Test Report

FCC ID: 2ABYNTT350

Test Report

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FCCID_3263882

Bay Area Compliance Laboratories Corp. (Chengdu)

TABLE OF CONTENTS

GENERAL INFORMATION ....................................................................................................................... 3
PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ...................................................................... 3
OBJECTIVE .............................................................................................................................................. 3
RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................ 3
TEST METHODOLOGY ............................................................................................................................... 3
TEST FACILITY ......................................................................................................................................... 4
SYSTEM TEST CONFIGURATION ........................................................................................................... 5
JUSTIFICATION ......................................................................................................................................... 5
EUT EXERCISE SOFTWARE ...................................................................................................................... 5
EQUIPMENT MODIFICATIONS ..................................................................................................................... 5
SUPPORT EQUIPMENT LIST AND DETAILS.................................................................................................... 6
BLOCK DIAGRAM OF TEST SETUP .............................................................................................................. 6
SUMMARY OF TEST RESULTS ............................................................................................................... 7
FCC§15.203 - ANTENNA REQUIREMENT ............................................................................................... 8
APPLICABLE STANDARD ............................................................................................................................ 8
ANTENNA CONNECTOR CONSTRUCTION ..................................................................................................... 8
FCC§15.205, §15.209&§15.249- RADIATED EMISSIONS ........................................................................ 9
APPLICABLE STANDARD ............................................................................................................................ 9
MEASUREMENT UNCERTAINTY .................................................................................................................. 9
EUT SETUP .......................................................................................................................................... 10
TEST EQUIPMENT SETUP ........................................................................................................................ 11
TEST PROCEDURE ................................................................................................................................. 11
CORRECTED AMPLITUDE & MARGIN CALCULATION .................................................................................... 11
TEST EQUIPMENT LIST AND DETAILS ........................................................................................................ 12
TEST RESULTS SUMMARY ....................................................................................................................... 12
TEST DATA ........................................................................................................................................... 12
FCC §15.215(C) – 20 DB BANDWIDTH TESTING .................................................................................. 14
APPLICABLE STANDARD .......................................................................................................................... 14
TEST PROCEDURE ................................................................................................................................. 14
TEST EQUIPMENT LIST AND DETAILS ........................................................................................................ 14
TEST DATA ........................................................................................................................................... 14

Report No.: RDG161214005B Page 2 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

GENERAL INFORMATION
Product Description for Equipment under Test (EUT)
The GODOX PHOTO EQUIPMENT CO.LTD’s product, model number: TT350s
(FCC ID: 2ABYNTT350) (the "EUT") in this report was a Thinklite TTL Camera Flash, which
was measured approximately: 14.2 cm (L) x 6.2 cm (W) x 3.9 cm (H), rated input voltage: DC 3V
from battery.

Note: The series product, model TT350s, TT350c, TT350n are electrically identical, the difference between
them is the different hotshoe control function, we selected TT350s for fully testing, the details was
explained in the declaration letter.

*All measurement and test data in this report was gathered from final production sample, serial number:
161214005 (assigned by the BACL, Chengdu). It may have deviation from any other sample. The EUT
supplied by the applicant was received on 2016-12-15, and EUT conformed to test requirement.

Objective
This type approval report is prepared on behalf of GODOX PHOTO EQUIPMENT CO.LTD in
accordance with Part 2-Subpart J, and Part 15-Subparts A, B and C of the Federal
Communication Commissions rules.
The tests were performed in order to determine compliance with FCC Part 15, Subpart C, and
section 15.203, 15.205, 15.209 and 15.249 rules.

Related Submittal(s)/Grant(s)
No related submittal(s)/grant(s).

Test Methodology
All measurements contained in this report were conducted with ANSI C63.10-2013, American
National Standard of Procedures for Compliance Testing of Unlicensed Wireless Devices.

The uncertainty of any RF tests which use conducted method measurement is ±3.17 dB, the
uncertainty of any radiation on emissions measurement is:

30M~200MHz: ±4.7 dB;
200M~1GHz: ±6.0 dB;
1G~6GHz: ±5.13dB;
6G~25GHz: ±5.47dB;

And the uncertainty will not be taken into consideration for all test data recorded in the report.

