Report 2.4G WIFI rev.1

FCC ID: ZKJ-KITCHENHUB1

Test Report

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FCCID_4178182

Report No.: 190100007SHA-001

TEST REPORT

Content
REVISION HISTORY................................................................................................................................................ 5
MEASUREMENT RESULT SUMMARY ..................................................................................................................... 6
1 GENERAL INFORMATION ............................................................................................................................. 7
1.1 DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) ..................................................................................................... 7
1.2 TECHNICAL SPECIFICATION .................................................................................................................................... 7
1.3 DESCRIPTION OF TEST FACILITY .............................................................................................................................. 8
2 TEST SPECIFICATIONS ................................................................................................................................... 9
2.1 STANDARDS OR SPECIFICATION ............................................................................................................................... 9
2.2 MODE OF OPERATION DURING THE TEST................................................................................................................... 9
2.3 TEST SOFTWARE LIST .......................................................................................................................................... 10
2.4 TEST PERIPHERALS LIST ....................................................................................................................................... 10
2.5 TEST ENVIRONMENT CONDITION:.......................................................................................................................... 10
2.6 INSTRUMENT LIST .............................................................................................................................................. 11
2.7 MEASUREMENT UNCERTAINTY ............................................................................................................................. 12
3 MINIMUM 6DB BANDWIDTH..................................................................................................................... 13
3.1 LIMIT .............................................................................................................................................................. 13
3.2 MEASUREMENT PROCEDURE ............................................................................................................................... 13
3.3 TEST CONFIGURATION ........................................................................................................................................ 13
3.4 TEST RESULTS OF MINIMUM 6DB BANDWIDTH ....................................................................................................... 13
4 MAXIMUM CONDUCTED OUTPUT POWER AND E.I.R.P. ............................................................................. 14
4.1 LIMIT .............................................................................................................................................................. 14
4.2 MEASUREMENT PROCEDURE ............................................................................................................................... 14
4.3 TEST CONFIGURATION ........................................................................................................................................ 15
4.4 TEST RESULTS OF MAXIMUM CONDUCTED OUTPUT POWER........................................................................................ 15
5 POWER SPECTRUM DENSITY ..................................................................................................................... 16
5.1 LIMIT .............................................................................................................................................................. 16
5.2 MEASUREMENT PROCEDURE ............................................................................................................................... 16
5.3 TEST CONFIGURATION ........................................................................................................................................ 17
5.4 TEST RESULTS OF POWER SPECTRUM DENSITY ......................................................................................................... 17
6 EMISSION OUTSIDE THE FREQUENCY BAND .............................................................................................. 18
6.1 LIMIT .............................................................................................................................................................. 18
6.2 MEASUREMENT PROCEDURE ............................................................................................................................... 18
6.3 TEST CONFIGURATION ........................................................................................................................................ 19
6.4 THE RESULTS OF EMISSION OUTSIDE THE FREQUENCY BAND........................................................................................ 19
7 RADIATED EMISSIONS IN RESTRICTED FREQUENCY BANDS ........................................................................ 20
7.1 LIMIT .............................................................................................................................................................. 20
7.2 MEASUREMENT PROCEDURE ............................................................................................................................... 20
7.3 TEST CONFIGURATION ........................................................................................................................................ 22
7.4 TEST RESULTS OF RADIATED EMISSIONS ................................................................................................................. 24
8 POWER LINE CONDUCTED EMISSION......................................................................................................... 29
8.1 LIMIT .............................................................................................................................................................. 29
8.2 TEST CONFIGURATION ........................................................................................................................................ 29
8.3 MEASUREMENT PROCEDURE ............................................................................................................................... 30
8.4 TEST RESULTS OF POWER LINE CONDUCTED EMISSION............................................................................................... 31

