BH268A Bluetooth FM Transmitter Test Report Measurement Report VTIN TECHNOLOGY

VTIN TECHNOLOGY Bluetooth FM Transmitter

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Page 1 of 53
Report No.: HUAK180827900E
TEST REPORT
FCC PART 15 SUBPART C 15.247
Test report
On Behalf of
VTIN TECHNOLOGY Co., Limited
For
Bluetooth FM Transmitter
Model No.: BH268A
FCC ID: 2AIL4-BH268A
Prepared for :
VTIN TECHNOLOGY Co., Limited
Unit D,16/F, One Capital Place, 18 Luard Road Wan Chai, HongKong ,China
Prepared By :
Shenzhen HUAK Testing Technology Co., Ltd.
1F, B2 Building, Junfeng Zhongcheng Zhizao Innovation Park, Fuhai Street,
Bao'an District, Shenzhen City, China
Date of Test:
Aug. 20, 2018 ~ Aug. 28, 2018
Date of Report:
Aug. 28, 2018
Report Number:
HUAK180827900E
Page 2 of 53
Report No.: HUAK180827900E
TEST RESULT CERTIFICATION
Applicant’s name .................... : VTIN TECHNOLOGY Co., Limited
Address ..................................... :
Unit D,16/F, One Capital Place, 18 Luard Road Wan Chai,
HongKong ,China
Manufacture's Name ............... : VTIN TECHNOLOGY Co., Limited
Address ..................................... :
Unit D,16/F, One Capital Place, 18 Luard Road Wan Chai,
HongKong ,China
Product description
VTIN
Trade Mark:
Product name............................ : Bluetooth FM Transmitter
Model and/or type reference ... : BH268A
Standards ................................. : 47 CFR FCC Part 15 Subpart C 15.247
This publication may be reproduced in whole or in part for non-commercial purposes as long as the
Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the
material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume
liability for damages resulting from the reader's interpretation of the reproduced material due to its
placement and context.
Date of Test ................................................:
Date (s) of performance of tests .................:
Aug. 20, 2018 ~ Aug. 28, 2018
Date of Issue ...............................................:
Aug. 28, 2018
Test Result ...................................................:
Pass
Testing Engineer
(Gary Qian)
Technical Manager
(Eden Hu)
Authorized Signatory
(Jason Zhou)
Page 3 of 53
Table of Contents
1.
Report No.: HUAK180827900E
Page
SUMMARY ............................................................................................................................................................... 4
1.1.
1.2.
1.3.
1.4.
2.
TEST STANDARDS ..................................................................................................................................................... 4
TEST DESCRIPTION........................................................................................................................................................ 4
TEST FACILITY .............................................................................................................................................................. 5
STATEMENT OF THE MEASUREMENT UNCERTAINTY............................................................................................................... 5
GENERAL INFORMATION .......................................................................................................................................... 6
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
2.7.
2.8.
2.9.
3.
ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 6
GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 6
DESCRIPTION OF TEST MODES AND TEST FREQUENCY.......................................................................................................... 6
RELATED SUBMITTAL(S) / GRANT (S) ................................................................................................................................ 8
MODIFICATIONS ........................................................................................................................................................... 8
RECEIVER INPUT BANDWIDTH ......................................................................................................................................... 8
EXAMPLE OF A HOPPING SEQUENCE IN DATA MODE ........................................................................................................... 8
EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ................................................................................................... 8
EQUIPMENT USED ........................................................................................................................................................ 9
PEAK OUTPUT POWER ........................................................................................................................................... 10
3.1.
3.2.
3.3.
4.
MEASUREMENT PROCEDURE ........................................................................................................................................ 10
TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ........................................................................................................ 10
LIMITS AND MEASUREMENT RESULT .............................................................................................................................. 11
20DB BANDWIDTH ................................................................................................................................................. 17
4.1.
4.2.
4.3.
5.
MEASUREMENT PROCEDURE ........................................................................................................................................ 17
TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ........................................................................................................ 17
LIMITS AND MEASUREMENT RESULTS ............................................................................................................................. 18
CONDUCTED SPURIOUS EMISSION ......................................................................................................................... 24
5.1.
5.2.
5.3.
6.
MEASUREMENT PROCEDURE ........................................................................................................................................ 24
TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ........................................................................................................ 24
LIMITS AND MEASUREMENT RESULT .............................................................................................................................. 24
RADIATED EMISSION .............................................................................................................................................. 34
6.1.
6.2.
6.3.
7.
MEASUREMENT PROCEDURE ........................................................................................................................................ 34
TEST SETUP ............................................................................................................................................................... 36
LIMITS AND MEASUREMENT RESULT .............................................................................................................................. 37
NUMBER OF HOPPING FREQUENCY........................................................................................................................ 47
7.1.
7.2.
7.3.
8.
MEASUREMENT PROCEDURE ........................................................................................................................................ 47
TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) ......................................................................................................... 47
LIMITS AND MEASUREMENT RESULT .............................................................................................................................. 47
TIME OF OCCUPANCY (DWELL TIME) ...................................................................................................................... 48
8.1.
