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(EMC) characteristics of the AirClick, the following tests were performed:
DNB Engineering Inc.
ENGINEERING, INC. Results contained in this report relate only to the
AirClick with requirements of the standards listed above
performed is as follows:
Refer to Page 2 Executive Summary.
CERTIFICATION OF TEST DATA
This report, containing electromagnetic immunity and emissions test data and
appropriate Receive device.
bottom was tapped down in order for the transmitter to remain in a Transmit state during
testing. Prior to testing the Fundamental Frequency of the Device under test was
monitored while being set up in different orientations, in order to find the position of
on a flush mounted, steel-top turntable on the open area test site as shown below. The
top of the table is 80 cm above the ground plane. The turntable can be rotated 360
degrees. Measuring antenna is set at the prescribed distance. Measurements are made
with broadband antennas that have been correlated with tuned dipole antennas. The
mast is 4.5 meters high and is self-supporting. The height of the antenna can be varied
from 1 to 4 meters. Positioning of the antenna is controlled remotely.
(30m) 1-6 Meters
(10m) 1-4 Meters
(3m) 1-4 Meters
The EUT is put into the operational test mode as stated in Section 1.4, it is then started.
The spectrum analyzer is setup to store the peak emission over the frequency range of
the antenna. Peak EUT and ambient emissions are stored while the turntable is rotated
Quasi Peak detector is then used on the frequencies identified as the highest with
respect to the plotted limit. Ambients are noted on the graph along with EUT emissions.
The highest emissions are maximized.
To maximize emissions levels, the turntable is rotated and the antenna is raised and
lowered to determine the point of maximum emanations. The cables are then
manipulated at that point to maximize emissions. Measurements are made with the
antennas in each horizontal and vertical polarization. The data obtained from these tests
is corrected with the proper cable, preamplifier and antenna factors. The results are then
transcribed onto tables that show the maximum emission levels. The highest emissions
are listed in a Radiated Emissions Summary table.
If no emissions can be found, the lowest harmonics of the EUT clocks within the bands
of the standard are tuned into with the receiver. If no emissions are found, the noise floor
will be entered to the table and noted. A minimum of six frequencies will be logged.
Summary results will reflect only actual emissions from the EUT.
analyzer or EMI receiver as the calibrated Field Intensity Meter (FIM). Preamplifiers and
filters are used when required.
calibrated to read signal level in dBm. Where:
level in dBuV/m it is necessary to add the antenna factor in dB.
Measurement Distance = 3 Meter