RF Exposure Report

FCC ID: ZJU01142309

RF Exposure Info

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FCCID_2448616

Compliance Certification Services Inc. Report No: C141009R01-RPB FCC ID: ZJU01142309 Date of Issue : November 11, 2014 IC: 12373A-GT141A04D RADIO FREQUENCY EXPOSURE LIMIT According to §15.247(i) and §15.407(f), 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) of this chapter. EUT Specification EUT ATV1220A WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.15GHz ~ 5.25GHz Frequency band WLAN: 5.25GHz ~ 5.35GHz (Operating) WLAN: 5.47GHz ~ 5.725GHz WLAN: 5.725GHz ~ 5.85GHz Others Portable (<20cm separation) Device category Mobile (>20cm separation) Others Occupational/Controlled exposure (S = 5mW/cm2) Exposure classification General Population/Uncontrolled exposure (S=1mW/cm2) Single antenna Multiple antennas Antenna diversity Tx diversity Rx diversity Tx/Rx diversity 2.412-2.462GHz 802.11b mode: 17.95dBm Max. output power 802.11g mode: 13.67 dBm 802.11n HT20 MHz Channel mode: 12.69 dBm 802.11n HT40 MHz Channel mode: 12.54 dBm Antenna gain (Max) Dipole antennas for 2.4GHz Gain 2.0 dBi MPE Evaluation* Evaluation applied SAR Evaluation N/A Remark: 1. The maximum output power is 17.95dBm (62.4mW) at 2412MHz (with 2.000 numeric 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. 4. All two antennas are completely uncorrelated with each other. Page 1 / 3

Compliance Certification Services Inc. Report No: C141009R01-RPB FCC ID: ZJU01142309 Date of Issue : November 11, 2014 IC: 12373A-GT141A04D TEST RESULTS No non-compliance noted. Calculation 30 × P × G E2 Given E= & S= d 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: 30 × P × G S= 3770d 2 Changing to units of mW and cm, using: P (mW) = P (W) / 1000 and d (cm) = d(m) / 100 Yields 30 × (P / 1000) × G P×G S= = 0.0796 × Equation 1 3770 × (d / 100) 2 d2 Where d = Distance in cm P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Maximum Permissible Exposure Substituting the MPE safe distance using d = 20 cm into Equation 1: Yields S = 0.000199 × P × G Where P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Page 2 / 3

Compliance Certification Services Inc. Report No: C141009R01-RPB FCC ID: ZJU01142309 Date of Issue : November 11, 2014 IC: 12373A-GT141A04D Power Frequency Max. tune up Antenna Distance Limit Modulation Mode density band (MHz) power(dBm) gain (dBi) (cm) (mW/cm2) (mW/cm2) 802.11b 18.00 2.0 20 0.019900 1 802.11g 14.00 2.0 20 0.007922 1 2412-2462 802.11 n(20MHz) 13.00 2.0 20 0.006293 1 802.11 n(40MHz) 13.00 2.0 20 0.006293 1 Note: Only the WLAN 2.4G can transmit, the formula of calculated the MPE is: CPD1 / LPD1 < 1 CPD = Calculation power density LPD = Limit of power density WLAN 2.4G Max Power density =0.0199 < 1 (For mobile or fixed location transmitters, the maximum power density is 1.0 mW/cm2 even if the calculation indicates that the power density would be larger.) Page 3 / 3


Document Created: 2014-11-11 10:33:10
Document Modified: 2014-11-11 10:33:10
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