8.2.
8.3.
9.
MEASUREMENT PROCEDURE ........................................................................................................................................ 48
TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) ......................................................................................................... 48
LIMITS AND MEASUREMENT RESULT .............................................................................................................................. 48
FREQUENCY SEPARATION ....................................................................................................................................... 52
9.1.
9.2.
9.3.
10.
MEASUREMENT PROCEDURE ........................................................................................................................................ 52
TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) ......................................................................................................... 52
LIMITS AND MEASUREMENT RESULT .............................................................................................................................. 52
TEST SETUP PHOTOS OF THE EUT ....................................................................................................................... 53
Page 4 of 53
Report No.: HUAK180827900E
1. SUMMARY
1.1. TEST STANDARDS
The tests were performed according to following standards:
FCC Rules Part 15.247: Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in
operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz
ANSI C63.10:2013 : American National Standard for Testing Unlicensed Wireless Devices
1.2. Test Description
FCC PART 15.247
FCC Part 15.207
AC Power Conducted Emission
N/A
FCC Part 15.247(a)(1)(i)
20dB Bandwidth
PASS
FCC Part 15.247(d)
Spurious RF Conducted Emission
PASS
FCC Part 15.247(b)
Maximum Peak Output Power
PASS
FCC Part 15.247(b)
Pseudorandom Frequency Hopping Sequence
PASS
FCC Part 15.247(a)(1)(iii)
Number of hopping frequency& Time of Occupancy
PASS
FCC Part 15.247(a)(1)
Frequency Separation
PASS
FCC Part 15.205/15.209
Radiated Emissions
PASS
FCC Part 15.247(d)
Band Edge Compliance of RF Emission
PASS
NOTE: N/A stands for not applicable. The device is only used in the car, so the conducted emission is not
applicable.
Page 5 of 53
Report No.: HUAK180827900E
1.3. Test Facility
1.3.1 Address of the test laboratory
Shenzhen HUAK Testing Technology Co., Ltd.
Add.:1F, B2 Building, Junfeng Zhongcheng Zhizao Innovation Park,Heping Community, Fuhai Street,
Bao'an District, Shenzhen, China
There is one 3m semi-anechoic chamber and two line conducted labs for final test. The Test Sites meet the
requirements in documents ANSI C63.4 and CISPR 32/EN 55032 requirements.
1.3.2 Laboratory accreditation
The test facility is recognized, certified, or accredited by the following organizations:
IC Registration No.: 21210
The 3m alternate test site of Shenzhen HUAK Testing Technology Co., Ltd. EMC Laboratory has been
registered by Certification and Engineer Bureau of Industry Canada for the performance of with Registration
No.: 21210 on May 24, 2016.
FCC Registration No.: CN1229
Test Firm Registration Number : 616276
1.4. Statement of the measurement uncertainty
The data and results referenced in this document are true and accurate. The reader is cautioned that there
may be errors within the calibration limits of the equipment and facilities. The measurement uncertainty was
calculated for all measurements listed in this test report acc. to CISPR 16 - 4 “Specification for radio
disturbance and immunity measuring apparatus and methods – Part 4: Uncertainty in EMC
Measurements“ and is documented in the Shenzhen HUAK Testing Technology Co., Ltd. quality system acc.
to DIN EN ISO/IEC 17025. Furthermore, component and process variability of devices similar to that tested
may result in additional deviation. The manufacturer has the sole responsibility of continued compliance of
the device.
Hereafter the best measurement capability for HUAK laboratory is reported:
Measurement
Test
Uncertainty
Notes
Transmitter power conducted
±0.57 dB
(1)
Transmitter power Radiated
±2.20 dB
(1)
Conducted spurious emission 9KHz-40 GHz
±2.20 dB
(1)
Occupied Bandwidth
±0.01ppm
(1)
Radiated Emission 30~1000MHz
±4.10dB
(1)
Radiated Emission Above 1GHz
±4.32dB
(1)
Conducted Disturbance0.15~30MHz
±3.20dB
(1)
(1) This uncertainty represents an expanded uncertainty expressed at approximately the 95%
confidence level using a coverage factor of k=2.
Page 6 of 53
Report No.: HUAK180827900E
2. GENERAL INFORMATION
2.1. Environmental conditions
During the measurement the environmental conditions were within the listed ranges:
Normal Temperature:
25°C
Relative Humidity:
55 %
Air Pressure:
101 kPa
2.2. General Description of EUT
Product Name:
Bluetooth FM Transmitter
Model/Type reference:
BH268A
Power supply:
DC12/24V
Version:
Supported BT4.2
Modulation:
GFSK, π/4DQPSK, 8DPSK
Operation frequency:
2402MHz~2480MHz
Channel number:
79
Channel separation:
1MHz
Antenna type:
PCB Antenna
Antenna gain:
-0.68dBi
Hardware Version:
V0.2
Software Version:
V1.0
Note: For more details, refer to the user’s manual of the EUT.
