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f968701d34274f489f6c9983c6c42197 | 100 027 | 4.10.3.1 Calibration of the acoustic coupler | a) The acoustic coupler should be mounted close to the EUT which, if necessary, should be mounted in a Test Fixture. A direct electrical connection to the terminals of the output transducer should be made. A signal generator should be connected to the receiver input (or to the Test Fixture input). The signal generator ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 5 Setting up for conducted measurements | This clause is relevant to conducted measurements only, i.e. those tests which can be made using a direct 50 Ω connection to the EUT. Bit stream measurements should be performed on the "raw" bit stream thus by-passing error correcting coders or decoders unless it is impossible to disassociate one from the other. Messag... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6 Setting up for Radiated tests | This clause details procedures, test equipment arrangements and recommendations that should be carried out BEFORE any of the radiated test methods given in subclauses 7.2 (for transmitting EUTs) and 8.2 (for receiving EUTs) are performed. Some of these schemes are common to all types of test site, others are relevant t... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.1 For all types of test site | The test methods given in subclauses 7.2 and 8.2 apply to integral antenna devices only i.e. EUTs not fitted with either a permanent or a temporary external antenna connector. The Spurious emissions test also applies to EUTs with a detachable antenna. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.1.1 Verification of the test site | No test should be carried out on a test site which does not possess a valid certificate of verification. The verification procedures for all the different types of test site considered in clauses 7 and 8 (i.e. Anechoic Chamber, Anechoic Chamber with a ground plane, Open Area Test Site, Stripline and Test Fixture) are g... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.1.2 Preparation of the EUT | The manufacturer should supply information about the EUT covering the operating frequency, polarization, supply voltage(s) and the reference face. Additional information, specific to the type of EUT should include, where relevant, carrier power, channel spacing, whether different operating modes are available (e.g. hig... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.1.3 Power supplies to the EUT | All tests should be performed using power supplies wherever possible, including tests on EUT designed for battery-only use. In all cases, power leads should be connected to the EUT's supply terminals (and monitored with a digital voltmeter) but the battery should remain present, electrically isolated from the rest of t... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.1.4 Volume control setting for analogue speech tests | Unless otherwise stated, in all receiver measurements for analogue speech the receiver volume control where possible, should be adjusted to give at least 50 % of the rated audio output power. In the case of stepped volume controls, to volume control should be set to the first step that provides an output power of at le... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.2.1 Range length | The range length for these types of test facility should be adequate to allow for testing in the far-field of the EUT i.e. it should be equal to or exceed: ( ) 2 1 2 2 d d + λ where: d1 is the largest dimension of the EUT/dipole after substitution (m); d2 is the largest dimension of the test antenna (m); λ is the test ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.2.2 Site preparation | The cables for both ends of the test site should be routed horizontally away from the testing area for a minimum of 2 m (unless, in the case both types of Anechoic Chamber, a back wall is reached) and then allowed to drop vertically and out through either the ground plane or screen (as appropriate) to the test equipmen... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.2.3 Standard antennas | In the frequency band 30 MHz to 1 000 MHz, except where stipulated, both test and substitution/measuring antennas should be tuned half-wavelength dipoles (constructed as detailed in ANSI C63.5 (1988) [11]) aligned for the same polarization. NOTE: Due to size constraints a shortened dipole is used over part of this freq... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.2.4 Mutual coupling and mismatch loss correction factors | Correction factors are included where relevant, to allow for mutual coupling and mismatch loss for the 30 MHz to 180 MHz band, based on using the recommended ANSI C63.5 (1988) [11] dipoles. These have been calculated by computer modelling of their baluns, sectional arms and the testing arrangements (i.e. range length, ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.3 For Stripline test facilities only | The Stripline to be used is that detailed in CENELEC European Standard EN 55020 [12]. The size of a Stripline limits the usable frequency range. To avoid the possibility of generating unwanted field modes (which can disturb the required electric field distribution in the line), the spacing between the plates should not... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.3.1 Site preparation | The Stripline should be placed on non conducting supports at least 0,8 m above the floor and not closer than 0,8 m to the ceiling. When used inside a room (whether screened or not), continuous lines of vertical panels (at least 1 m high) covered in absorbing material should be placed between the open sides of the Strip... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.3.2 Preparation of the EUT | A block of non-conducting, low dielectric constant (less than 1,5) material should be available, on which the EUT and its bracket can be mounted within the Stripline, so that its volume centre is midway between the plates. The routing of the cables supplying power to the EUT when inside the Stripline should be straight... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.4 For Test Fixtures only | The Test Fixture should be supplied by the manufacturer of the EUT and should enable testing to be performed under extreme test conditions of temperature and/or voltage, as defined in the relevant standard. It should provide RF connection(s) and allow connection(s) to external power supply(s) and control equipment if n... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.4.1 Site preparation | For the particular type of EUT, the corresponding results of the verification of the Test Fixture (taken at an accredited Free-Field Test Site) should be available. These results should have been taken under normal conditions in full accordance with the procedures described in the relevant part of ETR 273 [6] and shoul... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.5 For Salty man/salty-lite testing only | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.5.1 Range length | Whichever type of free-field test is used for the tests involving the salty device i.e. Anechoic Chamber, Anechoic Chamber with a ground plane or Open Area Test Site, the range length should be adequate to satisfy the far-field requirements given in subclause 6.2.1. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 6.5.2 Site preparation | Whichever type of free-field test is used for the tests involving the salty device i.e. Anechoic Chamber, Anechoic Chamber with a ground plane or Open Area Test Site, the site preparation should be carried out in the manner relevant to that Free-Field Test Site (see subclause 6.2.2). |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7 Transmitter measurements | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1 Conducted tests | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.1 Frequency error | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.1.1 Definition | The frequency error of the transmitter is the difference between the unmodulated carrier frequency and the nominal frequency selected for the test. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.1.2 Method of measurement | Transmitter under test Frequency meter Test load Figure 17: Measurement arrangement a) The transmitter should be connected to the test load. The carrier frequency should be measured in the absence of modulation. b) The measurement should be repeated under extreme test conditions. ETSI ETSI TR 100 027 V1.2.1 (1999-12) 4... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.2 Carrier power | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.2.1 Definition | The carrier power is the average power delivered to the test load during one radio frequency cycle in the absence of modulation. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.2.2 Method of measurement | Transmitter under test Test load RF power meter Figure 18: Measurement arrangement a) The transmitter should be connected to the test load and the carrier or mean power delivered to this test load measured. b) The value measured should be compared with the rated RF output power. c) The measurement should be repeated un... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.3 Adjacent channel power | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.3.1 Definition | The adjacent channel power is that part of the total power output of a transmitter under defined conditions of modulation, which falls within a specified passband centred on the nominal frequency of either of the adjacent channels. This power is the sum of the mean power produced by the modulation, hum and noise of the... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.3.2 Method of measurement | Test load Power measuring receiver Modulating signal generator Transmitter under test Figure 19: Measurement arrangement a) The transmitter under test should be connected via the test load to a power measuring receiver calibrated to measure rms power level. The level at the receiver input should be within its allowed l... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.4 Conducted spurious emissions | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.4.1 Definition | Conducted spurious emissions are discrete signals whose power is conveyed by conduction to the test load at frequencies other than those of the carrier and sidebands resulting from the normal process of modulation. They are specified as the power level of any discrete signal delivered into a test load. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.4.2 Method of measurement | Filter Spectrum analyser or selective voltmeter Test load signal generator Transmitter under test Figure 20: Measurement arrangement a) The transmitter should be connected to a spectrum analyser or a selective voltmeter through a test load and an appropriate filter to avoid overloading of the spectrum analyzer or selec... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.5 Intermodulation attenuation | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.5.1 Definition | For the purpose of this test the intermodulation attenuation is a measure of the capability of a transmitter to inhibit the generation of signals in its non-linear elements caused by the presence of the carrier and an interfering signal entering the transmitter via its antenna. It is specified as the ratio, in decibels... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.5.2 Method of measurement | Transmitter under test 10 dB Attenuator 20 dB Attenuator Directional coupler Interfering test signal source Attenuator Termination Spectrum analyser Figure 21: Measurement arrangement a) Preliminary to the measurement the carrier power of the transmitter under test should be measured according to subclause 7.1.2, under... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.6 Attack time | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.6.1 Definition | The transmitter attack time is the time interval between the instant at which the final irrevocable logic decision to power up the transmitter is taken and the moment after which: a) the unmodulated transmitter power always remains within a level -1 dB and +1,5 dB of the steady state carrier power; or b) the frequency ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.6.2 Method of measurement | Transmitter under test Signal generator Test load Trigger device RF detector or spectrum analyser Test discriminator Storage oscilloscope Figure 22: Measurement arrangement a) The transmitter is connected to a RF detector and to a test discriminator via a matched test load. The attenuation of the test load should be ch... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.7 Release time | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.7.1 Definition | The transmitter release time is the time interval between the instant at which the final irrevocable logic decision to power down the transmitter is taken and the moment when the unmodulated transmitter power has decayed to a level 50 dB below the rated RF output power. NOTE: This may be used for checking the channel e... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.7.2 Method of measurement | Transmitter under test Signal generator Test load Trigger device RF detector or spectrum analyser Storage oscilloscope Figure 23: Measurement arrangement ETSI ETSI TR 100 027 V1.2.1 (1999-12) 45 a) The transmitter is connected to a RF detector via a matched test load. A storage oscilloscope (or a transient recorder) re... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.8 Transient adjacent channel power | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.8.1 Definition | The transient adjacent channel power of a transmitter is expressed as the ratio in decibels of the peak power in the adjacent channels, during the rise or decay time, to the unmodulated carrier power. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.8.2 Method of measurement | This method of measurement uses a power measuring receiver in the adjacent channels. It should be preceded by two preliminary verifications, in order to guarantee that the transients will not appear outside either of the channels adjacent to the carrier and therefore the measurement should be made in the first adjacent... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.8.2.3 Measurement | For application of this method it should be noted that, at the present date no power measurement receivers are available on the market giving sufficient accuracy in the case of short transmission times. Transmitter under test Test load Power measuring receiver Figure 24: Measurement arrangement a) The transmitter under... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.9 Frequency deviation | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.9.1 Definition | The frequency deviation is the maximum difference between the instantaneous frequency of the frequency or phase modulated radio frequency signal and the carrier frequency in the absence of modulation. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.9.2 Method of measurement | Transmitter under test Test load Deviation meter Modulating signal generator Figure 25: Measurement arrangement The transmitter should be connected to the test load. The frequency deviation should be measured by means of a deviation meter capable of measuring the maximum permissible frequency deviation, including that ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.9.2.1 Analogue signals within the audio bandwidth | a) The modulation frequency should be varied between 300 Hz and the upper specified audio frequency limit. The level of this test signal should be 20 dB above the level corresponding to a deviation at 1 000 Hz of 12 % of the channel separation. b) The maximum (positive or negative) frequency deviation should be recorde... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.9.2.2 Analogue signals above the audio bandwidth | a) The modulation frequency should be varied between the upper specified audio frequency limit and a frequency equal to the channel separation for which the equipment is intended. The level of this signal should correspond to a deviation at 1 000 Hz of 12 % of the channel separation. b) The maximum (positive or negativ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.9.2.3 Digital signals | For indirect modulation where the digital signal may either phase or frequency modulate an audio frequency sub-carrier which then modulates the radio frequency carrier the following method should be used. a) The transmitter should be modulated with the test modulation D-M0 at the normal deviation level. b) The maximum ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.10 Limiter characteristic for analogue speech | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.10.1 Definition | The limiter characteristic expresses the capability of the transmitter to be modulated with a frequency deviation approaching the maximum permissible frequency deviation. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.10.2 Method of measurement | Transmitter under test Test load Deviation meter Modulating signal generator Figure 26: Measurement arrangement a) The transmitter under test should be connected via the test load to the deviation meter. b) A modulating signal at a frequency of 1 000 Hz should be applied to the transmitter. The level should be adjusted... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.11 Acoustic sensitivity of modulator for analogue speech | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.11.1 Definition | The acoustic sensitivity of the modulator is the capability of the transmitter to be modulated satisfactorily when an audio frequency signal corresponding to the normal average speech level is applied to the microphone. ETSI ETSI TR 100 027 V1.2.1 (1999-12) 48 |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.11.2 Method of measurement | Transmitter under test Test load Deviation meter Modulating signal generator Microphone Loudspeaker Figure 27: Measurement arrangement The use of an anechoic acoustic chamber is recommended. Great care should be taken with the acoustic interface to ensure that background noise is minimized and that the correct loudness... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.12 Audio frequency response for analogue speech | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.12.1 Definition | The audio frequency response is the variation of the transmitter frequency deviation as a function of the modulating frequency. