Test Report

FCC ID: PQN44422TX27MHZ

Test Report

Download: PDF

FCCID_1560397

INTERTEK TESTING SERVICES

Table of Contents

1.0 General Description ............................................................................................ 1
1.1 Product Description ........................................................................................... 1
1.2 Related Submittal(s) Grants ............................................................................... 1
1.3 Test Methodology .............................................................................................. 1
1.4 Test Facility ....................................................................................................... 1

2.0 System Test Configuration ................................................................................. 2
2.1 Justification........................................................................................................ 2
2.2 EUT Exercising Software ................................................................................... 2
2.3 Special Accessories........................................................................................... 2
2.4 Equipment Modification...................................................................................... 2
2.5 Measurement Uncertainty .................................................................................. 2
2.6 Support Equipment List and Description............................................................. 2

3.0 Emission Results ................................................................................................ 3
3.1 Field Strength Calculation .................................................................................. 3
3.2 Radiated Emission Configuration Photograph .................................................... 4
3.3 Radiated Emission Data .................................................................................... 4

4.0 Equipment Photographs..................................................................................... 6

5.0 Product Labelling ................................................................................................ 6

6.0 Technical Specifications..................................................................................... 6

7.0 Instruction Manual .............................................................................................. 6

8.0 Miscellaneous Information ................................................................................. 6
8.2 Discussion of Pulse Desensitization ................................................................... 7
8.3 Calculation of Average Factor ............................................................................ 7
8.4 Emissions Test Procedures ............................................................................... 7

9.0 Equipment List .................................................................................................... 8

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
iii

INTERTEK TESTING SERVICES

1.0 General Description

1.1 Product Description

The Equipment Under Test (EUT) is a transmitter of an RC Car operating at
27.145 MHz as dictated by a crystal. The EUT is powered by a 4.5 V DC source
(3 x 1.5V "AA" size batteries). The EUT has a left / right control lever, a forward /
backward control lever and a power ON/OFF switch.

After switching ON the EUT and the receiver of the RC Car, activating the
control levers on the EUT can control the receiver moving forward, backward,
left and right.

The Model: 1021361/6016876, 1023913/6018296, 1023915/6018296,
1023996/6018354, 1023999/6018357 and 1024001/6018360 are the same as
the Model: 44422 in hardware and software aspect. The models are different
in Model Number and Item Name only.

Antenna Type : External, Integral

For electronic filing, the brief circuit description is saved with filename: descri.pdf.

1.2 Related Submittal(s) Grants

The receiver portion for this transceiver is exempted from the Part 15 technical
rules per 15.101(b).

1.3 Test Methodology

Radiated emission measurements were performed according to the procedures
in ANSI C63.4 (2003). All radiated measurements were performed in an Open
Area Test Site. Preliminary scans were performed in the Open Area Test Site
only to determine worst case modes. All radiated tests were performed at an
antenna to EUT distance of 3 meters, unless stated otherwise in the
“Justification Section” of this Application.

1.4 Test Facility

The open area test site and conducted measurement facility used to collect the
radiated data is located at Garment Centre, 576 Castle Peak Road, Kowloon,
Hong Kong. This test facility and site measurement data have been placed on
file with the FCC.

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
1

INTERTEK TESTING SERVICES

2.0 System Test Configuration
2.1 Justification
The system was configured for testing in a typical fashion (as a customer would
normally use it), and in the confines as outlined in ANSI C63.4 (2003).
The device was powered by 3 X new 1.5V “AA” size batteries.
For maximizing emissions, the EUT was rotated through 360°, the antenna
height was varied from 1 meter to 4 meters above the ground plane, and the
antenna polarization was changed. This step by step procedure for maximizing
emissions led to the data reported in Exhibit 3.0.
The unit was operated standalone and placed in the center of the turntable.
The equipment under test (EUT) was configured for testing in a typical fashion
(as a customer would normally use it). The EUT was mounted to a plastic stand
if necessary and placed on the wooden turntable, which enabled the engineer to
maximize emissions through its placement in the three orthogonal axes.

2.2 EUT Exercising Software
There was no special software to exercise the device. Once the unit is powered
up, it transmits the RF signal continuously.

2.3 Special Accessories
There are no special accessories necessary for compliance of this product.

2.4 Equipment Modification
Any modifications installed previous to testing by Spin Master Toys Far East
Limited will be incorporated in each production model sold/leased in the United
States.
No modifications were installed by Intertek Testing Services Hong Kong Ltd.

2.5 Measurement Uncertainty
When determining of the test conclusion, the Measurement Uncertainty of test
has been considered.

2.6 Support Equipment List and Description
N/A.

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
2

INTERTEK TESTING SERVICES

3.0 Emission Results

Data is included of the worst case configuration (the configuration which resulted
in the highest emission levels). A sample calculation, configuration photographs
and data tables of the emissions are included.

3.1 Field Strength Calculation

The field strength is calculated by adding the Antenna Factor and Cable Factor,
and subtracting the Amplifier Gain (if any), Average Factor (optional) from the
measured reading. The basic equation with a sample calculation is as follows:
FS = RA + AF + CF - AG - AV
where FS = Field Strength in dBµV/m
RA = Receiver Amplitude (including preamplifier) in dBµV
CF = Cable Attenuation Factor in dB
AF = Antenna Factor in dB
AG = Amplifier Gain in dB
AV = Average Factor in dB

In the following table(s), the reading shown on the data table reflects the preamplifier
gain. An example for the calculations in the following table is as follows:
FS = RR + LF
where FS = Field Strength in dBµV/m
RR = RA - AG - AV in dBµV
LF = CF + AF in dB

Assume a receiver reading of 52.0 dBµV is obtained. The antenna factor of
7.4 dB and cable factor of 1.6 dB are added. The amplifier gain of 29 dB and
average factor of 5 dB are subtracted, giving a field strength of 27 dBµV/m.
This value in dBµV/m was converted to its corresponding level in µV/m.