2.3. Description of Test Modes and Test Frequency
The Applicant provides communication tools software to control the EUT for staying in continuous
transmitting and receiving mode for testing.
There are 79 channels provided to the EUT and Channel 00/39/78 was selected for testing.
Operation Frequency:
Channel
Frequency (MHz)
00
2402
01
2403
...
...
38
2440
39
2441
40
2442
...
...
77
2479
78
2480
Note: The line display in grey were the channel selected for testing
Page 7 of 53
Report No.: HUAK180827900E
NO.
TEST MODE DESCRIPTION
Low channel TX
Middle channel TX
High channel TX
Normal Operating (BT)
Note:
1. Only the result of the worst case was recorded in the report, if no other cases.
2. For Radiated Emission, 3axis were chosen for testing for each applicable mode.
Page 8 of 53
Report No.: HUAK180827900E
2.4. Related Submittal(s) / Grant (s)
This submittal(s) (test report) is intended to comply with Section 15.247 of the FCC Part 15, Subpart C
Rules.
2.5. Modifications
No modifications were implemented to meet testing criteria.
2.6. Receiver Input Bandwidth
The input bandwidth of the receiver is 1.3MHZ,In every connection one Bluetooth device is the
master and the other one is slave. The master determines the hopping sequence. The slave follows this
sequence. Both devices shift between RX and TX time slot according to the clock of the
master. Additionally the type of connection(e.g. single of multislot packet) is set up at the beginning of the
connection. The master adapts its hopping frequency and its TX/RX timing according to the packet type of
the connection. Also the slave of the connection will use these settings.
Repeating of a packet has no influence on the hopping sequence. The hopping sequence generated
by the master of the connection will be followed in any case. That means, a repeated packet will not
be send on the same frequency, it is send on the next frequency of the hopping sequence.
2.7. Example of a Hopping Sequence in Data Mode
Example of a 79 hopping sequence in data mode:
40,21,44,23,42,53,46,55,48,33,52,35,50,65,54,67
56,37,60,39,58,69,62,71,64,25,68,27,66,57,70,59
72,29,76,31,74,61,78,63,01,41,05,43,03,73,07,75
09,45,13,47,11,77,15,00,64,49,66,53,68,02,70,06
01, 51, 03, 55, 05, 04
2.8. Equally Average Use of Frequencies and Behaviour
The generation of the hopping sequence in connection mode depends essentially on two input values:
1. LAP/UAP of the master of the connection.
2. Internal master clock
The LAP(lower address part) are the 24 LSB’s of the 48 BD_ADDRESS. The BD_ADDRESS is an
unambiguous number of every Bluetooth unit. The UAP(upper address part) are the 24MSB’s of the
48BD_ADDRESS
The internal clock of a Bluetooth unit is derived from a free running clock which is never adjusted and is
never turned off. For ehavior zation with other units only offset are used. It has no relation to the time of the
day. Its resolution is at least half the RX/TX slot length of 312.5us.The clock has a cycle of about one
day(23h30).In most case it is implemented as 28 bit counter. For the deriving of the hopping sequence the
entire. LAP(24 bits),4LSB’s(4bits)(Input 1) and the 27MSB’s of the clock(Input 2) are used. With this input
values different mathematical procedures(permutations, additions, XOR-operations)are performed to
generate te Sequence. This will be done at the beginning of every new transmission.
Regarding short transmissions the Bluetooth system has the following ehavior:
The first connection between the two devices is established, a hopping sequence was generated. For
Transmitting the wanted data the complete hopping sequence was not used. The connection ended.
The second connection will be established. A new hopping sequence is generated. Due to the fact the
Page 9 of 53
Report No.: HUAK180827900E
Bluetooth clock has a different value, because the period between the two transmission is longer(and it
Cannot be shorter) than the minimum resolution of the clock(312.5us).The hopping sequence will always
Differ from the first one.
2.9. Equipment Used
Equipment
Manufacturer
Model No.
Serial No.
1.
L.I.S.N.
Artificial Mains
Network
R&S
ENV216
HKE-002
Dec. 28, 2017 1 Year
2.
Receiver
R&S
ESCI 7
HKE-010
Dec. 28, 2017 1 Year
3.
RF automatic
control unit
Tonscend
JS0806-2
HKE-060
Dec. 28, 2017 1 Year
4.
Spectrum analyzer
R&S
FSP40
HKE-025
Dec. 28, 2017 1 Year
5.
Spectrum analyzer
Agilent
N9020A
HKE-048
Dec. 28, 2017 1 Year
6.
Preamplifier
Schwarzbeck
BBV 9743
HKE-006
Dec. 28, 2017 1 Year
7.
EMI Test Receiver
Rohde & Schwarz
ESCI 7
HKE-010
Dec. 28, 2017 1 Year
8.
Bilog Broadband
Antenna
Schwarzbeck
VULB9163
HKE-012
Dec. 28, 2017 1 Year
9.
