RF Exposure LE910B4-NA

FCC ID: RI7LE910NAV2

RF Exposure Info

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FCCID_3679971

DEKRA Testing and Certification S.A.U. Parque Tecnológico de Andalucía Severo Ochoa, 2 & 6 29590 Málaga Spain Date: November 28th, 2017 Report: 55448_LE910B4-NA RF exposure analysis for the equipment – Maximum Antenna Gain Model: LE910B4-NA FCC ID: RI7LE910NAV2 IC: 5131A-LE910NAV2 The LE910B4-NA is a module designed to be installed in other devices. These devices are to be used only for fixed and mobile applications. If the final product after integration is intended for portable use, new applications and FCC and ISED are required. The antenna(s) used for these transmitters must be installed to provide a separation distance of at least 20 cm from all the persons and must not be co-located or operating in conjunction with any other antenna or transmitter except as under the conditions described KDB 447498 D01 General RF Exposure Guidance. MPE exposure limits The table below is excerpted from Table 1B of 47 CFR 1.1310 titled Limits for Maximum Permissible Exposure (MPE), Limits for General Population/Uncontrolled Exposure: Frequency Range (MHz) Power density (mW/cm2) Averaging time (minutes) 300 – 1500 f (MHz) /1500 30 1500 – 100.000 1,0 30 The table below is excerpted from RSS-102, Issue 5, 4, titled “Table 4: RF Field Strength Limits for Devices Used by the General Public”: Frequency Range (MHz) Power density (W/m2) Averaging time (minutes) 300 – 6000 0.02619·f 0.6834 6 EIRP limits Frequency FCC MPE ISED MPE FCC/IC FCC EIRP ISED (MHz) Band limit limit MPE limit limit EIRP limit (Lowest (mW/cm2) (mW/cm2) (mW/cm2) (W) (W) Frequency) FDD 5 824,7 0,550 0,258 0,25771 11,48 11,50 WCDMA FDD V 826,4 0,551 0,258 0,25807 11,48 11,50 FDD 4 1710,7 1,000 0,424 0,42431 1,00 1,00 FDD 2 1850,7 1,000 0,448 0,44775 2,00 2,00 WCDMA FDD II 1852,4 1,000 0,448 0,44803 2,00 2,00 FDD 12 699,0 0,466 0,230 0,23017 4,92 5,00 FDD 13 777,0 0,518 0,247 0,24743 4,92 5,00 PG Using the equation S to calculate the exposure to electromagnetic fields 4R 2 where: S = power density (in appropriate units, e.g. mW/cm 2) P = power input to the antenna (in appropriate units, e.g., mW) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the centre of radiation of the antenna (appropriate units, e.g., cm)

The maximum antenna gain that can be used in the Telit LE910B4-NA module is shown in the following table: Maximum Evaluation Maximun Maximun antenna Frequency Antenna gain to Antenna gain to Antenna gain to conducted FCC MPE ISED MPE FCC/IC MPE FCC EIRP ISED EIRP distance for antenna gain to gain to meet all the (MHz) Duty cicle meet FCC/ISED meet FCC EIRP meet ISED EIRP Band output power limit limit limit limit limit compliance with meet all the limits per frequency (Low est (%) MPE limit limit limit (per tune-up) (mW/cm 2) (mW/cm 2) (mW/cm 2) (W) (W) MPE limits limits band Frequency) (dBi) (dBi) (dBi) (dBm) (cm) (dBi) (dBi) FDD 5 824,7 24,00 100,0% 0,550 0,258 0,25771 11,48 11,50 20 7,12 16,59 16,60 7,12 6,63 WCDMA FDD V 826,4 24,50 100,0% 0,551 0,258 0,25807 11,48 11,50 20 6,63 16,09 16,10 6,63 FDD 4 1710,7 24,00 100,0% 1,000 0,424 0,42431 1,00 1,00 20 9,28 6,00 6,00 6,00 6,00 FDD 2 1850,7 24,00 100,0% 1,000 0,448 0,44775 2,00 2,00 20 9,52 9,01 9,01 9,01 8,51 WCDMA FDD II 1852,4 24,50 100,0% 1,000 0,448 0,44803 2,00 2,00 20 9,02 8,51 8,51 8,51 FDD 12 699,0 24,00 100,0% 0,466 0,230 0,23017 4,92 5,00 20 6,63 12,91 12,98 6,63 6,63 FDD 13 777,0 24,00 100,0% 0,518 0,247 0,24743 4,92 5,00 20 6,94 12,91 12,98 6,94 Maximum Evaluation Frequency PG (MHz) conducted Duty cicle Antenna FCC/IC MPE FCC EIRP limit ISED EIRP limit FCC/ISED distance for S  MPE Ratio Band (Low est output power (%) gain limit 2 (W) (W) EIRP limit compliance 4 R 2 (S/MPE limit) (per tune-up) (dBi) (mW/cm ) (W) with MPE Frequency) (mW/cm 2) (dBm) limits (cm) FDD 5 824,7 24,00 100,0% 6,63 0,25771 11,48 11,50 11,48 20 0,23000 0,89248 WCDMA FDD V 826,4 24,50 100,0% 6,63 0,25807 11,48 11,50 11,48 20 0,25807 0,99997 FDD 4 1710,7 24,00 100,0% 6,00 0,42431 1,00 1,00 1,00 20 0,19894 0,46886 FDD 2 1850,7 24,00 100,0% 8,51 0,44775 2,00 2,00 2,00 20 0,35459 0,79195 WCDMA FDD II 1852,4 24,50 100,0% 8,51 0,44803 2,00 2,00 2,00 20 0,39786 0,88802 FDD 12 699,0 24,00 100,0% 6,63 0,23017 4,92 5,00 4,92 20 0,23000 0,99926 FDD 13 777,0 24,00 100,0% 0,00 0,24743 4,92 5,00 4,92 20 0,04997 0,20197 Yours sincerely, P.A. __________________________ By: Ken Bedsnaz Title: VP Application Engineer Company: Telit Communications S.p.A. Telephone: 1-919-415-1517 e-mail: Ken.Bednasz@telit.com


Document Created: 2017-12-05 11:06:13
Document Modified: 2017-12-05 11:06:13
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