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9 OCCUPIED BANDWIDTH ............................................................................................................................ 33
9.1 LIMIT .............................................................................................................................................................. 33
9.2 MEASUREMENT PROCEDURE ............................................................................................................................... 33
9.3 TEST CONFIGURATION ........................................................................................................................................ 33
9.4 THE RESULTS OF OCCUPIED BANDWIDTH ................................................................................................................ 33
10 ANTENNA REQUIREMENT .......................................................................................................................... 34

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Revision History

Report No. Version Description Issued Date
190100007SHA-001 Rev. 01 Initial issue of report February 18, 2019

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1.3 Description of Test Facility

Name: Intertek Testing Services Shanghai

Address: Building 86, No. 1198 Qinzhou Road (North), Shanghai 200233, P.R. China

Telephone: 86 21 61278200

Telefax: 86 21 54262353

The test facility is CNAS Accreditation Lab
recognized, Registration No. CNAS L0139
certified, or
FCC Accredited Lab
accredited by these
Designation Number: CN1175
organizations:
IC Registration Lab
Registration code No.: 2042B-1
VCCI Registration Lab
Registration No.: R-4243, G-845, C-4723, T-2252
A2LA Accreditation Lab
Certificate Number: 3309.02

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2.3 Test software list

Test Items Software Manufacturer Version

Conducted emission ESxS-K1 R&S V2.1.0

Radiated emission ES-K1 R&S V1.71

2.4 Test peripherals list

Item No. Name Band and Model Description

1 Laptop computer HP, 6470b AC 230V 50Hz

2.5 Test environment condition:

Test items Temperature Humidity

Minimum 6dB Bandwidth
Maximum conducted output power and e.i.r.p.
Power spectrum density 23C 52% RH

Emission outside the frequency band

Occupied bandwidth

Radiated Emissions in restricted frequency bands 22C 55% RH
Power line conducted emission 21C 52% RH

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2.7 Measurement uncertainty

The measurement uncertainty represents an expanded uncertainty expressed at approximately
the 95% confidence level using a coverage factor of k=2.

Test item Measurement uncertainty

Maximum peak output power  0.74dB

Radiated Emissions in restricted frequency bands
 4.90dB
below 1GHz

Radiated Emissions in restricted frequency bands
 5.02dB
above 1GHz

Emission outside the frequency band  2.89dB

Power line conducted emission  3.19dB

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4 Maximum conducted output power and e.i.r.p.
Test result: Pass

4.1 Limit

For systems using digital modulation in the 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz bands:
1 W. (The e.i.r.p. shall not exceed 4 W)

If the transmitting antenna of directional gain greater than 6dBi is used, the power shall be reduced by
the amount in dB that the directional gain of the antenna exceeds 6dBi. If there have a beam forming
type, the limit should be the minimum of 30dBm and 30+ (6 –antenna gain-beam forming gain).

4.2 Measurement Procedure

a) Measure the duty cycle, x, of the transmitter output signal as described in Section 6.0.
b) Set span to at least 1.5 x OBW.
c) Set RBW = 1 % to 5 % of the OBW, not to exceed 1 MHz.
d) Set VBW ≥ 3 x RBW.
e) Number of points in sweep ≥ 2 x span / RBW. (This gives bin-to-bin spacing ≤ RBW/2, so that
narrowband signals are not lost between frequency bins.)
f) Sweep time = auto.
g) Detector = RMS (i.e., power averaging), if available. Otherwise, use sample detector mode.
h) Do not use sweep triggering. Allow the sweep to “free run”.
i) Trace average at least 100 traces in power averaging (i.e., RMS) mode; however, the number of
traces to be averaged shall be increased above 100 as needed such that the average accurately
represents the true average over the on and off periods of the transmitter.
j) Compute power by integrating the spectrum across the OBW of the signal using the instrument’s
band power measurement function with band limits set equal to the OBW band edges. If the
instrument does not have a band power function, sum the spectrum levels (in power units) at
intervals equal to the RBW extending across the entire OBW of the spectrum.
k) Add 10 log (1/x), where x is the duty cycle, to the measured power in order to compute the average
power during the actual transmission times (because the measurement represents an average over
both the on- and off-times of the transmission). For example, add 10 log (1/0.25) = 6 dB if the duty
cycle is 25 %.

