Meaning
Official guidance from the Federal Communications Commission regarding the verification of modular transmitter integrations into host devices establishes the standard for final product evaluation. Following kdb 996369 d04 is mandatory for host manufacturers who leverage modular approvals to certified products. It defines the specific testing required to ensure that the composite system complies with all radio frequency regulations after the module is installed.
This guidance targets risks such as coupling between the radio module and host digital circuitry, preventing unapproved radiation from bypassing the system integration checks.
Technical Audit
Integrators must review the original module grant to confirm that all conditions are met on the host board. This audit involves checking the antenna gain, cable lengths and trace impedance against the module’s documentation. Any deviation means that the original modular certification cannot be inherited directly.
Testing Protocol
Radiated spurious emission tests are executed to verify that the host cabinet and wiring do not generate unwanted signals. This test is performed with the module operating in different transmit modes. It focuses on the harmonic frequencies of both the host clock and the radio.
Filing Strategy
Results from these tests must be archived by the manufacturer and made available upon regulatory request. The document details when a permissive change is required or when a new application is necessary. It prevents unauthorized hardware from reaching the market.