Test Report

FCC ID: IAJMB134

Test Report

Download: PDF
FCCID_309157

Kiddesigns Inc. Application For Certification (FCC ID: IAJMB134) Transmitter, Model : MB-134 We hereby certify that the sample of the above item is considered to comply with the requirements of FCC Part 15, Subpart C for Intentional Radiator, mention 47 CFR [24-5-2001] WO# 0300961 WN/at February 13, 2003 • The test results reported in this report shall refer only to the sample actually tested and shall not refer or be deemed to refer to bulk from which such a sample may be said to have been obtained. • This report shall not be reproduced except in full without prior authorization fromIntertek Testing Services Hong Kong Limited. • The evaluation data of the report will be kept for 3 years from the date of issuance. FCC ID : IAJMB134

INTERTEK TESTING SERVICES LIST OF EXHIBITS INTRODUCTION EXHIBIT 1: General Description EXHIBIT 2: System Test Configuration EXHIBIT 3: Emission Results EXHIBIT 4: Equipment Photographs EXHIBIT 5: Product Labelling EXHIBIT 6: Technical Specifications EXHIBIT 7: Instruction Manual EXHIBIT 8: Miscellaneous Information FCC ID: IAJMB134 i

INTERTEK TESTING SERVICES MEASUREMENT/TECHNICAL REPORT Kiddesigns Inc. - MODEL: MB-134 FCC ID: IAJMB134 February 13, 2003 This report concerns (check one:) Original Grant X Class II Change Equipment Type: Low Power Transmitter (example: computer, printer, modem, etc.) Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? Yes No X If no, assumed Part 15, Subpart C for intentional radiator - the new 47 CFR [24-5-2001 Edition] provision. Report prepared by: Wilbur Ng Intertek Testing Services 2/F., Garment Center, 576, Castle Peak Road, HONG KONG Phone: 852-2173-8502 Fax: 852-2742-9149 FCC ID: IAJMB134 ii

INTERTEK TESTING SERVICES Table of Contents 1.0 General Description ......................................................................................................................2 1.1 Product Description..................................................................................................................2 1.2 Related Submittal(s) Grants .....................................................................................................2 1.3 Test Methodology.....................................................................................................................3 1.4 Test Facility ...............................................................................................................................3 2.0 System Test Configuration ..........................................................................................................5 2.1 Justification ...............................................................................................................................5 2.2 EUT Exercising Software .........................................................................................................5 2.3 Special Accessories...................................................................................................................5 2.4 Equipment Modification ..........................................................................................................6 2.5 Support Equipment List and Description................................................................................6 3.0 Emission Results ...........................................................................................................................8 3.1 Field Strength Calculation........................................................................................................9 3.1 Field Strength Calculation (cont’d) .......................................................................................10 3.2 Radiated Emission Configuration Photograph .....................................................................11 3.3 Radiated Emission Data .........................................................................................................12 4.0 Equipment Photographs ............................................................................................................16 5.0 Product Labelling .......................................................................................................................18 6.0 Technical Specifications .............................................................................................................20 7.0 Instruction Manual .....................................................................................................................22 8.0 Miscellaneous Information ........................................................................................................24 8.1 Emissions Test Procedures.....................................................................................................25 8.1 Emissions Test Procedures (cont'd).......................................................................................26 FCC ID: IAJMB134 iii

INTERTEK TESTING SERVICES List of attached file Exhibit type File Description filename Test Report Test Report report.pdf Operation Description Technical Description descri.pdf Test Setup Photo Radiated Emission radiated photos.pdf External Photo External Photo external photos.pdf Internal Photo Internal Photo internal photos.pdf Block Diagram Block Diagram block.pdf Schematics Circuit Diagram circuit.pdf ID Label/Location Label Artwork and Location label.pdf User Manual User Manual manual.pdf FCC ID: IAJMB134 iv

