FCC認證Part15 B標準中B代表的意思

準確的說 FCC認證 Part 15 B應該是FCC Part 15 Class B（B級數(shù)字裝置）。

Class A和Class B的定義：

Class A digital device－A級數(shù)字裝置

A digital device that is marketed for use in a commercial, industrial or business

Environment, exclusive of a device which is marketed for use by the general public

or is intended to be used in the home.投放市場供在商業(yè)、工業(yè)或商務環(huán)境中使用的數(shù)字裝置，但不包括投放市場供一般公眾或家庭使用的裝置。

Class B digital device－B級數(shù)字裝置

Class B digital device. A digital device that is marketed for use in a residential

environment notwithstanding use in commercial, business and industrial

environments. Examples of such devices include, but are not limited to, personal

computers, calculators, and similar electronic devices that are marketed for use by

the general public. Note: The responsible party may also qualify a device intended

to be marketed in a commercial, business or industrial environment as a Class B

device, and in fact is encouraged to do so, provided the device complies with the

technical specifications for a Class B digital device. In the event that a particular

type of device has been found to repeatedly cause harmful interference to radio

communications, the Commission may classify such a digital device as a Class B

digital device, regardless of its intended use。

下面是FCC 認證PART 15測試內容：

Subpart A – General（一般要求）

Subpart B - Unintentional Radiators（無意輻射體）

Subpart C - Intentional Radiators（有意輻射體）

Subpart D - Unlicensed Personal Communications Service Devices

Subpart E - Unlicensed National Information Infrastructure Devices

Subpart F – Ultra-Wideband Operation

Subpart G – Access Broadband Over Power Line (Access BPL)

投放市場不僅供在商業(yè)、工業(yè)或商務環(huán)境中使用而且要在居住環(huán)境中使用的數(shù)字裝置。這類裝置的例子包括（但不限于）：個人計算機、計算器以及其它投放市場供一般公眾使用的類似電子裝置。注：職責部門也可以把投放市場以供商業(yè)、工業(yè)或商務環(huán)境中使用的裝置定義為B級裝置；事實上美國FCC認證也鼓勵這一舉措，只要該裝置能滿足B級裝置的技術規(guī)范。若某類型裝置反復地對無線電通訊產生有害干擾，則FCC認證可能會將之歸為B級數(shù)字裝置而不管其用途如何。