition:

Product Specification

LINE

PHONE

DSL

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