TEST REPORT
BLUE ASIA
Product Information
Product Name: Wireless Gaming Headphones
Brand Mark: MONSTER®
Model No.: Monster Airmars XKT08 Pro
FCC ID: 2A8PV-QSMT08P
Report Number: BLA-EMC-202304-A5203
Date of Sample Receipt: 2023/4/17
Date of Test: 2023/4/17 to 2023/4/21
Date of Issue: 2023/4/23
Test Standard: 47 CFR Part 15, Part1.1307, 47 CFR Part 15, Part2.1093, KDB447498D04 General RF Exposure Guidance v01
Test Result: Pass
Prepared For
Shenzhen Information Infinity Co., Ltd.
Block b,CleanSunshine Garden,15Keji Second Road Songpingshan community, XiliStreet,Nanshan Distric,Shenzhen
Prepared By
BlueAsia of Technical Services(Shenzhen) Co.,Ltd.
Building C, No. 107, Shihuan Road, Shiyan Sub-District, Baoan District, Shenzhen, Guangdong Province, China
TEL: +86-755-23059481
Report Revise Record
| Version No. | Date | Description |
|---|---|---|
| 00 | 2023/4/23 | Original |
Test Summary
| Test Item | Test Requirement | Test Method | Class/Severity | Result |
|---|---|---|---|---|
| RF Exposure | 47 CFR Part 1.1307, Part 2.1093, KDB 447498 | CFR 47 Part 2.1093 | CFR 47 Part 2.1093 | PASS |
General Information
| Applicant | Shenzhen Information Infinity Co., Ltd. |
|---|---|
| Address | Block b,CleanSunshine Garden,15Keji Second Road Songpingshan community, XiliStreet,Nanshan Distric,Shenzhen |
| Manufacturer | Shenzhen Information Infinity Co., Ltd. |
| Address | Block b,CleanSunshine Garden,15Keji Second Road Songpingshan community, XiliStreet,Nanshan Distric,Shenzhen |
| Factory | Shenzhen Information Infinity Co., Ltd. |
| Address | Block b,CleanSunshine Garden,15Keji Second Road Songpingshan community, XiliStreet,Nanshan Distric, Shenzhen |
| Product Name | Wireless Gaming Headphones |
| Test Model No. | Monster Airmars XKT08 Pro |
General Description of E.U.T.
| Hardware Version | BSX-J208-V1.2 |
|---|---|
| Software Version | V56 |
| Operation Frequency | 2402MHz-2480MHz |
| Modulation Type | GFSK,pi/4DQPSK |
| Channel Spacing | 1MHz |
| Number of Channels | 79 |
| Antenna Type | Chip Antenna |
| Antenna Gain | 3.0 dBi(Provided by the customer) |
Laboratory Location
All tests were performed at:
BlueAsia of Technical Services(Shenzhen) Co.,Ltd.
Building C, No. 107, Shihuan Road, Shiyan Sub-District, Baoan District, Shenzhen, Guangdong Province, China
Telephone: TEL: +86-755-28682673 FAX: +86-755-28682673
No tests were sub-contracted.
RF Exposure Compliance Requirement
Standard Requirement
According to 447498 D04 Interim General RF Exposure Guidance v01
Standalone SAR test exclusion considerations
Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Exclusion Threshold condition, listed below, is satisfied.
Limits
The following formulas define the power thresholds (Pth) for RF exposure compliance:
Pth (mW) = [ERP20 cm(d/20 cm)* d ≤ 20 cm] / [ERP20 cm 20 cm < d ≤ 40 cm] (B.2)
where:
x = -log10(60 / ERP20cm)
and f is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1).
Example values shown in Table B.2 are for illustration only.
| Frequency (MHz) | Distance (mm) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
| 300 | 39 | 65 | 88 | 110 | 129 | 148 | 166 | 184 | 201 | 217 |
| 450 | 22 | 44 | 67 | 89 | 112 | 135 | 158 | 180 | 203 | 226 |
| 835 | 9 | 25 | 44 | 66 | 90 | 116 | 145 | 175 | 207 | 240 |
| 1900 | 3 | 12 | 26 | 44 | 66 | 92 | 122 | 157 | 195 | 236 |
| 2450 | 3 | 10 | 22 | 38 | 59 | 83 | 111 | 143 | 179 | 219 |
| 3600 | 2 | 8 | 18 | 32 | 49 | 71 | 96 | 125 | 158 | 195 |
| 5800 | 1 | 6 | 14 | 25 | 40 | 58 | 80 | 106 | 136 | 169 |
Pth (mW) = ERP20 cm (mW) = [2040f 0.3 GHz ≤ f < 1.5 GHz] / [3060 1.5 GHz ≤ f ≤ 6 GHz] (B.1)
Calculation Details
EIRP = pt×gt = (E×d)²/30
where:
pt = transmitter output power in watts,
gt = numeric gain of the transmitting antenna (unitless),
E = electric field strength in V/m, --- 10^((dBuV/m)/20)/10^6
d = measurement distance in meters (m)---3m
Sopt = (E×d)²/30 × gt
Ant gain = 3 dBi
Max Output power = -1.291dBm @EDR@ 2402MHz
ERP = -1.291dBm+3dBi-2.15=-0.441dBm
worse case:
10^-0.0441=0.903mW < 2.79 mW
Comply with RF exposure exemption limit.
The test report is effective only with both signature and specialized stamp. The result(s) shown in this report refer only to the sample(s) tested. Without written approval of BlueAsia, this report can't be reproduced except in full.
