Meaning
Administrative guidance published by the Federal Communications Commission that provides specific procedures for evaluating human exposure to radiofrequency radiation defines the standard for RF evaluation. Utilizing kdb 447498 d04 is required to determine whether a transmitter qualifies for an exemption from routine SAR evaluation. It applies to mobile and portable devices operating in close proximity to the human body.
The document outlines mathematical formulas to calculate threshold power levels below which a device is deemed safe without laboratory SAR testing, simplifying the approval process for low power wireless accessories.
Evaluation Threshold
Exemption limits are calculated based on the separation distance between the radiating element and the user. This distance ranges from a few millimeters to twenty centimeters. The allowed power decreases as the device moves closer to the body.
Exemption Calculation
Formulae use the operating frequency and the minimum separation distance to yield a power limit in milliwatts. If the maximum conducted or radiated power exceeds this limit, full testing must be performed. This calculation saves time and expense when the transmitter operates on very low power.
Assessment Process
Test reports must detail how the separation distance and power levels were determined. The findings are reviewed by a telecommunication certification body before the final grant is issued. This review ensures that the consumer exposure guidelines are satisfied.
