March 14, 2002 (revised 2/13/2002) 1 Version of CISPR 22 used in the United States by the FCC William S. Hurst Office of Engineering and Technology Federal Communications Commission

March 14, 2002 (revised 2/13/2002) 2 Radiated Emissions Section (g) “Digital devices may be shown to comply with the standards contained in the Third Edition of CISPR Pub 22 (1997), “Information Technology Equipment – Radio Disturbance Characteristics – Limits and Methods of Measurement”

March 14, 2002 (revised 2/13/2002) 3 Radiated Emissions Test Procedure C or 2000* FCC Limits above 1 GHz apply continue to apply to digital devices If the CISPR limits are used for radiated emissions then the CISPR limits for conducted emissions also apply.

March 14, 2002 (revised 2/13/2002) 4 Conducted Emissions Section (e) “Digital devices may be shown to comply with the standards contained in the Third Edition of CISPR Pub 22 (1997), “Information Technology Equipment – Radio Disturbance Characteristics – Limits and Methods of Measurement”

March 14, 2002 (revised 2/13/2002) 5 Conducted Emissions Test Procedure C or 2000* If the CISPR limits are used for conducted emissions then the CISPR limits for radiated emissions also apply. Docket is considering a proposal to harmonize the FCC limits for conducted emissions with the CISPR 22 conducted emission limits.

March 14, 2002 (revised 2/13/2002) 6 Verification (Self-approval) Verification (Self-approval) Certification (Approved by FCC or TCB) Certification (Approved by FCC or TCB) Declaration of Conformity (Self-approval using an accredited lab) Declaration of Conformity (Self-approval using an accredited lab) Equipment Authorization Program The type of approval is specified in the rules for the particular type of device Minimum Maximum

March 14, 2002 (revised 2/13/2002) 7 Conformity Assessment for Digital Devices Option to use either Declaration of Conformity or Certification by a TCB for these devices: Class B personal computers and peripherals CPU boards and internal power supplies used with Class B personal computers:

March 14, 2002 (revised 2/13/2002) 8 Conformity Assessment for Digital Devices Only Declaration of Conformity is used for these devices: Class B personal computers assembled using authorized CPU boards or power supplies.

March 14, 2002 (revised 2/13/2002) 9 Conformity Assessment for Digital Devices Verification is used for these devices: (15.101) Class B external switching power supplies Other Class B digital devices and peripherals Class A digital devices, peripherals and external switching power supplies