RF exposure evaluation

FCC ID:

RF Exposure Info

Download: PDF

                                                                                                                                                                  CSA Confidential




                                     EMI − T E S T R E P O R T
                                                     - Human Exposure -


                  Type / Model Name                 : Medical Thermometer/degree°/DS02, DC02


                 Product Description                : clinical thermometer


                                Applicant           : Cosinuss GmbH

                                  Address           : Kistlerhofstr. 60

                                                      81379 München, GERMANY


                          Manufacturer              : Cosinuss GmbH

                                  Address           : Kistlerhofstr. 60

                                                      81379 München, GERMANY




       Test Result according to the standards
       listed in clause 1 test standards:
                                                                                  POSITIVE



                                                                                                             30. July 2019
        Test Report No. :                          T44704-00-02WP               ______________________________________________________________________________________________

                                                                                                                 Date of issue




                                                           The test report merely corresponds to the test sample.
                                                           It is not permitted to copy extracts of these test results
                                                           without the written permission of the test laboratory.




CSA Group Bayern GmbH                                                            File No. T44704-00-02WP, page 1 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                                                                Rev. No. 5.1, 2018-11-19


                                                                                                        CSA Confidential



                            FCC ID: 2ATBZDS02DC02                   IC: 25048-DS02DC02

                                                   Contents
       1     TEST ST AND ARDS                                                                               3

       2     EQUIPMENT UNDER TEST                                                                           4
       2.1     Photo documentation of the EUT – See ATTACHMENTS A, B                                        4
       2.2     Equipment type, category                                                                     4
       2.3     Short description of the equipment under test (EUT)                                          4
       2.4     Variants of the EUT                                                                          4
       2.5     Operation frequency and channel plan                                                         4
       2.6     Transmit operating modes                                                                     5
       2.7     Antennas                                                                                     5
       2.8     Power supply system utilised                                                                 5

       3     TEST RESULT SUMM ARY                                                                           6
       3.1     Final assessment                                                                             6

       4     TEST ENVIRONMENT                                                                               7
       4.1     Address of the test laboratory                                                               7
       4.2     Environmental conditions                                                                     7
       4.3     Statement of the measurement uncertainty                                                     7

       5     HUM AN EXPOSURE                                                                                8
       5.1     SAR test exclusion consideration                                                             8
       5.2     Exemption limits for routine evaluation - SAR evaluation                                     9

       ATTACHMENTS A,B as separate supplements




CSA Group Bayern GmbH                                                     File No. T44704-00-02WP, page 2 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                               Rev. No. 5.1, 2018-11-19


                                                                                                           CSA Confidential



                            FCC ID: 2ATBZDS02DC02                       IC: 25048-DS02DC02

1 TEST STANDARDS
The tests were performed according to following standards:

FCC Rules and Regulations Part 1, Subpart I - Procedures Implementing the National Environmental Policy
                                            Act of 1969
Part 1, Subpart I, Section 1.1310           Radiofrequency radiation exposure limits

Part 1, Subpart 2, Section 2.1093                  Radiofrequency radiation exposure evaluation: portable devices.


KDB 447498 D01 v06                                 Mobile and portable devices RF Exposure procedures and
                                                   equipment authorisation policies, October 23, 2015.

KDB 865664 D01 v01r04                              SAR Measurement Requirements for 100 MHz to 6 GHz,
                                                   August 7, 2015.

ANSI C95.1: 2005                                   IEEE Standard for Safety Levels with respect to Human Exposure to
                                                   Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz

ETSI TR 100 028 V1.3.1: 2001-03,                   Electromagnetic Compatibility and Radio Spectrum Matters (ERM);
                                                   Uncertainties in the Measurement of Mobile Radio Equipment
                                                   Characteristics—Part 1 and Part 2




CSA Group Bayern GmbH                                                      File No. T44704-00-02WP, page 3 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                  Rev. No. 5.1, 2018-11-19


                                                                                                               CSA Confidential



                            FCC ID: 2ATBZDS02DC02                             IC: 25048-DS02DC02

2 EQUIPMENT UNDER TEST
 2.1     Photo documentation of the EUT – See ATTACHMENTS A, B


 2.2     Equipment type, category

                                                   BLE device, portable equipment.


