DENR1 In ear transceiver RF Exposure Info Accredited testing-laboratory Overline Systems SARL

Overline Systems SARL In ear transceiver

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Annex D
Appendix to Test Report No.: 1-5025/17-02-11-A
Testing Laboratory
CTC advanced GmbH
Untertürkheimer Straße 6 – 10
66117 Saarbrücken/Germany
Phone:
+ 49 681 5 98 - 0
Fax:
+ 49 681 5 98 - 9075
Internet: http://www.ctcadvanced.com
e-mail:
mail@ctcadvanced.com
Accredited Test Laboratory:
The testing laboratory (area of testing) is accredited
according to DIN EN ISO/IEC 17025 (2005) by the
Deutsche Akkreditierungsstelle GmbH (DAkkS)
The accreditation is valid for the scope of testing
procedures as stated in the accreditation certificate with
the registration number: D-PL-12076-01-01
Appendix with Calibration data, Phantom certificate and system check
information
2012-01-16
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Table of contents
Table of contents ............................................................................................................................ 2
Calibration report “Probe ES3DV3” ................................................................................................ 3
Calibration report “Probe EX3DV4” .............................................................................................. 14
Calibration report “2450 MHz System validation dipole” .............................................................. 25
Calibration report “5GHz System check dipole” ........................................................................... 35
Calibration certificate of Data Acquisition Unit (DAE) .................................................................. 54
Calibration certificate of Data Acquisition Unit (DAE) .................................................................. 55
Certificate of “SAM Twin Phantom V4.0/V4.0C’’........................................................................... 56
Application Note System Performance Check .............................................................................. 57
9.1
9.2
9.3
9.4
9.5
9.6
Purpose of system performance check .............................................................................. 57
System Performance check procedure............................................................................... 57
Uncertainty Budget............................................................................................................. 58
Power set-up for validation................................................................................................. 62
Laboratory reflection .......................................................................................................... 63
Additional system checks .................................................................................................. 63
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Calibration report “Probe ES3DV3”
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Calibration report “Probe EX3DV4”
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Calibration report “2450 MHz System validation dipole”
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Antenna Parameters with Head TSL
Impedance; transformed to feed
point
Return Loss
From cal. data
Measured 2017-08-23
51.9Ω + 2.6jΩ
52.6Ω +1.9jΩ
-30.0dB
-31.2dB
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Antenna Parameters with Body TSL
Impedance; transformed to feed
point
Return Loss
From cal. data
Measured 2017-08-23
48.2Ω +3.1jΩ
48.1Ω -2.3jΩ
-28.8dB
-30.4dB
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Calibration report “5GHz System check dipole”
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Antenna Parameters with Head TSL at 5200 MHz
From cal. data
Measured
Impedance; transformed to feed point 51.3 Ω - 8.6 jΩ 48.8 Ω - 7.6 jΩ
Return Loss
- 21.3 dB
- 22.16 dB
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Antenna Parameters with Head TSL at 5500 MHz
From cal. data
Measured
Impedance; transformed to feed point 51.8 Ω - 5.7 jΩ 52.3 Ω - 4.9 jΩ
Return Loss
- 24.7 dB
- 25.5 dB
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Antenna Parameters with Head TSL at 5800 MHz
From cal. data
Measured
Impedance; transformed to feed point 55.3 Ω - 1.7 jΩ 53.4 Ω - 3.9 jΩ
Return Loss
- 25.6 dB
- 25.9 dB
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Antenna Parameters with Body TSL at 5200 MHz
From cal. data
Measured
Impedance; transformed to feed point 51.9 Ω - 7.5 jΩ 49.2 Ω - 8.1 jΩ
Return Loss
- 22.4 dB
- 21.7 dB
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Antenna Parameters with Body TSL at 5500 MHz
From cal. data
Measured
Impedance; transformed to feed point 52.8 Ω - 3.0 jΩ 50.7 Ω - 3.8 jΩ
Return Loss
- 28.0 dB
- 28.4 dB
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Antenna Parameters with Body TSL at 5800 MHz
From cal. data
Measured
Impedance; transformed to feed point 56.6 Ω - 0.3 jΩ 54.7 Ω - 1.7 jΩ
Return Loss
- 24.1 dB
- 26.4 dB
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Calibration certificate of Data Acquisition Unit (DAE)
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Calibration certificate of Data Acquisition Unit (DAE)
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Certificate of “SAM Twin Phantom V4.0/V4.0C’’
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Application Note System Performance Check
9.1 Purpose of system performance check
The system performance check verifies that the system operates within its specifications. System and
operator errors can be detected and corrected. It is recommended that the system performance check is
performed prior to any usage of the system in order to guarantee reproducible results.
