Measurement Report

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Topvision(Shenzhen) Technology Co., LTD MR12 2AYIT-MR12 2AYITMR12 mr12

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

FCC Part 15C Test Report FCC ID: 2AYIT-MR12

Applicant: Address: Manufacturer: Address: EUT: Trade Mark: Model Number: Date of Receipt: Test Date: Date of Report: Prepared By: Address: Applicable Standards: Test Result: Report Number:

Topvision(ShenZhen)Technology Co.,LTD Room 601.No.213.Niucheng Road.Niucheng Village. Xili Street.Nanshan district Shenzhen City Topvision(ShenZhen)Technology Co.,LTD Room 601.No.213.Niucheng Road.Niucheng Village. Xili Street.Nanshan district Shenzhen City Video Doorbell
N/A MR12 MR13, MR14, MR15, MR16, MR17, MR18, MR19, MR20 May. 08, 2024
May. 08, 2024 - May. 24, 2024
May. 24, 2024
Shenzhen DL Testing Technology Co., Ltd. 101-201, Building C, Shuanghuan, No.8, Baoqing Road, Baolong Industrial Zone, Baolong Street, Longgang District, Shenzhen, Guangdong, China FCC PART 15 C 15.231 ANSI C63.10:2013 Pass
DL-240508018-2ER

Prepared (Test Engineer):

Alisa Song

Reviewer (Supervisor):

Jack Bu

Approved (Manager):

Jade Yang

This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd.

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

Table of Contents
1 . SUMMARY OF TEST RESULTS 1.1 MEASUREMENT UNCERTAINTY
2 . GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT 2.2 DESCRIPTION OF TEST MODES 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS
3 . EMC EMISSION TEST 3.1 CONDUCTED EMISSION MEASUREMENT 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 3.1.2 TEST PROCEDURE 3.1.3 DEVIATION FROM TEST STANDARD 3.1.4 TEST SETUP 3.1.5 EUT OPERATING CONDITIONS 3.1.6 TEST RESULTS 3.2 RADIATED EMISSION MEASUREMENT 3.2.1 RADIATED EMISSION LIMITS 3.2.2 TEST PROCEDURE 3.2.3 DEVIATION FROM TEST STANDARD 3.2.4 TEST SETUP 3.2.5 EUT OPERATING CONDITIONS 3.2.6 TEST RESULTS (BETWEEN 9KHZ ­ 30 MHZ) 3.2.7 TEST RESULTS (BETWEEN 30MHZ ­ 1GHZ) 3.2.8 TEST RESULTS (1GHZ~25GHZ)
4 . BANDWIDTH TEST 4.1 APPLIED PROCEDURES / LIMIT 4.1.1 TEST PROCEDURE 4.1.2 DEVIATION FROM STANDARD 4.1.3 TEST SETUP 4.1.4 EUT OPERATION CONDITIONS 4.1.5 TEST RESULTS
5 . CALCULATION OF AVERAGE FACTOR 5.1 APPLIED PROCEDURES / LIMIT 5.1.1 TEST PROCEDURE 5.1.2 TEST SETUP

Page
4 4 5 5 5 6 6 6 7 8 8 8 8 8 9 9 9 12 12 13 13 14 15 16 17 20 21 21 21 21 21 21 22 23 23 23 23

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Table of Contents
5.1.3 EUT OPERATION CONDITIONS 5.1.4 TEST RESULTS 6 . TRANSMISSION CEASE TIME 6.1 APPLIED PROCEDURES / LIMIT 6.1.1 TEST PROCEDURE 6.1.2 DEVIATION FROM STANDARD 6.1.3 TEST SETUP 6.1.4 EUT OPERATION CONDITIONS 6.1.5 TEST RESULTS 7 . ANTENNA REQUIREMENT 7.1 STANDARD REQUIREMENT 7.2 EUT ANTENNA 8 . TEST SEUUP PHOTO 9 . EUT PHOTO

Report No.: DL-240508018-2ER
Page
23 24 25 25 25 25 25 25 26 27 27 27 27 27

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards:

Standard Section 15.207
15.209,15.231b
15.231a
15.215
15.203

FCC Part15 (15.231) , Subpart C

Test Item

Judgment

Conducted Emission
Fundamental &Radiated Spurious Emission Measurement
Transmission cease time

PASS PASS PASS

20dB Bandwidth

PASS

Antenna Requirement

PASS

Remark

NOTE:

(1)" N/A" denotes test is not applicable in this Test Report

Test lab: Shenzhen DL Testing Technology Co., Ltd.