Report No.: RDG161214005B Page 3 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Facility
The test site used by BACL to collect test data is located in the 5040, HuiLongWan Plaza, No. 1,
ShaWan Road, JinNiu District, ChengDu, China.

Test site at BACL has been fully described in reports submitted to the Federal Communication
Commission (FCC). The details of these reports have been found to be in compliance with the
requirements of Section 2.948 of the FCC Rules on April 24, 2015. The facility also complies
with the radiated and AC line conducted test site criteria set forth in ANSI C63.4-2014.

The Federal Communications Commission has the reports on file and is listed under FCC
Registration No.: 560332. The test site has been approved by the FCC for public use and is listed
in the FCC Public Access Link (PAL) database.

Report No.: RDG161214005B Page 4 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

SYSTEM TEST CONFIGURATION
Justification
The system was configured for testing in Engineering Mode, which was provided by the
manufacturer.
The Engineering mode was switched channel by keys.
The system was configured for testing in a testing mode which was selected by manufacturer.
16 channels are provided for testing: channel 1, 8 and 16 were selected to test.

Frequency Frequency
Channel Channel
(MHz) (MHz)
1 2413 9 2426
2 2414.5 10 2428
3 2416 11 2429.5
4 2418 12 2431
5 2419.5 13 2433
6 2421 14 2434.5
7 2423 15 2436
8 2424.5 16 2438

And channel 1,8, 16 was chose for testing.

EUT Exercise Software
No software was used during testing.

Equipment Modifications
No modifications were made to the EUT.

Report No.: RDG161214005B Page 5 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

SUMMARY OF TEST RESULTS

FCC Rules Description of Test Result

§15.203 Antenna Requirement Compliance

§15.207(a) Conduction Emissions Not Applicable

15.205, §15.209, §15.249 Radiated Emissions Compliance

§15.215 (c) 20 dB Bandwidth Compliance

Note: It is battery operated equipment.

Report No.: RDG161214005B Page 7 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

FCC§15.203 - ANTENNA REQUIREMENT
Applicable Standard
For intentional device, according to §15.203, an intentional radiator shall be designed to ensure
that no antenna other than that furnished by the responsible party shall be used.

Antenna Connector Construction
The EUT has an internal antenna, the antenna gain is 0dBi, fulfill the requirement of this section.
Please refer to the EUT photos.
Result: Compliant.

Report No.: RDG161214005B Page 8 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

FCC§15.205, §15.209&§15.249- RADIATED EMISSIONS
Applicable Standard

As per FCC§15.249 (a), except as provided in paragraph (b) of this section, the field strength of
emissions from intentional radiators operated within these frequency bands shall comply with the
following:

Fundamental Field strength of fundamental Field strength of harmonics
frequency (millivolts/meter) (microvolts/meter)

902–928 MHz 50 500

2400–2483.5 MHz 50 500

5725–5875 MHz 50 500

24.0–24.25 GHz 250 2500

As per FCC§15.249 (c), Field strength limits are specified at a distance of 3 meters.

(d) Emissions radiated outside of the specified frequency bands, except for harmonics, shall be
attenuated by at least 50 dB below the level of the fundamental or to the general radiated
emission limits in §15.209, whichever is the lesser attenuation.

Measurement Uncertainty
Compliance or non- compliance with a disturbance limit shall be determined in the following
manner:

If Ulab is less than or equal to Ucispr of Table 1, then:
–compliance is deemed to occur if no measured disturbance level exceeds the disturbance limit;
–non - compliance is deemed to occur if any measured disturbance level exceeds the
disturbance limit.
If Ulab is greater than Ucispr of Table 1, then:
–compliance is deemed to occur if no measured disturbance level, increased by (Ulab − Ucispr),
exceeds the disturbance limit;
–non - compliance is deemed to occur if any measured disturbance level, increased by (Ulab −
Ucispr), exceeds the disturbance limit.