The measurement of the Specific Absorption Rate (SAR) is a complicated task and the result depends on
the proper functioning of many components and the correct settings of many parameters. Faulty results due
to drift, failures or incorrect parameters might not be recognized, since they often look similar in distribution
to the correct ones. The Dosimetric Assessment System DASY5 incorporates a system performance check
procedure to test the proper functioning of the system. The system performance check uses normal SAR
measurements in a simplified setup (the flat section of the SAM Twin Phantom) with a well characterized
source (a matched dipole at a specified distance). This setup was selected to give a high sensitivity to all
parameters that might fail or vary over time (e.g., probe, liquid parameters, and software settings) and a low
sensitivity to external effects inherent in the system (e.g., positioning uncertainty of the device holder). The
system performance check does not replace the calibration of the components. The accuracy of the system
performance check is not sufficient for calibration purposes. It is possible to calculate the field quite
accurately in this simple setup; however, due to the open field situation some factors (e.g., laboratory
reflections) cannot be accounted for. Calibrations in the flat phantom are possible with transfer calibration
methods, using either temperature probes or calibrated E-field probes. The system performance check also
does not test the system performance for arbitrary field situations encountered during real measurements of
mobile phones. These checks are performed at SPEAG by testing the components under various conditions
(e.g., spherical isotropy measurements in liquid, linearity measurements, temperature variations, etc.), the
results of which are used for an error estimation of the system. The system performance check will indicate
situations where the system uncertainty is exceeded due to drift or failure.
9.2 System Performance check procedure
Preparation
The conductivity should be measured before the validation and the measured liquid parameters must be
entered in the software. If the measured values differ from targeted values in the dipole document, the liquid
composition should be adjusted. If the validation is performed with slightly different (measured) liquid
parameters, the expected SAR will also be different. See the application note about SAR sensitivities for an
estimate of possible SAR deviations. Note that the liquid parameters are temperature dependent with
approximately – 0.5% decrease in permittivity and + 1% increase in conductivity for a temperature decrease
of 1° C. The dipole must be placed beneath the flat phantom section of the Generic Twin Phantom with the
correct distance holder in place. The distance holder should touch the phantom surface with a light pressure
at the reference marking (little hole) and be oriented parallel to the long side of the phantom. Accurate
positioning is not necessary, since the system will search for the peak SAR location, except that the dipole
arms should be parallel to the surface. The device holder for mobile phones can be left in place but should
be rotated away from the dipole. The forward power into the dipole at the dipole SMA connector should be
determined as accurately as possible. The actual dipole input power level can be between 20mW and
several watts. The result can later be normalized to any power level. It is strongly recommended to note the
actually used power level in the „comment“-window of the measurement file; otherwise you loose this crucial
information for later reference.
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System Performance Check
The DASY5 installation includes predefined files with recommended procedures for measurements and
validation. They are read-only document files and destined as fully defined but unmeasured masks, so you
must save the finished validation under a different name. The validation document requires the Generic Twin
Phantom, so this phantom must be properly installed in your system. (You can create your own
measurement procedures by opening a new document or editing an existing document file). Before you start
the validation, you just have to tell the system with which components (probe, medium, and device) you are
performing the validation; the system will take care of all parameters. After the validation, which will take
about 20 minutes, the results of each task are displayed in the document window. Selecting all measured
tasks and opening the predefined “validation” graphic format displays all necessary information for validation.
