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9a59bf1c9aa411ca8e1b30580a48a39d | 101 844 | 7.3.1 Analogue advisory notes | As per the agreement reached at TC AT #3 please refer to clause 5.3, which confirms the procedure adopted for new advisory notes. A single index document tracking all analogue advisory notes will be maintained as ETSI TR 103 000-1 [1] with a copy available directly from the Technical Activities public area of the ETSI ... |
9a59bf1c9aa411ca8e1b30580a48a39d | 101 844 | 7.3.2 Digital advisory notes | As per the agreement reached at TC AT #3 please refer to clause 5.3, which confirms the procedure adopted for new Advisory notes. A single index document tracking all digital advisory notes will be maintained as TR 103 050 [2], with a copy available directly from the Technical Activities public area of the ETSI web sit... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 1 Scope | The present document presents the study on CB 27 MHz radio compatibility with analogue television broadcast receiver installations. In order to avoid the near field measurement at 27 MHz using reference antennas intended for 50 MHz and more (because the radiated field measurements below 30 MHz are not normally specifie... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 2 References | The following documents contain provisions that, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 3 Definitions, symbols and abbreviations | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 3.1 Definitions | For the purposes of the present document, the following terms and definitions apply: Anechoic chamber: a closed room with internal lining to minimize RF reflections as well as external radiation and noise and thus simulating the RF conditions of unobstructed free-field. Antenna factor: the factor that allows to known, ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 3.2 Symbols | For the purposes of the present document, the following symbols apply: Af Antenna factor D Distance in metres dB decibel dBi decibel relative to an isotropic radiator dBm decibel relative to one mW dBµV decibel relative to one µV dBµV/m decibel relative to one µV/m E Electric field G Gain GHz Gigahertz kHz kilohertz MH... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 3.3 Abbreviations | For the purposes of the present document, the following abbreviations apply: ac alternating current AF Audio Frequency Afn Factor value of antenna n AM Amplitude modulation (A3E) B I Band I, for television broadcasting in the VHF range between 47 and 68 MHz B II Band II, for FM radio broadcasting in the VHF range betwe... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 4 Calibration of a CB antenna for reference use | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 4.1 CB antenna to calibration purpose for reference use | In order to produce an EM field of a known value at 27 MHz for compatibility tests on apparatus or installations, a reference antenna has been used. Taking into account that there is no small size antenna, for handling purposes, nor calibrated one working on this frequency band, an existing shortened dipole intended fo... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 4.2 Antenna calibration method | The calibration method has been in accordance with ANSI C63.5 [1], and the three-antenna method has been used. |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 4.3 Results | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 4.3.1 Gain of the CB antenna | Table 1: Antenna factor and antenna gain of three CB dipoles Horizontal polarization Frequency Af1 Af2 Af3 G1 G2 G3 MHz dB dB dB dBi dBi dBi 26,515 10 10 10 -11 -11 -11 27,205 8 9 9 -9 -10 -10 27,855 9 10 10 -10 -11 -11 Vertical polarization Frequency Af1 Af2 Af3 G1 G2 G3 MHz dB dB dB dBi dBi dBi 26,515 12 12 12 -13 -1... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 4.3.2 Measurements check up | The gain of antenna 2 has been checked by comparison on the antenna 1, using a reference antenna, see Figure 1. h1 h2 Antenna 1 Antenna 2 D RF Generator Spectrum Analyser The frequency is 27,205 MHz. Height h 1 and h 2 are identical (2 m). Distance D = 10 m. Antenna 1 is the transmitter and antenna 2 is the receiver. T... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 4.4 Comments | The antenna gain deduced by the three-antenna method is -10 dB. Using the reference antenna method it is found to be -10 dB also. In conclusion, these results are considered coherent and are used as the basis for further measurements. |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5 Test on different parts of TV-FM radio installations | 5.1 Gain at 27 MHz of TV and FM radio reception antennas |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.1.1 TV and FM radio antennas for testing purposes | • TV antenna VHF Band I • TV antenna UHF Band IV-V • FM radio antenna VHF Band II bi-polarization horizontal and vertical. ETSI ETSI TR 101 837 V1.1.2 (2000-12) 11 |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.1.2 Measurements method and test conditions | The method to measure the gain at 27 MHz of the TV and FM antennas is in accordance with ANSI C63.5 [1], clause 6. The only working frequency is 27,205 MHz, because it has been deduced that the gain of TV and FM antennas at 27 MHz does not vary excessively on a range of ± 670 kHz (from 26,515 MHz to 27,855 MHz) around ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.1.3 Results | Table 3: Antenna factor and gain at 27 MHz of TV and FM radio antennas Antennas 27 MHz EM field lighting TV and FM antennas RF level delivered by the antenna Af G dBµV/m dBµV/75 ΩΩΩΩ dB dBi Horizontal polarization of the antennas TV VHF B I 109 99 10 -11 TV UHF 109 92 17 -18 FM radio B II 109 93 16 -17 Vertical polariz... