F.13 Pre-scan

37.145-23GPPActive Antenna System (AAS) Base Station (BS) conformance testingPart 2: radiated conformance testingRelease 17TS

Pre-scan is used to identify frequencies with unwanted emission power levels above a certain threshold. The pre-scan does not provide an estimate of TRP. An emission frequency identified by a pre-scan may be further investigated by any of the TRP measurement methods in this annex.

The procedure for pre-scan is as follows:

1. Scan the entire surface around EUT.

2. Rotate test antenna to cover all possible polarisations of emissions to detect maximum emissions.

3. Record the list of frequencies and corresponding unwanted emission power levels, EUT spatial positions, and test antenna polarization for which the maximum emission levels occur.

4. Emissions which are 20 dB or more below the specified limit shall not require further measurements.

Annex G (normative):
Environmental requirements for the BS equipment