1 Frequency changers or generators, other than those specified by Dual-Use code 0B001.b.13. or 3A225, having all of the following characteristics, and specially designed components and software therefor— a multiphase output capable of providing a power of 40 W or greater; b capable of operating in the frequency range between 600 and 2 000 Hz; and c frequency control better (less) than 0.1 %. 2 In this paragraph, “ frequency changers ” includes converters, inverters, generators, electronic test equipment, AC power supplies, variable speed motor drives or variable frequency drives. 3 The functionality specified in this paragraph may be met by certain equipment marketed as electronic test equipment, AC power supplies, variable speed motor drives or variable frequency drives.