A description of the different measurement tasks in the predefined document is given below, together with
the information that can be deduced from their results:
•
The „reference“ and „drift“ measurements are located at the beginning and end of the batch process.
They measure the field drift at one single point in the liquid over the complete procedure. The indicated
drift is mainly the variation of the amplifier output power. If it is too high (above ± 0.1dB) the validation
should be repeated; some amplifiers have very high drift during warm-up. A stable amplifier gives drift
results in the DASY5 system below ± 0.02 dB.
•
The „area scan“ measures the SAR above the dipole on a parallel plane to the surface. It is used to
locate the approximate location of the peak SAR with 2D spline interpolation. The proposed scan uses
large grid spacing for faster measurement; due to the symmetric field the peak detection is reliable. If a
finer graphic is desired, the grid spacing can be reduced. Grid spacing and orientation have no influence
on the SAR result.
•
The zoom scan job measures the field in a volume around the peak SAR value assessed in the previous
„area“ scan (for more information see the application note on SAR evaluation).
If the validation measurements give reasonable results, the peak 1g and 10g spatial SAR values averaged
between the two cubes and normalized to 1W dipole input power give the reference data for comparisons.
The next section analyzes the expected uncertainties of these values. Section 6 describes some additional
checks for further information or troubleshooting.
9.3 Uncertainty Budget
Please note that in the following Tables, the tolerance of the following uncertainty components depends on
the actual equipment and setup at the user location and need to be either assessed or verified on-site by the
end user of the DASY5 system:
• RF ambient conditions
• Dipole Axis to Liquid Distance
• Input power and SAR drift measurement
• Liquid permittivity - measurement uncertainty
• Liquid conductivity - measurement uncertainty
Note: All errors are given in percent of SAR, so 0.1 dB corresponds to 2.3%. The field error would be half of
that. The liquid parameter assessment give the targeted values from the dipole document. All errors are
given in percent of SAR, so 0.1dB corresponds to 2.3%. The field error would be half of that.
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System validation
In the table below, the system validation uncertainty with respect to the analytically assessed SAR
value of a dipole source as given in the IEEE1528 standard is given. This uncertainty is smaller
than the expected uncertainty for mobile phone measurements due to the simplified setup and the
symmetric field distribution.
Uncertainty Budget for System Validation
for the 0.3 - 6 GHz range
Source of
uncertainty
Measurement System
Probe calibration
Axial isotropy
Hemispherical isotropy
Boundary effects
Probe linearity
System detection limits
Readout electronics
Response time
Integration time
RF ambient conditions
Probe positioner
Probe positioning
Max. SAR evaluation
Dipole Related
Dev. of exp. dipole
Dipole Axis to Liquid Dist.
Input power & SAR drift
Phantom and Set-up
Phantom uncertainty
SAR correction
Liquid conductivity (meas.)
Liquid permittivity (meas.)
Temp. unc. - Conductivity
Temp. unc. - Permittivity
Combined Uncertainty
Expanded Std.
Uncertainty
ci Standard Uncertainty vi2 or
Uncertainty Probability Divisor ci
Value
Distribution
(1g) (10g) ± %, (1g) ± %, (10g) veff
±
±
±
±
±
±
±
±
±
±
±
±
±
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
± 5.5 % Rectangular
± 2.0 % Rectangular
± 3.4 % Rectangular
√ 3
√ 3
√ 3
± 3.2 % ± 3.2 %
± 1.2 % ± 1.2 %
± 2.0 % ± 2.0 %
∞
∞
∞
±
±
±
±
±
±
√ 3
√ 3
√ 3
√ 3
0.78
0.26
0.78
0.23
0.84
0.71
0.26
0.71
0.26
±
±
±
±
±
±
±
±
±
±
±
±
±
6.6
4.7
9.6
1.0
4.7
1.0
0.3
0.0
0.0
1.0
0.8
6.7
2.0
4.0
1.9
5.0
5.0
1.7
0.3
Normal
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Normal
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Normal
Normal
Rectangular
Rectangular
√
√
√
√
√
√
√
√
√
√
√
±
±
±
±
±
±
±
6.6
2.7
0.0
0.6
2.7
0.6
0.3
0.0
0.0
0.6
0.5
3.9
1.2
2.3
1.1
3.9
1.3
0.8
0.0
10.7
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
6.6
2.7
0.0
0.6
2.7
0.6
0.3
0.0
0.0
0.6
0.5
3.9
1.2
2.3
0.9
3.6
1.3
0.7
0.0
10.6
± 21.4 % ± 21.1 %
Table 1: Measurement uncertainties of the System Validation with DASY5 (0.3-6GHz). The RF ambient
noise uncertainty has been reduced to ±1.0, considering input power levels are ≥ 250mW.
