Test Report

FCC ID: SS3-CS785U1706

Test Report

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FCCID_3514638

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
DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................5
EUT EXERCISE SOFTWARE ........................................................................................................................................5
EQUIPMENT MODIFICATIONS ......................................................................................................................................5
LOCAL SUPPORT EQUIPMENT LIST AND DETAILS ......................................................................................................5
SUPPORT CABLE LIST AND DETAILS...........................................................................................................................6
CONFIGURATION OF TEST SETUP...............................................................................................................................6
SUMMARY OF TEST RESULTS ...............................................................................................................................7
FCC§15.107 - CONDUCTED EMISSIONS ..............................................................................................................8
EUT SETUP .................................................................................................................................................................8
EMI TEST RECEIVER SETUP ......................................................................................................................................8
TEST EQUIPMENT LIST AND DETAILS .........................................................................................................................9
TEST PROCEDURE ......................................................................................................................................................9
CORRECTED AMPLITUDE & MARGIN CALCULATION ...................................................................................................9
TEST DATA ................................................................................................................................................................10
FCC §15.109 - RADIATED SPURIOUS EMISSIONS ..........................................................................................15
EUT SETUP ...............................................................................................................................................................15
EMI TEST RECEIVER SETUP ....................................................................................................................................16
TEST PROCEDURE ....................................................................................................................................................16
TEST EQUIPMENT LIST AND DETAILS .......................................................................................................................17
CORRECTED AMPLITUDE & MARGIN CALCULATION .................................................................................................17
TEST DATA ................................................................................................................................................................18

Report No.: RDG170603002C Page 2 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

GENERAL INFORMATION

Product Description for Equipment Under Test (EUT)

The SZ DJI TECHNOLOGY CO., LTD’s product, model number: CS785U
(FCC ID: SS3-CS785U1706) (the "EUT") in this report was a CrystalSky(Ultra 7.85 inch), which
was measured approximately: 20.8 cm (L) x 14.8 cm (W) x 3.5 cm (H), rated input voltage: DC7.6V,
the battery can be removed to charge. The Highest operation frequency is 5825MHz.

*All measurement and test data in this report was gathered from final production sample, serial number:
170603002 (assigned by the BACL, Chengdu). It may have deviation from any other sample. The EUT
supplied by the applicant was received on 2017-06-03,and EUT conformed to test requirement.

Objective

This test report is prepared on behalf of SZ DJI TECHNOLOGY CO., LTD in accordance with Part
2, Subpart J, and Part 15-Subparts A and B of the Federal Communications Commission’s rules.

The objective of the manufacturer is to determine the compliance of EUT with FCC Rules Part 15 B
Class B.

Related Submittal(s)/Grant(s)

FCC Part 15C DTS and 15E NII submissions with FCC ID: SS3-CS785U1706.

Test Methodology

All measurements contained in this report were conducted with ANSI C63.4-2014, American National
Standard for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and
Electronic Equipment in the range of 9 kHz to 40 GHz.

All of the measurements detailed in this Test Report were performed by Bay Area Compliance
Laboratories Corp. (Chengdu).

The Bay Area Compliance Laboratories Corp. Chengdu’s measurement Uncertainties (calculated for a
k=2 Coverage Factor corresponding to approximately 95% Coverage) were as follows:

-For all of the AC Line Conducted Emissions Tests reported herein: ±3.17 dB.

-For of all of the direct Radiated Emissions Tests reported herein are:
30 MHz to 200 MHz: ±4.7 dB;
200 MHz to 1 GHz: ±6.0 dB;
1 GHz to 6 GHz: ±5.13dB; and,
6 GHz to 40 GHz: ±5.47dB.

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

Report No.: RDG170603002C Page 3 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Facility

The test site used by BACL to collect test data is located in the No.5040, Huilongwan Plaza, No.1,
Shawan Road, Jinniu District, Chengdu, Sichuan, 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.: RDG170603002C Page 4 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

SYSTEM TEST CONFIGURATION

Description of Test Configuration

The system was configured for testing in a typical fashion (as normally used by a typical user). The
test configured as below test modes:

1. Type C USB Downloading: in this test mode, the EUT transceiving with PC via type C USB
port, and playing with video.

2. Micro USB Downloading: in this test mode, the EUT transceiving with PC via Micro USB port,
and playing with video.

EUT Exercise Software

The software “winthrax.exe” was used during test.