Loop Antenna
Schwarzbeck
FMZB 1519
HKE-014
FMZB 1519 Dec.012
28, 2017
May 11,
1 Year
2016 1 Year
10.
Horn Antenna
Schewarzbeck
9120D
HKE-013
Dec. 28, 2017 1 Year
11.
Pre-amplifier
EMCI
EMC051845
SE
HKE-015
Dec. 28, 2017 1 Year
12.
Pre-amplifier
Agilent
83051A
HKE-016
Dec. 28, 2017 1 Year
13.
EMI Test Software
EZ-EMC
Tonscend
JS1120-B
Version
HKE-083
Dec. 28, 2017
14.
Power Sensor
Agilent
E9300A
HKE-086
Dec. 28, 2017 1 Year
15.
Spectrum analyzer
Agilent
N9020A
HKE-048
Dec. 28, 2017 1 Year
16.
Signal generator
Agilent
N5182A
HKE-029
Dec. 28, 2017 1 Year
17.
Signal Generator
Agilent
83630A
HKE-028
Dec. 28, 2017 1 Year
18.
Shielded room
Shiel Hong
4*3*3
HKE-039
Dec. 28, 2017 3 Year
The calibration interval was one year
Last Cal.
Cal.
Interval
Item
N/A
Page 10 of 53
Report No.: HUAK180827900E
3. Peak Output Power
3.1. Measurement Procedure
For peak power test:
1. Connect EUT RF output port to the Spectrum Analyzer through an RF attenuator
2. Span: Approximately five times the 20 dB bandwidth, centered on a hopping channel.
3. RBW > 20 dB bandwidth of the emission being measured.
4. VBW ≥RBW.
5. Sweep: Auto.
6. Detector function: Peak.
7. Trace: Max hold.
Allow trace to stabilize. Use the marker-to-peak function to set the marker to the peak of the emission.
The indicated level is the peak output power, after any corrections for external attenuators and cables.
3.2. Test Set-Up (Block Diagram of Configuration)
RF Attenuator
Page 11 of 53
Report No.: HUAK180827900E
3.3. Limits and Measurement Result
Frequency
(GHz)
PEAK OUTPUT POWER MEASUREMENT RESULT
FOR GFSK MOUDULATION
Applicable Limits
Peak Power
(dBm)
(dBm)
Pass or Fail
2.402
2.233
30
Pass
2.441
1.862
30
Pass
2.480
1.891
30
Pass
CH0
Page 12 of 53
CH39
CH78
Report No.: HUAK180827900E
Page 13 of 53
Frequency
(GHz)
Report No.: HUAK180827900E
PEAK OUTPUT POWER MEASUREMENT RESULT
FOR Π /4-DQPSK MODULATION
Applicable Limits
Peak Power
(dBm)
(dBm)
Pass or Fail
2.402
1.587
30
Pass
2.441
0.927
30
Pass
2.480
0.912
30
Pass
CH0
Page 14 of 53
CH39
CH78
Report No.: HUAK180827900E
Page 15 of 53
Frequency
(GHz)
Report No.: HUAK180827900E
PEAK OUTPUT POWER MEASUREMENT RESULT
FOR 8-DPSK MODULATION
Applicable Limits
Peak Power
(dBm)
(dBm)
Pass or Fail
2.402
1.563
30
Pass
2.441
0.939
30
Pass
2.480
0.913
30
Pass
CH0
Page 16 of 53
CH39
CH78
Report No.: HUAK180827900E
Page 17 of 53
Report No.: HUAK180827900E
4. 20dB Bandwidth
4.1. Measurement Procedure
1. Connect EUT RF output port to the Spectrum Analyzer through an RF attenuator
2, Set the EUT Work on the top, the middle and the bottom operation frequency individually.
3. Set Span = approximately 2 to 5 times the 20 dB bandwidth, centered on a hoping channel
The nominal IF filter bandwidth (3 dB RBW) shall be in the range of 1% to 5% of the OBW and video
bandwidth (VBW) shall be approximately three times RBW; Sweep = auto; Detector function = peak
