RF Test Report
Product Information
Product Name: ACHERON 87-Key Themed Mechanical Keyboard
Model Name: V87-
FCC ID: 2BE9P-V87A
Trademark: ATK
Issuing Parties
Issued For: Shenzhen Yizhita Technology Co., Ltd
Address: Room 1901, Qianhai HOP Int'l, No. 19 Xinghua 1st Rd (Extension), Bao'an District, Shenzhen, Guangdong, China.
Issued By: Shenzhen LGT Test Service Co., Ltd.
Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China
Test Details
Report Number: LGT24K109HA01
Sample Received Date: Nov. 19, 2024
Date of Test: Nov. 19, 2024 ~ Dec. 05, 2024
Date of Issue: Dec. 05, 2024
Test Report Certification
Applicant: Shenzhen Yizhita Technology Co., Ltd
Address: Room 1901, Qianhai HOP Int'l, No. 19 Xinghua 1st Rd (Extension), Bao'an District, Shenzhen, Guangdong, China.
Manufacture: Shenzhen Yizhita Technology Co., Ltd
Address: Room 1901, Qianhai HOP Int'l, No. 19 Xinghua 1st Rd (Extension), Bao'an District, Shenzhen, Guangdong, China.
Product Name: ACHERON 87-Key Themed Mechanical Keyboard
Trademark: ATK
Model Name: V87-
Sample Status: Normal
Applicable Standards
| STANDARD | TEST RESULTS |
|---|---|
| FCC 47 CFR §2.1093 KDB 447498 D01 General RF Exposure Guidance v06 |
PASS |
Revision History
| Rev. | Issue Date | Revisions |
|---|---|---|
| 00 | Dec. 05, 2024 | Initial Issue |
General Information
1.1 General Description of the EUT
| Product Name: | ACHERON 87-Key Themed Mechanical Keyboard |
| Trademark: | ATK |
| Model Name: | V87- |
| Series Model: | N/A |
| Model Difference: | N/A |
| Frequency Bands: | Bluetooth: 2402-2480MHz 2.4G: 2402-2480MHz |
| Rating: | Input: DC 5V 0.5A |
| Battery: | Capacity: 8000mAh Rated Voltage:3.7V |
| Hardware Version: | N/A |
| Software Version: | N/A |
1.2 Test Laboratory
| Company Name: | Shenzhen LGT Test Service Co., Ltd. |
| Address: | Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China |
| Accreditation Certificate: | A2LA Certificate No.: 6727.01 FCC Registration No.: 746540 CAB ID: CN0136 |
2. FCC 47CFR §2.1093 REQUIREMENT
2.1 Test Standards
The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached.
Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range.
2.2 Limit
Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Tables:
| MHz | 5 | 10 | 15 | 20 | 25 | mm |
|---|---|---|---|---|---|---|
| 150 | 39 | 77 | 116 | 155 | 194 | |
| 300 | 27 | 55 | 82 | 110 | 137 | |
| 450 | 22 | 45 | 67 | 89 | 112 | |
| 835 | 16 | 33 | 49 | 66 | 82 | |
| 900 | 16 | 32 | 47 | 63 | 79 | |
| 1500 | 12 | 24 | 37 | 49 | 61 | SAR Test Exclusion Threshold (mW) |
| 1900 | 11 | 22 | 33 | 44 | 54 | |
| 2450 | 10 | 19 | 29 | 38 | 48 | |
| 3600 | 8 | 16 | 24 | 32 | 40 | |
| 5200 | 7 | 13 | 20 | 26 | 33 | |
| 5400 | 6 | 13 | 19 | 26 | 32 | |
| 5800 | 6 | 12 | 19 | 25 | 31 |
| MHz | 30 | 35 | 40 | 45 | 50 | mm |
|---|---|---|---|---|---|---|
| 150 | 232 | 271 | 310 | 349 | 387 | |
| 300 | 164 | 192 | 219 | 246 | 274 | |
| 450 | 134 | 157 | 179 | 201 | 224 | |
| 835 | 98 | 115 | 131 | 148 | 164 | |
| 900 | 95 | 111 | 126 | 142 | 158 | |
| 1500 | 73 | 86 | 98 | 110 | 122 | SAR Test Exclusion Threshold (mW) |
| 1900 | 65 | 76 | 87 | 98 | 109 | |
| 2450 | 57 | 67 | 77 | 86 | 96 | |
| 3600 | 47 | 55 | 63 | 71 | 79 | |
| 5200 | 39 | 46 | 53 | 59 | 66 | |
| 5400 | 39 | 45 | 52 | 58 | 65 | |
| 5800 | 37 | 44 | 50 | 56 | 62 |
The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by:
[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] • [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,where f(GHz) is the RF channel transmit frequency in GHz.
Power and distance are rounded to the nearest mW and mm before calculation.
The result is rounded to one decimal place for comparison.
The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion.
2.3 Test Result
Turn up Result
| Mode | Turn up Power |
|---|---|
| BLE-GFSK | 0±1dBm |
| 2.4G | -3±1dBm |
Note: The 2.4G maximum Equivalent Isotropic Radiated Power : 92.86dBuV/m-95.3=-2.44dBm (refer to C63.10, section 10.3.9)
The MPE result of worst mode:
| RF Function | Frequency (MHz) | Max Turn up Power (dBm) | Max Turn up Power (mW) | Estimated SAR | Limit | Ratio | Result |
|---|---|---|---|---|---|---|---|
| BLE | 2402 | 1.00 | 1.26 | 0.390 | 3 | 0.103 | Pass |
| 2.4G | 2402 | -2.00 | 0.63 | 0.196 | 3 | 0.065 | Pass |
Note:
- The Maximum Power Density is less than the limit, complies with the exemption requirements.
Appendix I - Photographs of EUT Constructional Details
Note: Please see the attached V87_EUT Photos.
※※※※※ END OF THE REPORT ※ ※ ※ ※※
