RF Exposure

FCC ID: LDKHDGWI1903

RF Exposure Info

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FCCID_4170500

Cisco Systems, Inc. FCC ID: LDKHDGWI1903 FCC §2.1091, §15.407(f), & LP0002-2018 §5.20.2 - RF Exposure 1.1 Applicable Standards According to FCC §15.247(i), §15.407(f) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for General Population/Uncontrolled Exposure Frequency Electric Field Magnetic Field Power Density Averaging Time Range Strength Strength (mW/cm2) (minutes) (MHz) (V/m) (A/m) 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 1.2 MPE Prediction Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 S = PG/4R² Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna

Cisco Systems, Inc. FCC ID: LDKHDGWI1903 1.3 MPE Results for FCC BLE: Maximum average output power at antenna input terminal (dBm): 4.21 Maximum average output power at antenna input terminal (mW): 2.64 Prediction distance (cm): 30 Prediction frequency (MHz): 2402 Maximum Antenna Gain, typical (dBi): 2 Maximum Antenna Gain (numeric): 1.58 Power density of prediction frequency at 30.0 cm (mW/cm2): 0.0004 FCC MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0 2.4 GHz Wi-Fi: Maximum average output power at antenna input terminal (dBm): 24.3 Maximum average output power at antenna input terminal (mW): 269.15 Prediction distance (cm): 30 Prediction frequency (MHz): 2437 Maximum Antenna Gain, typical (dBi): 10 Maximum Antenna Gain (numeric): 10 Power density of prediction frequency at 30.0 cm (mW/cm2): 0.238 FCC MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0 5.2 GHz band: Maximum average output power at antenna input terminal (dBm): 21.04 Maximum average output power at antenna input terminal (mW): 127.06 Prediction distance (cm): 30 Prediction frequency (MHz): 5200 Maximum Antenna Gain, typical (dBi): 14.45 Maximum Antenna Gain (numeric): 27.86 Power density of prediction frequency at 30.0 cm (mW/cm2): 0.313 FCC MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0

Cisco Systems, Inc. FCC ID: LDKHDGWI1903 5.3 GHz band: Maximum average output power at antenna input terminal (dBm): 13.68 Maximum average output power at antenna input terminal (mW): 23.335 Prediction distance (cm): 30 Prediction frequency (MHz): 5270 Maximum Antenna Gain, typical (dBi): 13.78 Maximum Antenna Gain (numeric): 23.878 Power density of prediction frequency at 30.0 cm (mW/cm2): 0.049 FCC MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0 5.6 GHz band: Maximum average output power at antenna input terminal (dBm): 20.75 Maximum average output power at antenna input terminal (mW): 118.85 Prediction distance (cm): 30 Prediction frequency (MHz): 5700 Maximum Antenna Gain, typical (dBi): 6.88 Maximum Antenna Gain (numeric): 4.88 Power density of prediction frequency at 30.0 cm (mW/cm2): 0.051 FCC MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0 5.8 GHz band: Maximum average output power at antenna input terminal (dBm): 23.87 Maximum average output power at antenna input terminal (mW): 243.78 Prediction distance (cm): 30 Prediction frequency (MHz): 5755 Maximum Antenna Gain, typical (dBi): 12.02 Maximum Antenna Gain (numeric): 15.92 Power density of prediction frequency at 30.0 cm (mW/cm2): 0.343 FCC MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0 Radio Co-location BLE + 2.4 GHz Wi-Fi + 5 GHz Wi-Fi: 0.0004/1 + 0.238/1 + 0.343/1 = 0.581 < 1 Conclusion The device is compliant with the requirement MPE limit for uncontrolled exposure. All transceiver modules must be installed with a separation distance of no less than 30 cm from all persons.


Document Created: 2019-03-30 03:18:00
Document Modified: 2019-03-30 03:18:00
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