4. Set SPA Trace 1 Max hold, then View.
4.2. Test Set-Up (Block Diagram of Configuration)
Page 18 of 53
Report No.: HUAK180827900E
4.3. Limits and Measurement Results
MEASUREMENT RESULT FOR GFSK MOUDULATION
Measurement Result
Applicable Limits
Test Data (MHz)
N/A
Criteria
Low Channel
0.8274
PASS
Middle Channel
0.8233
PASS
High Channel
0.8246
PASS
TEST PLOT OF BANDWIDTH FOR LOW CHANNEL
Page 19 of 53
Report No.: HUAK180827900E
TEST PLOT OF BANDWIDTH FOR MIDDLE CHANNEL
TEST PLOT OF BANDWIDTH FOR HIGH CHANNEL
Page 20 of 53
Report No.: HUAK180827900E
MEASUREMENT RESULT FORΠ /4-DQPSK MODULATION
Measurement Result
Applicable Limits
Test Data (MHz)
N/A
Criteria
Low Channel
1.112
PASS
Middle Channel
1.112
PASS
High Channel
1.119
PASS
TEST PLOT OF BANDWIDTH FOR LOW CHANNEL
Page 21 of 53
Report No.: HUAK180827900E
TEST PLOT OF BANDWIDTH FOR MIDDLE CHANNEL
TEST PLOT OF BANDWIDTH FOR HIGH CHANNEL
Page 22 of 53
Report No.: HUAK180827900E
MEASUREMENT RESULT FOR 8-DPSK MODULATION
Measurement Result
Applicable Limits
Test Data (MHz)
N/A
Criteria
Low Channel
1.116
PASS
Middle Channel
1.097
PASS
High Channel
1.108
PASS
TEST PLOT OF BANDWIDTH FOR LOW CHANNEL
Page 23 of 53
Report No.: HUAK180827900E
TEST PLOT OF BANDWIDTH FOR MIDDLE CHANNEL
TEST PLOT OF BANDWIDTH FOR HIGH CHANNEL
Page 24 of 53
Report No.: HUAK180827900E
5. Conducted Spurious Emission
5.1. Measurement Procedure
1. Connect EUT RF output port to the Spectrum Analyzer through an RF attenuator
2. Set the EUT Work on the top, the Middle and the bottom operation frequency individually.
3. Set the Span = wide enough to capture the peak level of the in-band emission and all spurious
emissions from the lowest frequency generated in the EUT up through the 10th harmonic.
RBW = 100 kHz; VBW= 300 kHz; Sweep = auto; Detector function = peak.
4. Set SPA Trace 1 Max hold, then View.
5.2. Test Set-Up (Block Diagram of Configuration)
The same as described in section 4.2
5.3. Limits and Measurement Result
LIMITS AND MEASUREMENT RESULT
Measurement Result
Applicable Limits
In any 100 KHz Bandwidth Outside the
frequency band in which the spread spectrum
intentional radiator is operating, the radio
frequency power that is produce by the intentional
radiator shall be at least 20 dB below that in
100KHz bandwidth within the band that contains
the highest level of the desired power.
In addition, radiation emissions which fall in the
restricted bands, as defined in §15.205(a), must
also comply with the radiated emission limits
specified in§15.209(a))
Test Data
Criteria
At least -20dBc than the limit
Specified on the BOTTOM
Channel
PASS
At least -20dBc than the limit
Specified on the TOP Channel
PASS
Page 25 of 53
Report No.: HUAK180827900E
TEST RESULT FOR ENTIRE FREQUENCY RANGE
TEST PLOT OF OUT OF BAND EMISSIONS WITH THE WORST CASE
OF GFSK MODULATION IN LOW CHANNEL
Page 26 of 53
Report No.: HUAK180827900E
TEST PLOT OF OUT OF BAND EMISSIONS
OF GFSK MODULATION IN MIDDLE CHANNEL
Page 27 of 53
Report No.: HUAK180827900E
TEST PLOT OF OUT OF BAND EMISSIONS
OF GFSK MODULATION IN HIGH CHANNEL
Note: The peak emissions without marker on the above plots are fundamental wave and need not to
compare with the limit. The GFSK modulation is the worst case and only those data recorded in the report.
Page 28 of 53
TEST RESULT FOR BAND EDGE
GFSK MODULATION IN LOW CHANNEL
Hopping off
Hopping on
Report No.: HUAK180827900E
Page 29 of 53
GFSK MODULATION IN HIGH CHANNEL
Hopping off
Hopping on
Report No.: HUAK180827900E
Page 30 of 53
Report No.: HUAK180827900E
π /4-DQPSK MODULATION IN LOW CHANNEL
Hopping off
Hopping on
Page 31 of 53
Report No.: HUAK180827900E
π /4-DQPSK MODULATION IN HIGH CHANNEL
Hopping off
Hopping on
Page 32 of 53
8-DPSK MODULATION IN LOW CHANNEL
Hopping off
Hopping on
Report No.: HUAK180827900E
Page 33 of 53
8-DPSK MODULATION IN HIGH CHANNEL
Hopping off
Hopping on
Report No.: HUAK180827900E
Page 34 of 53
Report No.: HUAK180827900E
6. Radiated Emission
6.1. Measurement Procedure
1. The EUT was placed on the top of the turntable 0.8 or 1.5 meter above ground. The phase center of the
receiving antenna mounted on the top of a height-variable antenna tower was placed 3 meters far away
from the turntable.
2. Power on the EUT and all the supporting units. The turntable was rotated by 360 degrees to determine
the position of the highest radiation.
3. The height of the broadband receiving antenna was varied between one meter and four meters above
ground to find the maximum emissions field strength of both horizontal and vertical polarization.
4. For each suspected emissions, the antenna tower was scan (from 1 M to 4 M) and then the turntable
was rotated (from 0 degree to 360 degrees) to find the maximum reading.