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∞
∞
∞
∞
∞
∞
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Performance check repeatability
The repeatability check of the validation is insensitive to external effects and gives an indication of the
variations in the DASY5 measurement system, provided that the same power reading setup is used for all
validations. The repeatability estimates for frequencies below ad above 3GHz are given in the following
tables:
Repeatability Budget for System Check
for the 0.3 - 3 GHz range
Source of
uncertainty
Measurement System
Repeatability of probe cal.
Axial isotropy
Hemispherical isotropy
Boundary effects
Probe linearity
System detection limits
Modulation response
Readout electronics
Response time
Integration time
RF ambient noise
RF ambient positioning
Probe positioner
Probe positioning
Max. SAR evaluation
Dipole Related
Dev. of experimental dipole
Dipole axis to liquid dist.
Input power & SAR drift
Phantom and Set-up
Phantom uncertainty
SAR correction
Liquid conductivity (meas.)
Liquid permittivity (meas.)
Temp. unc. - Conductivity
Temp. unc. - Permittivity
Combined Uncertainty
Expanded Std.
Uncertainty
c i Standard Uncertainty vi2 or
Uncertainty Probability Divisor c i
Value
Distribution
(1g) (10g) ± %, (1g) ± %, (10g) vef f
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
1.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.4
2.9
0.0
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
± 0.0 % ±
± 1.2 % ±
± 2.0 % ±
0.0 %
1.2 %
2.0 %
∞
∞
∞
±
±
±
±
±
±
±
2.3
0.9
3.6
1.3
0.7
0.0
5.7
∞
∞
∞
∞
∞
∞
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
± 0.0 % Rectangular
± 2.0 % Rectangular
± 3.4 % Rectangular
√ 3
√ 3
√ 3
±
±
±
±
±
±
√ 3
√ 3
√ 3
√ 3
0.78
0.26
0.78
0.23
0.84
0.71
0.26
0.71
0.26
Normal
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Normal
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
4.0
1.9
5.0
5.0
1.7
0.3
Rectangular
Rectangular
Normal
Normal
Rectangular
Rectangular
√
√
√
√
√
√
√
√
√
√
√
√
√
1.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
1.7
0.0
2.3
1.1
3.9
1.3
0.8
0.0
5.9
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
1.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
1.7
0.0
± 11.9 % ± 11.4 %
Table 2: Repeatability of the System Check with DASY5 (0.3-3GHz)
Page 60 of 63
Test report no.: 1-5025/17-02-11-A
Repeatability Budget for System Check
for the 3 - 6 GHz range
Source of
uncertainty
Measurement System
Repeatability of probe cal.
Axial isotropy
Hemispherical isotropy
Boundary effects
Probe linearity
System detection limits
Modulation response
Readout electronics
Response time
Integration time
RF ambient noise
RF ambient positioning
Probe positioner
Probe positioning
Max. SAR evaluation
Dipole Related
Dev. of experimental dipole
Dipole axis to liquid dist.
Input power & SAR drift
Phantom and Set-up
Phantom uncertainty
SAR correction
Liquid conductivity (meas.)
Liquid permittivity (meas.)
Temp. unc. - Conductivity
Temp. unc. - Permittivity
Combined Uncertainty
Expanded Std.