Equipment Modifications

No modification was made to the EUT tested.

Local Support Equipment List and Details

Manufacturer Description Model Serial Number
IBM PC 8176 99Y7315
DELL Display 1 E157FPC 060229-11
ANTER Modem EGW802 0508350054-1B
Lenovo Keyboard KB-US19EB IMHYX011071016460
Lenovo Mouse MO-5013U IMJS011041409259
Kingston USB Disk 32GB /
PHILIPS Display 2 227E3L AU3A1140001077
Kinston TF Card 4GB /

Report No.: RDG170603002C Page 5 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

SUMMARY OF TEST RESULTS

FCC Rules Description of Test Results

§15.107 Conducted Emissions Compliance

§15.109 Radiated Emissions Compliance

Report No.: RDG170603002C Page 7 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Equipment List and Details

Serial Calibration Calibration
Manufacturer Description Model
Number Date Due Date
EMI Test
Rohde & Schwarz ESCS 30 836858/0016 2016-12-02 2017-12-01
Receiver
Rohde & Schwarz L.I.S.N. ENV216 100018 2016-12-02 2017-12-01
Rohde & Schwarz PULSE LIMITER ESH3Z2 DE14781 2016-10-31 2017-10-30
SOLAR 9252-50-24
L.I.S.N. 984413 2016-12-02 2017-12-01
ELECTRONICS -BNC
Unknown Conducted Cable Unknown NO.5 2016-11-10 2017-11-09
R&S Test Software EMC32 Version8.53.0 N/A N/A

* Statement of Traceability: BACL(Chengdu) attests that all of the calibrations on the equipment items
listed above were traceable to NIM or to another internationally recognized National Metrology Institute
(NMI), and were compliant with the NIST HB 150-2016 Normative Annex B “Implementation of
traceability policy in accredited laboratories”.

Test Procedure

During the conducted emission test, the monitor was connected to the outlet of the first LISN and
the other support equipments were connected to the outlet of the second LISN.

Maximizing procedure was performed on the six (6) highest emissions of the EUT.

All data was recorded in the Quasi-peak and average detection mode.

Corrected Amplitude & Margin Calculation
The basic equation is as follows:

VC = VR + AC + VDF

Herein,
VC: corrected voltage amplitude

VR: reading voltage amplitude

Ac: attenuation caused by cable loss

VDF: voltage division factor of AMN or ISN

The “Margin” column of the following data tables indicates the degree of compliance within the
applicable limit. For example, a margin of 7dB means the emission is 7dB below the maximum
limit. The equation for margin calculation is as follows:

Margin = Limit – Corrected Amplitude

Report No.: RDG170603002C Page 9 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Data

Environmental Conditions

Temperature: 26.7 °C
Relative Humidity: 62.8%
ATM Pressure: 100.1 kPa

The testing was performed by Lorin Bian on 2017-06-15.

Report No.: RDG170603002C Page 10 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Mode: Downloading (Type-C)

AC120V, 60Hz, Line:

80

70

Quasi-Peak Limit
60
Average Limit
50
Level in dBμ

40

30

20

10

0
150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M

Frequency in Hz

Frequency QuasiPeak Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
0.151200 43.8 9.000 L1 19.7 22.1 65.9 Compliance
0.163741 39.7 9.000 L1 19.7 25.6 65.3 Compliance
1.239175 36.1 9.000 L1 19.7 19.9 56.0 Compliance
1.289541 35.8 9.000 L1 19.7 20.2 56.0 Compliance
17.183363 41.0 9.000 L1 20.1 19.0 60.0 Compliance
17.739864 38.8 9.000 L1 20.1 21.2 60.0 Compliance

