Test Report

FCC ID: YZZ-GXW4216

Test Report

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FCCID_4201348

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

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
MEASUREMENT UNCERTAINTY ....................................................................................................................................3
TEST FACILITY .............................................................................................................................................................4
SYSTEM TEST CONFIGURATION ..........................................................................................................................5
DESCRIPTION OF TEST CONFIGURATION ......................................................................................................................5
EUT EXERCISE SOFTWARE ..........................................................................................................................................5
SPECIAL ACCESSORIES .................................................................................................................................................5
EQUIPMENT MODIFICATIONS .......................................................................................................................................5
SUPPORT EQUIPMENT LIST AND DETAILS ....................................................................................................................5
EXTERNAL I/O CABLE..................................................................................................................................................5
BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................6
SUMMARY OF TEST RESULTS ...............................................................................................................................7

TEST EQUIPMENT LIST ...........................................................................................................................................8
FCC §15.107 – AC LINE CONDUCTED EMISSIONS .............................................................................................9
APPLICABLE STANDARD ..............................................................................................................................................9
EUT SETUP ..................................................................................................................................................................9
EMI TEST RECEIVER SETUP .........................................................................................................................................9
TEST PROCEDURE ........................................................................................................................................................9
CORRECTED FACTOR & MARGIN CALCULATION .......................................................................................................10
TEST RESULTS SUMMARY ..........................................................................................................................................10
TEST DATA ................................................................................................................................................................10
FCC §15.109 - RADIATED SPURIOUS EMISSIONS ............................................................................................15
APPLICABLE STANDARD ............................................................................................................................................15
EUT SETUP ................................................................................................................................................................15
EMI TEST RECEIVER SETUP .......................................................................................................................................16
TEST PROCEDURE ......................................................................................................................................................16
CORRECTED AMPLITUDE & MARGIN CALCULATION .................................................................................................16
TEST RESULTS SUMMARY ..........................................................................................................................................16
TEST DATA ................................................................................................................................................................17

FCC Part 15B, Class B Page 2 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

GENERAL INFORMATION
Product Description for Equipment under Test (EUT)

Product Analog IP Gateway
Tested Model GXW4216
Voltage Range DC 12.0V from adapter
Measure 44.0 cm (L) *18.5 cm (W) *4.4 cm (H)
Highest operating frequency 400 MHz
Date of Test Jan 16, 2019~ Jan 23, 2019
Sample serial number 181225006
Received date 2018-12-25
Sample/EUT Status Good condition
Model: NBS65A120500M3
Adapter information Input: AC 100-240V, 50/60Hz, 1.5 A
Output: DC 12.0V, 5.0 A

Objective
This test report is prepared on behalf of Grandstream Networks, Inc. in accordance with Part 2-Subpart J,
Part 15-Subparts A, B of the Federal Communication Commissions rules.

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

Related Submittal(s)/Grant(s)
No Related Submittal(s)/Grant(s).

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 emissions measurement was performed at Bay Area Compliance Laboratories Corp. (Shenzhen). The
radiated testing was performed at an antenna-to-EUT distance of 3 meters.

Measurement Uncertainty

Parameter uncertainty
Conducted Emissions ±1.95dB

Radiated Below 1GHz ±4.75dB
Emissions Above 1GHz ±4.88dB

FCC Part 15B, Class B Page 3 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Test Facility
The Test site used by Bay Area Compliance Laboratories Corp. (Shenzhen) to collect test data is located
on the 6/F., West Wing, Third Phase of Wanli Industrial Building, Shihua Road, Futian Free Trade Zone,
Shenzhen, Guangdong, China.

The test site has been approved by the FCC under the KDB 974614 D01 and is listed in the FCC Public
Access Link (PAL) database, FCC Registration No.: 342867, the FCC Designation No.: CN1221.

The test site has been registered with ISED Canada under ISED Canada Registration Number 3062B.

