RF Exposure info

FCC ID: 2AKXF-ALB010

RF Exposure Info

Download: PDF
FCCID_3372028

FCC Part 15, Subpart C, Section 15.247 – DTS Page 29 of 33 Alert Labs RN2903 FCC ID: 2AKXF-ALB010 5.5. RF EXPOSURE REQUIRMENTS [§§ 15.247(i), 1.1310 & 2.1091] 5.5.1. Limits § 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in 1.1307(b). Limits for Maximum Permissible Exposure (MPE) Frequency range Electric field strength Magnetic field strength Power density Averaging time (MHz) (V/m) (A/m) (mW/cm2) (minutes) (A) Limits for Occupational/Controlled Exposures 0.3-3.0 614 1.63 *(100) 6 2 3.0-30 1842/f 4.89/f *(900/f ) 6 30-300 61.4 0.163 1.0 6 300-1500 f/300 6 1500-100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *(100) 30 2 1.34-30 824/f 2.19/f *(180/f ) 30 30-300 27.5 0.073 0.2 30 300-1500 f/1500 30 1500-100,000 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density Note 1: Occupational/controlled limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for occupational/controlled exposure also apply in situations when an individual is transient through a location where occupational/controlled limits apply provided he or she is made aware of the potential for exposure. Note 2: General population/uncontrolled exposures apply in situations in which the general public may be exposed, or in which persons that are exposed as a consequence of their employment may not be fully aware of the potential for exposure or can not exercise control over their exposure. ULTRATECH GROUP OF LABS File #: 17SWIF042_FCC15C247DTS 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 March 17, 2017 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: vic@ultratech-labs.com, Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST)

FCC Part 15, Subpart C, Section 15.247 – DTS Page 30 of 33 Alert Labs RN2903 FCC ID: 2AKXF-ALB010 5.5.2. Method of Measurements Calculation Method of Power Density/RF Safety Distance: PG EIRP S  4  r 2 4  r 2 Where, P: power input to the antenna in mW EIRP: Equivalent (effective) isotropic radiated power. S: power density mW/cm2 G: numeric gain of antenna relative to isotropic radiator r: distance to centre of radiation in cm PG EIRP r  4  S 4  S 5.5.3. RF Evaluation Separation distance specified by Manufacturer is 31cm, the power density and MPE ratio are calculated for this distance Configuration 1: Alert Labs RN2903 radio-Standalone Maximum Equivalent Output Power MPE Frequency Antenna EIRP EIRP Distance, Margin RN2903 Conducted Power Density, S Limit 2 (MHz) Gain (dBi) (dBm) (mW) r (cm) 2 2 (mW/cm ) MPE (mW) (mW/cm ) (mW/cm ) Ratio 903 81 2.33 21.41 138.36 31 0.0114 0.602 -0.590 0.019 Configuration 2: Co-location Pursuant to KDB 447498 D01 General RF Exposure Guidance v06, Section 7.2: Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneously transmitting antennas incorporated in a host device is ≤ 1.0, according to calculated/estimated, numerically modeled, or measured field strengths or power density. ULTRATECH GROUP OF LABS File #: 17SWIF042_FCC15C247DTS 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 March 17, 2017 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: vic@ultratech-labs.com, Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST)

FCC Part 15, Subpart C, Section 15.247 – DTS Page 31 of 33 Alert Labs RN2903 FCC ID: 2AKXF-ALB010 As per the Manufacturer the EUT Alert Labs RN2903, can simultaneously transmit with either the cellular radio (SARA‐U260) or Wifi radio (Espressif Systems WROOM Module) . Configuration 2.1- EUT (RN2903) co-location with Cellular radio module- SARA‐U260 GSM/UMTS Module FCC ID: XPYSARAU260 IC: 8595A‐SARAU260 Equivalent SARA‐U260 SARA‐U260 Output Maximum Dista- FCC SARA‐U260 RN2903 Frequency EIRP Power and RN2903 Conducted Antenna nce MPE Limit MPE MPE (MHz) (mW) Density 2 MPE Ratio Power Gain (dBi) (cm) 2 (mW/cm ) Ratio Ratio (mW/cm ) Sum (mW) 848.8 1256.03 3.50 2811.90 31 0.233 0.566 0.411 0.019 0.430 1850.2 629.51 3.10 1285.29 31 0.106 1.000 0.106 0.019 0.125 846.6 1258.93 3.50 2818.38 31 0.233 0.564 0.414 0.019 0.433 846.6 251.19 3.50 562.34 31 0.047 0.564 0.083 0.019 0.102 836.6 251.19 3.50 562.34 31 0.047 0.558 0.083 0.019 0.102 1852.4 251.19 3.10 512.86 31 0.042 1.000 0.042 0.019 0.061 1907.6 251.19 3.10 512.86 31 0.042 1.000 0.042 0.019 0.061 1880.0 251.19 3.10 512.86 31 0.042 1.000 0.042 0.019 0.061 Configuration 2.2- EUT(RN2903) co-location with Wifi radio module- Espressif Systems WROOM Wi-Fi Module FCC ID: 2AC7Z-ESPWROOM02 IC: 21098-ESPWROOM02 Equivalent WROOM WROOM Wi- WROOM Output Maximum Dista- Wi-Fi FCC RN2903 Fi Frequency EIRP Wi-Fi Conducted Antenna nce Power MPE Limit MPE and RN2903 (MHz) (mW) 2 MPE Power Gain (dBi) (cm) Density (mW/cm ) Ratio MPE Ratio 2 Ratio (mW) (mW/cm ) Sum 2412.0 225 2.00 356.45 31 0.030 1.000 0.030 0.019 0.049 * The test data of the radio modules represented in the above tables are the worst-case configuration (maximum MPE ratio) derived from the original radio modules MPE reports. Refer to these reports for details. Verdict: The user manual specified distance of 31 cm is sufficient to meet the MPE exposure limits ie, Sum of MPE ratio <1. ULTRATECH GROUP OF LABS File #: 17SWIF042_FCC15C247DTS 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 March 17, 2017 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: vic@ultratech-labs.com, Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST)


Document Created: 2017-04-19 16:37:24
Document Modified: 2017-04-19 16:37:24
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC