CERPASS TECHNOLOGY CORP. Radio Frequency Exposure LIMIT Report No.: TEFI1301045 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 UAP AC WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.150GHz ~ 5.250GHz 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 802.11b: 21.29 dBm (134.62 mW) 802.11g: 24.75 dBm (298.83 mW) 802.11n (20MHz): 24.74 dBm (297.72 mW) 802.11n (40MHz): 24.65 dBm (291.94 mW) 802.11ac(20MHz): 24.95 dBm(312.83 mW) 802.11ac(40MHz): 24.67 dBm(293.23 mW) 802.11ac(80MHz): 24.54 dBm(284.19 mW) ANT R: 6 dBi ANT M: 6 dBi ANT L: 6 dBi Directional antenna gain for N mode: 10.77 dBi MPE Evaluation*
SAR Evaluation N/A Remark:
1. The maximum output power is 24.95 dBm (312.83 mW) at 5785 MHz (with numeric 10.77 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. Tel: 886-2-2655-8100 Fax: 886-2-2655-8200 Issued date Page No. FCC ID
: Mar. 22, 2013
: 1 of 3
: SWX-UAPAC CERPASS TECHNOLOGY CORP. Report No.: TEFI1301045 TEST RESULTS No non-compliance noted. Calculation Given E 30 GP d
&
S 2E 3770 P = Power in Watts G = Numeric antenna gain d = Distance in meters S = Power density in milliwatts / square centimeter Where E = Field strength in Volts / meter Combining equations and re-arranging the terms to express the distance as a function of the remaining variables yields:
GP 30 d 3770 2 S Changing to units of mW and cm, using:
P (mW) = P (W) / 1000 and d (cm) = d(m) / 100 Yields S P
/
30 1000 d 3770 G 2 100
/
.0 0796 GP d 2 Equation 1 Where d = Distance in cm P = Power in mW G = Numeric antenna gain S = Power density in mW / cm2 Cerpass Technology Corp. Tel: 886-2-2655-8100 Fax: 886-2-2655-8200 Issued date Page No. FCC ID
: Mar. 22, 2013
: 2 of 3
: SWX-UAPAC CERPASS TECHNOLOGY CORP. Maximum Permissible Exposure Modulation Mode 802.11b 802.11g 802.11n (20MHz) 802.11n (40MHz) 802.11ac (20MHz) 802.11ac (40MHz) 802.11ac (80MHz) 802.11ac (20MHz) 802.11ac (40MHz) 802.11ac (80MHz) Frequency band (MHz) 2412-2462 2412-2462 2412-2462 2422-2452 5180-5240 5190-5260 5210 5745-5286 5755-5795 5775 Max. Conducted output power(dBm) 21.29 24.75 24.74 24.65 24.95 24.67 24.54 10.27 11.69 11.37 Report No.: TEFI1301045 Antenna gain (dBi) Distance
(cm) Power density
(mW/cm2) Limit
(mW/cm2) 10.77 10.77 10.77 10.77 10.77 10.77 10.77 10.77 10.77 10.77 20 20 20 20 20 20 20 20 20 20 0.320 0.709 0.708 0.693 0.743 0.696 0.676 0.025 0.035 0.033 1 1 1 1 1 1 1 1 1 1 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. Tel: 886-2-2655-8100 Fax: 886-2-2655-8200 Issued date Page No. FCC ID
: Mar. 22, 2013
: 3 of 3
: SWX-UAPAC