TXSERIES Smart Projector RF Exposure Info RF Exposure Info Guizhou CVIM Technology Co., Ltd.
Guizhou CVIM Technology Co., Ltd. Smart Projector
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FCC ID Filing: 2AKWS-TXSERIES
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RF Exposure Evaluation For FCC ID: 2AKWS-TXSERIES Refer user manual this device is a Smart Projector, and this device was designed used in Mobile devices that the minimum distance between human’s body is 20cm. Based on the 47CFR 2.1091, this device belongs to Mobile device. The definition of the category as following: Mobile Derives: CFR Title 47 §2.1091(b) (b) For purposes of this section, a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. FCC KDB 447498 D01 General RF Exposure Guidance v06 Limit Devices operating in standalone mobile exposure conditions may contain a single transmitter or multiple transmitters that do not transmit simultaneously. A minimum test separation distance ≥ 20 cm is required between the antenna and radiating structures of the device and nearby persons to apply mobile device exposure limits. The distance must be fully supported by the operating and installation configurations of the transmitter and its antenna(s), according to the source-based time-averaged maximum power requirements of § 2.1091(d)(2). In cases where cable losses or other attenuations are applied to determine compliance, the most conservative operating configurations and exposure conditions must be evaluated. The minimum test separation distance required for a device to comply with mobile exposure conditions must be clearly identified in the installation and operating instructions, for all installation and exposure conditions, to enable users and installers to comply with RF exposure requirements. For mobile devices that have the potential to operate in portable device exposure conditions, similar to the configurations described in § 2.1091(d)(4), a KDB inquiry is required to determine the SAR test requirements for demonstrating compliance. When the categorical exclusion provision of § 2.1091(c) applies, the minimum test separation distance may be estimated, when applicable, by simple calculations according to plane-wave equivalent conditions, to ensure the transmitter and its antenna(s) can operate in manners that meet or exceed the estimated distance. The source-based time-averaged maximum radiated power, according to the maximum antenna gain, must be applied to calculate the field strength and power density required to establish the minimum test separation distance. When the estimated test separation distance becomes overly conservative and does not support compliance, MPE measurement or computational modeling may be used to determine the required minimum separation distance. According to FCC Part 1.1307, systems operating under the provisions of this section shall be operated in a manner the 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 Range (MHz) Electric Field Strength(E)(V/m) Magnetic Field Strength (H)(A/m) Power Density (S)(mW/cm2) 0.3-1.34 614 1.63 (100)* 1.34-30 824/f 2.19/f (180/f2)* 30-300 27.5 0.073 0.2 300-1500 f/1500 1500-100,000 1.0 MPE calculation formula Where: S = power density P = output power (mW) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = Separation distance between radiator and human body (cm) Test data BLUETOOTH 3.0 Mode GFSK ∏/4-DQPSK 8-DPSK Peak Power (dBm) 5.55 4.80 5.01 BLE Mode Low Channel Middle Channel High Channel Peak Power (dBm) -0.68 0.64 0.30 Antenna 0 2.4G WIFI Mode Antenna Gain 802.11b 802.11g Peak Power (dBm) 21.61 21.99 5150 MHz ~ 5725 MHz Mode Antenna Gain 802.11a Peak Power (dBm) 16.76 5725 MHz ~ 5850 MHz Mode Antenna Gain 802.11a Peak Power (dBm) 13.05 Note: This report listed the worst case peak power value, please refer to RF test report for more details. Antenna 1 2.4G WIFI Mode Antenna Gain 802.11b 802.11g Peak Power (dBm) 21.33 20.11 5150 MHz ~ 5725 MHz Mode Antenna Gain 802.11a Peak Power (dBm) 15.46 5725 MHz ~ 5850 MHz Mode Antenna Gain 802.11a Peak Power (dBm) 12.45 Note: This report listed the worst case peak power value, please