Harman Kardon GO PLAY WIRELESS (serv.man4) EMC - CB Certificate ▷ View online
Report No.: EM201200637-2 Application No.: ZJ00022731 Page 5 of 18
2. LABORATORY AND ACCREDITATIONS
2.1 LABORATORY
The tests and measurements refer to this report were performed by Guangzhou GRG Metrology and
Test CO., LTD.
Add.
: 163 Pingyun Rd, West of Huangpu Ave, Guangzhou, 510656, P. R. China
Telephone: +86-20-38699959, 38699960, 38699961
Fax
: +86-20-38695185
2.2 ACCREDITATIONS
Our laboratories are accredited and approved by the following approval agencies according to
ISO/IEC 17025.
ISO/IEC 17025.
USA
FCC Listed Lab (No. 688188)
China
CNAS （No.L0446）
China
DILAC (No.DL175)
Canada
Registration No.:8355A-1
2.3 MEASUREMENT UNCERTAINTY
Where relevant, the following measurement uncertainty levels have been estimated for tests
performed on the EUT as specified in CISPR 16-4-2:
Measurement
Frequency
Uncertainty
Radiated
Emission
Horizontal
30MHz～1000MHz
4.2dB
1GHz～12.75GHz
4.2dB
Vertical
30MHz～1000MHz
4.4dB
1GHz～12.75GHz
4.4dB
This uncertainty represents an expanded uncertainty factor of
k=2.
Report No.: EM201200637-2 Application No.: ZJ00022731 Page 6 of 18
2.4
LIST OF TEST EQUIPMENT USED AT GRGT
Name of Equipment
Manufacturer
Model
Serial Number Calibration Due
Biconical Log-periodic
Antenna
Antenna
ETS.LINDGREN 3142C 00075971
2014-05-26
Signal
Generator R&S
SML03 103002 2013-11-14
Receiver R&S
ESU40
100106
2013-02-04
Biconical antenna
ELECTRO-METRICS BIA-30S
166
2014-05-26
log-periodical antenna ELECTRO-METRICS LPA-30
383
2014-05-26
Horn antenna
ETS.LINDGREN
3117
00075824
2013-08-19
Horn antenna
SCHWARZBECK BBHA9120D D752
2013-10-14
Temperature and
Humidity box
Humidity box
CEPREI
CEEC-MSJ-
60BE
60BE
11015 2013-05-21
AC power supply
WEST WE-1120
681598
2013-05-31
Report No.: EM201200637-2 Application No.: ZJ00022731 Page 7 of 18
3. TECHNICAL REQUIREMENTS SPECIFICATION IN EN 62311
3.1 GENERAL DESCRIPTION OF APPLIED STANDARDS
EN 62311 Generic standard to demonstrate the compliance of electronic and electrical
apparatus with the basic restrictions related to human exposure to electromagnetic fields (0
Hz–300 GHz) is to demonstrate the compliance of apparatus with the basic restrictions or
reference levels on exposure of the general public related to electric, magnetic,
electromagnetic fields as well as induced and contact current.
apparatus with the basic restrictions related to human exposure to electromagnetic fields (0
Hz–300 GHz) is to demonstrate the compliance of apparatus with the basic restrictions or
reference levels on exposure of the general public related to electric, magnetic,
electromagnetic fields as well as induced and contact current.
3.2 RF EXPOSURE EVALUATION
3.2.1 LIMIT:
According to EN 62311, If the average power emitted by the base station is less than or
equal to 20 mW then the base station is deemed to comply without testing.
equal to 20 mW then the base station is deemed to comply without testing.
If the average power emitted by the base station is less than or equal to 20 mW then the
base station is deemed to comply without testing.
base station is deemed to comply without testing.
If the average power emitted by the base station is more than 20 mW, then E, H or SAR
calculations and/or measurements shall be performed according to Clause 4. The results
of
of
calculations and/or measurements shall be compared directly to the limits.
The product is deemed to fulfil the requirements of this standard if the calculated and/or
measured
measured
values are less than or equal to the limits.
NOTE In the setting of basic restrictions and the derived reference levels, safety factors
have been taken into account. In the specification of the assessment method, uncertainty
has been constrained. This is the reason for not requiring that the measured values shall
be compared to the limit reduced by the measurement uncertainty.
Test conclusion:
MPE calculate procedure:
have been taken into account. In the specification of the assessment method, uncertainty
has been constrained. This is the reason for not requiring that the measured values shall
be compared to the limit reduced by the measurement uncertainty.
Test conclusion:
MPE calculate procedure:
According to the formula S =
2
4 R
PG
π
Where: S = power density (in appropriate units, e.g. mW/cm
2
)
P = power input to the antenna (in appropriate units, e.g., mW)
G = power gain of the antenna in the direction of interest relative to an isotropic
radiator.
R = distance to the center of radiation of the antenna (appropriate units, e.g., cm)
And the limit of table 2 of Council Recommendation 1999/519/EC
Report No.: EM201200637-2 Application No.: ZJ00022731 Page 8 of 18
Now the EUT frequency rang in 2400-2480MHz, so the limit S for it are 10W/m
2
.
The antenna port of EUT Max output power are 3.74dBm (2.37mW), the peak gain of the integral
antenna is specified as being 3
antenna is specified as being 3
dBi. 3dB logarithmic terms convert to numeric result is nearly 2.
So the
R1=
S
PG
π
4
=
10000
14
.
3
4
2
2.37
×
×
×
= 1.94 cm
So the recommend use distance for EUT external antenna is larger than 1.94 cm.
This minimum safe distance is automatically provided by the enclosure of the device.
This minimum safe distance is automatically provided by the enclosure of the device.
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