Address:

101-201, Building C, Shuanghuan, No.8, Baoqing Road, Baolong Industrial Zone, Baolong Street, Longgang District, Shenzhen, Guangdong, China

FCC Test Firm Registration Number: 854456

Designation Number: CN1307

IC Registered No.: 27485

CAB ID.: CN0118

1.1 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2,providing a level of confidence of approximately 95 %.

No.

Item

1

Conducted Emission Test

2

RF power,conducted

3

Spurious emissions,conducted

4

All emissions,radiated(<1G)

5

All emissions,radiated(>1G)

6

Temperature

7

Humidity

8

20dB Bandwidth

Uncertainty ±2.56dB ±0.42dB ±2.76dB ±3.65dB ±4.89dB ±0.5°C ±2% ±0.2MHz

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT

Product Name: Trademark
Model No.:
Model Difference Operation Frequency: Channel numbers: Modulation technology: Antenna Type: Antenna gain:
Power supply:

Video Doorbell
N/A MR12 MR13, MR14, MR15, MR16, MR17, MR18, MR19, MR20 The product's different for model number and appearance color.
433.92MHz
1 Channels
FSK
Internal Antenna
0.55dBi DC 3.7V from battery DC 5V from USB

Note: 1.For a more detailed features description, please refer to the manufacturer's specifications or the User's Manual. 2.The EUT's all information provided by client.

2.2 DESCRIPTION OF TEST MODES
To investigate the maximum EMI emission characteristics generates from EUT, the test system was pre-scanning tested base on the consideration of following EUT operation mode or test configuration mode which possible have effect on EMI emission level. Each of these EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated respectively.

Pretest Mode Mode 1

Description TX Mode For Conducted & Radiated Emission

Final Test Mode Mode 1

Description TX Mode

Note: (1) New battery is used during the test

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Report No.: DL-240508018-2ER

2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED Radiated Spurious Emission Test
E-1 EUT
Conducted Spurious Emission Test

E-1 EUT

C1

E-2

Adapter

AC Mains

2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE)
The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests.

Item

Equipment

E-1

Video Doorbell

E-2

Adapter

Model/Type No. MR12
HW-0502000E

Series No. N/A N/A

Note EUT

Item Shielded Type Ferrite Core

Length

Note

Note: (1) For detachable type I/O cable should be specified the length in cm inLengthcolumn.
2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING None.

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Report No.: DL-240508018-2ER

2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS

Radiation test, Band-edge test and 20db bandwidth test equipment

Item

Equipment

Manufacturer Type No.

Serial No.

1

Spectrum Analyzer (9kHz-26.5GHz)

Agilent

E4408B

MY50140780

2

Test Receiver (9kHz-7GHz)

R&S

ESRP7

101393

3

Bilog Antenna (30MHz-1GHz)

R&S

VULB9162

00306

4

Horn Antenna (1GHz-18GHz)

Schwarzbeck BBHA9120D

02139

5

Horn Antenna (18GHz-40GHz)

A.H. Systems

SAS-574

6

Amplifier (9KHz-6GHz)

Schwarzbeck BBV9743B

588 00153

7

Amplifier (1GHz-18GHz)

EMEC

EM01G8GA

00270

8

Amplifier (18GHz-40GHz)

Quanjuda

DLE-161

97

9

Loop Antenna (9KHz-30MHz)

Schwarzbeck FMZB1519B

10

RF cables1 (9kHz-1GHz)

ChengYu

966

00014 004

11

RF cables2 (1GHz-40GHz)

ChengYu

966

003

12 Antenna connector Florida RF Labs

N/A

RF 01#

13 Power probe

KEYSIGHT

U2021XA MY55210018

14

Signal Analyzer 9kHz-26.5GHz

15

Test Receiver 20kHz-40GHz

Agilent R&S

N9020A ESU 40

MY55370280 100376

16 D.C. Power Supply LongWei

PS-305D

010964729

Last calibration Calibrated until Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024

