The measurements for the Transmitter
unwanted emission in the spurious domain are performed at normal environmental
conditions only. The level of spurious emissions are measured as, either:
- Their power in a specified load
(conducted spurious emissions) and their effective radiated power when radiated by
the cabinet or structure of the equipment (cabinet radiation); or
- Their effective radiated power when
radiated by cabinet and antenna in case of integral antenna equipment with no
antenna connectors.
The measurement is performed at the lowest
and the highest channel on which the equipment can operate. The test results comply with
the limits shown in the Limits on Transmitter Unwanted Emissions in Spurious Domain -
Non-FHSS table of CE Regulations for SRDs Operating in License-Free 2.4 GHz/5 GHz
Bands [1] and are recorded in the test report. The measurements for this test
are radiated and are carried out in an anechoic chamber. The test procedure for radiated
measurements of Transmitter unwanted emission in the spurious domain is described in the
following steps:
- For test setup, see Annex-B of EN 300
328 [3].
- Use Spectrum Analyzer as measuring
equipment.
- Switch ON the EUT and other test
equipment.
- For detailed test procedure, see
clause 5.4.9.2.1 of EN 300 328 [3].
- Use the Radio Testing Tool [9] to setup and configure the EUT. For setting and up configuring
the EUT, see the Radio Testing Tool User's Guide [10].
- Open the Radio Testing Tool [9] and setup the link with the EUT by using the Setup tab.
- Open the Tx tab and set the
transmission mode to “Continuous”.
- Configure the EUT to the desired
parameters such as Channel/Frequency, Data Rate, Data Pattern, Power Level, and so
forth).
- Click on “ Start Tx Testing”.
- Carry out the tests as per Annex-C of
EN 300 328 [3] measurement procedure.
- Repeat the above for other data
rates/modulations and also other desired channels.
- The Unwanted Emission levels in the
spurious domain comply with the limits shown in the Limits on Transmitter
Unwanted Emissions in Spurious Domain - Non-FHSS table of CE
Regulations for SRDs Operating in License-Free 2.4 GHz/5 GHz
Bands [1] for all the test cases.