FCC Part 15B, Class B Page 4 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

SYSTEM TEST CONFIGURATION
Description of Test Configuration
The system was configured for testing in a manufacturer testing fashion.

EUT Exercise Software
No exercise software was used.

Special Accessories
No special accessory.

Equipment Modifications
No modification was made to the EUT tested.

Support Equipment List and Details

Manufacturer Description Model Serial Number

ASKPCB FXS test tool E239218 N/A
Sagem Router F@ST 1704N 3c81d839027c

External I/O Cable

Cable Description Length (m) From/Port To

Unshielded detachable AC cable 1.0 Adapter LISN

Unshielded un-detachable DC cable 0.95 Adapter EUT

Unshielded detachable RJ45 cable 10.0 EUT Router

Unshielded detachable RJ11 cable 0.75 EUT FXS test tool

FCC Part 15B, Class B Page 5 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Block Diagram of Test Setup
RJ11:

LISN
Router
FXS Test EUT Adapter
Tool 10cm 10cm

1.0 meter
Non-Conductive Table
80 cm above Ground Plane

1.5 meters

50-pin Telco connectors:

LISN

Router
EUT Adapter
FXS Test 10cm
Tool
1.0 meter

Non-Conductive Table
80 cm above Ground Plane

1.5 meters

FCC Part 15B, Class B Page 6 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

SUMMARY OF TEST RESULTS

FCC Rules Description of Test Results

§15.107 AC Line Conducted Emissions Compliance

§15.109 Radiated Spurious Emissions Compliance

FCC Part 15B, Class B Page 7 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

TEST EQUIPMENT LIST

Serial Calibration Calibration
Manufacturer Description Model
Number Date Due Date
AC Line Conducted Emission Test
Rohde & Schwarz EMI Test Receiver ESCS30 100176 2018-07-11 2019-07-11
3560.6650.12-
Rohde & Schwarz LISN ENV216 2018-12-21 2019-12-21
101613-Yb
Rohde & Schwarz Transient Limiter ESH3Z2 DE25985 2018-11-12 2019-05-12

Rohde & Schwarz CE Test software EMC 32 V8.53.0 NCR NCR
Conducted Emission UF A210B-1-
Unknown 78652 2018-11-12 2019-05-12
Cable 0720-504504

Radiated Emission Test
A.H.System Horn Antenna SAS-200/571 135 2018-09-01 2021-08-31
Rohde & Schwarz Signal Analyzer FSEM 845987/005 2018-06-23 2019-06-23
Sunol Sciences Broadband Antenna JB1 A040904-1 2017-12-22 2020-12-21
COM-POWER Pre-amplifier PA-122 181919 2018-11-12 2019-05-12
Sonoma instrument Amplifier 310N 186238 2018-11-12 2019-05-12
Rohde & Schwarz EMI Test Receiver ESCI 101120 2019-01-11 2020-01-11
Ducommun UFA147A- MFR64639
RF Cable 2018-07-11 2021-07-10
technologies 2362-100100 231029-003

Ducommun
RF Cable 104PEA 218124002 2018-11-12 2019-05-12
technologies
Ducommun
RF Cable RG-214 1 2018-11-12 2019-05-12
technologies
Ducommun
RF Cable RG-214 2 2018-11-12 2019-05-12
technologies

Rohde & Schwarz Auto test software EMC 32 V9.10 NCR NCR

* Statement of Traceability: Bay Area Compliance Laboratories Corp. (Shenzhen) attests that all calibrations have
been performed in accordance to requirements that traceable to National Primary Standards and International System
of Units (SI).

