Specifications

Project No.:ZKT-211130L6532E
Page 17 of 38
(2)
The tighter limit applies at the band edges.
(3)
Emission level (dBuV/m)=20log Emission level (uV/m).
4.2.2 TEST PROCEDURE
a.
The measuring distance of at 3 m shall be used for measurements at frequency up to 25GHz. For
frequencies above 1GHz, any suitable measuring distance may be used.
b.
The EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 meter
semi-chamber test. The table was rotated 360 degrees to determine the position of the highest
radiation.
c.
The height of the equipment or of the substitution antenna shall be 0.8m; above 1GHz, the height was
1.5m, the height of the test antenna shall vary between 1 m to 4 m. Both horizontal and vertical
polarizations of the antenna are set to make the measurement.
d.
The initial step in collecting conducted emission data is a spectrum analyzer peak detector mode
pre-scanning the measurement frequency range. Significant peaks are then marked and then Quasi
Peak detector mode re-measured.
e.
If the Peak Mode measured value compliance with and lower than Quasi Peak Mode Limit, the EUT
shall be deemed to meet QP Limits and then no additional QP Mode measurement performed.
f.
For the actual test configuration, please refer to the related Item –EUT Test Photos.
g.
For the radiated emission test above 1GHz:
Place the measurement antenna away from each area of the EUT determined to be a source of
emissions at the specified measurement distance, while keeping the measurement antenna aimed at
the source of emissions at each frequency of significant emissions, with polarization oriented for
maximum response.
The measurement antenna may have to be higher or lower than the EUT, depending on the radiation
pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The
final measurement antenna elevation shall be that which maximizes the emissions. The measurement
antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m
above the ground or reference ground plane.
Note:
Both horizontal and vertical antenna polarities were tested
and performed pretest to three orthogonal axis. The worst case emissions were reported
4.2.3 DEVIATION FROM TEST STANDARD
No deviation
4.2.4 TEST SETUP
（A）Radiated Emission Test-Up Frequency Below 30MHz