refer to RF test report for more details. Antenna 0+ Antenna 1 2.4G WIFI Mode Antenna Gain 802.11n20 802.11n40 Peak Power (dBm) 24.97 24.75 5G WIFI Mode Conducted Power (dBm) Antenna Gain 5150 MHz ~ 5725 MHz 5725 MHz ~ 5850 MHz 802.11n20 802.11n40 802.11n20 802.11n40 18.46 18.16 12.34 11.10 Note: This report listed the worst case peak power value, please refer to RF test report for more details. Test Configuration Mode Antenna Antenna 0 Antenna 1 Antenna 0 + Antenna1 802.11a √ √ 802.11b √ √ 802.11g √ √ 802.11n20 √ √ √ 802.11n40 √ √ √ Note 1: The 802.11a, 802.11b and 802.11g only support single antenna launch. Note 2: The 802.11n20 and 802.11n40 support double antennas launch. Turn-up power Mode Range (dBm) Bluetooth 3.0 3.10-6.00 Bluetooth 4.0 (-1.00)-1.10 2.4G WIFI(802.11g Antenna 0) 21.30-22.50 2.4G WIFI(MIMO) 24.20-25.50 5150 MHz ~ 5725 MHz(802.11a Antenna 0) 15.00-17.30 5725 MHz ~ 5850 MHz (802.11a Antenna 0) 12.00-13.50 5150 MHz ~ 5725 MHz(802.11n20 MIMO) 18.00-19.00 5725 MHz ~ 5850 MHz (802.11n20 MIMO) 11.00-12.80 Test result Evolution mode Maximum peak output power （dBm） Antenna Gain (typical) (dBi): Limit of Power Density (mW/cm²) Total Power (mw) Distance (cm) Power Density (mW/cm²) Verdict Bluetooth 3.0 6.00 3.98 20 7.918*10-4 Pass 2.4GWIFI(802.11g Antenna 0) 22.50 177.83 20 0.035 Pass 2.4G WIFI (MIMO) 25.50 354.81 20 0.071 Pass 5150 MHz ~ 5725 MHz(802.11a Antenna 0) 17.30 53.70 20 0.011 Pass 5725 MHz ~ 5850 MHz (802.11a Antenna 0) 13.50 22.39 20 0.004 Pass 5150 MHz ~ 5725 MHz(802.11n20 MIMO) 19.00 79.43 20 0.016 Pass 5725 MHz ~ 5850 MHz (802.11n20 MIMO) 12.80 19.05 20 0.004 Pass Collocated Power Density Calculation Evolution mode Frequency(MHz) Power Density/Limit Bluetooth 3.0 2400MHz ~ 2483.5MHz 7.918*10-4 2.4GWIFI(802.11g Antenna 0) 2412MHz ~ 2462MHz 0.035 Σ(Power Density / Limit) of Bluetooth 3.0+WIFI 2.4GHz Verdict Pass 0.036 Pass Evolution mode Frequency(MHz) Power Density/Limit Bluetooth 3.0 2400MHz ~ 2483.5MHz 7.918*10-4 5150 MHz ~ 5725 MHz(802.11a Antenna 0) 5150 MHz ~ 5725 MHz 0.011 Evolution mode Frequency(MHz) Power Density/Limit Bluetooth 3.0 2400MHz ~ 2483.5MHz 7.918*10-4 5725 MHz ~ 5850 MHz(802.11a Antenna 0) 5725 MHz ~ 5850 MHz Σ(Power Density / Limit) of Bluetooth 3.0+WIFI 5.2GHz Verdict Pass 0.012 Pass Σ(Power Density / Limit) of Bluetooth 3.0+WIFI 5.8GHz Verdict Pass 0.005 0.004 Pass Note 1: 1. Σ(Power Density / Limit): This is a summation of [(power density for each transmitter/ antenna included in the simultaneous transmission)/ (corresponding MPE limit)], for WLAN 2.4GHz+WLAN 5GHz. 2. Both of the 2.4GHz/5GHz can transmit simultaneously, the formula of calculated the MPE is CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density 3. Both of the 5GHz WIFI and 2.4GHz WIFI can’t transmit simultaneously at same time. The 5GHz WIFI (MIMO) or 2.4GHz WIFI (MIMO) and Bluetooth can’t transmit simultaneously at same time. The 5GHz WIFI or 2.4GHz WIFI and Bluetooth can transmit simultaneously at same time. 4. The worst-case situation is 0.036, which is less than “1”. This confirmed that the device comply with FCC 1.1310 MPE limit. 5. The Smart Projector work frequency range used are 2400 MHz ~ 2483.5 MHz, 5150 MHz ~ 5725 MHz and 5725 MHz ~ 5850 MHz the result close to the limit by the above formula. 6. More power list please refer to RF test report. Conclusion: According to 47 CFR §2.1091, the RF exposure analysis concludes that the RF Exposure is FCC compliant.
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.6 Linearized : Yes Encryption : Standard V2.3 (128-bit) User Access : Print, Extract, Print high-res Language : zh-CN Tagged PDF : Yes XMP Toolkit : Adobe XMP Core 5.2-c001 63.139439, 2010/09/27-13:37:26 Format : application/pdf Creator : 李红梅 Title : RF Exposure Evaluation For FCC ID: 2AA9G-1150B; IC : 11705A-1150B Create Date : 2017:08:10 11:14:59+08:00 Creator Tool : Microsoft® Word 2013 Modify Date : 2017:08:10 11:29:55+08:00 Metadata Date : 2017:08:10 11:29:55+08:00 Producer : Microsoft® Word 2013 Document ID : uuid:91442299-fe3c-4dcd-b438-2501b833b839 Instance ID : uuid:d5c8a224-6d1d-4dd1-80d4-7468def78f73 Page Count : 5 Author : 李红梅