Specifications

ETSI
Final draft ETSI EN 300 328 V1.8.1 (2012
-
04)
73
C.4.2 Guidance for testing Adaptivity (Channel Access
Mechanism)
This clause provides guidance on how the Adaptivity (see clauses 4.3.1.6 or 4.3.2.5) and the Receiver Blocking
(clauses 4.3.1.1 or 4.3.2.10) requirements can be verified on integral antenna equipment using radiated measurements.
C.4.2.1 Measurement Set-up
Figure C.2 describes an example of a set-up that can be used to perform radiated adaptivity and receiver blocking tests.
Figure C.2: Measurement Set-up
C.4.2.2 Calibration of the measurement Set-up
Before starting the actual measurement, the setup shall be calibrated. Figure C.3 shows an example of a set-up that can
be used for calibrating the set-up given in figure C.2 using a substitution antenna and a spectrum analyser. It shall be
verified that the levels of the interference and blocking signal at input of the substitution antenna correspond with the
levels used for conductive measurements assuming a 0 dBi antenna gain for the UUT (see clause 5.3.7).
NOTE: For test sites with a fixed setup of the measurement antenna(es) and a reproducible positioning of the
UUT, correction values from a verified site calibration can be used alternatively.
Figure C.3: Measurement Set-up - Calibration