Page 1
Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 1 OF 9
File No RDPS-POTS408
Revision R2
System Application
POTS/ISDN Filter for ADSL
Product Type POTS/ISDN Splitter
Product Name CPF101IG
Date Apr. 04, 2003
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
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 2 OF 9
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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4
4
Technical requirements
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4
4.1. Schematic
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4
4.2. Z
ADSL-I
definition
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5
4.3. Electrical specification
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6
4.3.1. ISDN requirements
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6
4.3.2. POTS requirements
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7
5 Environmental condition
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8
5.1. Resistibility to overvoltage and
overcurrents
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8
5.2. Climatic condition
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8
5.2.1. Operating temperature
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8
5.2.2. Storage and transport
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8
5.2.3. Operating humidity
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8
6 Reliabilty conditions
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8
6.1.Thermal shock
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8
6.2. Temperature humidity exposure
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8
6.3. Vibration test
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8
7 Mechanical design
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7.1. PCB dimension
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Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 3 OF 9
1. Introduction:
The CPF101IG is a splitter card that has been specifically designed to implement the
functionality of low pass filter in ISDN-BA with 2B1Q or 4B3T baseband linecodes over ADSL
application. The CPF101IG integrates low pass filters that block the high frequency energy
from reaching the ISDN-BA device and provide isolation from impedance effects of the
ISDN-BA device on ADSL. Because the ISDN 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 splitter to protect against line
overstress which could damage the splitter itself. The electrical and transmission
specification is based on both ETSI TS 101 952-1-3 V1.1.1 and ETSI TR 101 728 V1.2.1 for
ISDN-BA requirements and POTS requirements, respectively.
2. References:
Ref. 1 : ETS 300 019
Environmental conditions and environmental tests for Telecommunications
equipment
Ref. 2 : ETSI TS 101 388 V1.2.1
Transmission and Multiplexing ( TM ); Access transmission systems on metallic
access cables; Asymmetric Digital Subscriber Line ( ADSL )−European specific
requirements [ ITU-T G.992.1 modified ]
Ref. 3 : ETSI TS 101 952-1-3 V1.1.1
Specification of ADSL / ISDN splitters
Ref. 4 : ETSI TS 102 080 V1.3.2
Transmission and Multiplexing ( TM ); Integrated Services Digital Network ( ISDN )
basic rate access; Digital transmission system on metallic local lines
Ref. 5 : ETSI TR 101 728 V1.2.1
Study for the specification of low pass filter section of POTS / ADSL splitters
Ref. 6 : ITU-T Recommendation G.961
Digital transmission system on metallic local lines for ISDN basic rate access
Ref. 7 : ITU-T Recommendation K.21
Resistibility of telecommunication equipment installed in a telecommunication
centre to overvoltages and overcurrents
2
2
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Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
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3. Abbreviations:
ADSL Asymmetric Digital Subscriber Line
ISDN-BA Integrated Services Digital Network−Basic Access
2B1Q Baseband linecode for ISDN-BA ( 4-PAM )
4B3T ( or MMS43 ) Alternative ISDN-BA baseband linecode with higher frequency
spectrum than 2B1Q
CO Central Office
CPE Customer Premise Equipment
LT Line Termination
NT Network Termination
LCL Longitudinal Conversion Loss
LPF Low Pass Filter
POTS Plain Old Telephone Service
4. Technical requirements:
4.1.Schematic:
A block diagram of this product is graphically illustrated as below.
2
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Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 5 OF 9
4.2. Z
ADSL-I
definition:
In many of the tests with ISDN-BA frequencies, the ADSL port of the splitter is terminated
with an impedance called Z
ADSL-I
. This impedance model as shown in figure 1, represents
the input impedance of the ADSL transceiver as seen from the ADSL port of the splitter,
and does not include the blocking capacitors. The model is intended for splitter
specification in the context of the present document. The purpose of this model impedance
is for splitter specification, it is not a requirement on the input impedance of the ADSL
transceiver.