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.1.4 Comments | The gain of these TV and FM antennas at 27 MHz appears to be high. Indeed, taking the immunity EM field level of 125 dBµV/m (in accordance with CISPR 20 [2]), these antennas may deliver a level at 27 MHz which is too high compared with the limits of input immunity of TV receivers in accordance with EN 55020 [3], clause... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.2 27 MHz RF level delivered by the TV antenna | The aim of this test is to evaluate the mechanism of coupling between the electromagnetic field developed by CB installation and a single TV installation. The test estimates the maximum coupling to a TV installation produced by a CB fundamental frequency (27 MHz) or harmonic frequencies. |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.2.1 TV antenna and equipment for testing purposes | To realize a typical electromagnetic environment, the products as follows have been used: • The signal source was an old CB set, installed in a car with a CB antenna on the roof (1,5 m above the ground), working at frequency of 27,205 MHz. • Receiver TV installation: a measured truck with a typical TV antenna mounted o... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.2.2 Measurement method and test conditions | • First, the RF output power of the CB transmitter at frequencies 27,205 MHz and its harmonics were measured with the CB equipment set on a 50 Ωload. • Second, a typical configuration of electromagnetic disturbances between a CB installed in a car and a TV installation with an antenna on a mast was simulated. • Third, ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.2.3 Results | The measured fundamental RF output power of the CB transceiver set used is 35,5 dBm. The harmonic levels measured at 50 Ωload on the RF output connector of the CB equipment is given in Figure 2. The level measured at 75 Ωload on the TV antenna connector at 27,205 MHz signal and its harmonics are given in Table 6. ETSI ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.2.4 Comments | No significant level of harmonics at user connector TV set. Only the fundamental frequency of 27 MHz appeared at the antenna connector. In consequence, all compatibility tests have done to check the effects of the fundamental frequency of 27 MHz. |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3 Induced RF 27 MHz on the TV antenna cable | Testing the coaxial cable immunity requires high important equipment in accordance with UTE C 90-130 [4]. It has been considered that it is not necessary to measure the screening efficiency of a 75 Ωcoaxial cable, usually provided by the manufacturer. However its behaviour in an EM field at 27 MHz should be verified, u... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3.1 Non ground referenced load cable | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3.1.1 Measurement method and test conditions | As the RF induced by coupling to the central conductor is directly proportional to its length, tests were carried out on a section of cable of length λ/2 (λ = 11 m) in order to find the maximum induction effect of the 27 MHz EM field. The 5,5 m coaxial cable total, terminated in a 75 Ωresistive load, was stretched out ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3.1.2 Results | Table 7: 27 MHz RF level collected by a non ground referenced TV cable Polarization of the transmission antenna Measurements Maximum collected level dBµV/75 ΩΩΩΩ Vertical & Horizontal Spectrum analyser alone with a charge adapted to the inlet No signal above the internal noise of the analyser Horizontal Without ground ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3.2 Ground referenced load cable | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3.2.1 Measurement method and test conditions | The cable was still set out 2 m above the floor, but this time the ground was linked to the reference plane beside the spectrum analyser and the end resistive load was 75 Ω. The distance between the cable under test and the transmission antenna was 10 m, as specified in subclause 5.3.1 (see Figure 4). The EM field stre... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3.2.2 Results | Table 8: 27 MHz RF level collected by a ground referenced TV cable Polarization of the transmission antenna Measurement Maximum collected level dBµV/75 ΩΩΩΩ Vertical & Horizontal Spectrum analyser alone with a charge adapted to the inlet No signal above the internal noise of the analyser Horizontal Without ground break... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.3.3 Comments | Results show that the cable only develops a small signal at 27 MHz in comparison with the levels obtained from the TV and FM antennas terminals. In fact, the most significant result in Table 3 is the level of 99 dBµV, while it is only 58 dBµV in Table 8. The real difference is 41 dB (ratio of 100 approximately). On the... