Read Harman Kardon HK 3390 (serv.man2) EMC - CB Certificate online
Anam Electronics Co., Ltd.
Page 7 of 17
HK3390/230
EMC Test Report
Reference No.:NK08E066
4. Evaluation Of Performance
4.1 Performance Criteria
●Criteria A
The equipment shall continue to operate as intended during the test.
No change of actual operating state is allowed as result of the application of the test.
Multifunction equipment shall for each function meet the relevant requirements.
Evaluation is carried out for audio and video functions.
No change of actual operating state is allowed as result of the application of the test.
Multifunction equipment shall for each function meet the relevant requirements.
Evaluation is carried out for audio and video functions.
1) Evaluation of audio quality
The criterion of compliance with the requirement is a wanted to unwanted audio signal ratio of ≥40dB
at a wanted audio signal level of 500mV, or at another audio signal level specified by the manufacturer.
The criterion of compliance with the requirement is a wanted to unwanted audio signal ratio of ≥40dB
at a wanted audio signal level of 500mV, or at another audio signal level specified by the manufacturer.
2) Evaluation of picture quality
In the evaluation of picture interference the wanted test signal produces a standard picture and the
unwanted signal produces a degradation of picture. The degradation may be in a number of forms,
such as a superposed pattern, disturbance of synchronization, geometrical distortion, loss of picture
contrast, of color.
In the evaluation of picture interference the wanted test signal produces a standard picture and the
unwanted signal produces a degradation of picture. The degradation may be in a number of forms,
such as a superposed pattern, disturbance of synchronization, geometrical distortion, loss of picture
contrast, of color.
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 lx to 20 lx),
at a viewing distance of six times the height of the screen.
the picture. The screen shall be observed under normal viewing conditions (brightness 15 lx to 20 lx),
at a viewing distance of six times the height of the screen.
●Criteria B
The device shall continue to operate as intended after the test. No loss of function is allowed after
the test when the apparatus is used as intended, but failures which are recovered automatically
but which cause temporary delay in processing, are permissible. No change of actual operating
state for example change of channel or stored data and settings is allowed as a result of the application
of the test. During the test, degradation of performance is allowed.
the test when the apparatus is used as intended, but failures which are recovered automatically
but which cause temporary delay in processing, are permissible. No change of actual operating
state for example change of channel or stored data and settings is allowed as a result of the application
of the test. During the test, degradation of performance is allowed.
4.2 Measurement Uncertainty
Measurement uncertainty is calibrated in accordance with:
●EMCIT document 93/30
●NAMAS Information Sheet NIS81, Ed.1 May 1994
(The treatment of uncertainties in EMC measurement).
The measurement uncertainty is not considered when deciding PASS or FAIL against the limit lines.
This means that “shared risk” (according to NAMAS publication NIS81 4.2) is used as option
Criterion. The argument for using this method, is that it is commonly accepted that the EMC limits
have already taken common good laboratory practice.
This means that “shared risk” (according to NAMAS publication NIS81 4.2) is used as option
Criterion. The argument for using this method, is that it is commonly accepted that the EMC limits
have already taken common good laboratory practice.
4.3 Final Decision
The equipment under test complies to all requirements of the applied test standards.
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