Meaning
Harmonized standards establish the technical requirements for broadband radio access networks operating in the 5 GHz band. Adherence to etsi en 301 893 is mandatory for any manufacturer seeking to place high performance wireless equipment on the European market. The document covers transmission power, spectral density, frequency stability and the behavior of devices when they detect radar signals.
It applies to both indoor and outdoor installations using orthogonal frequency division multiplexing.
Dynamic Selection
Devices must monitor their operating frequency for pulses that indicate the presence of weather or military radar. Under etsi en 301 893, a radio must vacate the channel immediately upon detection. This mechanism is known as dynamic frequency selection and prevents interference with critical infrastructure.
The radio stays off that channel for a set period.
Test Case
Engineers verify these behaviors by injecting simulated radar patterns into the receiver port. During etsi en 301 893 testing, the software must show it can detect several different pulse widths and repetition rates. A failure to move to a different channel within the required time window results in a rejected filing.
Spectral Requirement
Transmitters are limited in how much energy they can leak into adjacent bands. The etsi en 301 893 standard defines a strict mask that the signal must fit within. Measurements are taken at the peak of the modulation.