INTERTEK TESTING SERVICES EXHIBIT 1 GENERAL DESCRIPTION FCC ID: IAJMB134 1

INTERTEK TESTING SERVICES 1.0 General Description 1.1 Product Description The equipment under test (EUT) is a transceiver for a Toy Metal Detector operating at 0.038 MHz which is controlled by a LC Circuit. The EUT is powered by a 9V battery. The EUT has two switches and four buttons. The switch on the left side controls the output sound level of the detector and the switch on the right side controls the sensitivity of detection. The button on the right side is used to activate the detector and the other two buttons are used to generate sound effect. The button on the back of the detector is used to reset the detector. The brief circuit description is saved with filename : descri.pdf 1.2 Related Submittal(s) Grants The receiver for this transmitter is exempted from the Part 15 technical rules per 15.101(b). FCC ID: IAJMB134 2

INTERTEK TESTING SERVICES 1.3 Test Methodology All radiated emission measurements were performed according to the procedures in ANSI C63.4 (1992). All measurements were performed in Open Area Test Sites. Preliminary scans were performed in the Open Area Test Sites 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 emission data is located at Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. This test facility and site measurement data have been fully placed on file with the FCC. FCC ID: IAJMB134 3

INTERTEK TESTING SERVICES EXHIBIT 2 SYSTEM TEST CONFIGURATION FCC ID: IAJMB134 4

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 (1992.) The EUT was powered by a new 9V battery during test. For maximizing emissions below 30 MHz, the EUT was rotated through 360°, the loop antenna height was 1 meter above the ground place, and the antenna polarization was changed. For maximizing emissions above 30 MHz, 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 Exhibition 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 placed on a turn table, which enabled the engineer to maximize emissions through its placement in the three orthogonal axes. For simplicity of testing, the unit was wired to transmit continuously. 2.2 EUT Exercising Software There was no special software to exercise the device. Once the button is depressed, the unit transmits the typical signal. For simplicity of testing, the unit was wired to transmit continuously. 2.3 Special Accessories There are no special accessories necessary for compliance of this product. FCC ID: IAJMB134 5

INTERTEK TESTING SERVICES 2.4 Equipment Modification Any modifications installed previous to testing by Kiddesigns Inc. will be incorporated in each production model sold/leased in the United States. No modifications were installed by Intertek Testing Services. 2.5 Support Equipment List and Description This product was tested in a standalone configuration. All the items listed under section 2.0 of this report are Confirmed by: Wilbur Ng Manager Intertek Testing Services Agent for Kiddesigns Inc. Signature February 13, 2003 Date FCC ID: IAJMB134 6

INTERTEK TESTING SERVICES EXHIBIT 3 EMISSION RESULTS FCC ID: IAJMB134 7

INTERTEK TESTING SERVICES 3.0 Emission Results Data is included 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. FCC ID: IAJMB134 8

INTERTEK TESTING SERVICES 3.1 Field Strength Calculation The field strength is calculated by adding the reading on the Spectrum Analyzer to the factors associated with preamplifiers (if any), antennas, cables, pulse desensitization and average factors (when specified limit is in average and measurements are made with peak detectors). A sample calculation is included below. FS = RA + AF + CF - AG + PD + 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 PD = Pulse Desensitization in dB AV = Average Factor in -dB In the radiated emission table which follows, the reading shown on the data table may reflect the preamplifier gain. An example of the calculations, where the reading does not reflect the preamplifier gain, follows: FS = RA + AF + CF - AG + PD + AV For emission from 9kHz to 490kHz, a distance factor of -40dB are added to simulate the 300m measuring distance. For emission from 490kHz to 30MHz, a distance factor of -20dB are added to simulate the 30m measuring distance. FCC ID: IAJMB134 9

INTERTEK TESTING SERVICES 3.1 Field Strength Calculation (cont’d) Example Assume a receiver reading of 62.0 dBµV is obtained. The antenna factor of 7.4 dB and cable factor of 1.6 dB is added. The amplifier gain of 29 dB is subtracted. The pulse desensitization factor of the spectrum analyzer was 0 dB, and the resultant average factor was -10 dB. The net field strength for comparison to the appropriate emission limit is 32 dBµV/m. This value in dBµV/m was converted to its corresponding level in µV/m. RA = 62.0 dBµV AF = 7.4 dB CF = 1.6 dB AG = 29.0 dB PD = 0 dB AV = -10 dB FS = 62 + 7.4 + 1.6 - 29 + 0 + (-10) = 32 dBµV/m Level in mV/m = Common Antilogarithm [(32 dBµV/m)/20] = 39.8 µV/m FCC ID: IAJMB134 10

