OMA60 WiFi Access Point RF Exposure Info 1609105-A60-FCC Test Result of RF Exposure Evaluation Open Mesh, Inc.
Open Mesh, Inc. WiFi Access Point
FCC ID
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OMA60
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FCC ID Filing: WT8OMA60
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WiFi Access Point
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CERPASS TECHNOLOGY CORP. Report No.: 1609105 Radio Frequency Exposure LIMIT According to §15.247(i), 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 levels in excess of the Commission's guidelines. See § 1.1307(b)(1) of this chapter. EUT Specification EUT Frequency band (Operating) Device category Exposure classification Antenna diversity Max. output power Antenna gain (Max) Evaluation applied WiFi Access Point WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.150GHz ~ 5.250GHz WLAN: 5.250GHz ~ 5.350GHz WLAN: 5.470GHz ~ 5.725GHz WLAN: 5.725GHz ~ 5.850GHz Bluetooth: 2.402GHz ~ 2.480 GHz Portable (<20cm separation) Mobile (>20cm separation) Occupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Band: 2412-2462MHz 802.11b: 27.26 dBm (532.28 mW) 802.11g: 29.63 dBm (918.47 mW) 802.11n (20MHz): 29.66 dBm (923.90 mW) 802.11n (40MHz): 28.87 dBm (770.34 mW) Band: 5150-5250 MHz 802.11a: 25.22 dBm 802.11an (20MHz): 25.47 dBm 802.11an (40MHz): 24.31 dBm 802.11ac (20MHz): 25.53 dBm 802.11ac (40MHz): 24.37 dBm 802.11ac (80MHz): 14.70 dBm Band: 5725-5850 MHz 802.11a: 28.48 dBm 802.11an (20MHz): 28.44 dBm 802.11an (40MHz): 27.78 dBm 802.11ac (20MHz): 28.50 dBm 802.11ac (40MHz): 27.83 dBm 802.11ac (80MHz): 21.06 dBm 2412-2462MHz: 4.6dBi 5150-5250MHz: 5.1dBi MPE Evaluation* SAR Evaluation N/A Remark: 1. The maximum output power is 29.66dBm (923.90 mW) at 2437 MHz (with numeric 2 antenna gain.) 2. DTS device is not subject to routine RF evaluation; MPE estimate is used to justify the compliance. 3. For mobile or fixed location transmitters, no SAR consideration applied. The maximum power density is 1.0 mW/cm2 even if the calculation indicates that the power density would be larger. *Note: Simultaneous transmission is not applicable for this EUT. Cerpass Technology Corp. Issued date Page No. FCC ID. : Dec. 16, 2016 : 1 of 3 : WT8OMA60 CERPASS TECHNOLOGY CORP. Report No.: 1609105 TEST RESULTS No non-compliance noted. Calculation Given E E2 30 P G & S 3770 Where E = Field strength in Volts / meter P = Power in Watts G = Numeric antenna gain d = Distance in meters S = Power density in milliwatts / square centimeter Combining equations and re-arranging the terms to express the distance as a function of the remaining variables yields: S 30 P G 3770d 2 Changing to units of mW and cm, using: P (mW) = P (W) / 1000 and d (cm) = d(m) / 100 Yields S 30 P / 1000 G PG 0.0796 d2 3770 d / 100 Where Equation 1 d = Distance in cm P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Cerpass Technology Corp. Issued date Page No. FCC ID. : Dec. 16, 2016 : 2 of 3 : WT8OMA60 CERPASS TECHNOLOGY CORP. Report No.: 1609105 Maximum Permissible Exposure Modulation Mode 11b 11g 11n HT20 11n HT40 11a 11n HT20 11n HT40 11ac VHT20 11ac VHT40 11ac VHT80 Frequency band (MHz) 2412-2462 2412-2462 2412-2462 2422-2452 5150-5250 5725-5850 5150-5250 5725-5850 5150-5250 5725-5850 5150-5250 5725-5850 5150-5250 5725-5850 5150-5250 5725-5850 Max. Conducted Antenna Distance output power Gain(dBi) (cm) (dBm) 27.26 4.6 20 29.63 4.6 20 29.66 4.6 20 28.87 4.6 20 25.22 5.1 20 28.48 5.1 20 25.47 5.1 20 28.44 5.1 20 24.31 5.1 20 27.78 5.1 20 25.53 5.1 20 28.50 5.1 20 24.37 5.1 20 27.83 5.1 20 14.70 5.1 20 21.06 5.1 20 Power Density (mW/cm2) Limit (mW/cm2) 0.3054 0.5270 0.5306 0.4420 0.2142 0.4535 0.2266 0.4496 0.1738 0.3863 0.2300 0.4562 0.1760 0.3908 0.0190 0.0822 NOTE: Total (Chain0+Chain1) , the formula of calculated the MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density Cerpass Technology Corp. Issued date Page No. FCC ID. : Dec. 16, 2016 : 3 of 3 : WT8OMA60
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