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5 Power spectrum density
Test result: Pass

5.1 Limit

For digitally modulated systems, the power spectral density conducted from the intentional radiator to
the antenna shall not be greater than 8dBm in any 3 kHz band during any time interval of continuous
transmission.

If the transmitting antenna of directional gain greater than 6dBi is used, the power shall be reduced by
the amount in dB that the directional gain of the antenna exceeds 6dBi. If there have a beam forming
type, the limit should be the minimum of 8dBm/MHz and 8+ (6 –antenna gain-beam forming gain).

5.2 Measurement Procedure
This procedure is applicable when the EUT cannot be configured to transmit continuously (i.e., duty
cycle < 98 %), and when sweep triggering/signal gating cannot be used to measure only when the EUT is
transmitting at its maximum power control level, and when the transmission duty cycle is constant (i.e.,
duty cycle variations are less than ± 2 %):

a) Measure the duty cycle (x) of the transmitter output signal as described in Section 6.0.
b) Set instrument center frequency to DTS channel center frequency.
c) Set span to at least 1.5 x OBW.
d) Set RBW to: 3 kHz ≤ RBW ≤ 100 kHz.
e) Set VBW ≥3 x RBW.
f) Detector = power averaging (RMS) or sample detector (when RMS not available).
g) Ensure that the number of measurement points in the sweep ≥ 2 x span/RBW.
h) Sweep time = auto couple.
i) Do not use sweep triggering. Allow sweep to “free run”.
j) Employ trace averaging (RMS) mode over a minimum of 100 traces.
k) Use the peak marker function to determine the maximum amplitude level.
l) Add 10 log (1/x), where x is the duty cycle measured in step (a, to the measured PSD to compute the
average PSD during the actual transmission time.
m) If resultant value exceeds the limit, then reduce RBW (no less than 3 kHz) and repeat (note that this
may require zooming in on the emission of interest and reducing the span in order to meet the
minimum measurement point requirement as the RBW is reduced).

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6 Emission outside the frequency band
Test result: Pass

6.1 Limit

In any 100 kHz bandwidth outside the frequency band in which the spread spectrum intentional radiator
is operating, the radio frequency power that is produced by the intentional radiator shall be at least 30
dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired
power.

6.2 Measurement Procedure

Reference level measurement
Establish a reference level by using the following procedure:
a) Set instrument center frequency to DTS channel center frequency.
b) Set the span to ≥ 1.5 times the DTS bandwidth.
c) Set the RBW = 100 kHz.
d) Set the VBW ≥ 3 x RBW.
e) Detector = peak.
f) Sweep time = auto couple.
g) Trace mode = max hold.
h) Allow trace to fully stabilize.
i) Use the peak marker function to determine the maximum PSD level.

Emission level measurement
a) Set the center frequency and span to encompass frequency range to be measured.
b) Set the RBW = 100 kHz.
c) Set the VBW ≥ 3 x RBW.
d) Detector = peak.
e) Sweep time = auto couple.
f) Trace mode = max hold.
g) Allow trace to fully stabilize.
h) Use the peak marker function to determine the maximum amplitude level.

Ensure that the amplitude of all unwanted emissions outside of the authorized frequency band
(excluding restricted frequency bands) are attenuated by at least the minimum requirements specified
in 11.1 a) or 11.1 b). Report the three highest emissions relative to the limit.