RA = 52.0 dBµV/m
AF = 7.4 dB RR = 18.0 dBµV
CF = 1.6 dB LF = 9.0 dB
AG = 29.0 dB
AV = 5.0 dB
FS = RR + LF
FS = 18 + 9 = 27 dBµV/m

Level in µV/m = Common Antilogarithm [(27 dBµV/m)/20] = 22.4 µV/m

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
3

INTERTEK TESTING SERVICES

3.2 Radiated Emission Configuration Photograph

The worst case in radiated emission was found at 27.145 MHz

For electronic filing, the worst case radiated emission configuration photographs
are saved with filename: radiated photos.pdf.

3.3 Radiated Emission Data

The data on the following page lists the significant emission frequencies, the
limit and the margin of compliance. Numbers with a minus sign are below the
limit.

Judgment: Passed by 3.2 dB margin.

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
4

INTERTEK TESTING SERVICES

Applicant: Spin Master Toys Far East Limited Date of Test: September 21, 2011
Model: 44422
Worst-Case Operating Mode: Transmitting
Sample: 1/2

Table 1

Radiated Emissions
Pursuant to FCC Part 15 Section 227 Emissions Requirement

Polari- Frequency Reading Pre- Antenna Average Net Limit Margin
zation (MHz) (dBμV) Amp Factor Factor at 3m at 3m (dB)
(dB) (dB) (dB) (dBμV/m) (dBμV/m)
V 27.145 77.4 16 15.4 0.0 76.8 80.0 -3.2
V 54.290 39.1 16 11.0 - 34.1 40.0 -5.9
V 81.435 43.8 16 7.0 - 34.8 40.0 -5.2
H 108.580 36.7 16 14.0 - 34.7 43.5 -8.8
H 135.725 37.1 16 14.0 - 35.1 43.5 -8.4
H 162.870 34.8 16 16.0 - 34.8 43.5 -8.7
H 190.015 34.1 16 16.0 - 34.1 43.5 -9.4
H 217.160 33.9 16 17.0 - 34.9 46.0 -11.1
H 244.305 31.3 16 20.0 - 35.3 46.0 -10.7
H 271.450 28.4 16 22.0 - 34.4 46.0 -11.6

NOTES: 1. Peak Detector Data unless otherwise stated.

2. All measurements were made at 3 meters. Harmonic emissions not
detected at the 3-meter distances were measured at 0.3-meter and an
inverse proportional extrapolation was performed to compare the signal
level to the 3-meter limit. No other harmonic emissions than those
reported were detected at a test distance of 0.3-meter.

3. Negative sign in the column shows value below limit.

4. Loop antenna is used for the emissions below 30 MHz.

5. Horn antenna is used for the emissions over 1000MHz.

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
5

INTERTEK TESTING SERVICES

4.0 Equipment Photographs

For electronic filing, the photographs are saved with filename: external photos.pdf
and internal photos.pdf.

5.0 Product Labelling

For electronics filing, the FCC ID label artwork and the label location are saved
with filename: label.pdf.

6.0 Technical Specifications

For electronic filing, the block diagram and schematic of the tested EUT are
saved with filename: block.pdf and circuit.pdf respectively.

7.0 Instruction Manual

For electronic filing, a preliminary copy of the Instruction Manual is saved with
filename: manual.pdf.

This manual will be provided to the end-user with each unit sold/leased in the
United States.

8.0 Miscellaneous Information

The miscellaneous information includes details of the test procedure and
measured bandwidth.

8.1 Measured Bandwidth

The plot saved in bw.pdf which shows the fundamental emission is confined in
the specified band. And it also shows that the emission is at least 44.78 dB
below the carrier level at the band edge (26.96 and 27.28 MHz). It meets the
requirement of Section 15.227 (b).

Pursuant to FCC Part 15 Section 15.215(c), the 20dB bandwidth of the emission
was contained within the frequency band designed (mentioned as above) which
the EUT operated. The effects, if any, from frequency sweeping, frequency
hopping, other modulation techniques and frequency stability over expected
variations in temperature and supply voltage were considered.

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
6

INTERTEK TESTING SERVICES

9.0 Equipment List

1) Radiated Emissions Test
Equipment EMI Test Receiver Spectrum Analyzer Biconical Antenna
40GHz
Registration No. EW-2500 EW-2253 EW-0954
Manufacturer ROHDESCHWARZ ROHDESCHWARZ EMCO
Model No. ESCI FSP40 3104C
Calibration Date Jan 25, 2011 Nov 23, 2010 Apr 14, 2010
Calibration Due Date Jan 25, 2012 Nov 23, 2011 Oct 14, 2011

Equipment Log Periodic Antenna 14m Double Shield RF
Cable
(20MHz - 6GHz)
Registration No. EW-0446 EW-2528
Manufacturer EMCO RADIALL
Model No. 3146 nm / br5d / sma 14m
Calibration Date Apr 26, 2010 Dec 14, 2010
Calibration Due Date Oct 26, 2011 Dec 14, 2011

2) Bandedge Measurement
Equipment Spectrum Analyzer
Registration No. EW-2249
Manufacturer R&S
Model No. FSP30
Calibration Date Oct 22, 2010
Calibration Due Date Oct 22, 2011

Report No.: HK11090666-1
FCC ID: PQN44422TX27MHZ
8

Document Created: 2011-10-14 14:37:54
Document Modified: 2011-10-14 14:37:54

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC