Harman Kardon HD 990 (serv.man5) EMC - CB Certificate ▷ View online
Test report no. SH08090332-001
Page 32 of 76
7.3 Test Protocol
Temperature :
°C
Relative Humidity
:
%
7.4 Measurement Uncertainty
The measurement uncertainty describes the overall uncertainty of the given measured
value during the operation of the EUT.
Measurement uncertainty of harmonic test is:
value during the operation of the EUT.
Measurement uncertainty of harmonic test is:
± 5 %
The measurement uncertainty is given with a confidence of 95%, k=2.
The measurement uncertainty is traceable to internal procedure TI-036.
The measurement uncertainty is traceable to internal procedure TI-036.
Test report no. SH08090332-001
Page 33 of 76
8. Voltage Fluctuations-Flicker
Test result: PASS
8.1 Block Diagram of Test Setup
8.2 Test Setup and Test Procedure
8.2.1 Definition
Flicker: impression of unsteadiness of visual sensation induced by a lighting
stimulus whose luminance or spectral distribution fluctuates with time.
Pst:
Short-term flicker indicator The flicker severity evaluated over a short
period (in minutes); Pst=1 is the conventional threshold of irritability
Plt:
long-term flicker indicator; the flicker severity evaluated over a long
period (a few hours). Using successive Pst values.
dc:
the relative steady-state voltage change
dmax:
the maximum relative voltage change
d(t):
the value during a voltage change
8.2.2 Test condition
The EUT was set to produce the most unfavorable sequence of voltage changes.
Harmonic & flicker
test system
test system
EUT
AE
Test report no. SH08090332-001
Page 34 of 76
8.3 Test Protocol
The tested object operated under the operating condition specified in EN61000-3-
3:1995/+A1:2001
The following limits apply
3:1995/+A1:2001
The following limits apply
--
“Plt” shall not exceed 0.65.
-- “Pst” shall not exceed 1.0.
-- “dc” shall not exceed 3.3%.
-- “dmax” shall not exceed 4/6/7%*
-- d(t) shall not exceed 3.3% for more than 500ms.
-- “dc” shall not exceed 3.3%.
-- “dmax” shall not exceed 4/6/7%*
-- d(t) shall not exceed 3.3% for more than 500ms.
Notes: * means for
4% limit, without additional conditions
6% limit, switched manually or automatically more than twice per day
7% limit, switched automatically for no more than twice per day or attended
while in use.
Temperature :
°C
Relative Humidity
:
%
The EUT has no means to generate the flicker exceed the specific limit, so it is
deemed to fulfill with the requirement without testing.
deemed to fulfill with the requirement without testing.
8.4 Measurement Uncertainty
The measurement uncertainty describes the overall uncertainty of the given measured
value during the operation of the EUT.
Measurement uncertainty of voltage fluctuation and flicker is:
value during the operation of the EUT.
Measurement uncertainty of voltage fluctuation and flicker is:
± 12%
The measurement uncertainty is given with a confidence of 95%, k=2.
The measurement uncertainty is traceable to internal procedure TI-036.
The measurement uncertainty is traceable to internal procedure TI-036.
Test report no. SH08090332-001
Page 35 of 76
Immunity Test
Performance criteria
The performance criteria are based on the general criteria of the standard and derived
from the product specification
from the product specification
<r>
Criterion A: Continue to operate as intended during the test. No change of actual
operating state, for example change of channel is allowed as a result of the application of
the test. Evaluation is carried out for audio and video functions.
Evaluation of audio quality:
Unless otherwise specified in this standard, the criterion of compliance with the
requirement is a wanted to unwanted audio signal ratio of >=40dB at a wanted audio
signal level of 50mW.
For AM sound receivers the criterion is >=26dB at 50mW.
The criterion for the audio part of TV receivers is >=40dB.
For AM and FM car radios, the criterion is >=26dB at 500mW.
Evaluation of picture quality
The criterion of compliance with the requirement is just perceptible degradation by
observation of the picture, the screen shall be observed under normal viewing conditions
(brightness 15~20 Lux), at a viewing distance of six times the height of the screen.
In the case of video tape equipment the test criteria relate to the picture, assessed on a
test-TV-set, which is connected to the video output terminal of the equipment.
Criterion B: Continue to operate as intended after the test .No degradation of performance
or loss of function. During the test degradation of performance is allowed, however no
change of actual operating state or stored date.
Criterion C: Temporary loss of function is allowed, provided the function is self-
recoverable or can be restored by the operation of the controls.
operating state, for example change of channel is allowed as a result of the application of
the test. Evaluation is carried out for audio and video functions.
Evaluation of audio quality:
Unless otherwise specified in this standard, the criterion of compliance with the
requirement is a wanted to unwanted audio signal ratio of >=40dB at a wanted audio
signal level of 50mW.
For AM sound receivers the criterion is >=26dB at 50mW.
The criterion for the audio part of TV receivers is >=40dB.
For AM and FM car radios, the criterion is >=26dB at 500mW.
Evaluation of picture quality
The criterion of compliance with the requirement is just perceptible degradation by
observation of the picture, the screen shall be observed under normal viewing conditions
(brightness 15~20 Lux), at a viewing distance of six times the height of the screen.
In the case of video tape equipment the test criteria relate to the picture, assessed on a
test-TV-set, which is connected to the video output terminal of the equipment.
Criterion B: Continue to operate as intended after the test .No degradation of performance
or loss of function. During the test degradation of performance is allowed, however no
change of actual operating state or stored date.
Criterion C: Temporary loss of function is allowed, provided the function is self-
recoverable or can be restored by the operation of the controls.
Basic EMC standard for immunity test
EN 61000-4-2: 1995/+A1:1998/+A2:2001: Electromagnetic Compatibility (EMC) – Part
4: testing and measurement techniques – section 2: electrostatic discharge immunity test
EN 61000-4-3: 2002/+A1:2002: Electromagnetic Compatibility (EMC) – Part 4: testing
and measurement techniques – section 3: radiated, radio frequency, electromagnetic field
immunity test
EN61000-4-4: 2004: Electromagnetic Compatibility (EMC) – Part 4: testing and
measurement techniques – section 4: electric fast transient/burst immunity test
EN 61000-4-2: 1995/+A1:1998/+A2:2001: Electromagnetic Compatibility (EMC) – Part
4: testing and measurement techniques – section 2: electrostatic discharge immunity test
EN 61000-4-3: 2002/+A1:2002: Electromagnetic Compatibility (EMC) – Part 4: testing
and measurement techniques – section 3: radiated, radio frequency, electromagnetic field
immunity test
EN61000-4-4: 2004: Electromagnetic Compatibility (EMC) – Part 4: testing and
measurement techniques – section 4: electric fast transient/burst immunity test
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