 2.3     Short description of the equipment under test (EUT)

The EUT is a Bluetooth Low Energy wireless clinical thermometer. A single chip antenna is used within the system.
The EUT has only one integrated antenna, no temporary connector and no external antenna can be connected. The
modulation used by the EUT is GFSK with a data rate of 1 Mbit/s.

Number of tested samples:             1
Serial number:                        DS02
Firmware version:                     1.0


 2.4     Variants of the EUT

There are no variants


 2.5     Operation frequency and channel plan
The operating frequency is 2400 MHz to 2483.5 MHz.

Channel plan BT-Standard 802.15.1:

                                      Channel     Frequency      Channel     Frequency
                                          37         2402           18          2442
                                           0         2404           19          2444
                                           1         2406           20          2446
                                           2         2408           21          2448
                                           3         2410           22          2450
                                           4         2412           23          2452
                                           5         2414           24          2454
                                           6         2416           25          2456
                                           7         2418           26          2458
                                           8         2420           27          2460
                                           9         2422           28          2462
                                          10         2424           29          2464
                                          38         2426           30          2466
                                          11         2428           31          2468
                                          12         2430           32          2470
                                          13         2432           33          2472
                                          14         2434           34          2474
                                          15         2436           35          2476
                                          16         2438           36          2478
                                          17         2440           39          2480
                                    Note: the marked frequencies are determined for final testing.



CSA Group Bayern GmbH                                                            File No. T44704-00-02WP, page 4 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                      Rev. No. 5.1, 2018-11-19


                                                                                                          CSA Confidential



                            FCC ID: 2ATBZDS02DC02                      IC: 25048-DS02DC02

 2.6     Transmit operating modes

The EUT uses GFSK modulation and may provide following data rates:

                            - 1000 kbps                                           (kbps = kilobits per second)


 2.7     Antennas

The following antennas shall be used with the EUT:
The EUT has only an integrated PCB antenna, no external antenna shall be connected. The following chip antenna
is soldered on the PCB:

                                                                      Frequency range          Peak
                        Type                           Model number
                                                                            (GHz)            gain (dBi)
                  Chip Antenna                 ANT016008LCS2442MA2       2.4 – 2.484            2.5


 2.8     Power supply system utilised

Power supply voltage, Vnom                         :   3.7 V DC




CSA Group Bayern GmbH                                                    File No. T44704-00-02WP, page 5 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                Rev. No. 5.1, 2018-11-19


                                                                                                                   CSA Confidential



                            FCC ID: 2ATBZDS02DC02                                IC: 25048-DS02DC02

3 TEST RESULT SUMMARY
Operating in the 2400 MHz – 2483.5 MHz band:

         FCC Rule Part             RSS Rule Part                             Description                     Result

           15.247(i)               RSS 102, 2.5.2                             MPE                       not applicable1
          KDB 447498               RSS 102, 2.5.1                 SAR exclusion consideration               passed
         OET Bulletin 65            RSS102, 3.2                   Co-location, Co-transmission          not applicable2

1   N/A, separation distance is < 20 cm
2   N/A, EUT incorporates only one transmitter


The mentioned RSS Rule Parts in the above table are related to:
RSS 102, Issue 5, March 2015




3.1 Final assessment

The equipment under test fulfills the EMI requirements cited in clause 1 test standards.




Date of receipt of test sample               :     acc. to storage records


Testing commenced on                         :     15 May 2019


Testing concluded on                         :     30 July 2019


Checked by:                                                                      Tested by:

                            Juergen Pessinger                                                         Willibald Probst
                            2019.07.30 10:08:28                                                       2019.07.30 10:00:16
                            +02'00'                                                                   +02'00'

                Jürgen Pessinger                                                              Willibald Probst
                  Radio Team                                                                   Radio Team




CSA Group Bayern GmbH                                                               File No. T44704-00-02WP, page 6 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                          Rev. No. 5.1, 2018-11-19


                                                                                                          CSA Confidential



                            FCC ID: 2ATBZDS02DC02                         IC: 25048-DS02DC02

4 TEST ENVIRONMENT

4.1 Address of the test laboratory

           CSA Group Bayern GmbH
           Ohmstrasse 1-4
           94342 STRASSKIRCHEN
           GERMANY



 4.2     Environmental conditions

During the measurement the environmental conditions were within the listed ranges:


Temperature:                                        15-35 °C


Humidity:                                           30-60 %


Atmospheric pressure:                              86-106 kPa




 4.3     Statement of the measurement uncertainty

The data and results referenced in this document are true and accurate. It is noted that the expanded measurement
uncertainty corresponds to the measurement results from the standard measurement uncertainty multiplied by the
coverage factor k = 2. The true value is located in the corresponding interval with a probability of 95 % The
measurement uncertainty was calculated for all measurements listed in this test report acc. to CISPR 16-4-2 /
11.2003 „Uncertainties, statistics and limit modelling – Uncertainty in EMC measurements“ and is documented in
the quality system acc. to DIN EN ISO/IEC 17025. For all measurements shown in this report, the measurement
uncertainty of the test laboratory, CSA Group Bayern GmbH, is below the measurement uncertainty as defined by
CISPR. Therefore, no special measures must be taken into consideration with regard to the limits according to
CISPR. Furthermore, component and process variability of devices similar to that tested may result in additional
deviation. The manufacturer has the sole responsibility of continued compliance of the device.


                                                                                   Confidence   Calculated
                     Measurement Type                             Range
                                                                                     Level      Uncertainty
       AC power line conducted emissions                  0.15 MHz to 30 MHz          95%        ± 3.29 dB
       EBW and OBW                                        2400 MHz to 3000 MHz        95%       ± 2.5 x 10-7
       Maximum peak conducted output power                2400 MHz to 3000 MHz        95%        ± 0.62 dB
       Power spectral density                             2400 MHz to 3000 MHz        95%        ± 0.62 dB
       Conducted Spurious Emissions                       9 kHz to 10000 MHz          95%        ± 2.15 dB
       Conducted Spurious Emissions                       10000 MHz to 40000 MHz      95%        ± 3.47 dB
       Radiated Spurious Emissions                        9 kHz to 30 MHz             95%        ± 3.53 dB
       Radiated Spurious Emissions                        30 MHz to 1000 MHz          95%        ± 3.71 dB
       Radiated Spurious Emissions                        1000 MHz to 10000 MHz       95%        ± 2.34 dB
       Field strength of the fundamental                  100 kHz to 100 MHz          95%        ± 3.53 dB

CSA Group Bayern GmbH                                                       File No. T44704-00-02WP, page 7 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                 Rev. No. 5.1, 2018-11-19


                                                                                                                  CSA Confidential



                            FCC ID: 2ATBZDS02DC02                                IC: 25048-DS02DC02

5 HUMAN EXPOSURE

5.1     SAR test exclusion consideration


5.1.1    Applicable standard

According to RF exposure guidance:
Systems operating under the provisions of this section shall be operated in a manner that the public is not exposed
to radio frequency energy levels in excess of the Commission’s guidelines.

5.1.2    Determination of the standalone SAR test exclusion threshold

Minimum separation distance between the radiating structure of the EUT, which is placed inside the ear and the user,
is < 5 mm. Therefore, a separation distance of 5 mm is used for the calculation as described under 4.3.1 a) of KDB
447498 D01 v06.

The formula under 4.3.1 a) of KDB 447498 D01 v06 for 100 MHz to 6 GHz for standalone equipment is used to
calculate the 1-g SAR test exclusion threshold:

[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]*[√f(GHz)] ≤ 3.0;

The max conducted average power (rounded up to the next mW value) is according the equipment:

                     Rated output power:                        0.8 mW                     -1.0 dBm
                     Tune-up tolerance:                         + 0 / - 0 dB
                     Maximum output power:                     -1.0 dBm                    0.8 mW

              Channel
                            Output power           Threshold
             frequency                                             Limit 1g    Limit 10g   Margin 1g   Margin 10g
                               (mW)                  level
               (MHz)
                2405              0.8                0.25             3.0        7.5          -2.8        -7.3
                2440              0.8                0.25             3.0        7.5          -2.8        -7.3
                2480              0.8                0.25             3.0        7.5          -2.7        -7.2

Conclusion:          The Threshold level is much lower than the limit for 1-g head or body SAR exclusion. SAR
                     measurement is NOT necessary.


The requirements are FULFILLED.


Remarks:            As worst-case, the rated (conducted) output power has been used.

