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Edit: ANCI 2021-12-30 731
If 2.4GHZ wireless products want to be sold in the North American market, they need to apply for FCC ID. Common products are: wireless mouse, wireless keyboard, etc. Due to factors such as product classification and application technology, the certification tests for different products are also Different, today we mainly learn about the content of the FCC certification certification requirements and test standard analysis for this product.
FCC certification standard:
FCC PART 15.207 Conducted limits
FCC PART 15.209 Radiated emission limits
FCC PART 15.215 Additional provisions to the general radiated emission limitations
FCC PART 15.247 Operation within the bands 902–928 MHz, 2400–2483.5 MHz, and 5725–5850 MHz
FCC PART 15.249 Operation within the bands 902–928 MHz, 2400–2483.5 MHz,5725–5875 MHZ, and 24.0–24.25 GHz
FCC certification test requirements:
The FCC PART 15 specification specifies the test requirements for products whose operating frequency is within the frequency range of 2.4-2.4835Ghz; the main reference standards are 15.247 and 15.249 (the two are in a parallel relationship, and for small power equipment can use 15.249),
Test Standard Basis |
test |
judgement standard |
Modulation |
Remark |
||
FCC Part15.207 |
Conducted |
Frequency of emission (MHz) |
Conducted limit (dBμV) |
ALL |
Devices powered only by batteries or not powered by AC do not need to be tested |
|
|
Quasipeak |
Average |
||||
0.15–0.5 |
66 to 56* |
56 to 46* |
||||
0.5–5 |
56 |
46 |
||||
5–30 |
60 |
50 |
||||
FCCPart15.247 (a)(1) |
Hopping |
25KHz |
frequency hopping system |
The two limit standards choose the higher frequency and the higher frequency |
||
or 20dB bandwidth with 2/3 frequency hopping |
||||||
FCC Part 15.247(a)(1) (iii) |
|
at least 15 channels |
Frequency Hopping System / Digital Modulation |
|
||
Dwell |
Within the period of each carrier frequency (number of frequency hopping channels multiplied by 0.4 seconds), the average occupied time of any frequency shall not exceed 0.4 seconds |
|
||||
FCC Part15.247(b)(1) |
maximum |
0.125 watts |
|
|
||
FCC Part15.247(b)(3) |
output |
1 watt |
digital modulation |
Also refer to Test Maximum Conducted Output Power Conducted Output Power |
||
FCC Part15.247(a)(2) |
Minimum |
At least 500KHz |
digital modulation |
|
||
FCC Part15.215© |
20 dB |
Unlimited value requirement |
frequency hopping system |
|
||
FCC Part15.247(d) |
edge |
At least below 20dB |
Spread Spectrum/Digital Modulation |
|
||
Or: less than 54dBuV (AV), less than 74dBuV (PEAK), |
|
|||||
FCC Part15.247(e) |
power spectral |
≤8dBm @ 3KHz |
digital modulation system |
|
||
FCC Part15.247(f) |
average |
The combined system of frequency hopping operation cannot exceed 0.4 seconds in the period calculated in seconds (equal to the number of frequency hopping channels multiplied by 0.4 seconds) when the direct sequence or digital modulation operation is turned off. Should meet the power density required by FCC Part 15.247(d) |
Hybrid system combining frequency hopping and digital modulation techniques |
|
||
Hybrid systems operating with digital modulation should meet the power density required by FCC Part 15.247(d) with frequency hopping turned off |
||||||
FCC Part15.209 |
Radiation |
Frequency (MHz) |
Limit (microvolts/meter) |
Measuring distance (meters) |
ALL |
Frequency below 1G is the QP limit |
0.009–0.49 |
2400/F(kHz) |
300 |
||||
0.490–1.705 |
24000/F(kHz) |
30 |
||||
1.705–30.0 |
30 |
30 |
||||
30–88 |
100 |
3 |
||||
88–216 |
150 |
3 |
||||
216–960 |
200 |
3 |
||||
Above 960 |
500 |
3 |
||||
FCC Part15.249(a) |
Radiated |
Fundamental field strength |
Harmonic field strength (microvolts/meter) |
ALL |
This limit is the limit of AV value, PK value plus 20dB on this basis |
|
(millivolts/meter) |
||||||
50 |
500 |
See the table below for details:
ANCI Reminder
Of course, there are some other parameters such as antenna gain, antenna technical requirements, maximum power, antenna type, etc. that need to be understood in FCC certification. There are various types of 2.4G wireless products currently sold in the North American market, but the FCC test specifications they follow are unified, so the FCC certification of 2.4GHZ wireless products can be carried out according to the requirements of the above table. For specific details, please consult ANCI testing.
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