1、ETSI TR 101 953-1-3 1.1.2(2003-06) Technical Repor Access network xDSL transmission filters; Part 1 : ADSL splitters for European deployment; Sub-part 3: Testing methods for ADSLASDN splitters 2 ETSI TR 101 953-1-3 VI .I .2 (2003-06) Reference RTR/TM-06027-1-3 Keywords ADSL, ISDN, splitter, testing,
2、 xDSL ETSI 650 Route des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Important notice Individual copies of the present docume
3、nt can be downloaded from: http:lwmv.etsi .arq The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of disput
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5、I documents is available at ha p:/pa rta I. etsi I a rgltbistat uslstatus .as p If you find errors in the present document, send your comment to: Cori vriaht Notifica tion No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to repr
6、oduction in all media. O European Telecommunications Standards Institute 2003. All rights reserved. DECTTM, PLUGTESTSTMand UMTSTMare Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its M
7、embers. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI 3 ETSI TR 101 953-1-3 VI .I .2 (2003-06) Contents Intellectual Property Rights . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Foreword Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 1 2 3 3.1 3.2 4 5 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.8.1 Scope . References . . . .6 Definitions and abbreviations. .
10、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 6 6 Void. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Test conditions and general notes . . . . . . . . . . . . . . . . .
12、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Test cases for ADSL over ISDN-BA splitters . . . .9 . 9 12 13 15 19 21 n) . .23 . . 25 . . . . 25 Definitions . . . . .
13、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Insertion loss in the pass band (ISDN-BA) Return loss in the pass band (ISDN-BA) Delay distortion in the pass band
14、 (ISDN-BA) Isolation (insertion loss) at 150 kHz to 1 104 kHz . Unbalance about Earth . Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Impedance at the ISDN port between 2 MHz and 10 MH
15、z DC requirements . . DC resistance to Earth 6.8.2 . . 27 6.8.3 29 6.9 . . . . 30 Annex A: Bibliography 34 History . . . . 35 Isolation resistance between A-wire and B-wire DC series resistance . . Insertion loss requirements for the high pass part ETSI 4 ETSI TR 101 953-1-3 VI .I .2 (2003-06) Intel
16、lectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR O00 3 14: “Intellectual Property Rig
17、hts (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (5). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out b
18、y ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by ETSI Technical Committee Tra
19、nsmission and Multiplexing (TM). The present document is part 1, sub-part 3 of a multi-part deliverable supporting different aspects of European Specific DSL splitters, as identified below: Part 1: “ADSL splitters for European deployment“; Sub-part 1 : Sub-part 2: “Specification of Testing methods f
20、or Low Pass part of ADSL/POTS splitters“; “Testing methods for High Pass part of ADSL/POTS splitters“; Sub-part 3: “Testing methods for ADSL/ISDN splitters“; Part 2: NOTE: “VDSL splitters for European deployment“. The choice of a multi-part format for this deliverable is to facilitate maintenance an
21、d future enhancements. I n t rod uct ion The present document describes test methods for the low pass part and the high pass part of ADSL/ISDN-BA splitters. The test methods of the present technical report are based on requirements of different documents describing ADSL/ISDN-BA splitters: TS 101 952
22、-1-3 5: “Specification of ADSL/ISDN Splitters“; TS 101 388 i: “Transmission and multiplexing (TM); Access transmission systems on metallic access cables; Asymmetric Digital Subscriber LINE (ADSL) - European specific requirements ITU-T Recommendation G.992.1 modified“. The proposed test cases for ADS
23、L over ISDN-BA splitters are put together. The requirements from TS 101 952-1-3 5 are assessed to be the “essential“ or minimum tests. The additional tests that are required in other standards have been assessed as “optional“ tests. There are two columns in each test matrix which inform about the “e
24、ssential“ and the “optional“ tests. For each test, the document describes: title of the test; purpose of the test; reference to the specifications; test configuration; ETSI 5 rest setup; rest parameters; rest results matrix; measuring notes. ETSI TR 101 953-1-3 VI .I .2 (2003-06) ETSI 6 ETSI TR 101
25、953-1-3 VI .I .2 (2003-06) 1 Scope The present document describes test methods for ADSL/ISDN splitters. These splitters are intended to be installed at the Local Exchange side of the local loop and at the user side near the NTP. In the case of splitters at the user side, the present document describ
26、es testing methods for the master splitter that is intended for use at the demarcation point of the customer premises. 2 Re fe re n ces For the purposes of this Technical Report (TR) the following references apply: il ETSI TS 101 388: “Transmission and Multiplexing (TM); Access transmission systems
27、on metallic access cables; Asymmetric Digital Subscriber LINE (ADSL) - European specific requirements ITU-T Recommendation G.992.1 modified“. ITU-T Recommendation G.992.1: “Asymmetric digital subscriber line (ADSL) transceivers“. ITU-T Recommendation G.992.3 : “Asymmetric digital subscriber line (AD
28、SL) transceivers - 2 (ADSL2)“. ETSI TBR 038: “Public Switched Telephone Network (PSTN); Attachment requirements for a terminal equipment incorporating an analogue handset function capable of supporting the justified case service when connected to the analogue interface of the PSTN in Europe“. ETSI T
29、S 101 952-1-3: “Access network xDSL transmission filters; Part 1: ADSL splitters for European deployment; Sub-part 3 : Specification of ADSL/ISDN splitters“. 21 31 41 51 3 3.1 Definitions and abbreviations De fi nit ions For the purposes of the present document, the following term and definition app