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7 Radiated Emissions in restricted frequency bands
Test result: Pass

7.1 Limit

The radiated emissions which fall in the restricted bands, must also comply with the radiated
emission limits specified showed as below:

Frequencies Field Strength Measurement Distance
(MHz) (microvolts/meter) (meters)
0.009 ~ 0.490 2400/F(kHz) 300
0.490 ~ 1.705 24000/F(kHz) 30
1.705 ~ 30.0 30 30
30 ~ 88 100 3
88 ~ 216 150 3
216 ~ 960 200 3
Above 960 500 3

7.2 Measurement Procedure
For Radiated emission below 30MHz:

a) The EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 meter
chamber room. The table was rotated 360 degrees to determine the position of the highest
radiation.
b) The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on
the top of a variable-height antenna tower.
c) Both X and Y axes of the antenna are set to make the measurement.
d) For each suspected emission, the EUT was arranged to its worst case and the rotatable table was
turned from 0 degrees to 360 degrees to find the maximum reading.
e) The test-receiver system was set to Quasi-Peak Detect Function and Specified Bandwidth with
Maximum Hold Mode.
NOTE:
1. The resolution bandwidth and video bandwidth of test receiver/spectrum analyzer is 9kHz at
frequency below 30MHz.

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For Radiated emission above 30MHz:

a) The EUT was placed on the top of a rotating table 0.8 meters (for 30MHz ~ 1GHz) / 1.5 meters (for
above 1GHz) above the ground at 3 meter chamber room for test. The table was rotated 360
degrees to determine the position of the highest radiation.
b) The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on
the top of a variable-height antenna tower.
c) The height of antenna is varied from one meter to four meters above the ground to determine the
maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are
set to make the measurement.
d) For each suspected emission, the EUT was arranged to its worst case and then the antenna was
tuned to heights from 1 meter to 4 meters and the rotatable table was turned from 0 degrees to 360
degrees to find the maximum reading.
e) The test-receiver system was set to quasi-peak detect function and specified bandwidth with
maximum hold mode when the test frequency is below 1 GHz.
f) The test-receiver system was set to peak and average detect function and specified bandwidth with
maximum hold mode when the test frequency is above 1 GHz. If the peak reading value also meets
average limit, measurement with the average detector is unnecessary.

Note:
1. The resolution bandwidth and video bandwidth of test receiver/spectrum analyzer is 120kHz for
Quasi-peak detection (QP) at frequency below 1GHz.
2. The resolution bandwidth of test receiver/spectrum analyzer is 1 MHz and the video bandwidth is 3
MHz for Peak detection (PK) at frequency above 1GHz.
3. The resolution bandwidth of test receiver/spectrum analyzer is 1 MHz and the video bandwidth is ≥
1/T (Duty cycle < 98%) or 3 x RBW (Duty cycle ≥ 98%) for Average detection (AV) at frequency above
1GHz.
4. All modes of operation were investigated and the worst-case emissions are reported

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7.4 Test Results of Radiated Emissions

Consider simultaneous transmission, EUT was tested with Zigbee, Z-wave and BLE on and off, and the
worst data was listed in the report. The low frequency, which started from 9 kHz to 30MHz, was pre-
scanned and the result which was 20dB lower than the limit line per 15.31(o) was not reported.

The worst waveform from 30MHz to 1000MHz is listed as below:

Horizontal
Level [dB礦/m]
80

70

60

50

40 x x
x x
30
x
x
x
20 x x

10

0
30M 50M 70M 100M 200M 300M 500M 700M 1G
Frequency [Hz]

x MES 0111-H2_red
MES 0111-H2_pre
LIM FCC 15 F 3 QP Field Strength QP

Vertical
Level [dB礦/m]
80

70

60

50

40
x
x x x
30 x x x x
x

20 x

10

0
30M 50M 70M 100M 200M 300M 500M 700M 1G
Frequency [Hz]

x MES 0111-V2_red
MES 0111-V2_pre
LIM FCC 15 F 3 QP Field Strength QP

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Test data below 1GHz
Corrected
Frequency Correct Factor Limit Margin
Antenna Reading Detector
(MHz) (dB/m) (dBuV/m) (dB)
(dBuV/m)
H 30.00 23.10 18.60 40.00 16.90 PK