Conduction Test equipment

Item

Equipment

Manufacturer

1 843 Shielded Room ChengYu

2

EMI Receiver

R&S

3

LISN

R&S

4

843 Cable 1#

ChengYu

Type No. 843 Room
ESR ENV216 CE Cable

Serial No. 843
101421 102417
001

Last calibration Calibrated until Sep. 20, 2022 Sep. 19, 2025 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024 Nov. 04, 2023 Nov. 03, 2024

Other

Item

Name

1 EMC Conduction Test System

2

EMC radiation test system

3

RF test system

4 RF communication test system

Manufacturer FALA FALA
MAIWEI MAIWEI

Model EZ_EMC EZ_EMC MTS8310 MTS8200

Software version EMC-CON 3A1.1
FA-03A2 2.0.0.0 2.0.0.0

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

3. EMC EMISSION TEST 3.1 CONDUCTED EMISSION MEASUREMENT 3.1.1 POWER LINE CONDUCTED EMISSION Limits

(Frequency Range 150KHz-30MHz)

FREQUENCY (MHz)

Limit (dBuV) Quasi-peak

Average

Standard

0.15 -0.5

66 - 56 *

56 - 46 *

FCC

0.50 -5.0

56.00

46.00

FCC

5.0 -30.0

60.00

50.00

FCC

Note:

(1) The tighter limit applies at the band edges.

(2) The limit of " * " marked band means the limitation decreases linearly with the logarithm of the frequency in the range.

The following table is the setting of the receiver Receiver Parameters Attenuation Start Frequency Stop Frequency IF Bandwidth

Setting 10 dB 0.15 MHz 30 MHz 9 kHz

3.1.2 TEST PROCEDURE
a. The EUT was placed 0.8 meters from the horizontal ground plane with EUT being connected to the power mains through a line impedance stabilization network (LISN). All other support equipments powered from additional LISN(s). The LISN provide 50 Ohm/ 50uH of coupling impedance for the measuring instrument.
b. Interconnecting cables that hang closer than 40 cm to the ground plane shall be folded back and forth in the center forming a bundle 30 to 40 cm long.
c. I/O cables that are not connected to a peripheral shall be bundled in the center. The end of the cable may be terminated, if required, using the correct terminating impedance. The overall length shall not exceed 1 m.
d. LISN at least 80 cm from nearest part of EUT chassis. e. For the actual test configuration, please refer to the related Item ­EUT Test Photos.
3.1.3 DEVIATION FROM TEST STANDARD
No deviation

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Report No.: DL-240508018-2ER

3.1.4 TEST SETUP

Vertical Reference Ground Plane

40cm

EUT

Test Receiver

LISN

80cm

Horizontal Reference Ground Plane

Note: 1.Support units were connected to second LISN.

2.Both of LISNs (AMN) are 80 cm from EUT and at least 80

cm

from other units and other metal planes

support. units.

3.1.5 EUT OPERATING CONDITIONS The EUT was configured for testing in a typical fashion (as a customer would normally use it). The EUT has been programmed to continuously transmit during test. This operating condition was tested and used to collect the included data. We pretest AC 120V and AC 230V, the worst voltage was AC 120V and the data recording in the report.
3.1.6 TEST RESULTS

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Temperature: Pressure: Test Voltage :

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Report No.: DL-240508018-2ER

25  1010hPa AC 120V/60Hz

Relative Humidity: Phase : Test Mode:

54% L Mode 1

Remark: Margin = Limit ­ Level, Correct Factor = Cable lose + LISN insertion loss, Level= Reading + Correct factor

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Temperature: Pressure: Test Voltage :

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Report No.: DL-240508018-2ER

25  1010hPa AC 120V/60Hz

Relative Humidity: Phase : Test Mode:

54% N Mode 1

Remark: Margin = Limit ­ Level, Correct Factor = Cable lose + LISN insertion loss, Level= Reading + Correct factor

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Report No.: DL-240508018-2ER

3.2 RADIATED EMISSION MEASUREMENT 3.2.1 RADIATED EMISSION LIMITS (Frequency Range 9kHz-1000MHz)

In case the emission fall within the restricted band specified on 15.205(a), then the 15.209(a) limit in the table below has to be followed.