Based on CISPR 16-4-2-2011, measurement uncertainty of radiated emission at a distance of
3m at Bay Area Compliance Laboratories Corp. (Chengdu) is:
30M~200MHz: ±4.7 dB;
200M~1GHz: ±6.0 dB;
1G~6GHz: ±5.13dB;
6G~25GHz: ±5.47 dB;

Report No.: RDG161214005B Page 9 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Equipment Setup
The system was investigated from 30 MHz to 25 GHz.
During the radiated emission test, the EMI test receiver & Spectrum Analyzer Setup were set with
the following configurations:

Frequency Range RBW Video B/W IF B/W Detector
30 MHz – 1000 MHz 120 kHz 300 kHz 120 kHz QP
1MHz 3 MHz / PK
Above 1 GHz
1MHz 10 Hz / AV

Test Procedure
Maximizing procedure was performed on the highest emissions to ensure that the EUT complied
with all installation combinations.

All data was recorded in the Quasi-peak detection mode from 30 MHz to 1GHz, peak and
average detection mode above 1 GHz.

Corrected Amplitude & Margin Calculation
The Corrected Amplitude is calculated by adding the Antenna Factor and Cable Loss, and
subtracting the Amplifier Gain from the Meter Reading. The basic equation is as follows:
Corrected Amplitude = Meter Reading + Antenna Factor + Cable Loss - Amplifier Gain
The “Margin” column of the following data tables indicates the degree of compliance with the
applicable limit. For example, a margin of 7dB means the emission is 7dB below the limit. The
equation for margin calculation is as follows:
Margin = Limit –Corrected Amplitude

Report No.: RDG161214005B Page 11 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Equipment List and Details

Serial Calibration Calibration
Manufacturer Description Model
Number Date Due Date
Agilent Amplifier 8447D 2944A10442 2016-12-02 2017-12-01
Rohde & Schwarz EMI Test Receiver ESCI 100028 2016-12-02 2017-12-01
Broadband
Sunol Sciences JB3 A101808 2016-04-10 2019-04-09
Antenna
Spectrum
Rohde & Schwarz FSEM30 100018 2016-12-02 2017-12-01
Analyzer
ETS Horn Antenna 3115 003-6076 2016-12-02 2017-12-01
Ducommun 1007726-
Horn Antenna ARH-4223-02 2014-06-16 2017-06-15
Technologies 0113024
Mini-circuits Amplifier ZVA-183-S+ 771001215 2016-05-20 2017-05-19
HP Amplifier 8449B 3008A00277 2016-12-02 2017-12-01
Semi-Anechoic
EMCT 966 N/A 2015-04-24 2018-04-23
Chamber
RF Cable
N/A NO.1 N/A 2016-11-10 2017-11-09
(below 1GHz)
RF Cable
N/A NO.4 N/A 2016-11-10 2017-11-09
(below 1GHz)
RF Cable
N/A NO.2 N/A 2016-11-10 2017-11-09
(above 1GHz)

* Statement of Traceability: BACL (Chengdu) attested that all calibrations have been performed,
traceable to National Primary Standards and International System of Units (SI).

Test Results Summary
According to the data in the following table, the EUT complied with the FCC Part 15.209 &15.205
& 15.249.

Test Data
Environmental Conditions
o
Temperature: 24.6 C
Relative Humidity: 42 %
ATM Pressure: 101.1 kPa

The testing was performed by Lorin Bian on 2016-12-26.

Test Mode: Transmitting

Report No.: RDG161214005B Page 12 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

30MHz-25GHz:

Receiver Rx Antenna Cable Amplifier Corrected
Frequency Limit Margin
Reading Polar Factor loss Gain Amplitude
(MHz) Detector (dBμV/m) (dB)
(dBμV) (H/V) (dB(1/m)) (dB) (dB) (dBμV/m)
frequency: 2413 MHz
2413 55.76 PK H 23.50 3.00 0.00 82.26 114.00 31.74
2413 43.37 AV H 23.50 3.00 0.00 69.87 94.00 24.13
2413 58.82 PK V 23.50 3.00 0.00 85.32 114.00 28.68
2413 45.69 AV V 23.50 3.00 0.00 72.19 94.00 21.81
2400 24.27 PK V 23.54 3.00 0.00 50.81 74.00 23.19
2400 12.92 AV V 23.54 3.00 0.00 39.46 54.00 14.54
4826 39.46 PK V 30.84 5.11 26.87 48.54 74.00 25.46
4826 26.75 AV V 30.84 5.11 26.87 35.83 54.00 18.17
7239 34.02 PK V 34.78 6.18 26.37 48.61 74.00 25.39
7239 22.73 AV V 34.78 6.18 26.37 37.32 54.00 16.68
2102 33.55 PK V 24.55 3.04 26.83 34.31 74.00 39.69
2102 21.09 AV V 24.55 3.04 26.83 21.85 54.00 32.15
468.44 42.25 QP V 17.74 1.54 28.63 32.90 46.00 13.10
519.85 40 QP V 18.30 1.66 28.82 31.14 46.00 14.86
frequency: 2424.5 MHz
2424.5 56.41 PK H 23.46 3.00 0.00 82.87 114.00 31.13
2424.5 44.27 AV H 23.46 3.00 0.00 70.73 94.00 23.27
2424.5 59.48 PK V 23.46 3.00 0.00 85.94 114.00 28.06
2424.5 46.54 AV V 23.46 3.00 0.00 73.00 94.00 21.00
4849 39.81 PK V 30.92 5.10 26.87 48.96 74.00 25.04
4849 27.23 AV V 30.92 5.10 26.87 36.38 54.00 17.62
7273.5 34.08 PK V 34.85 6.20 26.38 48.75 74.00 25.25
7273.5 22.79 AV V 34.85 6.20 26.38 37.46 54.00 16.54
2145 33.14 PK V 24.41 3.03 26.84 33.74 74.00 40.26
2145 20.85 AV V 24.41 3.03 26.84 21.45 54.00 32.55
3012 32.55 PK V 24.27 3.45 26.41 33.86 74.00 40.14
3012 20.13 AV V 24.27 3.45 26.41 21.44 54.00 32.56
468.44 42.22 QP V 17.74 1.54 28.63 32.87 46.00 13.13
519.85 40.29 QP V 18.30 1.66 28.82 31.43 46.00 14.57
frequency: 2438 MHz
2438 55.71 PK H 23.41 3.00 0.00 82.12 114.00 31.88
2438 43.86 AV H 23.41 3.00 0.00 70.27 94.00 23.73
2438 59.25 PK V 23.41 3.00 0.00 85.66 114.00 28.34
2438 45.56 AV V 23.41 3.00 0.00 71.97 94.00 22.03
2483.5 25.59 PK V 23.26 2.99 0.00 51.84 74.00 22.16
2483.5 13.25 AV V 23.26 2.99 0.00 39.50 54.00 14.50
4876 39.22 PK V 31.00 5.09 26.87 48.44 74.00 25.56
4876 27.03 AV V 31.00 5.09 26.87 36.25 54.00 17.75
7314 34.47 PK V 34.93 6.21 26.40 49.21 74.00 24.79
7314 22.34 AV V 34.93 6.21 26.40 37.08 54.00 16.92
3045 33.48 PK V 24.45 3.50 26.43 35.00 74.00 39.00
3045 21.37 AV V 24.45 3.50 26.43 22.89 54.00 31.11
468.44 42.39 QP V 17.74 1.54 28.63 33.04 46.00 12.96
519.85 41.08 QP V 18.30 1.66 28.82 32.22 46.00 13.78

Report No.: RDG161214005B Page 13 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

FCC §15.215(c) – 20 dB BANDWIDTH TESTING
Applicable Standard
Intentional radiators operating under the alternative provisions to the general emission limits, as
contained in §§ 15.217 through 15.257 and in Subpart E of this part, must be designed to ensure
that the 20 dB bandwidth of the emission, or whatever bandwidth may otherwise be specified in
the specific rule section under which the equipment operates, is contained within the frequency
band designated in the rule section under which the equipment is operated.

