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RF Exposure

Dongguan Yexun Electronic Technology Co,Ltd YXDZ-007 BATTERY POWERED BLUETOOTH SPEAKER 2BB48YXDZ-007 2BB48YXDZ007 yxdz 007

Dongguan Yexun Electronic Technology Co,Ltd YXDZ-007 2BB48YXDZ-007 2BB48YXDZ007 yxdz 007

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Document DEVICE REPORTGetApplicationAttachment.html?id=6704040
Page 1 of 2

Report No.: FCS202307132W01

FCC RF Exposure
EUT Description:BATTERY POWERED BLUETOOTH SPEAKER ModelNo.:YXDZ-007 FCC ID: 2BB48YXDZ-007 Equipment type: mobile device equipment
Test procedures according to the technical standards: KDB 447498 D01 V06 andFCC 2.1091.
1. Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b)
Limits for Maximum Permissible Exposure (MPE)

F = frequency in MHz Formula: Pd = (Pout*G)/(4**r2) Where : Pd = power density in mW/cm2, Pout = output power to antenna in mW; G = gain of antenna in linear scale, = 3.14; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2. If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. 2. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and
Flux Compliance Service Laboratory
Room 105 Floor Bao hao Technology Building 1 NO.15 Gong ye West Road Hi-Tech Industrial, Song shan lake Dongguan Tel: 769-27280901 Fax:769-27280901 http://www.FCS-lab.com

Page 2 of 2

Report No.: FCS202307132W01

highest channel individually.

3. Test Result of RF Exposure Evaluation

BT Modulation
GFSK

Conduct Max

Channel ed power tune-up

Freq.

(dBm) power

(MHz)

(mW)

2402 2441
2480

3.79 2.393 3.62 2.301
3.73 2.360

Antenna Gain (dBi)
-0.68 -0.68 -0.68

Antenna gain numeric
0.855 0.855 0.855

Evaluation result
(mW/cm2 )
0.00040724 0.00039159 0.00040163

Power
density
Limits
(mW/cm2) 1 1 1

BLE

EIRP=EMeas+20log(dmeas)-104.7

EIRP

is the equivalent isotropically radiated power,

EMeas

in dBmis the field strength of the emission at the measurement distance, in dB u V/m

dMeas

is the measurement distance, in m

Field

EIRP(dBm) Max

Frequency(MHz) Min.

Calc.

limit

strength(dBuV/m)

tune-up(mW)

distance(mm) thresholds

89.61

-5.59

0.2760

2402

5

0.08555

3.0

88.53 90.66

-6.67 -4.54

0.2152 0.3515

2440 2480

5

0.06723

3.0

5

0.11070

3.0

BTConclusion: the max result : 0.00040724 1.0 compliance with FCC's RF Exposure. Note:Single PCB antenna has no dual simultaneous function

Flux Compliance Service Laboratory Room 105 Floor Bao hao Technology Building 1 NO.15 Gong ye West Road Hi-Tech Industrial, Song shan lake Dongguan Tel: 769-27280901 Fax:769-27280901 http://www.FCS-lab.com



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