Frequency (MHz)

Field Strength (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

3

88~216

150

3

216~960

200

3

Above 960

500

3

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)

40.66-40.70 MHz

2250

225

70-130 MHz

1250

125

130-174 MHz

1250-3750**

1250-375**

174-260 MHz

3750

375

260-470 MHz

3750-12500**

3750-1250**

Above 470 MHz

12500

1250

[Where F is the frequency in MHz, the formulas for calculating the maximum permitted fundamental field strengths are as follows: for the band 130-174 MHz, µV/m at 3 meters = 56.81818(F) - 6136.3636; for the band 260-470 MHz, µV/m at 3 meters = 41.6667(F) 7083.3333. The maximum permitted unwanted emission level is 20 dB below the maximum permitted fundamental level.]

LIMITS OF RADIATED EMISSION MEASUREMENT (Above 1000MHz)

FREQUENCY (MHz)

Limit (dBuV/m) (at 3M)

PEAK

AVERAGE

Above 1000

74

54

Notes:

(1) The limit for radiated test was performed according to FCC PART 15C.

(2) The tighter limit applies at the band edges.

(3) Emission level (dBuV/m)=20log Emission level (uV/m).

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Report No.: DL-240508018-2ER

Receiver setup: Frequency
9KHz-150KHz 150KHz-30MHz
30MHz-1GHz
Above 1GHz

Detector Quasi-peak Quasi-peak Quasi-peak
Peak Peak

RBW 200Hz 9KHz 100KHz 1MHz 1MHz

VBW 600Hz 30KHz 300KHz 3MHz 10Hz

Value Quasi-peak Quasi-peak Quasi-peak
Peak Average

3.2.2 TEST PROCEDURE Below 1GHz test procedure as below:
a. The EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 meter semi-anechoic camber. The table was rotated 360 degrees to determine the position of the highest radiation.
b. The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on the top of a variable-height antenna tower.
c. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement.
d. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters (for the test frequency of below 30MHz, the antenna was tuned to heights 1 meter) and the rotatable table was turned from 0 degrees to 360 degrees to find the maximum reading.
e. The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum Hold Mode.
f. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method as specified and then reported in a data sheet.
Above 1GHz test procedure as below:
g. Different between above is the test site, change from Semi- Anechoic Chamber to fully Anechoic Chamber and change form table 0.8 metre to 1.5 metre( Above 18GHz the distance is 1 meter and table is 1.5 metre).
h. Test the EUT in the lowest channel ,the middle channel ,the Highest channel
Note:
Both horizontal and vertical antenna polarities were tested and performed pretest to three orthogonal axis. The worst case emissions were reported
3.2.3 DEVIATION FROM TEST STANDARD No deviation

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3.2.4 TEST SETUP ARadiated Emission Test-Up Frequency Below 30MHz
Semi-anechoic 3m Chamber
Turn Table From 0°to 360°

3m
EUT

0.8m

Turn Table

Report No.: DL-240508018-2ER

PC System

Spectrum Analyzer

BRadiated Emission Test-Up Frequency 30MHz~1GHz

Semi-anechoic 3m Chamber
Antenna Elevation Varies From 1 to 4 m Turn Table From 0°to 360°
3m
EUT

0.8m

Turn Table

AMP

Combining Network

PC System

Spectrum Analyzer

AMP

Combining Network

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CRadiated Emission Test-Up Frequency Above 1GHz
Aechoic 3m Chamber
Antenna Elevation Varies From 1 to 4 m Turn Table From 0°to 360°
3m
EUT

1.5m

Turn Table

Absorbers

Report No.: DL-240508018-2ER

PC System

Spectrum Analyzer

AMP

Combining Network

3.2.5 EUT OPERATING CONDITIONS
The EUT tested system was configured as the statements of 2.3 Unless otherwise a special operating condition is specified in the follows during the testing.

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3.2.6 TEST RESULTS (BETWEEN 9KHZ ­ 30 MHZ)

Temperature: Pressure: Test Mode :

20 1010 hPa Mode 1

Relative Humidtity: Test Voltage : Polarization :

48% DC 3.7V --

Freq. (MHz)
---

Reading (dBuV/m)
---

Limit (dBuV/m)
---

Margin (dB) ---

State P/F PASS PASS

NOTE:
The amplitude of spurious emissions which are attenuated by more than 20dB below the permissible value has no need to be reported. Distance extrapolation factor =40 log (specific distance/test distance)(dB); Limit line = specific limits(dBuv) + distance extrapolation factor.