                    -




CSA Group Bayern GmbH                                                               File No. T44704-00-02WP, page 8 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                         Rev. No. 5.1, 2018-11-19


                                                                                                                CSA Confidential



                            FCC ID: 2ATBZDS02DC02                           IC: 25048-DS02DC02


 5.2     Exemption limits for routine evaluation - SAR evaluation

5.2.1    Applicable standard

According to RSS-102, item 2.5.1:
SAR evaluation is required if the separation distance between the user and/or bystander and the antenna and/or
radiating element of the device is less than or equal to 20 cm, except when the device operates at or below the
applicable output power level (adjusted for tune-up tolerance) for the specified separation distance defined in Table 1.

   Table 1: SAR evaluation – Exemption limits for routine evaluation based on frequency and separation distance 4, 5

               Frequency (MHz)                                 Exemption Limits (mW)
                                             At              At            At            At            At
                                        separation      separation    separation    separation    separation
                                        distance of     distance of   distance of   distance of   distance of
                                          ≤5 mm           10 mm         15 mm         20 mm         25 mm
                      ≤ 300                71 mW         101 mW        132 mW        162 mW        193 mW
                       450                 52 mW         70 mW         88 mW         106 mW        123 mW
                       835                 17 mW         30 mW         42 mW         55 mW         67 mW
                      1900                 7 mW          10 mW         18 mW         34 mW         60 mW
                      2450                 4 mW           7 mW         15 mW         30 mW         52 mW
                      3500                 2 mW           6 mW         16 mW         32 mW         55 mW
                      5800                 1 mW           6 mW         15 mW         27 mW         41 mW

               Frequency (MHz)                                 Exemption Limits (mW)
                                               At            At            At            At            At
                                          separation    separation    separation    separation    separation
                                          distance of   distance of   distance of   distance of   distance of
                                            30 mm         35 mm         40 mm         45 mm        ≥50 mm
                       ≤ 300               223 mW        254 mW        284 mW        315 mW        345 mW
                        450                141 mW        159 mW        88 mW         195 mW        213 mW
                        835                80 mW         92 mW         177 mW        117 mW        130 mW
                       1900                99 mW         153 mW        225 mW        316 mW        431 mW
                       2450                83 mW         123 mW        173 mW        235 mW        309 mW
                       3500                86 mW         124 mW        170 mW        225 mW        290 mW
                       5800                56 mW          71 mW         85 mW         97 mW        106 mW

         4
           The exemption limits in Table 1 are based on measurements and simulations of half-wave dipole antennas
         at separation distances of 5 mm to 25 mm from a flat phantom, providing a SAR value of approximately 0.4
         W/kg for 1 g of tissue. For low frequencies (300 MHz to 835 MHz), the exemption limits are derived from a
         linear fit. For high frequencies (1900 MHz and above), the exemption limits are derived from a third order
         polynomial fit.
         5
           Transmitters operating between 0.003-10 MHz, meeting the exemption from routine SAR evaluation, shall
         demonstrate compliance to the instantaneous limits in Section 4.




CSA Group Bayern GmbH                                                           File No. T44704-00-02WP, page 9 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                       Rev. No. 5.1, 2018-11-19


                                                                                                               CSA Confidential



                            FCC ID: 2ATBZDS02DC02                       IC: 25048-DS02DC02


5.2.2    Cunclusion according RSS-102

Minimum separation distance between the radiating structure of the EUT, which is placed inside the ear and the
user, is < 5 mm.

                     Rated output power:              0.8   mW                    -1.0 dBm
                     Tune-up tolerance:               +0    / - 0 dB
                     Maximum output power:           -1.0   dBm                    0.8 mW
                     Antenna gain max:                2.5   dBi

                     Maximum EIRP:                   1.5 dBm                       1.4 mW
                     Minimum distance r:             5.0 mm


Maximum output power (EIRP) at 2450 MHz: 1.5 dBm ≙ 1.4 mW is < 4 mW;


Conclusion:          For the EUT SAR measurement is NOT necessary


The requirements are FULFILLED.


Remarks:            As worst-case, the rated output power (EIRP) has been used for the calculation.

                    -




CSA Group Bayern GmbH                                                     File No. T44704-00-02WP, page 10 of 10
Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY
Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440                                                      Rev. No. 5.1, 2018-11-19



Document Created: 2019-09-11 17:16:27
Document Modified: 2019-09-11 17:16:27

© 2019 FCC.report
This site is not affiliated with or endorsed by the FCC