Analysis Report

FCC ID: XHT100121504

RF Exposure Info

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FCCID_2678167

INTERTEK TESTING SERVICES Analysis Report The equipment under test (EUT) is a portable transmitter for a TORNADO TUMBLER operating at 27.145 MHz. The EUT is powered by one 9.0V 6F22 size battery. For more detail information pls. refer to the user manual. Antenna Type: Integral antenna Antenna Gain: 0dBi The nominal conducted output power specified: -16.0dBm (+/- 3dB) The nominal radiated output power (e.r.p) specified: -18.15dBm (+/- 3dB) Modulation Type: Pulse modulation According to the KDB 447498: The worst-case peak radiated emission for the EUT is 78.5dBµV/m at 3m in the frequency 27.145MHz The EIRP = [(FS*D) ^2 / 30] mW= -16.73dBm The ERP = EIRP – 2.15 = -18.88 dBm which is within the production variation. The maximun conducted output power specified is -13dBm =0.05mW The source- based time-averaging conducted output power = 0.05* Duty Cycle mW < 0.1mW (Duty Cycle<100%) The SAR Exclusion Threshold Level for 27.145MHz when the minimum test separation distance is < 50mm: = 474 * [1 + log(100/f(MHz)]/2 = 371.2 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing. Transmitter Duty Cycle Calculation The duration of one cycle = 17.7391ms Effective period of the cycle = 478.3µs x 10 + 1.4783ms x 4 = 10.6962ms DC = 10.6962ms / 17.7391ms = 0.6029 or 60.29% Therefore, the averaging factor is found by 20 log10 0.6029 = -4.4 dB FCC ID: XHT100121504 1


Document Created: 2015-07-13 20:55:44
Document Modified: 2015-07-13 20:55:44
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