H 57.21 18.80 7.30 40.00 21.20 PK

H 74.71 19.70 7.50 40.00 20.30 PK

H 146.63 39.90 11.90 43.50 3.60 PK

H 197.17 26.50 10.90 43.50 17.00 PK

H 296.31 34.10 14.70 46.00 11.90 PK

H 451.82 32.80 18.60 46.00 13.20 PK

H 601.50 28.10 20.80 46.00 17.90 PK

H 900.86 38.50 23.50 46.00 7.50 PK

V 30.00 34.40 18.60 40.00 5.60 PK

V 47.49 33.60 9.70 40.00 6.40 PK

V 61.10 33.30 6.90 40.00 6.70 PK

V 111.64 20.40 12.70 43.50 23.10 PK

V 148.58 36.30 11.80 43.50 7.20 PK

V 197.17 29.70 10.90 43.50 13.80 PK

V 300.20 29.40 14.70 46.00 16.60 PK

V 451.82 30.90 18.60 46.00 15.10 PK

V 595.67 27.10 20.70 46.00 18.90 PK

V 900.86 30.90 23.50 46.00 15.10 PK

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Test result above 1GHz:
The emission was conducted from 1GHz to 25GHz

802.11b
Measure Reading Over
Frequency Limit Factor
CH Antenna Level Level Limit Type
(dB)
(MHz) (dBuV/m) (dBuV) (dB) (dBuV/m)

H 2390.00 54.63 23.43 -19.37 74.00 31.20 PK

H 2390.00 47.32 16.12 -6.68 54.00 31.20 AV
L
H 4824.00 45.30 42.60 -28.70 74.00 2.70 PK

V 4824.00 44.64 41.94 -29.36 74.00 2.70 PK

H 4874.00 45.53 42.85 -28.47 74.00 2.68 PK
M
V 4874.00 44.52 41.84 -29.48 74.00 2.68 PK

H 2483.50 53.41 22.22 -20.59 74.00 31.19 PK

H 2483.50 45.43 14.24 -8.57 54.00 31.19 AV
H
H 4924.00 44.42 41.65 -29.58 74.00 2.77 PK

V 4924.00 43.21 40.44 -30.79 74.00 2.77 PK

802.11g
Measure Reading Over
Frequency Limit Factor
CH Antenna Level Level Limit Type
(dB)
(MHz) (dBuV/m) (dBuV) (dB) (dBuV/m)

H 2390.00 55.43 24.23 -18.57 74.00 31.20 PK

H 2390.00 46.34 15.14 -7.66 54.00 31.20 AV
L
H 4824.00 45.54 42.84 -28.46 74.00 2.70 PK

V 4824.00 42.43 39.73 -31.57 74.00 2.70 PK

H 4874.00 46.31 43.63 -27.69 74.00 2.68 PK

V 4874.00 44.43 41.75 -29.57 74.00 2.68 PK
M
H 7311.00 45.34 37.35 -28.66 74.00 7.99 PK

V 7311.00 43.74 35.75 -30.26 74.00 7.99 PK

H 2483.50 54.32 23.13 -19.68 74.00 31.19 PK
H
H 2483.50 45.25 14.06 -8.75 54.00 31.19 AV

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H 4924.00 46.43 43.66 -27.57 74.00 2.77 PK

V 4924.00 43.51 40.74 -30.49 74.00 2.77 PK

802.11n(HT20)
Measure Reading Over
Frequency Limit Factor
CH Antenna Level Level Limit Type
(dB)
(MHz) (dBuV/m) (dBuV) (dB) (dBuV/m)