5. Set the test-receiver system to Peak or CISPR quasi-peak Detect Function with specified bandwidth
under Maximum Hold Mode.
6. For emissions above 1GHz, use 1MHz RBW and 3MHz VBW for peak reading. Place the
measurement antenna away from each area of the EUT determined to be a source of emissions at the
specified measurement distance, while keeping the measurement antenna aimed at the source of
emissions at each frequency of significant emissions, with polarization oriented for maximum response.
The measurement antenna may have to be higher or lower than the EUT, depending on the radiation
pattern of the emission and staying aimed at the emission source for receiving the maximum signal.
The final measurement antenna elevation shall be that which maximizes the emissions. The
measurement antenna elevation for maximum emissions shall be restricted to a range of heights of
from 1 m to 4 m above the ground or reference ground plane.
7. When the radiated emissions limits are expressed in terms of the average value of the emissions, and
pulsed operation is employed, the measurement field strength shall be determined by averaging over
one complete pulse train, including blanking intervals, as long as the pulse train does not exceed 0.1
seconds. As an alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases
where the pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the
average absolute voltage during a 0.1 second interval during which the field strength is at its maximum
values.
8.If the emissions level of the EUT in peak mode was 3 dB lower than the average limit specified, then
testing will be stopped and peak values of EUT will be reported, otherwise, the emissions which do not
have 3 dB margin will be repeated one by one using the quasi-peak method for below 1GHz.
9. For testing above 1GHz, the emissions level of the EUT in peak mode was lower than average limit
(that means the emissions level in peak mode also complies with the limit in average mode), then
testing will be stopped and peak values of EUT will be reported, otherwise, the emissions will be
measured in average mode again and reported.
10. In case the emission is lower than 30MHz, loop antenna has to be used for measurement and the
recorded data should be QP measured by receiver. High - Low scan is not required in this case.
Page 35 of 53
Report No.: HUAK180827900E
The following table is the setting of spectrum analyzer and receiver.
Spectrum Parameter
Setting
Start ~Stop Frequency
9KHz~150KHz/RB 200Hz for QP
Start ~Stop Frequency
150KHz~30MHz/RB 9KHz for QP
Start ~Stop Frequency
30MHz~1000MHz/RB 120KHz for QP
Start ~Stop Frequency
1GHz~26.5GHz
1MHz/3MHz for Peak, 1MHz/10Hz for Average
Receiver Parameter
Setting
Start ~Stop Frequency
9KHz~150KHz/RB 200Hz for QP
Start ~Stop Frequency
150KHz~30MHz/RB 9KHz for QP
Start ~Stop Frequency
30MHz~1000MHz/RB 120KHz for QP
Page 36 of 53
Report No.: HUAK180827900E
6.2. Test Setup
Radiated Emission Test-Setup Frequency Below 30MHz
RADIATED EMISSION TEST SETUP 30MHz-1000MHz
RADIATED EMISSION TEST SETUP ABOVE 1000MHz
Page 37 of 53
Report No.: HUAK180827900E
6.3. Limits and Measurement Result
15.209 Limit in the below table has to be followed
Frequencies
Field Strength
(MHz)
(micorvolts/meter)
Measurement Distance
(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
88~216
150
216~960
200
Above 960
500
Note: All modes were tested For restricted band radiated emission,
the test records reported below are the worst result compared to other modes.
Page 38 of 53
Report No.: HUAK180827900E
RADIATED EMISSION BELOW 30MHZ
No emission found between lowest internal used/generated frequencies to 30MHz.
RADIATED EMISSION BELOW 1GHZ
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative
Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 4
Antenna
Horizontal
RESULT: PASS
Page 39 of 53
Report No.: HUAK180827900E
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative
Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 4
Antenna
Vertical
RESULT: PASS
Note: 1. Factor=Antenna Factor + Cable loss, Margin=Measurement-Limit.
2. All test modes had been pre-tested. The mode 4 is the worst case and recorded in the report.
Page 40 of 53
Report No.: HUAK180827900E
RADIATED EMISSION ABOVE 1GHZ
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 1
Antenna
Horizontal
Frequency
Meter Reading
Factor
Emission Level
Limits
Margin
(MHz)
(dBμV)
(dB)
(dBμV/m)
(dBμV/m)
(dB)
4804.014
44.26
7.12
51.38
74
-22.62
4804.014
40.68
7.12
47.8
54
-6.2
AVG
7206.028
43.85
9.84
53.69
74
-20.31
peak
7206.028
40.22
9.84
50.06
54
-3.94
AVG
Value Type
peak
Remark:
Factor = Antenna Factor + Cable Loss – Pre-amplifier.