FCC Part 15B, Class B Page 8 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Corrected Factor & Margin Calculation
The Corrected factor is calculated by adding LISN/ISN VDF (Voltage Division Factor), Cable Loss and
Transient Limiter Attenuation. The basic equation is as follows:
Correction Factor = LISN VDF + Cable Loss + Transient Limiter Attenuation
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

Test Results Summary
According to the recorded data in following table, the EUT complied with the FCC Part 15.107,

Refer to CISPR16-4-2:2011 and CISPR 16-4-1:2009, the measured level is in compliance with the limit if

Lm + U(Lm) ≤ Llim + Ucispr

In BACL., U(Lm) is less than Ucispr, if Lm is less than Llim, it implies that the EUT complies with the limit.

Test Data
Environmental Conditions

Temperature: 24 ℃
Relative Humidity: 60 %
ATM Pressure: 101.0 kPa

The testing was performed by Joson Xiao on 2019-01-16.

EUT Operation Mode: Full load

FCC Part 15B, Class B Page 10 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

RJ11 Port:
AC 120V/60 Hz, Line

90

80

70

QP
60
Level in dBu

AV
50

40

30

20

10

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

Corrected Correction
Frequency Limit Margin Detector
Amplitude Factor
(MHz) (dBμV) (dB) (PK/Ave./QP)
(dBμV) (dB)
0.158000 50.0 19.8 65.6 15.6 QP
0.514000 38.7 19.8 56.0 17.3 QP
1.130000 52.0 19.8 56.0 4.0 QP
1.598000 51.0 19.9 56.0 5.0 QP
2.414000 47.4 19.9 56.0 8.6 QP
3.782000 41.6 20.0 56.0 14.4 QP
0.158000 35.8 19.8 55.6 19.8 Ave.
0.514000 30.9 19.8 46.0 15.1 Ave.
1.130000 40.6 19.8 46.0 5.4 Ave.
1.598000 39.6 19.9 46.0 6.4 Ave.
2.414000 37.8 19.9 46.0 8.2 Ave.
3.782000 32.4 20.0 46.0 13.6 Ave.

FCC Part 15B, Class B Page 11 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

AC 120V/60 Hz, Neutral

90

80

70

QP
60
Level in dBu

AV
50

40

30

20

10

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

Corrected Correction
Frequency Limit Margin Detector
Amplitude Factor
(MHz) (dBμV) (dB) (PK/Ave./QP)
(dBμV) (dB)
0.154000 49.7 19.8 65.8 16.1 QP
0.558000 37.3 19.7 56.0 18.7 QP
1.154000 55.5 19.8 56.0 0.5 QP
1.506000 53.9 19.9 56.0 2.1 QP
2.330000 47.4 19.9 56.0 8.6 QP
4.226000 40.5 20.0 56.0 15.5 QP
0.154000 36.2 19.8 55.8 19.6 Ave.
0.558000 30.0 19.7 46.0 16 Ave.
1.154000 44.0 19.8 46.0 2.0 Ave.
1.506000 41.6 19.9 46.0 4.4 Ave.
2.330000 40.0 19.9 46.0 6.0 Ave.
4.226000 32.1 20.0 46.0 13.9 Ave.

FCC Part 15B, Class B Page 12 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

50-pin Telco connectors:
AC 120V/60 Hz, Line

90

80

70

QP
60
Level in dBu

AV
50

40

30

20

10

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

Corrected Correction
Frequency Limit Margin Detector
Amplitude Factor
(MHz) (dBμV) (dB) (PK/Ave./QP)
(dBμV) (dB)
0.150000 49.4 19.8 66.0 16.6 QP
0.298000 44.0 19.8 60.3 16.3 QP
0.530000 42.9 19.8 56.0 13.1 QP
1.186000 35.8 19.7 56.0 20.2 QP
1.418000 30.8 19.8 56.0 25.2 QP
23.130000 33.2 20.3 60.0 26.8 QP
0.150000 36.8 19.8 56.0 19.2 Ave.
0.298000 38.3 19.8 50.3 12.0 Ave.
0.530000 36.9 19.8 46.0 9.1 Ave.
1.186000 27.2 19.7 46.0 18.8 Ave.
1.418000 23.7 19.8 46.0 22.3 Ave.
23.130000 30.8 20.3 50.0 19.2 Ave.