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3.2.7 TEST RESULTS (BETWEEN 30MHZ ­ 1GHZ)

Temperature: Pressure: Test Voltage : Test Mode :

26 1010 hPa DC 3.7V Mode 1

Relative Humidity: Polarization :

54% Horizontal

Remark: Correct Factor = Cable loss + Antenna factor ­ Preamplifier; Level = Reading Level + Correct Factor; Margin = Level - Limit;

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Temperature: Pressure: Test Voltage : Test Mode :

26 1010 hPa DC 3.7V Mode 1

Relative Humidity: Polarization :

54% Vertical

Remark: Correct Factor = Cable loss + Antenna factor ­ Preamplifier; Level = Reading Level + Correct Factor; Margin = Level - Limit;

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For average Emission

Report No.: DL-240508018-2ER

Frequency MHz
434.0649 869.1300

Peak Level dBuV/m 64.56 53.02

Duty cycle AverageLevel

Polarization

factor

dBuV/m

-8

56.56

Horizontal

-8

45.02

Horizontal

Limit AV 80.8 60.8

Margin
-24.24 -15.78

Notes: 1. Average emission Level = Peak Level + Duty cycle factor 2.Duty cycle level please see clause 5.

Frequency MHz
434.0649 869.1300

Peak Level dBuV/m 70.36 56.37

Duty cycle AverageLevel

Polarization

factor

dBuV/m

-8

62.36

Vertical

-8

48.37

Vertical

Limit AV 80.8 60.8

Margin
-18.44 -12.43

Notes: 1. Average emission Level = Peak Level + Duty cycle factor 2.Duty cycle level please see clause 5.

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Report No.: DL-240508018-2ER

3.2.8 TEST RESULTS (1GHZ TO 10 TH HARMONICS)

Polar (H/V)
V V V V V V H H H H H H

Frequency
(MHz)
1301.76 1735.68 2169.6 2603.52 3037.44 3471.36 1301.76 1735.68 2169.6 2603.52 3037.44 3471.36

Peak Reading
Level (dBuV)
55.63 64.52 63.44 62.85 50.14 49.41 56.63 63.61 61.22 61.96 48.41 47.33

Correct Peak Factor Level

Duty cycle factor

Average Level

(dB) (dB) (dB/m) (dBuV/m) operation frequency:433.92

-21.97 33.66 -8

25.66

-21.97 42.55 -8

34.55

-17.41 46.03 -8

38.03

-17.41 45.44 -8

37.44

-2.63 47.51 -8

39.51

-2.63 46.78 -8

38.78

-21.97 34.66 -8

26.66

-21.97 41.64 -8

33.64

-17.41 43.81 -8

35.81

-17.41 44.55 -8

36.55

-2.63 45.78 -8

37.78

-2.63 44.7 -8

36.7

Limits PK
(dB)
74 80.8 80.8 80.8 80.8 80.8 74 80.8 80.8 80.8 80.8 80.8

Limits AV
(dB)
54 60.8 60.8 60.8 60.8 60.8 54 60.8 60.8 60.8 60.8 60.8

Margin PK
-40.34 -38.25 -34.77 -35.36 -33.29 -34.02 -39.34 -39.16 -36.99 -36.25 -35.02 -36.10

Margin AV
-28.34 -26.25 -22.77 -23.36 -21.29 -22.02 -27.34 -27.16 -24.99 -24.25 -23.02 -24.10

Remark:
1. PK Emission Level = Peak Reading Level + Correct Factor 2. Correct Factor= Antenna Factor + Cable Loss ­ Pre-amplifier,
Margin= Emission Level - Limit 2. If peak below the average limit, the average emission was no test. 3. The amplitude of spurious emissions which are attenuated by more than 20dB below the permissible value has no need to be reported.