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.12.2 Method of measurement | Transmitter under test Test load Deviation meter Modulating signal generator Figure 28: Measurement arrangement a) The transmitter under test should be connected via the test load to the deviation meter. b) A modulating signal with a frequency of 1 000 Hz should be applied to the transmitter. The level should be adjust... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.13 Harmonic distortion for analogue speech | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.13.1 Definition | The harmonic distortion of a transmitter when modulated with an audio frequency signal is defined as the ratio, expressed as a percentage, of the rms voltage of all the harmonic components of the fundamental audio frequency to the total rms voltage of the signal after linear demodulation. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.13.2 Method of measurement | Transmitter under test Test load Deviation meter and demodulator Modulating signal generator (De-emphasis filter and) distortion meter Figure 29: Measurement arrangement a) The transmitter under test should be connected via the test load to the deviation meter which has a linear audio output. The output of the deviatio... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.14 Residual modulation for analogue speech | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.14.1 Definition | The residual modulation of a transmitter is the ratio, expressed in decibels, of the audio frequency output power produced after the demodulation of the radio frequency signal in the absence of wanted modulation to the audio frequency output power produced by the application of specified test modulation. ETSI ETSI TR 1... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.1.14.2 Method of measurement | Transmitter under test Test load Deviation meter and demodulator Modulating signal generator (De-emphasis filter and) psophometric filter and rms voltmeter Figure 30: Measurement arrangement Care should be taken to avoid false results caused by the emphasis of low frequency noise in the demodulator. a) The transmitter ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2 Radiated tests | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1 Frequency error (30 MHz to 1 000 MHz) | Definition The frequency error of a transmitter is the difference between the measured carrier frequency in the absence of modulation and the nominal frequency of the transmitter as stated by the manufacturer. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.1 Anechoic Chamber | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.1.1 Apparatus required | - Digital voltmeter; - Ferrite beads; - 10 dB attenuators; - Power supply; - Connecting cables; - Anechoic Chamber; - Test antenna (a half wavelength dipole, bicone or LPDA); - Frequency counter. The type and serial numbers of all items of test equipment should be recorded in the log book results sheet (table 18). ETSI... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.1.2 Method of measurement | 1) The measurement should always be performed in the absence of modulation. 2) The EUT should be mounted on the turntable, whose surface is at the height specified in the relevant standard or, where not stated, at a convenient height within the "quiet zone" of the Anechoic Chamber. The EUT should be mounted in an orien... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.1.3 Procedure for completion of the results sheets | There are two values that need to be derived before the overall results sheet (table 6) can be completed. Firstly the value for frequency error (from a straightforward calculation of recorded frequency minus the nominal frequency) and secondly, the value of the expanded uncertainty for the test. This should be carried ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.1.4 Log book entries | Table 5: Log book results sheet FREQUENCY ERROR Date: PAGE 1 of 1 Temperature:........................... °°°°C Humidity:.........................% Frequency:.................MHz Manufacturer of EUT: ............. Type No: .......................... Serial No: ................... Range length:............................. |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.1.5 Statement of results | The results should be presented in tabular form as shown in table 6. Table 6: Overall results sheet FREQUENCY ERROR Date: PAGE 1 of 1 Frequency error Hz Expanded uncertainty (95 %) Hz ETSI ETSI TR 100 027 V1.2.1 (1999-12) 53 |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.2 Anechoic Chamber with a ground plane | For Frequency Error testing in an Anechoic Chamber with a ground plane reference should be made to the Open Area Test Site test method (subclause 7.2.1.3), since the procedures are identical. The test equipment and EUT set-up for this test is shown in figure 32. Range length 3 m or 10 m Turntable Test antenna 1 - 4 m E... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.3 Open Area Test Site | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.3.1 Apparatus required | - Digital voltmeter; - Ferrite beads; - 10 dB attenuators; - Power supply; - Connecting cables; - Open Area Test Site; - Test antenna (a half wavelength dipole, bicone or a LPDA); - Frequency counter. The type and serial numbers of all items of test equipment should be recorded in the log book results sheet (table 7). ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.3.2 Method of measurement | 1 The measurement should always be performed in the absence of modulation. 2 The EUT should be mounted on a turntable whose mounting surface is at the height (above the ground plane) specified in the relevant standard. The EUT should be mounted in an orientation which matches that of its normal usage as stated by the m... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.3.3 Procedure for completion of the results sheets | There are only two values that need to be derived before the overall results sheet (table 8) can be completed. Firstly the value for frequency error (from a straightforward calculation of recorded frequency minus the nominal frequency) and secondly, the value of the expanded uncertainty for the test. This should be cal... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.3.4 Log book entries | Table 7: Log book results sheet FREQUENCY ERROR Date: PAGE 1 of 1 Temperature:...........................°°°°C Humidity: .............. % Frequency:.................MHz Manufacturer of EUT: ............. Type No: ............... Serial No: ................... Range length:....................... Test equipment item Typ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.3.5 Statement of results | The results should be presented in tabular form as shown in table 8. Table 8: Overall results sheet FREQUENCY ERROR Date: PAGE 1 of 1 Frequency error Hz Expanded uncertainty (95 %) Hz |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.4 Stripline | The frequency error test is not normally carried out in a stripline test facility. ETSI ETSI TR 100 027 V1.2.1 (1999-12) 56 |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.5 Test Fixture | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.5.1 Apparatus required | - Digital voltmeter; - Ferrite beads; - 10 dB attenuator; - Power supply; - Connecting cables; - Test Fixture; - Climatic facility; - Accredited Free-Field Test Site; - Frequency counter. The type and serial numbers of all items of test equipment should be recorded in the log book results sheet (table 9). |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.5.2 Method of measurement | 1 The measurement should always be performed in the absence of modulation. 2 The Test Fixture should have been verified for use, with the particular EUT, on an accredited Free-Field Test Site in accordance with clause 6. Four different measurements of the magnitude of the frequency error should have been taken during t... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.5.3 Procedure for completion of the results sheets | There are two values that need to be derived before the overall results sheet (table 3) can be completed. Firstly the value for frequency error (from a straightforward calculation of recorded frequency minus the nominal frequency) and secondly, the value of the expanded uncertainty for the test which should be calculat... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.5.4 Log book entries | Table 9: Log book results sheet FREQUENCY ERROR Date: PAGE 1 of 1 Frequency: ................................MHz Free-field test site type: .......................... Manufacturer of EUT:............... Type number:........................................... Serial No: ........................ Test equipment item Type ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.1.5.5 Statement of results | The results are presented in tabular form as shown in table 10. Table 10: Overall results sheet FREQUENCY ERROR Date: PAGE 1 of 1 T (normal) T (high) T (low) V (normal) V (high) V (low) V (high) V (low) Frequency error Hz Hz Hz Hz Hz Expanded uncertainty (95 %) Hz |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2 Effective radiated power (30 MHz to 1 000 MHz) | Definition The effective radiated power is the power radiated in the direction of the maximum field strength under specified conditions of measurement, in the absence of modulation. ETSI ETSI TR 100 027 V1.2.1 (1999-12) 59 |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.1 Anechoic Chamber | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.1.1 Apparatus required | - Digital voltmeter; - Ferrite beads; - 10 dB attenuators; - Power supply; - Connecting cables; - Anechoic Chamber; - Test antenna (half wavelength dipole as detailed in ANSI C63.5 (1988) [11] recommended); - Substitution antenna (half wavelength dipole as detailed in ANSI C63.5 (1988) [11] recommended); - Receiving de... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.1.2 Method of measurement | 1 The measurement should always be performed in the absence of modulation. 2 The EUT should be mounted directly onto the turntable, whose surface is at the height specified in the relevant standard or, where not stated, at a convenient height within the "quiet zone" of the Anechoic Chamber. The EUT should be mounted in... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.1.3 Procedure for completion of the results sheets | There are two values that need to be derived before the overall results sheet (table 13) can be completed. These are the overall measurement correction and the expanded uncertainty values. Guidance for deriving the values of the correction factors is given in table 11. ETSI ETSI TR 100 027 V1.2.1 (1999-12) 62 When the ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.1.4 Log book entries | Table 12: Log book results sheet EFFECTIVE RADIATED POWER Date: PAGE 1 of 2 Temperature:................................... °°°°C Humidity: ...........% Frequency: ................... MHz Manufacturer of EUT: ........................ Type No: ............ Serial No:...................... Bandwidth of Receiving Device: ... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.1.5 Statement of results | The results should be presented in tabular form as shown in table 13. Table 13: Overall results sheet EFFECTIVE RADIATED POWER Date: PAGE 1 of 1 Vertical Polarization Horizontal Polarization Effective radiated power dBm Effective radiated power dBm Expanded uncertainty (95 %) dB Expanded uncertainty (95 %) dB |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.2 Anechoic Chamber with a ground plane | For Effective radiated power testing in an Anechoic Chamber with a ground plane, reference should be made to the Open Area Test Site test method (subclause 7.2.2.3), since the procedures are identical. The test equipment set-up for the EUT measurement is shown in figure 37 whilst the set-up for the substitution part of... |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.3 Open Area Test Site | |
f968701d34274f489f6c9983c6c42197 | 100 027 | 7.2.2.3.1 Apparatus required | - Digital voltmeter; - Ferrite beads; - 10 dB attenuators; - Power supply; - Connecting cables; - Open Area Test Site; - Test Antenna (half wavelength dipole as detailed in ANSI C63.5 (1988) [11] recommended); - Substitution antenna (half wavelength dipole as detailed in ANSI C63.5 (1988) [11] recommended); - Receiving... |
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