FCC Part 15B, Class B Page 13 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

AC 120V/60 Hz, Neutral

90

80

70

QP
60
Level in dBu

AV
50

40

30

20

10

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

Corrected Correction
Frequency Limit Margin Detector
Amplitude Factor
(MHz) (dBμV) (dB) (PK/Ave./QP)
(dBμV) (dB)
0.150000 49.1 19.8 66.0 16.9 QP
0.298000 44.4 19.8 60.3 15.9 QP
0.522000 43.2 19.8 56.0 12.8 QP
1.050000 37.6 19.8 56.0 18.4 QP
1.386000 29.1 19.8 56.0 26.9 QP
23.130000 34.5 20.3 60.0 25.5 QP
0.150000 36.3 19.8 56.0 19.7 Ave.
0.298000 38.7 19.8 50.3 11.6 Ave.
0.522000 37.2 19.8 46.0 8.8 Ave.
1.050000 30.2 19.8 46.0 15.8 Ave.
1.386000 23.1 19.8 46.0 22.9 Ave.
23.130000 32.3 20.3 50.0 17.7 Ave.

Note:
1) Correction Factor =LISN VDF (Voltage Division Factor) + Cable Loss + Transient Limiter Attenuation
2) Corrected Amplitude = Reading + Correction Factor
3) Margin = Limit – Corrected Amplitude

FCC Part 15B, Class B Page 14 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

The external I/O cables were draped along the test table and formed a bundle 30 to 40 cm long in the
middle.

The spacing between the peripherals was 10 cm.

EMI Test Receiver Setup
The system was investigated from 30 MHz to 2 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 Measurment

30 MHz – 1000 MHz 100 kHz 300 kHz 120 kHz QP
1MHz 3 MHz / PK
Above 1 GHz
1MHz 10 Hz / Ave.

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 detector mode from 30 MHz to 1 GHz and PK and average
detector modes for frequencies 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 7 dB means the emission is 7 dB below the limit. The equation for margin
calculation is as follows:
Margin = Limit – Corrected Amplitude

Test Results Summary
According to the data in the following table, the EUT complied with the FCC §15.109 Class B,

Refer to CISPR16-4-2:2011 and CISPR 16-4-1:2009, the measured level is in compliance with the limit if
Lm + U(Lm) ≤ Llim + Ucispr
In BACL, U(Lm) is less than Ucispr, if Lm is less than Llim, it implies that the EUT complies with the limit.

FCC Part 15B, Class B Page 16 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Test Data
Environmental Conditions

Temperature: 25 ℃
Relative Humidity: 52 %
ATM Pressure: 101.0 kPa

The testing was performed by Andy Yu on 2019-01-16 and Leo Huang on 2019-01-23.

EUT Operation Mode: Full load

FCC Part 15B, Class B Page 17 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

RJ11 Port:
30 MHz~1 GHz:

80

70

60
Level in dBuV/

50 FCC Part 15 Class B Electric Field Strength QP

40

30

20

10

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

Corrected Antenna Turntable Correction
Frequency Antenna Limit Margin
Amplitude height position Factor
(MHz) Polarity (dBμV/m) (dB)
(dBμV/m) (cm) (degree) (dB/m)
48.583125 25.0 130.0 V 71.0 -19.0 40.00 15.0
60.192000 27.12 130.0 V 320.0 -20.2 40.00 12.88
66.223000 30.05 107.0 V 78.0 -20.5 40.00 9.95
85.353875 31.35 123.0 V 274.0 -19.5 40.00 8.65
86.505375 30.38 116.0 V 81.0 -19.4 40.00 9.62
953.424000 31.56 274.0 H 255.0 9.7 46.00 14.44

FCC Part 15B, Class B Page 18 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

