Read Harman Kardon HKTS 210SUB (serv.man5) EMC - CB Certificate online
Test report no. 1018989I
Page 12 (14)
8.3 Generation of the electromagnetic field
The electromagnetic field is generated from a computer controlled signal generator. The output
power is amplified and then radiated from broad band log periodic antennas. For each sweep a
pre-recorded empty chamber calibration file is used to establish the required field strength. When
using these files the field strength inside an area of 1,5 m x 1,5 m is in accordance with the
standard.
power is amplified and then radiated from broad band log periodic antennas. For each sweep a
pre-recorded empty chamber calibration file is used to establish the required field strength. When
using these files the field strength inside an area of 1,5 m x 1,5 m is in accordance with the
standard.
8.4 Test conditions
Test level:
3 V/m, 1/8 duty cycle, 217 Hz rep. frequency
Frequency range:
895 MHz - 905 MHz
Performance criterion:
A
Frequency step:
5 MHz
Dwell time at each frequency:
15 s
Field orientation:
Vertical
Antenna distances:
3 m
Exposed sides:
Left and right (The front side of the EUT is positioned parallel to
the antenna line of sight.)
the antenna line of sight.)
Operating mode:
42 Hz sinus signal
8.5 Measurement uncertainty
The measurement uncertainty is: ± 0,82 V/m.
Measurement uncertainty is calculated in accordance with EA-4 /02:1997. The measurement
uncertainty is given with a confidence of 95%. The uncertainty calculations exclude influence of
phenomena like inhomogenity of the electric field intensity.
uncertainty is given with a confidence of 95%. The uncertainty calculations exclude influence of
phenomena like inhomogenity of the electric field intensity.
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