Frequency Average Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
1.190776 27.7 9.000 L1 19.7 18.3 46.0 Compliance
1.239175 28.6 9.000 L1 19.7 17.4 46.0 Compliance
1.289541 29.1 9.000 L1 19.7 16.9 46.0 Compliance
9.759114 26.4 9.000 L1 19.9 23.6 50.0 Compliance
17.320829 34.0 9.000 L1 20.1 16.0 50.0 Compliance
17.881783 33.1 9.000 L1 20.1 16.9 50.0 Compliance

Report No.: RDG170603002C Page 11 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

AC120V, 60Hz, Neutral:

80

70
Quasi-Peak Limit
60

Average Limit
50
Level in dBμ

40

30

20

10

0
150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M
Frequency in Hz

Frequency QuasiPeak Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
0.169044 38.3 9.000 N 19.7 26.7 65.0 Compliance
0.181612 39.7 9.000 N 19.7 24.7 64.4 Compliance
1.239175 36.2 9.000 N 19.6 19.8 56.0 Compliance
1.289541 35.3 9.000 N 19.6 20.7 56.0 Compliance
17.459396 39.1 9.000 N 19.9 20.9 60.0 Compliance
17.739864 38.4 9.000 N 19.9 21.6 60.0 Compliance

Frequency Average Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
0.879690 19.9 9.000 N 19.6 26.1 46.0 Compliance
1.239175 30.6 9.000 N 19.6 15.4 46.0 Compliance
1.289541 28.8 9.000 N 19.6 17.2 46.0 Compliance
11.910327 28.4 9.000 N 19.9 21.6 50.0 Compliance
17.046987 33.8 9.000 N 19.9 16.2 50.0 Compliance
17.739864 33.3 9.000 N 19.9 16.7 50.0 Compliance

Report No.: RDG170603002C Page 12 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Mode: Downloading (Micro USB)

AC120V, 60Hz, Line:

80

70

Quasi-Peak Limit
60
Average Limit
50
Level in dBμ

40

30

20

10

0
150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M

Frequency in Hz

Frequency QuasiPeak Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
0.171759 38.4 9.000 L1 19.7 26.5 64.9 Compliance
0.255827 30.3 9.000 L1 19.7 31.3 61.6 Compliance
1.239175 37.2 9.000 L1 19.7 18.8 56.0 Compliance
1.269154 32.2 9.000 L1 19.7 23.8 56.0 Compliance
17.320829 39.2 9.000 L1 20.1 20.8 60.0 Compliance
18.757459 37.0 9.000 L1 20.0 23.0 60.0 Compliance

Frequency Average Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
0.879690 21.1 9.000 L1 19.7 24.9 46.0 Compliance
0.952654 20.5 9.000 L1 19.7 25.5 46.0 Compliance
1.239175 30.4 9.000 L1 19.7 15.6 46.0 Compliance
1.289541 30.9 9.000 L1 19.7 15.1 46.0 Compliance
17.320829 34.5 9.000 L1 20.1 15.5 50.0 Compliance
18.314388 33.0 9.000 L1 20.1 17.0 50.0 Compliance

Report No.: RDG170603002C Page 13 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

AC120V, 60Hz, Neutral:

80

70
Quasi-Peak Limit
60

Average Limit
50
Level in dBμ

40

30

20

10

0
150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M
Frequency in Hz

Frequency QuasiPeak Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
0.150000 43.9 9.000 N 19.7 22.1 66.0 Compliance
0.259937 30.0 9.000 N 19.6 31.4 61.4 Compliance
1.239175 36.4 9.000 N 19.6 19.6 56.0 Compliance
1.289541 34.8 9.000 N 19.6 21.2 56.0 Compliance
17.183363 39.8 9.000 N 19.9 20.2 60.0 Compliance
18.024837 38.1 9.000 N 19.9 21.9 60.0 Compliance

Frequency Average Bandwidth Corr. Margin Limit
Line Comment
(MHz) (dBμV) (kHz) (dB) (dB) (dBμV)
0.879690 21.1 9.000 N 19.6 24.9 46.0 Compliance
0.952654 20.3 9.000 N 19.7 25.7 46.0 Compliance
1.239175 30.3 9.000 N 19.6 15.7 46.0 Compliance
1.289541 29.6 9.000 N 19.6 16.4 46.0 Compliance
17.320829 33.9 9.000 N 19.9 16.1 50.0 Compliance
17.739864 32.8 9.000 N 19.9 17.2 50.0 Compliance

Report No.: RDG170603002C Page 14 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

EMI Test Receiver Setup

The system was investigated from 30 MHz to 30 GHz.