Notes: 1. Average emission Level = Peak Level + Duty cycle factor 2.Duty cycle level please see clause 5. 3. Pulse Desensitization Correction Factor Pulse Width (PW) = 48.72ms 2/PW = 2/48.72ms = 0.04kHz RBW (100 kHz) > 2/PW (0.04kHz) Therefore PDCF is not needed

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Report No.: DL-240508018-2ER

4. BANDWIDTH TEST

4.1 APPLIED PROCEDURES / LIMIT FCC Part15 (15.231) , Subpart C

Section

Description

15.231C

The bandwidth of the emission shall be no wider than 0.25% of the center frequency for devices operating between 70 MHz to 900 MHz. Those devices operating above 900 MHz, the emission spurious shall be no wider than 0.5% of the center frequency. Bandwidth is determined at the points 20 dB down from the modulated carrier. B.W (20dBc) Limit = 0.25% * f(MHz) = 0.25% * 433.92MHz = 1.0848MHz

4.1.1 TEST PROCEDURE
1. Set RBW = 100kHz. 2. Set VBW = 300 kHz. 3. Detector = Peak. 4. Trace mode = max hold. 5. Sweep = auto couple. 6. Allow the trace to stabilize. 7. Measure the maximum width of the emission that is constrained by the frequencies associated with the two outermost amplitude points (upper and lower frequencies) that are attenuated by 20 dB relative to the maximum level measured in the fundamental emission.

4.1.2 DEVIATION FROM STANDARD No deviation. 4.1.3 TEST SETUP

4.1.4 EUT OPERATION CONDITIONS
The EUT tested system was configured as the statements of 2.3 Unless otherwise a special operating condition is specified in the follows during the testing.

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Shenzhen DL Testing Technology Co., Ltd. 4.1.5 TEST RESULTS

Frequency (MHz)
433.92

20dB Bandwidth (MHz) 0.581
FSK

Report No.: DL-240508018-2ER
Result Pass

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

5. CALCULATION OF AVERAGE FACTOR
5.1 APPLIED PROCEDURES / LIMIT The output field strengths of specification in accordance with the FCC rules specify measurements with an average detector. During the test, a spectrum analyzer incorporating a peak detector was used. Therefore, a reduction factor can be applied to the resultant peak signal level and compared to the limit for measurement instrumentation incorporating an average detector. The duty cycle is measured in 100 ms or the repetition cycle period, whichever is a shorter time frame. The duty cycle is measured by placing the spectrum analyzer to set zero span at 100kHz resolution bandwidth.

5.1.1 TEST PROCEDURE
1. Set RBW = 100 kHz. 2. Set VBW = 300 kHz. 3. Detector = Peak. 4. Sweep = auto couple. 5. Allow the trace to stabilize.
5.1.2 TEST SETUP

5.1.3 EUT OPERATION CONDITIONS
The EUT tested system was configured as the statements of 2.3 Unless otherwise a special operating condition is specified in the follows during the testing.

Test Report

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Shenzhen DL Testing Technology Co., Ltd. 5.1.4 TEST RESULTS
Duty Cycle= Effective time one cycle/ Total time one cycle Averaging factor in dB =20log (duty cycle) Duty Cycle = (1.2ms*9+0.44ms*16)/48.72 Therefore, the averaging factor is found by 20log0.4=-8.0dB Test plot as follows:

Report No.: DL-240508018-2ER

Test Report

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

6. TRANSMISSION CEASE TIME
6.1 APPLIED PROCEDURES / LIMIT FCC Part15 (15.231) , Subpart C

Section

Description

15.231a

A manually operated transmitter shall employ a switch that will automatically deactivate the transmitter within not more than 5 seconds of being released.

6.1.1 TEST PROCEDURE
1. Set RBW = 100 kHz. 2. Set VBW = 300 kHz. 3. Detector = Peak. 4. Trace mode = max hold. 5. Allow the trace to stabilize.

6.1.2 DEVIATION FROM STANDARD No deviation. 6.1.3 TEST SETUP

6.1.4 EUT OPERATION CONDITIONS
The EUT tested system was configured as the statements of 2.3 Unless otherwise a special operating condition is specified in the follows during the testing.

Test Report

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

6.1.5 TEST RESULTS Normal

Transmission cease time (second) 0.17

Limit (second) <5s

Result Pass

Test Report

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Shenzhen DL Testing Technology Co., Ltd.

Report No.: DL-240508018-2ER

7. ANTENNA REQUIREMENT 7.1 STANDARD REQUIREMENT
15.203 requirement: 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 with the device.
7.2 EUT ANTENNA The EUT antenna is internal antenna, It comply with the standard requirement.

8. TEST SEUUP PHOTO Reference to the appendix I for details.
9. EUT PHOTO Reference to the appendix II for details.
 END OF REPORT 

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