H 2390.00 57.63 26.43 -16.37 74.00 31.20 PK

H 2390.00 45.52 14.32 -8.48 54.00 31.20 AV
L
H 4824.00 44.42 41.72 -29.58 74.00 2.70 PK

V 4824.00 43.62 40.92 -30.38 74.00 2.70 PK

H 4874.00 45.31 42.64 -28.69 74.00 2.67 PK
M
V 4874.00 43.47 40.80 -30.53 74.00 2.67 PK

H 2483.50 56.36 25.17 -17.64 74.00 31.19 PK

H 2483.50 46.73 15.54 -7.27 54.00 31.19 AV
H
H 4924.00 44.13 41.37 -29.87 74.00 2.76 PK

V 4924.00 43.52 40.76 -30.48 74.00 2.76 PK

802.11n (HT40):
Measure Reading
Frequency Over Limit Limit Factor
CH Antenna Level Level Type
(MHz) (dB) (dBuV/m) (dB)
(dBuV/m) (dBuV)
H 2390.00 61.53 30.33 -12.47 74.00 31.20 PK

H 2390.00 47.42 16.22 -6.58 54.00 31.20 AV
L
H 4844.00 44.42 41.74 -29.58 74.00 2.68 PK

V 4844.00 42.52 39.84 -31.48 74.00 2.68 PK

H 4874.00 44.64 41.97 -29.36 74.00 2.67 PK
M
V 4874.00 42.28 39.61 -31.72 74.00 2.67 PK

H 2483.50 58.36 27.17 -15.64 74.00 31.19 PK

H 2483.50 46.83 15.64 -7.17 54.00 31.19 AV
H
H 4904.00 44.42 41.77 -29.58 74.00 2.65 PK

V 4904.00 43.12 40.47 -30.88 74.00 2.65 PK

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Remark: 1. Correct Factor = Antenna Factor + Cable Loss (+ Amplifier, for higher than 1GHz), the
value was added to Original Receiver Reading by the software automatically.
2. Corrected Reading = Original Receiver Reading + Correct Factor
3. Margin = Limit - Corrected Reading
4. If the PK Corrected Reading is lower than AV limit, the AV test can be elided.

Example: Assuming Antenna Factor = 30.20dB/m, Cable Loss = 2.00dB,
Gain of Preamplifier = 32.00dB, Original Receiver Reading = 10.00dBuV,
Limit = 40.00dBuV/m.
Then Correct Factor = 30.20 + 2.00 – 32.00 = 0.20dB/m;
Corrected Reading = 10dBuV + 0.20dB/m = 10.20dBuV/m;
Margin = 40.00dBuV/m - 10.20dBuV/m = 29.80dB.

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8.3 Measurement Procedure
Measured levels of ac power-line conducted emission shall be the emission voltages from the voltage
probe, where permitted, or across the 50 Ω LISN port (to which the EUT is connected), where permitted,
terminated into a 50 Ω measuring instrument. All emission voltage and current measurements shall be
made on each current-carrying conductor at the plug end of the EUT power cord by the use of mating
plugs and receptacles on the LISN, if used. Equipment shall be tested with power cords that are normally
supplied or recommended by the manufacturer and that have electrical and shielding characteristics
that are the same as those cords normally supplied or recommended by the manufacturer. For those
measurements using a LISN, the 50 Ω measuring port is terminated by a measuring instrument having
50 Ω input impedance. All other ports are terminated in 50 Ω loads.

Tabletop devices shall be placed on a platform of nominal size 1 m by 1.5 m, raised 80 cm above the
reference ground plane. The vertical conducting plane or wall of an RF-shielded (screened) room shall
be located 40 cm to the rear of the EUT. Floor-standing devices shall be placed either directly on the
reference ground-plane or on insulating material as described in ANSI C63.4. All other surfaces of
tabletop or floor-standing EUTs shall be at least 80 cm from any other grounded conducting surface,
including the case or cases of one or more LISNs.

The bandwidth of the test receiver is set at 9 kHz.

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10 Antenna requirement
Requirement:
An intentional radiator shall be designed to ensure that no antenna other than that furnished by the
responsible party shall be used with the device. The use of a permanently attached antenna or of an
antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply
with the provisions of this section.

Result:
EUT uses used a no-standard electrical connector antenna to the intentional radiator, so it can comply
with the provisions of this section.

**************************************** END ****************************************

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Document Created: 2019-02-22 16:31:56
Document Modified: 2019-02-22 16:31:56

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