Uncertainty
ci Standard Uncertainty vi2 or
Uncertainty Probability Divisor ci
Value
Distribution
(1g) (10g) ± %, (1g) ± %, (10g) veff
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
± 0.0 % Rectangular
± 2.0 % Rectangular
± 3.4 % Rectangular
√ 3
√ 3
√ 3
± 0.0 % ± 0.0 %
± 1.2 % ± 1.2 %
± 2.0 % ± 2.0 %
∞
∞
∞
±
±
±
±
±
±
√ 3
√ 3
√ 3
√ 3
0.78
0.26
0.78
0.23
0.84
0.71
0.26
0.71
0.26
±
±
±
±
±
±
±
∞
∞
∞
∞
∞
∞
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
1.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.8
6.7
0.0
4.0
1.9
5.0
5.0
1.7
0.3
Normal
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Normal
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Rectangular
Normal
Normal
Rectangular
Rectangular
√
√
√
√
√
√
√
√
√
√
√
√
√
1.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.5
3.9
0.0
2.3
1.1
3.9
1.3
0.8
0.0
6.9
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
1.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.5
3.9
0.0
2.3
0.9
3.6
1.3
0.7
0.0
6.7
± 13.8 % ± 13.4 %
Table 3: Repeatability of the System Check with DASY5 (3-6GHz)
Note: Worst case probe calibration uncertainty has been applied for all probes used during the
measurements.
The expected repeatability deviation is low. Excessive drift (e.g., drift in liquid parameters), partial system
failures or incorrect parameter settings (e.g., wrong probe or device settings) will lead to unexpectedly high
repeatability deviations. The repeatability gives an indication that the system operates within its initial
specifications. Excessive drift, system failure and operator errors are easily detected.
Page 61 of 63
Test report no.: 1-5025/17-02-11-A
9.4 Power set-up for validation
The uncertainty of the dipole input power is a significant contribution to the absolute uncertainty and the
expected deviation in interlaboratory comparisons. The values in Section 2 for a typical and a sophisticated
setup are just average values. Refer to the manual of the power meter and the detector head for the
evaluation of the uncertainty in your system. The uncertainty also depends on the source matching and the
general setup. Below follows the description of a recommended setup and procedures to increase the
accuracy of the power reading:
The figure shows the recommended setup. The PM1 (incl. Att1) measures the forward power at the location
of the validation dipole connector. The signal generator is adjusted for the desired forward power at the
dipole connector and the power meter PM2 is read at that level. After connecting the cable to the dipole, the
signal generator is readjusted for the same reading at power meter PM2. If the signal generator does not
allow a setting in 0.01dB steps, the remaining difference at PM2 must be noted and considered in the
normalization of the validation results. The requirements for the components are:
•
The signal generator and amplifier should be stable (after warm-up). The forward power to the dipole
should be above 10mW to avoid the influence of measurement noise. If the signal generator can deliver
15dBm or more, an amplifier is not necessary. Some high power amplifiers should not be operated at a
level far below their maximum output power level (e.g. a 100W power amplifier operated at 250mW
output can be quite noisy). An attenuator between the signal generator and amplifier is recommended to
protect the amplifier input.
•
The low pass filter after the amplifier reduces the effect of harmonics and noise from the amplifier. For
most amplifiers in normal operation the filter is not necessary.
•
The attenuator after the amplifier improves the source matching and the accuracy of the power head.
(See power meter manual.) It can also be used also to make the amplifier operate at its optimal output
level for noise and stability. In a setup without directional coupler, this attenuator should be at least
10dB.
•
The directional coupler (recommended ³ 20dB) is used to monitor the forward power and adjust the
signal generator output for constant forward power. A medium quality coupler is sufficient because the
loads (dipole and power head) are well matched. (If the setup is used for reflective loads, a high quality
coupler with respect to directivity and output matching is necessary to avoid additional errors.)
•
The power meter PM2 should have a low drift and a resolution of 0.01dBm, but otherwise its accuracy
has no impact on the power setting. Calibration is not required.
•
The cable between the coupler and dipole must be of high quality, without large attenuation and phase
changes when it is moved. Otherwise, the power meter head PM1 should be brought to the location of
the dipole for measuring.