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 1
Antenna
Vertical
Frequency
Meter Reading
Factor
Emission Level
Limits
Margin
(MHz)
(dBμV)
(dB)
(dBμV/m)
(dBμV/m)
(dB)
4804.014
45.81
7.12
52.93
74
-21.07
4804.014
42.03
7.12
49.15
54
-4.85
AVG
7206.028
44.79
9.84
54.63
74
-19.37
peak
7206.028
39.61
9.84
49.45
54
-4.55
AVG
Remark:
Factor = Antenna Factor + Cable Loss – Pre-amplifier.
Value Type
peak
Page 41 of 53
Report No.: HUAK180827900E
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 2
Antenna
Horizontal
Frequency
Meter Reading
Factor
Emission Level
Limits
Margin
(MHz)
(dBμV)
(dB)
(dBμV/m)
(dBμV/m)
(dB)
4882.004
43.95
7.12
51.07
74
-22.93
4882.004
40.14
7.12
47.26
54
-6.74
AVG
7323.008
42.94
9.84
52.78
74
-21.22
peak
7323.008
39.48
9.84
49.32
54
-4.68
AVG
Value Type
peak
Remark:
Factor = Antenna Factor + Cable Loss – Pre-amplifier.
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 2
Antenna
Vertical
Frequency
Meter Reading
Factor
Emission Level
Limits
Margin
(MHz)
(dBμV)
(dB)
(dBμV/m)
(dBμV/m)
(dB)
4882.004
43.91
7.12
51.03
74
-22.97
peak
4882.004
37.99
7.12
45.11
54
-8.89
AVG
7323.008
42.91
9.84
52.75
74
-21.25
peak
7323.008
39.71
9.84
49.55
54
-4.45
AVG
Remark:
Factor = Antenna Factor + Cable Loss – Pre-amplifier.
Value Type
Page 42 of 53
Report No.: HUAK180827900E
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 3
Antenna
Horizontal
Frequency
Meter Reading
Factor
Emission Level
Limits
Margin
(MHz)
(dBμV)
(dB)
(dBμV/m)
(dBμV/m)
(dB)
4960.031
43.01
7.12
50.13
74
-23.87
4960.031
40.16
7.12
47.28
54
-6.72
AVG
7440.062
42.91
9.84
52.75
74
-21.25
peak
7440.062
38.66
9.84
48.5
54
-5.5
AVG
Value Type
peak
Remark:
Factor = Antenna Factor + Cable Loss – Pre-amplifier.
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative
Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 3
Antenna
Vertical
Frequency
Meter Reading
Factor
Emission Level
Limits
Margin
(MHz)
(dBμV)
(dB)
(dBμV/m)
(dBμV/m)
(dB)
4960.031
44.14
7.12
51.26
74
-22.74
4960.031
40.3
7.12
47.42
54
-6.58
AVG
7440.064
43.76
9.84
53.6
74
-20.4
peak
7440.064
39.19
9.84
49.03
54
-4.97
AVG
Value Type
peak
Remark:
Factor = Antenna Factor + Cable Loss – Pre-amplifier.
RESULT: PASS
Note:
Other emissions from 1G to 25 GHz are considered as ambient noise. No recording in the test
report.
Factor = Antenna Factor + Cable loss - Amplifier gain, Over=Measure-Limit.
The “Factor” value can be calculated automatically by software of measurement system.
All test modes had been tested. The GFSK modulation is the worst case and recorded in the report.
Page 43 of 53
Report No.: HUAK180827900E
TEST RESULT FOR RESTRICTED BANDS REQUIREMENTS
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 1
Antenna
Horizontal
PK
AV
RESULT: PASS
Page 44 of 53
Report No.: HUAK180827900E
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 1
Antenna
Vertical
PK
AV
RESULT: PASS
Page 45 of 53
Report No.: HUAK180827900E
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 3
Antenna
Horizontal
PK
AV
RESULT: PASS
Page 46 of 53
Report No.: HUAK180827900E
EUT
Bluetooth FM Transmitter
Model Name
BH268A
Temperature
25°C
Relative Humidity
55.4%
Pressure
960hPa
Test Voltage
Normal Voltage
Test Mode
Mode 3
Antenna
Vertical
PK
AV
RESULT: PASS
Note: The factor had been edited in the “Input Correction” of the Spectrum Analyzer. So the Amplitude of
test plots is equal to Reading level plus the Factor in dB. Use the A dB(μV) to represent the Amplitude. Use
the F dB(μV/m) to represent the Field Strength. So A=F. All test modes had been pre-tested. The GFSK
modulation is the worst case and recorded in the report.
Page 47 of 53
Report No.: HUAK180827900E
7. Number of Hopping Frequency
7.1. Measurement Procedure
The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings:
1. Span: The frequency band of operation. Depending on the number of channels the device supports, it
may be necessary to divide the frequency range of operation across multiple spans, to allow the individual
channels to be clearly seen.
2. RBW: To identify clearly the individual channels, set the RBW to less than 30% of the channel spacing or
the 20 dB bandwidth, whichever is smaller.
