Any electrical or electronic devices incorporating a digital circuitry operating with an oscillator or clock speed greater than 9kHz requires approval to this rule. Contains two Classes, A and B.
Class A digital device: A digital device that is marketed for use in a commercial, industrial or business environment. Class B digital device: A digital device that is marketed for us in a residential environment notwithstanding use in commercial, business and industrial environments.
FCC Part 18: Applies to industrial, scientific, medical and domestic products that generate RF energy to perform work. Examples are devices such as a Microwave Oven or an Ultrasonic Cleaner, etc.
This document lays down technical limits and operational details for various devices and generally requires measurement methods in accordance with ANSIC63.4. However, for some types of digital devices a declaration of conformity to CISPR22 is acceptable.
Austest's EMC facilities are listed with the FCC for performing tests in accordance with part 15 and 18.
Note the FCC does not mandate immunity testing.