T39706-00-02KJ - Attachment B - RF Exposure - revised

FCC ID: TXTWC18CV

RF Exposure Info

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FCCID_2984925

Attachment B (RF Exposure evaluation) Type / Model Name : WC18CV Product Description : Inductive battery charger system Applicant : Robert Bosch GmbH Address : Postfach 10 01 56 70745 Leinfelden-Echterdingen; GERMANY Manufacturer : Robert Bosch GmbH Address : Postfach 10 01 56 70745 Leinfelden-Echterdingen; GERMANY Licence holder : Robert Bosch GmbH Address : Postfach 10 01 56 70745 Leinfelden-Echterdingen; GERMANY according to 10. May 2016 Test Report No. : T39706-00-02KJ ______________________________________________________________________________________________ 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. T39706-00-02KJ, page 1 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 4.0, 2015-04-17

FCC ID: TXTWC18CV Contents 1 TEST ST AND ARDS 3 3 TEST CONDITIONS AND RESULTS 4 3.1 RF exposure requirements (H-Field) 4 3.2 RF exposure requirements (E-Field) 7 4 USED TEST EQUIPMENT AND ACCESSORIES 10 CSA Group Bayern GmbH File No. T39706-00-02KJ, page 2 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV 1 TEST STANDARDS The tests were performed according to following standards: KDB 680106 D01 v02: 2013 RF Exposure considerations for low power consumer wireless power transfer applications CSA Group Bayern GmbH File No. T39706-00-02KJ, page 3 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV 3 TEST CONDITIONS AND RESULTS 3.1 RF exposure requirements (H-Field) For test instruments and accessories used see section 6 Part CPR 1. 3.1.1 Description of the test location Test location: A1 Test distance: 10 cm 3.1.2 Photo documentation of the test set-up (Scale: 10 cm per square) 3.1.3 Used field probe Manufacture: Type: Frequency range: Narda Safety Test Solutions ELT-400 with 1 Hz to 400 kHz 100 cm2 B field probe CSA Group Bayern GmbH File No. T39706-00-02KJ, page 4 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV 3.1.4 Applicable standard According to KDB 680106 D01 v02, Section 3, 3): For devices designed for typical desktop applications, such a wireless charging pads, RF exposure evaluation should be conducted assuming a user separation distance of 10 cm. E and H field strength measurements or numerical modeling may be used to demonstrate compliance. Measurements should be made from all sides and the top of the primary/client pair, with the 10 cm measured from the center of the probe(s) to the edge of the device. Emissions between 100 kHz to 300 kHz should be assessed versus the limits at 300 kHz in Table 1 of Section 1.1310: 614 V/m and 1.63 A/m. A KDB inquiry is required to determine the applicable exposure limits below 100 kHz. 3.1.5 Description of Measurement The maximum magnetic field strength was measured radiated, 10cm surrounding the device. The EUT is measured in TX continuous mode, modulated, under normal conditions. The exposure level tester was set in RMS detection mode with max. hold function. Each measurement point (MP) was tested over 6 minutes. Tested opeartion mode: charging mode Operation frequencies: - TX at 141.6 kHz and 145.5 kHz - charging / transmitting frequency - TX at 124.3 kHz - resonant frequency detection (with battery present) - TX at 210.5 kHz - sync pulse transmission 3.1.6 Test result CSA Group Bayern GmbH File No. T39706-00-02KJ, page 5 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV Magnetignetic Conversion Measurement Limit Delta field in to (dB) Point (MP) (A/m RMS) (µT RMS) (A/m RMS) 1 0.901 0.721 1.63 -7.1 2 0.517 0.414 1.63 -11.9 3 0.730 0.584 1.63 -8.9 4 0.648 0.518 1.63 -10.0 5 1.508 1.206 1.63 -2.6 6 1.355 1.084 1.63 -3.5 The requirements are FULFILLED. Remarks: All measurements where performed in charging mode in the frequency range from 124.3 kHz to 210.5 kHz because this are the worst case conditions. CSA Group Bayern GmbH File No. T39706-00-02KJ, page 6 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV 3.2 RF exposure requirements (E-Field) For test instruments and accessories used see section 6 Part CPR 1. 3.2.1 Description of the test location Test location: A1 Test distance: 10 cm 3.2.2 Photo documentation of the test set-up (Scale: 10 cm per square) CSA Group Bayern GmbH File No. T39706-00-02KJ, page 7 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV 3.2.3 Used field probe Manufacture: Type: Frequency range: Narda Safety Test Solutions PMM EP-602 5 kHz to 9.25 GHz 3.2.4 Applicable standard According to KDB 680106 D01 v02, Section 3, 3): For devices designed for typical desktop applications, such a wireless charging pads, RF exposure evaluation should be conducted assuming a user separation distance of 10 cm. E and H field strength measurements or numerical modeling may be used to demonstrate compliance. Measurements should be made from all sides and the top of the primary/client pair, with the 10 cm measured from the center of the probe(s) to the edge of the device. Emissions between 100 kHz to 300 kHz should be assessed versus the limits at 300 kHz in Table 1 of Section 1.1310: 614 V/m and 1.63 A/m. A KDB inquiry is required to determine the applicable exposure limits below 100 kHz. 3.2.5 Description of Measurement The maximum electric field strength was measured radiated, 10cm surrounding the device. The EUT is measured in TX continuous mode, modulated, under normal conditions. The exposure level tester was set in peak detection mode with max. hold function. Each measurement point (MP) was tested over 6 minutes. Tested opeartion mode: charging mode Operation frequencies: - TX at 141.6 kHz and 145.5 kHz - charging / transmitting frequency - TX at 124.3 kHz - resonant frequency detection (with battery present) - TX at 210.5 kHz - sync pulse transmission 3.2.6 Test result CSA Group Bayern GmbH File No. T39706-00-02KJ, page 8 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV Measurement Electric field Limit Delta Point (MP) (V/m) (V/m PKI) (dB) 1 14.7 614 -32.4 2 10.5 614 -35.3 3 12.8 614 -33.6 4 9.6 614 -36.1 5 19.2 614 -30.1 6 15.5 614 -32.0 The requirements are FULFILLED. Remarks: All measurements where performed in charging mode in the frequency range from 124.3 kHz to 210.5 kHz because this are the worst case conditions. CSA Group Bayern GmbH File No. T39706-00-02KJ, page 9 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30

FCC ID: TXTWC18CV 4 USED TEST EQUIPMENT AND ACCESSORIES All test instruments used are calibrated and verified regularly. The calibration history is available on request. Test ID Model Type Equipment No. Next Calib. Last Calib. Next Verif. Last Verif. CPR 1 Exposure Level Tester ELT-400 01-02/40-13-001 11/02/2016 11/02/2015 B-Field Probe 100 cm² 01-02/40-13-002 09/02/2016 09/02/2015 Isotrope Electric Field EP-602 02-02/50-15-069 22/07/2016 22/07/2015 CSA Group Bayern GmbH File No. T39706-00-02KJ, page 10 of 10 Ohmstrasse 1-4  94342 STRASSKIRCHEN  GERMANY Tel.: +49(0)9424-94810  Fax: +49(0)9424-9481440 Rev. No. 3.0, 2014-01-30


Document Created: 2019-07-14 23:33:02
Document Modified: 2019-07-14 23:33:02
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