Note: Z
ADSL-I
does not include the blocking capacitors CB =27 nF
Figure 1. Schematic diagram of the impedance Z
ADSL-I
for verifying
requirements of the low pass filter
2
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Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 6 OF 9
4.3. Electrical specification:
4.3.1. ISDN requirements:
Electrical requirements
Splitter parameters
Range Values
ISDN band ( 3dB bandwidth ) DC to 94 kHz
Nominal impedance
Line impedance Z
LT
135 ohms / 150 ohms
CO impedance ZTc 135 ohms / 150 ohms
RT impedance ZTr 135 ohms / 150 ohms
Modem impedance 100 ohms
DC requirements
DC feeding current < 60 mA
DC series resistance < 12.5 ohms
Isolation resistance between
A-wire and B-wire
120 V > 5 M ohms
DC resistance to earth 120 V > 20 M ohms
ISDN related requirements
1 kHz to 40 kHz < 0.8 dB
2B1Q
( 135 ohms )
40 kHz to 80 kHz < 2.0 dB
1 kHz to 60 kHz < 1.2 dB
Insertion Loss
4B3T
( 150 ohms )
60 kHz to 80 kHz < 2.0 dB
1 kHz to 40 kHz > 16 dB
2B1Q
( 135 ohms )
40 kHz to 80 kHz > 14 dB
1 kHz to 60 kHz > 16 dB
Return Loss
4B3T
( 150 ohms )
60 kHz to 80 kHz > 14 dB
300 Hz to 30 kHz > 40 dB
30 kHz to 1104 kHz > 46 dB
Unbalance about earth
1104 kHz to 5 MHz > 40 dB
Delay distortion 100 Hz to 80 kHz < 20 usec.
Isolation requirements 150 kHz to 1104 kHz > 65 dB
Noise 138 kHz to 1104 kHz < -125 dBm / Hz
ADSL related requirements
120 kHz to 170 kHz < 3 dB
ADSL insertion loss
170 kHz to 1104 kHz < 1 dB
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Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 7 OF 9
4.3.2. POTS requirements:
Electrical requirements
Splitter parameters
Range Values
Nominal voice band 300 Hz to 3.4 kHz
Nominal impedance
Line Impedance Z
L
200 Hz to 4 kHz 270 ohms+(750 ohms//150 nF)
CO impedance ZTc 200 Hz to 4 kHz 270 ohms+(750 ohms//150 nF)
RT impedance ZTr 200 Hz to 4 kHz 270 ohms+(750 ohms//150 nF)
Modem impedance 160 kHz to 1104 kHz 100 ohms
POTS operating voltage
Nominal signal 21 mVp-p to 5.4 Vp-p
Pulse metering 10 Vp-p to 30.2 Vp-p
Ringing signal < 100 Vrms
Ringing frequency 25 / 50 Hz
DC voltage < 78 V
Max. AC voltage 100 Vrms with 78 VDC offset
Max. differential 220 V
DC requirements
DC resistance to earth 100 V > 20 Mohms
DC resistance between
A-wire and B-wire
100 V > 5 Mohms
DC series resistance < 50 ohms
DC feeding current < 80 mA
POTS related requirements
Insertion loss @ 1 kHz < 1 dB
Insertion loss distortion 200 Hz to 4 kHz < ± 1 dB
300 Hz to 3.4 kHz > 12 dB
Return loss
3.4 kHz to 4 kHz > 8 dB
50 Hz to 600 Hz > 40 dB
600 Hz to 3.4 kHz > 46 dBUnbalance about earth
3.4 kHz to 4 kHz > 40 dB
200 Hz to 600 Hz < 250 usec.
600 Hz to 3.2 kHz < 200 usec.Group delay distortion
3.2 kHz to 4 kHz < 250 usec.
Pulse metering 12 / 16 kHz ± 1% in 200 ohms < 3 dB
2
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Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 8 OF 9
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)
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Product Specification
CPF101IG
Data sheet subject to change without notice RDPS-POTS408(R2)04/04/2003
SHEET 9 OF 9
7. Mechanical condition:
7.1. PCB dimension :
Notes :
1. Unit : mm
2. Tolerance :
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