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4 Immunity of TV and FM radio antenna amplifiers to 27 MHz | This test has been carried out to measure the true bandwidth and characteristics of real TV and FM radio antenna amplifiers and also to check their immunity on a real site in the presence of a 27 MHz EM field. |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.1 Bandwidth and selectivity | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.1.1 Antenna amplifiers for testing purpose | Four TV and FM radio amplifiers, with a “power supply” as it has been provided by manufacturers, were powered by 24V. TV – FM antenna amplifier 1: - Wide band amplifier 47 - 862 MHz TV B I, B III, B IV-V and FM radio B II - Two-way connector VHF - UHF - Gain 27 dB TV - FM antenna amplifier 2: - Wide band amplifier 47 -... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.1.2 Measurements method and test conditions | Each amplifier was powered by its own power supply. The coaxial cable was of the same type as the one tested before (subclause 5.3) and the various lengths were reduced to a strict minimum. The amplifiers, which have adjustable gain, were adjusted for maximum gain. RF signal generator 0~1 GHz Adapter 50 to 75 Ω Power S... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.1.3 Results | The RF bandwidths of the antenna amplifiers are shown in Figures 6 to 13 hereafter. Measurement conditions and results are quantified in embedding notes to the Figures. Summarized gain results are given in Table 9. ETSI ETSI TR 101 837 V1.1.2 (2000-12) 18 Input level - 40 dBm RBW 300 KHz Scan 0 ∼∼∼∼50 MHz Ref. Level - ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.1.4 Comments | First of all it was noted that the measured gains are essentially the same (to within a few dB) as the gains advertised by the manufacturers. On the other hand, the rejection or attenuation of the 27 MHz frequency is non-existent in two amplifiers; which amplify themselves the 27 MHz RF level received: - The wide band ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.2 External immunity to a surrounding 27 MHz EM fields | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.2.1 Antenna amplifier for testing purpose | This measurement has been targeted at the amplifier that produces the highest gain at the frequency of 27 MHz. This is the wide-band amplifier 1 (see Figures 6 and 7 and Table 9). |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.2.2 Measurement method and test conditions | Measurements on external immunity to surrounding fields require the use of a Transverse Electromagnetic Mode (TEM) cell in undisturbed surroundings. The incident 27 MHz EM field was generated in the TEM cell by the signal from the 27 MHz generator, AM modulated at 80% depth by an 1 kHz audio frequency. The level of the... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.2.3 Results | Table 10: Delivered levels at the antenna amplifier output Frequency HF-VHF-UHF Generator MHz Output level at TV frequencies (TVf) dBµV/75 ΩΩΩΩ Intermodulation products frequency (TVf + 27 MHz) Output level at 27 MHz dBµV/75 ΩΩΩΩ TVf/27 MHz ratio dB 27 - - 49 - 176 74 203 1 73 472 74 499 16 58 600 74 627 14 60 In order... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.2.4 Comments | Regarding the 27 MHz level measured at the amplifier output (49 dBµV), this level is very weak given its direct gain at the same frequency by conduction (23 dB) see Table 9. It was noted that TV antenna amplifier is not in compliance with the related standard. However, this was not the purpose of the measurement. NOTE:... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.3 External immunity to 27 MHz signal through the connection cable | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.3.1 Antenna amplifiers for testing purpose | Initially, the following antenna amplifiers described in 5.4.1.1 were taken for this test: • TV antenna amplifier 3 • TV antenna amplifier 4 • TV-FM antenna amplifier 1 |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.3.2 Measurements method and test conditions | The injection of an unwanted signal in the connected cables of a device, using a suitable injection network by conduction, simulates the effects of induced RF unwanted signals on the cables in a real installation. The normal layout and measurements method were in accordance with EN 55020 [3]. The signal injections were... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.3.3 Results | Table 12: Delivered levels at the antenna amplifier output Sets under test Frequency VHF-UHF generator MHz Output level at TV frequencies (TVf) dBµV/75 ΩΩΩΩ Intermodulation products frequency (TVf + 27 MHz) Output level at 27 MHz dBµV/75 ΩΩΩΩ TVf/27 MHz ratio dB Amplifier 3 176 60 203 < 0 > 60 600 60 627 < 0 > 60 Ampli... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.3.4 Comments | The level of the intermodulation product of 0 dBµV corresponds to the noise level on the spectrum analyser. The reading dynamics were 60 dB, which is the limit prescribed by the standard. It can not therefore be said that there is no intermodulation product, but it simply stated that the protection ratio is above 60 dB... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.3.5 Complementary measurements | It was decided to proceed in a different manner from that described in EN 55020 [3], injecting the unwanted 27 MHz signal not by means of injection networks, but directly into the amplifier, thereby preventing parasitic couplings. The test layout and cabling was carried out as shown in Figure 16. IN OUT Coaxial Cable 1... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.4.3.6 Comments | The conformity of the external immunity of this product with the current conducted along the connection cables in the strict methodology described by the applicable standard EN 55020 [3] has been noted. Also, the 27 MHz level that this amplifier brings to its output (101 dBµV/75 Ω) seems too high in order to achieve el... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5 TV sets immunity test with a 27 MHz signal by conduction | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.1 Laboratory test | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.1.1 Measurement method and test conditions | Three different television sets were used. A colour bar generator was used to provide a TV signal of 70 dBµV in Band I and 74 dBµV in Band III and also in Band IV-V. The 27 MHz generator was AM modulated to a depth of 80% by a 1 kHz AF signal as prescribed in EN 55020 [3]. According to the results in reported in subcla... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.1.2 Results | Table 13: TV sets immunity levels to 27 MHz signals in laboratory Test 27 MHz RF level to causing perceptible picture degradation TV sets frequency Differential mode Common mode MHz dBµV/75 ΩΩΩΩ dBµV emf. Ch 02 B I Ch 08 B III Ch 55 B V Ch 02 B I Ch 55 B V 26,515 107 106 106 142 142 TV set 1 27,205 102 103 104 135 135 ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.1.3 Comments | The laboratory test confirms that picture degradation occurs in the presence of a 27 MHz unwanted signal (at a few dB more or less) on the three TV bands. But the standard EN 55020 [3] doesn’t set limits in the UHF bands IV and V (see Table 4 in subclause 5.1.4). This behaviour could be produced by intermodulation phen... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.2 Test in a real TV receiving site with a 27 MHz AM signal | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.2.1 Measurement method and test conditions | Nine different television sets and five video tape recorders were used for this test. In order to maintain the coherence of the procedure used to evaluate the picture degradation (see Figure 18) the test was performed in accordance with ITU-R Recommendation BT. 500-7 [7]. The method used to measure the internal immunit... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.2.2 Results | Table 14: TV and video tape recorders set immunity level to 27 MHz in a real site Test number Conditions of the TV installation Apparatus under test Year of purchase Useful signal levels dBµV/75 27 MHz level for picture degradation dBµV 27 MHz level for sound degradation dBµV 1 Private installation with antenna amplifi... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 5.5.2.3 Comments | At first, it was verified that the picture degradation level was higher than sound degradation. In any case, whenever there is picture degradation, it occurred in all channels of UHF and VHF band. Similarly, the degree of the picture degradation was constant. Overall, when the degradation was visible on the TV screen, ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.1 Test in free field measurements site | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.1.1 Materials for testing purpose | With the materials tested in subclauses 5.1 and 5.4, four TV installations has been set up and tested one by one: - Installation 1. VHF + UHF + FM radio antennas + coupling + wide band amplifier 1 - Installation 2. VHF + UHF antennas + coupling + amplifier 2 - Installation 3. VHF + UHF antennas + coupling + amplifier 3... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.1.2 Measurement method and test conditions | The level of the EM field at 27 MHz, as in previous tests, was set at 109 dBµV/m and the frequency at 27,205 MHz. The gain of the antenna amplifiers was adjusted to a maximum and they were powered by their own supply voltage. The behaviour of the cable system was checked by replacing the antennas by a 75 Ωresistor. The... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.1.3 Results | Table 15: 27 MHz RF level delivered by four complete TV installations (in dBµV/75 ΩΩΩΩ) TV installation 1 TV installation 2 TV installation 4 TV installation 3 TV Bands I – II – III – IV - V I – III – IV - V III – IV - V III – IV - V 27 MHz delivered level for a109 dBµV/m EM field 112 82 53 57 27 MHz extrapolated level... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.2 Test on real conditions in a residence site | |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.2.1 Measurements method and test conditions | With materials tested in subclauses 5.1 and 5.4, two TV installations have been set up and tested. The most susceptible amplifier was used in both installations. - Installation 1: VHF + UHF + FM radio antennas + coupling + wide band amplifier 1. - Installation 2: VHF + FM radio antennas + wide band amplifier 1. The ant... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.2.2 Results | Table 16: 27 MHz RF level delivered by two complete TV installations (in dBµV/75 ΩΩΩΩ) TV installation 1 TV installation 2 TV bands I – II – III – IV - V III 27 MHz delivered level for a EM field of 125 dBµV/m 117 111 |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.3 Immunity synthesis of 20 complete TV installations | The three columns on the right, on Table 17, give the RF level at 27 MHz as it was measured at the antenna input of the TV. The crosses are the elements, previously tested and reported in previous clauses, used in each installation. Table 17: TV set input level at 27 MHz in dBµV/75 ΩΩΩΩby combining the elements tested ... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 6.4 Comments | Shaded 27 MHz levels on Table 17 are those which exceed the limits of immunity for televisions, specified in EN 55020 [3], clause 9.2. The measurements of the 27 MHz, collected in subclauses 6.1 and 6.2, allowed to establish by extrapolation the value of 134 dBµV/75 Ω, when an installation with UHF/VHF/FM antennas + co... |
0b65f17d34df32636d06a71cb257c693 | 101 837 | 7 Conclusions | The data contained in the present document enables some conclusions to be drawn as to the disturbance that will be experienced by a TV receiver installation when subjected to a 27 MHz EM field. One significant element studied in the present document is the signal level received at 27 MHz on the wall antenna connector. ... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 1 Scope | The present document defines the specification development process to be used to ensure the TIPHON project develops coherent specifications in a timely manner. The present document is applicable to members of the TIPHON project, working group chairs, work item rapporteurs and the TIPHON Project Management Committee. It... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 2 References | The following documents contain provisions that, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 3 Definitions and abbreviations | |
9938488b58173ed9636eef5cfa289651 | 101 835 | 3.1 Definitions | For the purposes of the present document, the following terms and definitions apply: Step: discrete phase of major activity within the process. RDS: focussed piece of work that is undertaken to explore requirements that are not sufficiently clear. |
9938488b58173ed9636eef5cfa289651 | 101 835 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: ISDN Integrated Services Digital Network RDS Requirements Definition Study TIPHON Telecommunications and Internet Protocol Harmonization Over Networks TR ETSI Technical Report TS ETSI Technical Specification ETSI ETSI TR 101 835 V1.1.1 (2000-0... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 4 Overview of the TIPHON process | The TIPHON project considers a wide range of complex technology issues arising from the inter-working of differing and independently evolving network technologies. The TIPHON process therefore comprises two distinct stages. The first stage is concerned with establishing a fixed set of requirements to be worked on and i... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 4.1 TIPHON Release Schedule | The TIPHON project shall work towards its goals from clearly stated and expressed requirements derived from three sources; the TIPHON project scope, the TIPHON scenarios and specific market requirements. Where an aspect relevant to the TIPHON project cannot be clearly stated or is insufficiently understood from these t... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 4.2 Step A - Release Definition | As shown in Figure 2, a TIPHON Release shall be constructed from a set of qualified requirements that can be progressed through to a coherent and focussed set of specifications of the necessary quality within an acceptable period of time. The Release definition shall comprise a statement of the top-level topics to be a... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 4.6 Step E - Technology Mapping and Verification | Once completed, the interface definitions are then mapped into the technologies supported by that release of the TIPHON project. This is achieved by providing an appropriate profile of the technology for a given interface, as shown in Figure 7. Where a technology fully meets the requirements for a specific interface, a... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 5 Deliverables for TIPHON Releases | Each step of the TIPHON process will have one or more associated deliverables that contribute to the formal TIPHON Release documentation set. To assist identification, it is recommended that the title of each document start with "TIPHON Release n: ", where n is the number of the TIPHON release. Note that in the followi... |
9938488b58173ed9636eef5cfa289651 | 101 835 | 5.1 Deliverables for Step A | Step A comprises: • Release Definition (TR) • Release Plan (TIPHON Permanent Document) |
9938488b58173ed9636eef5cfa289651 | 101 835 | 5.2 Deliverables for Step B | Step B comprises: • Service Capability Definition (TR) • Service Independent Requirements Definition (Release Specific and Core requirements) (TR) |
9938488b58173ed9636eef5cfa289651 | 101 835 | 5.3 Deliverables for Step C | Step C comprises: • Functional Architecture Definition (TR) • Information Flow and Reference Point Definitions (TS) |
9938488b58173ed9636eef5cfa289651 | 101 835 | 5.4 Deliverables for Step D | Step D comprises: • Protocol Framework definition (TR) • Interface Protocol Requirements definitions (TS) • Management Framework definition (TR) • Management Process Requirements definitions (TS) |