Test Procedure
1. Check the calibration of the measuring instrument using either an internal calibrator or a
known signal from an external generator.
2. Position the EUT on the test table without connection to measurement instrument. Turn on
the EUT. Then set it to any one convenient frequency within its operating range. Set a
reference level on the measuring instrument equal to the highest peak value.
3. Measure the frequency difference of two frequencies that were attenuated 20 dB from the
reference level. Record the frequency difference as the emission bandwidth.
4. Repeat above procedures until all frequencies measured were complete.

Test Equipment List and Details

Serial Calibration Calibration
Manufacturer Description Model
Number Date Due Date
Rohde &
Signal Analyzer FSIQ26 831929/005 2016-09-21 2017-09-20
Schwarz
N/A RF Cable N/A N/A Each Time /

* Statement of Traceability: BACL (Chengdu) attested that all calibrations have been performed,
traceable to National Primary Standards and International System of Units (SI).

Test Data
Environmental Conditions
o
Temperature: 26.3 C
Relative Humidity: 34 %
ATM Pressure: 101.8 kPa

The testing was performed by Lorin Bian on 2016-12-28.

Test Result: Compliant.
Please refer to following tables and plots

Report No.: RDG161214005B Page 14 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Mode: Transmitting

Frequency 20 dB Bandwidth
Channel
(MHz) (MHz)
Low 2413 0.79
Middle 2424.5 0.90
High 2438 0.81

Low Channel
Delta 1 [T1] RBW 30 kHz RF Att 30 dB
Ref Lvl 1.22 dB VBW 100 kHz
10 dBm 787.57515031 kHz SWT 8.5 ms Unit dBm
10
0.5 dB Offset 1 [T1] -23.41 dBm
A
2.41259419 GHz
0
1 [T1] 1.22 dB
D1 -3.11 dBm
787.57515031 kHz
-10 OPB 793.58717435 kHz
T1 [T1] -22.70 dBm
2.41260020 GHz
-20 T1 1
1 T2 [T1] -24.77 dBm
T2
1MAX D2
D -23.11 dBm 1MA
2.41339379 GHz
-30

-40

-50

-60

-70

-80

-90
Center 2.413 GHz 300 kHz/ Span 3 MHz

Date: 28.DEC.2016 09:49:57

Report No.: RDG161214005B Page 15 of 16

Bay Area Compliance Laboratories Corp. (Chengdu)

Middle Channel
Delta 1 [T1] RBW 30 kHz RF Att 30 dB
Ref Lvl -0.41 dB VBW 100 kHz
10 dBm 895.79158317 kHz SWT 8.5 ms Unit dBm
10
0.5 dB Offset 1 [T1] -23.91 dBm
A
2.42399800 GHz
0
1 [T1] -0.41 dB
D1 -3.49 dBm
895.79158317 kHz
-10 OPB 913.82765531 kHz
T1 [T1] -26.01 dBm
2.42406413 GHz
-20
1 1 T2 [T1] -25.70 dBm
1MAX D2
D -23.49 dBm T1 T2 1MA
2.42497796 GHz
-30

-40

-50

-60

-70

-80

-90
Center 2.4245 GHz 300 kHz/ Span 3 MHz

Date: 28.DEC.2016 09:53:32

High Channel
Delta 1 [T1] RBW 30 kHz RF Att 30 dB
Ref Lvl 0.96 dB VBW 100 kHz
10 dBm 811.62324650 kHz SWT 8.5 ms Unit dBm
10
0.5 dB Offset 1 [T1] -23.88 dBm
A
2.43757615 GHz
0
1 [T1] 0.96 dB
D1 -3.49 dBm
811.62324650 kHz
-10 OPB 997.99599198 kHz
T1 [T1] -26.04 dBm
2.43750401 GHz
-20 1
1 T2 [T1] -25.65 dBm
1MAX D2
D -23.49 dBm T1 T2 1MA
2.43850200 GHz
-30

-40

-50

-60

-70

-80

-90
Center 2.438 GHz 300 kHz/ Span 3 MHz

Date: 28.DEC.2016 09:57:36

***** END OF REPORT *****

Report No.: RDG161214005B Page 16 of 16

Document Created: 2017-01-13 20:33:38
Document Modified: 2017-01-13 20:33:38

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