FCC Acceptance of CISPR 22 Data

The FCC accepts measurement data for unintentional unlicensed Part 15 devices using CISPR 22 1997 standard. However, most manufacturers and some test laboratories believe that the FCC accepts measurement data based on any CISPR 22 standard, regardless of the year. In fact, 47CFR 15.38(a) lists only the third edition of the International Special Committee on Radio Interference (CISPR), Pub. 22, “Information Technology Equipment—Radio Disturbance Characteristics—Limits and Methods of Measurement,” 1997, IBR approved for §15.109. The FCC accepts data based only on this CISPR edition. For any other edition or year to be acceptable, it would have to be included in the list in 47CFR 15.38(a), or included in a policy from the FCC, as described here in FCC 47CFR 15.38(a) “Incorporation by reference” rule: “The materials listed in this section are incorporated by reference in this part. These incorporations by reference were approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. These materials are incorporated as they exist on the date of the approval, and notice of any change in these materials will be published in the Federal Register."

We have no knowledge of FCC dismissals as a result of using other CISPR 22 standard versions and dates; nonetheless, FCC 47CFR15.38(a) lists CISPR 22 1997 standard as the only alternative standard for Part 15 device measurement data.

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