9938488b58173ed9636eef5cfa289651 | 101 835 | 5.5 Deliverables for Step E | Step E comprises: • Technology Mappings (TS) • Technology Compliance Specifications (TS) • Security Analysis and Compliance Specification (TR) • Release Protocol Implementation Conformance Specifications (TS) ETSI ETSI TR 101 835 V1.1.1 (2000-07) 14 Annex A: Requirements Definition Studies A.1 Introduction Requirements... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 1 Scope | The present document describes test methods for the low pass section of VDSL/POTS 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 describes test methods for the master ... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 2 References | For the purposes of this Technical Report (TR) the following references apply: [1] ETSI TS 101 270 (all parts): "Transmission and Multiplexing (TM); Access transmission systems on metallic access cables; Very high speed Digital Subscriber Line (VDSL)". [2] ETSI TS 101 952-2-1: "Access network xDSL transmission filters;... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 3 Definitions and abbreviations | |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 3.1 Definitions | For the purposes of the present document, the following terms and definitions apply: A-wire and B-wire: wires in the 2-wire local loop connection provided from the exchange to the NTP on-hook: state of the POTS equipment at either end of a POTS loop connection when the NTP terminal equipment is in the quiescent state N... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: ADSL Asymmetric Digital Subscriber Line CO Central Office (Local Exchange) CPE Customer Premises Equipment dBm absolute power level expressed in decibels relative to 1 mW dBmp absolute power level weighted psophometrically dBV absolute voltage... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 4 Introduction | The present document is part 2 of a multi-part deliverable supporting different aspects of European Specific DSL splitters. It has been produced based on the activities of ETSI STF 248. The current document describes test methods for the low pass part of VDSL/POTS splitters. The test methods of this Technical Report ar... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 5 Test conditions and general notes | For each test, feeding bridge and holding circuit must comply to the requirements as specified in TBR 038 [9] with respect to the low frequency range. Similar performance is required for the high frequency range (up to 12 MHz). An equivalent accuracy may be obtained by calibrating the feeding bridge and holding circuit... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.1 Tests for DC requirements | |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.1.1 Tests for DC resistance to earth | Table 1 Test case name: DC Resistance to Earth Reference: TS 101 952-2-1 [2], clause 6.2.1 Test purpose: To evaluate the DC resistance between a-wire and earth as well as b-wire and earth. This test only applies to splitters which provide a terminal which is connected to ground. (see note) Test configuration: See Test ... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.1.2 Tests for DC insulation resistance between A-wire and B-wire | Table 4 Test case name: DC Insulation resistance between a-wire and b-wire (open ports) Reference: TS 101 952-2-1 [2], clause 6.2.2 Test purpose: To evaluate the DC series resistance between a-wire and b-wire of the various ports when all the ports are left open Test configuration: See Test Set-up; DUT not configured T... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.1.3 Tests for DC series resistance | Table 7 Test case name: DC series resistance Reference: TS 101 952-2-1 [2], clause 6.2.3 Test purpose: To evaluate the DC series resistance between wires at the LINE port, and the wires at the POTS port with an open circuit applied to the VDSL port Test configuration: See Test Set-up; DUT not configured ETSI ETSI TR 10... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.2 Tests for ringing frequency requirements | |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.2.1 Tests for voltage drop at 25 Hz and 50 Hz | Table 10 Test case name: Voltage Drop at 25 Hz and 50 Hz Reference: TS 101 952-2-1 [2], clause 6.3.1 Test purpose: To measure the voltage drop at 25 Hz and 50 Hz when tested with the test parameters as given in the related standards Test configuration: See Test Set-up; DUT not configured ETSI ETSI TR 101 953-2-1 V1.1.1... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.2.2 Tests for impedance at 25 Hz and 50 Hz | Table 13 Test case name: Impedance at 25 Hz and 50 Hz Reference: TS 101 952-2-1 [2], clause 6.3.2 Test purpose: To evaluate the splitter return impedance at 25 Hz and 50 Hz when tested with the test parameters as given in the related standards Test configuration: See Test Set-up; DUT not configured Test set-up: V IC VL... |
a50743195260ac292f7030d619921a78 | 101 953-2-1 | 6.2.3 Tests for total harmonic distortion at 25 Hz and 50 Hz | Table 17 Test case name: Total Harmonic Distortion at 25 Hz and 50 Hz Reference: TS 101 952-2-1 [2], clause 6.3.3 Test purpose: To evaluate the splitters ability to transfer ringing signals without significant distortion Test configuration: See Test Set-up; DUT not configured ETSI ETSI TR 101 953-2-1 V1.1.1 (2003-12) 1... |
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