During the radiated emission test, the EMI test receiver was 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
1 MHz 3 MHz / Peak
Above 1 GHz
1 MHz 10 Hz / AVG

Test Procedure
During the radiated emissions, the monitor was connected to the first AC floor outlet and the other
support equipments were connected to the second AC floor outlet.

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

The data was recorded in the Quasi-peak detection mode for below 1 GHz, peak and average
detection mode above 1 GHz.

Report No.: RDG170603002C Page 16 of 21

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 & EMI Test
ESCI 100028 2016-12-02 2017-12-01
Schwarz Receiver
Sunol Broadband
JB3 A121808 2016-04-10 2019-04-09
Sciences Antenna
Rohde & Spectrum
FSEM30 100018 2016-12-02 2017-12-01
Schwarz Analyzer
ETS Horn Antenna 3115 003-6076 2016-12-02 2017-12-01
Ducommun
Horn Antenna ARH-4223-02 1007726-0113024 2014-06-16 2017-06-15
Technologies
Mini-circuits Amplifier ZVA-183-S+ 771001215 2017-05-20 2018-05-19
Semi-Anechoic
EMCT 966 966-1 2015-04-24 2018-04-23
Chamber

Unknown RF Cable Unknown NO.1 2016-11-10 2017-11-09
(below 1GHz)

Unknown RF Cable Unknown NO.4 2016-11-10 2017-11-09
(below 1GHz)

Unknown RF Cable Unknown NO.2 2016-11-10 2017-11-09
(above 1GHz)
Ducommun
Horn Antenna ARH-2823-02 1007726-01 1312 2016-08-18 2017-08-18
Technolagies
Quinstar Amplifier QLW-18405536-JO 15964001032 2016-08-18 2017-08-18
Spectrum
Agilent 8564E 5943A01752 2016-08-18 2017-08-18
Analyzer

* Statement of Traceability: BACL(Chengdu) attests that all of the calibrations on the equipment items
listed above were traceable to NIM or to another internationally recognized National Metrology Institute
(NMI), and were compliant with the NIST HB 150-2016 Normative Annex B “Implementation of traceability
policy in accredited laboratories”.

Corrected Amplitude & Margin Calculation

The Corrected Amplitude is calculated by adding the Antenna Loss and Cable Loss, and
subtracting the Amplifier Gain from the Meter Reading. The basic equation is as follows:

Corrected Amplitude = Meter Reading + Antenna Loss + 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 7 dB means the emission is 7 dB below the limit. The
equation for margin calculation
is as follows:

Margin = Limit – Corrected Amplitude

Report No.: RDG170603002C Page 17 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Data

Environmental Conditions

Temperature: 27.3 °C
Relative Humidity: 51.2 %
ATM Pressure: 100.1 kPa

* The testing was performed by Lorin Bian on 2017-06-12.

Test Result: Compliance

Test Mode: Downloading (Type C USB)

1) Below 1GHz:

80

70

60
FCC Part 15 Class B Electric Field Strength 3m
50
Level in dBμV/

40

30

20

10

0
30M 50 60 80 100M 200 300 400 500 800 1G

Frequency in Hz

Frequency QuasiPeak Height Azimuth Corr. Margin Limit
Polarization
(MHz) (dBμV/m) (cm) (deg) (dB) (dB) (dBμV/m)

52.310000 33.8 100.0 V 180.0 -13.1 6.2 40.0
294.567500 40.1 100.0 H 118.0 -6.1 5.9 46.0
296.022500 42.6 100.0 H 109.0 -6.0 3.4 46.0
297.356250 41.8 100.0 H 118.0 -6.0 4.2 46.0
298.811250 42.0 100.0 H 118.0 -5.9 4.0 46.0
300.266250 41.2 100.0 H 100.0 -5.8 4.8 46.0

Report No.: RDG170603002C Page 18 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