1 GHz – 2 GHz:

Receiver Rx Antenna Corrected Corrected FCC Part 15B
Frequency Turntable
Factor Amplitude
(MHz) Reading Degree Height Polar
PK/QP/Ave. (dB/m) (dBuV/m) Limit Margin
(dBμV) (m) (H / V) (dBuV/m) (dB)
1243.54 44.31 PK 360 1.2 H -3.66 40.65 74 33.35
1243.54 29.43 Ave. 360 1.2 H -3.66 25.77 54 28.23
1243.54 43.16 PK 231 1.5 V -3.66 39.50 74 34.50
1243.54 28.48 Ave. 231 1.5 V -3.66 24.82 54 29.18
1977.96 46.15 PK 137 1.8 H -1.60 44.55 74 29.45
1977.96 30.00 Ave. 137 1.8 H -1.60 28.40 54 25.60
1977.96 44.31 PK 323 2.1 V -1.60 42.71 74 31.29
1977.96 29.83 Ave. 323 2.1 V -1.60 28.23 54 25.77

FCC Part 15B, Class B Page 19 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Horizontal – Peak

74dBuV

Vertical - Peak

74dBuV

FCC Part 15B, Class B Page 20 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Horizontal – Average

54dBuV

Vertical - Average

54dBuV

FCC Part 15B, Class B Page 21 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

50-pin Telco connectors:
30 MHz~1 GHz:

80

70

60
FCC Part 15 Class B Electric Field Strength QP-3m

50
Level in dBμV/

40

30

20

10

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

Corrected Antenna Turntable Correction
Frequency Antenna Limit Margin
Amplitude height position Factor
(MHz) Polarity (dBμV/m) (dB)
(dBμV/m) (cm) (degree) (dB/m)
38.964250 32.24 104.0 V 61.0 -13.1 40.00 7.76
47.810375 29.39 109.0 V 357.0 -18.6 40.00 10.61
85.509500 29.33 107.0 V 290.0 -19.5 40.00 10.67
86.029750 27.02 109.0 V 0.0 -19.4 40.00 12.98
837.542375 29.31 260.0 V 176.0 5.7 46.00 16.69
890.531750 26.21 280.0 V 21.0 4.7 46.00 19.79

FCC Part 15B, Class B Page 22 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

1 GHz – 2GHz:

Receiver Rx Antenna Corrected Corrected FCC Part 15B
Frequency Turntable
Factor Amplitude
(MHz) Reading Degree Height Polar
PK/QP/Ave. (dB/m) (dBuV/m) Limit Margin
(dBμV) (m) (H / V) (dBuV/m) (dB)
1354.26 44.47 PK 219 2.1 H -2.36 42.11 74 31.89
1354.26 29.37 Ave. 219 2.1 H -2.36 27.01 54 26.99
1354.26 43.49 PK 305 1.5 V -2.36 41.13 74 32.87
1354.26 28.61 Ave. 305 1.5 V -2.36 26.25 54 27.75
1987.96 45.62 PK 167 1.6 H -1.50 44.12 74 29.88
1987.96 29.97 Ave. 167 1.6 H -1.50 28.47 54 25.53
1987.96 44.28 PK 161 1.5 V -1.50 42.78 74 31.22
1987.96 28.46 Ave. 161 1.5 V -1.50 26.96 54 27.04

Note:
1) Correction Factor=Antenna factor (RX) + cable loss – amplifier factor
2) Corrected Amplitude = Correction Factor + Reading
3) Margin = Limit - Corrected Amplitude

FCC Part 15B, Class B Page 23 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Horizontal – Peak

74dBuV

Vertical - Peak

74dBuV

FCC Part 15B, Class B Page 24 of 25

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ181225006-00

Horizontal – Average

54dBuV

Vertical - Average

54dBuV

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

FCC Part 15B, Class B Page 25 of 25

Document Created: 2019-03-14 15:01:44
Document Modified: 2019-03-14 15:01:44

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