Class A And Class B Ratings - Compaq AlphaServer DS20E Reference Manual

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Appendix A
Regulatory and Safety Notices
This appendix contains regulatory compliance notices for this computer system.
A.1 Class A and Class B Ratings
Part 15 of the Federal Communications Commission (FCC) Rules and
Regulations has established Radio Frequency (RF) emission limits to provide an
interference-free radio frequency spectrum. Many electronic devices, including
computers, generate RF energy incidental to their intended function and are,
therefore, covered by these rules. These rules place computers and related
peripheral devices into two classes, A and B, depending upon their intended
installation. Class A devices are those that may reasonably be expected to be
installed in a business or commercial environment. Class B devices are those
that may reasonably be expected to be installed in a residential environment.
The FCC requires devices in both classes to bear a label indicating the
interference potential of the device as well as additional operating instructions
for the user.
The rating label on the device shows which class (A or B) the equipment falls
into. Class B devices have a FCC logo or FCC ID on the label. Class A devices do
not have a FCC logo or ID on the label. Once the class of the device is
determined, refer to the corresponding statements in the sections that follow.
Regulatory and Safety Notices A-1