EMC
陈辉
RF Exposure
Conmo Electronic Co., Ltd 5297054 Body fat scale 2AJ5E-5297054 2AJ5E5297054 5297054
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Document DEVICE REPORTGetApplicationAttachment.html?id=8201565Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AJ5E-5297054 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of /4. As for devices with antennas of length greater than /4 where the gain is not well defined, but always less than that of a half-wave dipole (length /2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1). This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AJ5E-5297054 Results RF Exposure at Separation distance (cm): 0.5 Mode LE LE LE Frequency Conducted Antenna [MHz] Power [dBm] Ant1 Ant1 Ant1 2402 2440 2480 -1.49 -0.97 -1.01 Manufacturing tolerance Target Power [dBm] -2 -1.5 -1.5 Tolerance ±[dB] 1 1 1 Antenna Gain [dBi] -1.08 -1.08 -1.08 Max of ERP and Conducted Power including Tune Up [dBm] [mW] -1 0.79 -0.5 0.89 -0.5 0.89 SAR-based exemption threshold Pth [mW] 2.79 2.75 2.72 Max of ERP and Conducted Power including Tune Up (dBm) = Max Conducted Tune Up Power(dBm) and Max Conducted Tune Up Power(dBm) + Antenna Gain(dBi)-2.15), whichever is greater. The Maximum Erp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required. This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2
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- 2AJ5E-5297054 - Conmo Electronic Co., Ltd Body fat scale [-5297054] Microsoft Word 2021