30、lies: A-wire and B-wire: wires in the 2-wire local loop connection provided from the exchange to the NTP 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ADSL CPE dBm dBV DUT emf HPNA I ISDN-BA ITU LE NF NTP POTS R TE Asymmetric Digital Subscriber LINE C
31、ustomer Premises Equipment Absolute power level expressed in decibels relative to 1 mW Absolute voltage level expressed in decibels relative to 1 Volt Device Under Test electromotive force Home Phoneline Networking Alliance Current Integrated Services Digital Network-Basic Access International Telec
32、ommunication Union Local Exchange (Central Office) Narrow-b and Frequency Network Termination Point Plain Old Telephone Service Resistance Terminal Equipment (e.g. Telephone, Fax, voice band modem etc.) ETSI 7 ETSI TR 101 953-1-3 VI .I .2 (2003-06) U Voltage Z Impedance 4 Void 5 Test conditions and
33、general notes For each test, feeding bridge and holding circuit must comply with the requirements as specified in TBR 038 4 with respect to the low frequency range. Similar performance is required for the high frequency range (up to 1 MHz). An equivalent accuracy may be obtained by calibrating the f
34、eeding bridge and holding circuit across the relevant frequency range. a a e e Feeding bridge Test connection e e b b Signal insertion I DC insertion I I A Figure 1: External circuitry for feeding bridge Holding circuit Figure 2: External circuitry for holding circuit General notes: Direction of the
35、 feeding current may impact the additional insertion loss caused by feeding bridge and holding circuit. A calibratiodnormalization measurement needs to be taken before each single measurement step. When a test is proposing “alternating polarity“ the test should be performed in a way that the directi
36、on of the feeding current is changed from test to test (e.g. when a test is to be performed with O mA, 20 mA, 60 mA, 80 mA using alternating polarity the test should be performed with +O mA, -20 mA, +60 mA, -80 mA). The connection of the DC feeding is essential, i.e. for LE splitters the feeding bri
37、dge should be connected to the ISDN port and the holding circuit should be connected to the LINE port. For TE splitters the feeding bridge should be connected to the LINE port and the holding circuit should be connected to the ISDN port. The feeding arrangements shown in the test setups in the prese
38、nt document are generally for testing TE splitters. ETSI 8 ETSI TR 101 953-1-3 VI .I .2 (2003-06) The inaccuracy of the measurement which results from tolerances in the test setup and its containing equipment should be carefully considered. When giving a verdict on the test results with respect to t
39、he requirement in the related standard this tolerance in the test results need to be taken into account. Before splitters are tested the class of splitter should be categorized. Basis for this could be the schematic of the splitter or a statement of the manufacturer. The following classes have been
40、identified so far in the course of this project: passive: splitters which do exclusively contain passive components; passive with current/voltage detection: splitters which perform NF filtering using passive components, which are enhanced by detection circuits based on the DC voltage andor the DC cu
41、rrent; active: splitters which contain active components (like OP amplifier) to perform the NF filtering. NOTE: The splitters which have been evaluated during the validation of the test methods described herein are to be classified in cluster “passive“ splitters. No “active“ or “passive with current
42、/voltage detection“ splitters could be made available for evaluation. The results of the STF 215 work could be validated for the first class, for the second and third class (active splitters) theoretical test case validations have been discussed. At some test cases, a difference can be made between
43、splitters which do not break the DC path and splitters which do break the DC path. The following drawings should give guidance for the separation of these two different types: I- I - Active filtering I -r coupling 0 T Figure 3: Example for a splitter not breaking the DC path filte- ring Power sink S
44、ource - I Figure 4: Example for a splitter breaking the DC path Filters with current/voltage detection must be classified under the first type of splitter for their operating range (e.g. DC current above detection limit) and under the second type of splitter in the blocking range (e.g. DC current be
45、low detection limit). ETSI 9 ETSI TR 101 953-1-3 VI .I .2 (2003-06) Test case name: Refe re n ce : Test purpose: 6 Test cases for ADSL over ISDN-BA splitters The test cases described include: insertion loss in the pass band (ISDN) TS 101 952-1-3 5, clause 6.3 to evaluate the insertion loss in the pa
46、ss band (ISDN-BA) when tested with the test 6.1 insertion loss in the pass band (ISDN-BA); return loss in the pass band (ISDN-BA); delay distortion in the pass band (ISDN-BA); isolation (Insertion loss) at 150 kHz to 1 104 kHz; unbalance about earth; noise; impedance at the ISDN port between 2 MHz a
47、nd 10 MHz (HPNA protection); DC resistance to earth; isolation resistance between A-wire and B-wire; DC series resistance; insertion loss requirements for the high pass part. Insertion loss in the pass band (ISDN-BA) Table 1: Description of the insertion loss in the pass band (ISDN-BA) test case Ipa
48、rameters as given in the related standards Isee test setup; DUT not configured Test config u ration : ETSI 10 Feeding bridge ETSI TR 101 953-1-3 VI .I .2 (2003-06) a a Holding Test setup: a LINE Feeding bridge a a Splitter Holding Signal circuit ISDN (DUT) Parameter Level of the test signal Us Frequ
49、ency of the test signal Us Combination of source and load Impedances Termination at ADSL: ZT-ADSL Level of feeding voltage Value of feeding current Figure 5: Test setup for insertion loss testing on a splitter Value -10 dBm 1 kHz to 80 kHz combination 1 : Z, = 135 Q; Zload = 135 Q; RDC = 470 Q (2B1 Q) combination 2: z, = 150 Q; Zload = 150 Q; RDC = 470 Q (4B3T) ZT-ADSL = open circui
