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2.4GHZ wireless product FCC certification test project interpretation

Edit: ANCI 2021-12-30 339

Article overview: 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, different products are also tested for certification Different, today we mainly learn about the content of the FCC certification certification requirements and test standard analysis for this product.

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 project	judgement standard			Modulation	Remark
FCC Part15.207	Conducted disturbance	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 interval	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)	Number of channels to hop	at least 15 channels			Frequency Hopping System / Digital Modulation
	Dwell time	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 conduction	0.125 watts
FCC Part15.247(b)(3)	output power	1 watt			digital modulation	Also refer to Test Maximum Conducted Output Power Conducted Output Power
FCC Part15.247(a)(2)	Minimum 6dB bandwidth	At least 500KHz			digital modulation
FCC Part15.215©	20 dB bandwidth	Unlimited value requirement			frequency hopping system
FCC Part15.247(d)	edge bandwidth	At least below 20dB			Spread Spectrum/Digital Modulation
		Or: less than 54dBuV (AV), less than 74dBuV (PEAK),
FCC Part15.247(e)	power spectral density	≤8dBm @ 3KHz			digital modulation system
FCC Part15.247(f)	average occupancy time	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 harassment	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 field strength	Fundamental field strength	Harmonic field strength (microvolts/meter)	ALL		This limit is the limit of AV value, PK value plus 20dB on this basis can refer to FCC PART15.35
		(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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