FCC (Federal Communications Commission)
The FCC an independent agency of the U.S. government established in 1934. The FCC by controlling radio wide
Broadcasting, television, telecommunications, satellite and cable coordinate national and international communications. Many radios should
the FCC approval is required for applications, communications and digital products to enter the U.S. market
——The FCC certification. The FCC commission investigates and studies all phases of product safety to find solutions
The FCC also includes the detection of radio devices, aircraft and so on

FCC wired product testing content, FCC VoC

The FCC regulates only electromagnetic interference. Electromagnetic Interference is divided into two types

The following ways:

1. Conduction interference

propagates through power lines, signal lines, and other conductors, and the FCC requires frequencies from 150Khz to
At 30Mhz, the interference at low frequency is mostly conducted interference.

2. Radiation Emission

Spread through space. From 30Mhz to 1Ghz, most of the interference at high frequency is radiation interference.
Usually, both kinds of interference can coexist.

3. Antenna disturbance.
This applies to devices with external antennas. Such as TV.
Common FCC certification test content

FCC only controls electromagnetic interference, which is mainly divided into the following ways:
1. Radiation Emission propagates through space. From 30Mhz to 1Ghz, most of the interference at high frequency is radiation interference. Usually, both kinds of interference can coexist.
2.Conduction Emission spreads through the power line, signal line and other conductors. FCC requires frequency from 150Khz to 30Mhz, and the interference at low frequency is mostly Conduction interference. Mainly for electronic products connected to the power grid.
3. antenna end harassment. This applies to devices with external antennas, such as TVS. FCC certification testing standards: FCC PART 15, FCC PART 18.

FCC certification test program

Radiation emission; Conduction emission; Harmonic current; Twinkle; Frequency error; Adjacent channel power; Scattered; Conducted carrier power; Effective transmitted power; The loudness of the transmitter to the modulated frequency; The range of modulation band of broadband equipment; Frequency stability under low voltage conditions
FCC verification method -1

According to the relevant section of the Federal Communications Regulation (CFR 47), all electronic products entering the United States
(All frequencies over 126KHZ shall be supervised, and wired frequencies over 9KHZ) shall be electromagnetic compatible
Certification (except for products specified in some relevant provisions), among which there are three more common certification methods:

1. Self-verification
：
The manufacturer or importer ensures that the necessary tests are carried out to confirm that the product complies with relevant technical standards and to retain inspection
The FCC has the authority to require manufacturers to submit test data for equipment samples or products. Suitable for self - validation equipment package
This includes commercial computers, receivers for TV and FM, and industrial, scientific and medical devices used by non-mass consumers of FCC Rule Part18.

FCC verification method -2

2. DeclarationofConformity (DOC)
The responsible party for the equipment (typically the manufacturer or importer) tests the product at an FCC-designated qualified testing facility to ensure that the equipment conforms to phase
The FCC reserves the right to require the responsible party to submit test data for samples of equipment or products.
Only accredited laboratories are accredited by A2LA or NVLAP (National Laboratory Accreditation System)
Able to issue such reports and DOC declarations. So manufacturers can put FCC marks on their products and sell them in the United States. Main products: IT products,
PC and PC peripherals. Certification period: 1-2 weeks

3. The ID authentication

FCC will review the samples (or photos) and test data submitted by the applicant, If the device complies with FCC rules, authorize an FCCID number for the device . Equipment suitable for certification includes low power transmitters such as cordless phones, remote controls for automatic doors, and wireless electric remote control toys
And safety alarm systems, Part15 devices that intentionally emit radio frequency energy, Part18 industrial,
Scientific and medical equipment, automatic frequency conversion receivers and ultra-regenerative receivers, television interface equipment, and home computers and their peripherals.

The certification methods and procedures for the above three products are quite different, and the optional certification methods for different products are stipulated in the FCC. The degree of rigor of its certification is increasing. For these three types of certification, the FCC Commission also has relevant requirements for each laboratory.

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