•
The power meter PM1 and attenuator Att1 must be high quality components. They should be calibrated,
preferably together. The attenuator (³10dB) improves the accuracy of the power reading. (Some higher
power heads come with a built-in calibrated attenuator.) The exact attenuation of the attenuator at the
frequency used must be known; many attenuators are up to 0.2dB off from the specified value.
•
Use the same power level for the power setup with power meter PM1 as for the actual measurement to
avoid linearity and range switching errors in the power meter PM2. If the validation is performed at
various power levels, do the power setting procedure at each level.
Page 62 of 63
Test report no.: 1-5025/17-02-11-A
•
The dipole must be connected directly to the cable at location “X”. If the power meter has a different
connector system, use high quality couplers. Preferably, use the couplers at the attenuator Att1 and
calibrate the attenuator with the coupler.
•
Always remember: We are measuring power, so 1% is equivalent to 0.04dB.
9.5 Laboratory reflection
In near-field situations, the absorption is predominantly caused by induction effects from the magnetic near field. The absorption from reflected fields in the laboratory is negligible. On the other hand, the magnetic field
around the dipole depends on the currents and therefore on the feed point impedance. The feed point
impedance of the dipole is mainly determined from the proximity of the absorbing phantom, but reflections in
the laboratory can change the impedance slightly. A 1% increase in the real part of the feed point impedance
will produce approximately a 1% decrease in the SAR for the same forward power. The possible influence of
laboratory reflections should be investigated during installation. The validation setup is suitable for this
check, since the validation is sensitive to laboratory reflections. The same tests can be performed with a
mobile phone, but most phones are less sensitive to reflections due to the shorter distance to the phantom.
The fastest way to check for reflection effects is to position the probe in the phantom above the feed point
and start a continuous field measurement in the DASY5 multi-meter window. Placing absorbers in front of
possible reflectors (e.g. on the ground near the dipole or in front of a metallic robot socket) will reveal their
influence immediately. A 10dB absorber (e.g. ferrite tiles or flat absorber mats) is probably sufficient, as the
influence of the reflections is small anyway. If you place the absorber too near the dipole, the absorber itself
will interact with the reactive near-field. Instead of measuring the SAR, it is also possible to monitor the
dipole impedance with a network analyzer for reflection effects. The network analyzer must be calibrated at
the SMA connector and the electrical delay (two times the forward delay in the dipole document) must be set
in the NWA for comparisons with the reflection data in the dipole document. If the absorber has a significant
influence on the results, the absorber should be left in place for validation or measurements. The reference
data in the dipole document are produced in a low reflection environment.
9.6 Additional system checks
While the validation gives a good check of the DASY5 system components, it does not include all
parameters necessary for real phone measurements (e.g. device modulation or device positioning). For
system validation (repeatability) or comparisons between laboratories a reference device can be useful. This
can be any mobile phone with a stable output power (preferably a device whose output power can be set
through the keyboard). For comparisons, the same device should be sent around, since the SAR variations
between samples can be large. Several measurement possibilities in the DASY5 software allow additional
tests of the performance of the DASY5 system and components. These tests can be useful to localize
component failures:
•
The validation can be performed at different power levels to check the noise level or the correct
compensation of the diode compression in the probe.
•
If a pulsed signal with high peak power levels is fed to the dipole, the performance of the diode
compression compensation can be tested. The correct crest factor parameter in the DASY5 software
must be set (see manual). The system should give the same SAR output for the same averaged input
power.
•
The probe isotropy can be checked with a 1D-probe rotation scan above the feed point. The automatic
probe alignment procedure must be passed through for accurate probe rotation movements (optional
DASY5 feature with a robot-mounted light beam unit). Otherwise the probe tip might move on a small
circle during rotation, producing some additional isotropy errors in gradient fields.
Page 63 of 63
Download: DENR1 In ear transceiver RF Exposure Info Accredited testing-laboratory Overline Systems SARL
Mirror Download [FCC.gov]DENR1 In ear transceiver RF Exposure Info Accredited testing-laboratory Overline Systems SARL
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Date Submitted2018-01-10 00:00:00
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Document Author: Thomas Vogler

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