Harman Kardon DVD 30 EMC - CB Certificate ▷ View online
Test report no. 305945I
Page 7 (12)
Photos of the EUT showing the location of the selected test points.
Front side (3) display, control buttons, phones outlet and cover
Rear side (1) in- and outlet reachable metal (2) in –and outlet, cover
Test report no. 305945I
Page 8 (12)
5.4 Measurement uncertainty
The uncertainty of the applied electrostatic discharges is within the tolerance specified by the standard.
5.5 Test equipment
Equipment Manufacturer
Type SEMKO
No.
ESD-generator:
Schaffner
NSG 435 ESD simulator
5854
Discharge tip:
Schaffner
Air discharge
8938
Schaffner
Contact
discharge
9105
Reference ground plane
Aluminium: 3,5 m x 3,0 m x 1,5 mm
Horizontal coupling plane
Aluminium: 1,6 m x 0,8 m x 1,5 mm
Vertical coupling plane
Aluminium: 0,5m x 0,5 m x 1,5 mm
5.6 Test protocol
Date of test: 10 June, 2003
Test point
#
Test level
[kV]
Air/
Contact
Polarity
(+/-)
Pass/
Fail
Comment
HCP 1-4
4
Contact
+/-
Pass
-
VCP 1-4
4
Contact
+/-
Pass
-
1 4
Contact
+/-
Pass
-
2 8
Air
+/-
Pass
-
3 8
Air
+/-
Pass
-
Test report no. 305945I
Page 9 (12)
6. IMMUNITY TO RADIATED ELECTROMAGNETIC FIELDS, EN 61000-4-3
6.1 Operating environment
The test was performed in a semi-anechoic shielded chamber.
Temperature: 21
The test was performed in a semi-anechoic shielded chamber.
Temperature: 21
°C
Relative Humidity:
49 %
6.2 Test set-up
The EUT was placed on a non-metallic table 0,8 m above the reference ground plane and was operated
according to its specified operating mode.
Ferrite tiles/absorbers were placed on the RGP between the EUT and the antenna to reduce the reflections
from the RGP. The cables were exposed for the electromagnetic field for 1 m vertically and 1 m horizontally.
Photos of the test set-up.
Test report no. 305945I
Page 10 (12)
6.3 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 1,0 m x 1,5 m is in accordance with the standard.
6.4 Test conditions
Test level:
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 1,0 m x 1,5 m is in accordance with the standard.
6.4 Test conditions
Test level:
3 V/m, 50 % duty cycle, 200 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:
Horizontal and vertical
Antenna distances:
1,8 m
Exposed sides:
Front and rear
6.5 Measurement uncertainty
The measurement uncertainty is: ± 2,4 dB.
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.
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