2) 1-30GHz:

Frequency Receiver Rx Antenna Cable Amplifier Corrected
Limit Margin
Reading Polar Factor loss Gain Amplitude
(MHz) Detector (dB) (dB) (dBμV/m)
(dBμV) (H/V) (dB) (dBμV/m) (dB)
1140.281 44.47 PK H 23.16 2.17 26.68 43.12 74.00 30.88
1140.281 34.49 AV H 23.16 2.17 26.68 33.14 54.00 20.86
1400.802 45.62 PK H 23.84 2.53 26.43 45.56 74.00 28.44
1400.802 34.85 AV H 23.84 2.53 26.43 34.79 54.00 19.21
1941.884 42.9 PK H 24.81 3.01 26.76 43.96 74.00 30.04
1941.884 32.52 AV H 24.81 3.01 26.76 33.58 54.00 20.42
1380.762 51.8 PK V 23.79 2.51 26.44 51.66 74.00 22.34
1380.762 37.72 AV V 23.79 2.51 26.44 37.58 54.00 16.42
1631.263 45.72 PK V 24.31 2.77 26.46 46.34 74.00 27.66
1631.263 34.84 AV V 24.31 2.77 26.46 35.46 54.00 18.54
2052.104 43.92 PK V 24.72 3.04 26.83 44.85 74.00 29.15
2052.104 32.89 AV V 24.72 3.04 26.83 33.82 54.00 20.18

Report No.: RDG170603002C Page 19 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

Test Mode: Downloading (Micro USB)

1) Below 1GHz:

80

70

60
FCC Part 15 Class B Electric Field Strength 3m
50
Level in dBμV/

40

30

20

10

0
30M 50 60 80 100M 200 300 400 500 800 1G

Frequency in Hz

Frequency QuasiPeak Height Azimuth Corr. Margin Limit
Polarization
(MHz) (dBμV/m) (cm) (deg) (dB) (dB) (dBμV/m)

198.295000 39.1 100.0 H 130.0 -7.6 4.4 43.5
293.112500 40.6 100.0 H 101.0 -6.2 5.4 46.0
297.356250 41.6 100.0 H 130.0 -6.0 4.4 46.0
298.690000 41.9 100.0 H 120.0 -5.9 4.1 46.0
300.145000 41.6 100.0 H 130.0 -5.8 4.4 46.0
301.478750 41.7 100.0 H 101.0 -5.8 4.3 46.0

Report No.: RDG170603002C Page 20 of 21

Bay Area Compliance Laboratories Corp. (Chengdu)

2) 1-30GHz:

Frequency Receiver Rx Antenna Cable Amplifier Corrected
Limit Margin
Reading Polar Factor loss Gain Amplitude
(MHz) Detector (dB) (dB) (dBμV/m)
(dBμV) (H/V) (dB) (dBμV/m) (dB)
1140.281 44.4 PK H 23.16 2.17 26.68 43.05 74.00 30.95
1140.281 32.82 AV H 23.16 2.17 26.68 31.47 54.00 22.53
1320.641 46.31 PK H 23.63 2.42 26.50 45.86 74.00 28.14
1320.641 33.6 AV H 23.63 2.42 26.50 33.15 54.00 20.85
1901.804 44.48 PK H 24.74 2.98 26.72 45.48 74.00 28.52
1901.804 32.82 AV H 24.74 2.98 26.72 33.82 54.00 20.18
1380.762 50.42 PK V 23.79 2.51 26.44 50.28 74.00 23.72
1380.762 38.56 AV V 23.79 2.51 26.44 38.42 54.00 15.58
1631.263 45.22 PK V 24.31 2.77 26.46 45.84 74.00 28.16
1631.263 33.96 AV V 24.31 2.77 26.46 34.58 54.00 19.42
2062.124 43.26 PK V 24.69 3.04 26.83 44.16 74.00 29.84
2062.124 31.53 AV V 24.69 3.04 26.83 32.43 54.00 21.57

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

Report No.: RDG170603002C Page 21 of 21

Document Created: 2017-07-14 19:40:16
Document Modified: 2017-07-14 19:40:16

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