3. VBW ≥ RBW. Sweep: Auto. Detector function: Peak. Trace: Max hold.
4. Allow the trace to stabilize.
7.2. Test Setup (Block Diagram of Configuration)
Same as described in section 4.2
7.3. Limits and Measurement Result
TOTAL NO. OF
HOPPING CHANNEL
LIMIT (NO. OF CH)
MEASUREMENT
(NO. OF CH)
>=15
79
TEST PLOT FOR NO. OF TOTAL CHANNELS
Note: The 8-DPSK modulation is the worst case and recorded in the report.
RESULT
PASS
Page 48 of 53
Report No.: HUAK180827900E
8. Time Of Occupancy (Dwell Time)
8.1. Measurement Procedure
The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings:
1. Span: Zero span, centered on a hopping channel.
2. RBW shall be≤channel spacing and where possible RBW should be set >> 1 / T, where T is the
expected dwell time per channel.
3. Sweep: As necessary to capture the entire dwell time per hopping channel; where possible use a video
trigger and trigger delay so that the transmitted signal starts a little to the right of the start of the plot. The
trigger level might need slight adjustment to prevent triggering when the system hops on an adjacent
channel; a second plot might be needed with a longer sweep time to show two successive hops on a
channel.
4. Detector function: Peak. Trace: Max hold.
5. Use the marker-delta function to determine the transmit time per hop.
6. Repeat the measurement using a longer sweep time to determine the number of hops over the period
specified in the requirements. The sweep time shall be equal to, or less than, the period specified in the
requirements. Determine the number of hops over the sweep time and calculate the total number of hops in
the period specified in the requirements, using the following equation:
(Number of hops in the period specified in the requirements) = (number of hops on spectrum analyzer) ×
(period specified in the requirements / analyzer sweep time)
7. The average time of occupancy is calculated from the transmit time per hop multiplied by the number of
hops in the period specified in the requirements.
8.2. Test Setup (Block Diagram of Configuration)
Same as described in section 4.2
8.3. Limits and Measurement Result
Channel
Time of Pulse
for DH5
(ms)
Number of hops in the period
specified in the requirements
Sweep Time
(ms)
Limit
(ms)
Low
2.879
26*4
299.416
400
Middle
2.879
28*4
322.448
400
High
2.879
27*4
310.932
400
Note: The 8-DPSK modulation is the worst case and recorded in the report.
Page 49 of 53
TEST PLOT OF LOW CHANNEL
Report No.: HUAK180827900E
Page 50 of 53
TEST PLOT OF MIDDLE CHANNEL
Report No.: HUAK180827900E
Page 51 of 53
TEST PLOT OF HIGH CHANNEL
Report No.: HUAK180827900E
Page 52 of 53
Report No.: HUAK180827900E
9. Frequency Separation
9.1. Measurement Procedure
The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings:
1. Span: Wide enough to capture the peaks of two adjacent channels.
2. RBW: Start with the RBW set to approximately 30% of the channel spacing; adjust as necessary to best
identify the center of each individual channel.
3. Video (or average) bandwidth (VBW) ≥ RBW.
4. Sweep: Auto. e) Detector function: Peak. f) Trace: Max hold. g) Allow the trace to stabilize.
Use the marker-delta function to determine the separation between the peaks of the adjacent channels.
9.2. Test Setup (Block Diagram of Configuration)
Same as described in section 4.2
9.3. Limits and Measurement Result
CHANNEL
CHANNEL
SEPARATION
LIMIT
KHz
KHz
RESULT
Pass
CH01-CH02
10001
>=25 KHz or 2/3 20 dB BW
TEST PLOT FOR FREQUENCY SEPARATION
Note: The 8-DPSK modulation is the worst case and recorded in the report.
Page 53 of 53
10. Test Setup Photos of the EUT
Report No.: HUAK180827900E
Download: BH268A Bluetooth FM Transmitter Test Report Measurement Report VTIN TECHNOLOGY
Mirror Download [FCC.gov]BH268A Bluetooth FM Transmitter Test Report Measurement Report VTIN TECHNOLOGY
Document ID3988423
Application ID6z+jTTBU9LVI2b7qSJ088w==
Document Description14_BH268A TestRpt_DSS, r2
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeTest Report
Display FormatAdobe Acrobat PDF - pdf
Filesize288.62kB (3607734 bits)
Date Submitted2018-09-03 00:00:00
Date Available2018-09-03 00:00:00
Creation Date2018-09-03 16:30:38
Producing SoftwareMicrosoft® Office Word 2007
Document Lastmod2018-09-03 16:30:38
Document TitleMeasurement Report
Document CreatorMicrosoft® Office Word 2007
Document Author: Kent

Source Exif Data [exif.tools]:
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File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Page Count                      : 53
Language                        : zh-CN
Tagged PDF                      : Yes
Title                           : Measurement Report
Author                          : Kent
Creator                         : Microsoft® Office Word 2007
Create Date                     : 2018:09:03 16:30:38+08:00
Modify Date                     : 2018:09:03 16:30:38+08:00
Producer                        : Microsoft® Office Word 2007