Meaning
Verification process performed when a pre-certified radio module is installed into a new final product to ensure the assembly still meets wireless standards. A host integration retest checks whether the enclosure, cables or other components have degraded the radio performance or increased unwanted emissions. This step is mandatory for manufacturers who want to leverage the modular approvals of their suppliers.
Spurious Emission
Radiated testing confirms that the digital circuitry of the host device does not interfere with the radio frequency performance. Even if the module is perfect, the layout of the host board can create noise that violates local laws. Lab technicians measure the emissions across a wide frequency range.
Host integration retest identifies these issues before a product is shipped to customers.
Antenna Matching
Gain and radiation patterns often change when the module is placed in a tight housing near metal parts. The test evaluates the shift in performance caused by these environmental factors. Failure to maintain the original parameters can invalidate the module certification.
Approval Gate
Final clearance from authorities like the FCC or CE depends on the successful completion of this sequence. It provides the legal basis for placing the product on the market.