INTERTEK TESTING SERVICES 3.2 Radiated Emission Configuration Photograph Worst Case Radiated Emission 0.038 MHz For electronic filing, the worst case radiated emission configuration photograph is saved with filename: radiated photos.pdf FCC ID: IAJMB134 11

INTERTEK TESTING SERVICES 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. Judgement: Passed by 27.8 dB TEST PERSONNEL: Signature Ivan Y. M. Wong, Compliance Engineer Typed/Printed Name February 13, 2003 Date FCC ID: IAJMB134 12

INTERTEK TESTING SERVICES Company: Kiddesigns Inc. Date of Test: January 27, 2003 Model: MB-134 Table 1 Radiated Emissions (Transmitter Portion) Polarity Frequency Reading Antenna Pre- Distance Calculated Limit Margin (MHz) (dBµV) Factor Amp Factor at 300m at 300m (dB) (dB) Gain (dB) (dBµV/m) (dBµV/m) (dB) I 0.038 52.6 11.6 16.0 40.0 8.2 36.0 -27.8 I 0.077 41.1 10.7 16.0 40.0 -4.2 29.9 -34.1 I 0.116 37.3 10.2 16.0 40.0 -8.5 26.3 -34.8 I 0.155 40.0 10.2 16.0 40.0 -5.8 23.8 -29.6 I 0.194 38.6 10.2 16.0 40.0 -7.2 21.9 -29.1 I 0.233 36.7 10.2 16.0 40.0 -9.1 20.3 -29.4 I 0.272 37.1 10.0 16.0 40.0 -8.9 18.9 -27.8 Notes: 1. Peak Detector Data unless otherwise stated. 2. All measurements were made at 3 meter. Harmonic emissions not detected at the 3 meter distance 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 value in the margin column shows emission below limit. 4. Horn antenna are used for the emission over 1000MHz. 5. Polarity "I" means the plane of loop antenna lies on the plane between the centre of antenna and turntable. Test Engineer: Ivan Y. M. Wong FCC ID: IAJMB134 13

INTERTEK TESTING SERVICES Company: Kiddesigns Inc. Date of Test: January 27, 2003 Model: MB-134 Table 2 Radiated Emissions (Sound Portion) Polarity Frequency Reading Antenna Pre- Net Limit Margin (MHz) (dBµV) Factor Amp at 3m at 3m (dB) (dB) Gain (dBµV/m) (dBµV/m) (dB) V 33.865 29.1 10.0 16.0 23.1 40 -16.9 V 39.624 29.7 10.0 16.0 23.7 40 -16.3 V 44.623 29.5 10.0 16.0 23.5 40 -16.5 V 49.862 29.0 11.0 16.0 24.0 40 -16.0 V 54.271 28.9 11.0 16.0 23.9 40 -16.1 V 61.883 30.3 10.0 16.0 24.3 40 -15.7 Notes: 1. Peak Detector Data unless otherwise stated. 2. All measurements were made at 3 meter. Harmonic emissions not detected at the 3 meter distance 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 value in the margin column shows emission below limit. 4. Horn antenna are used for the emission over 1000MHz. *Emission within the restricted band meets the requirement of part 15.205. The corresponding limit as per 15.209 is based on Quasi peak detector data for frequencies below 1000 MHz and peak detector data with average factor for frequencies over 1000 MHz. Test Engineer: Ivan Y. M. Wong FCC ID: IAJMB134 14

INTERTEK TESTING SERVICES EXHIBIT 4 EQUIPMENT PHOTOGRAPHS FCC ID: IAJMB134 15

INTERTEK TESTING SERVICES 4.0 Equipment Photographs For electronic filing, the photographs are saved with filename: external photos.pdf and internal photos.pdf FCC ID: IAJMB134 16

INTERTEK TESTING SERVICES EXHIBIT 5 PRODUCT LABELLING FCC ID: IAJMB134 17

INTERTEK TESTING SERVICES 5.0 Product Labelling For electronic filing, the FCC ID label artwork and the label location are saved with filename: label.pdf FCC ID: IAJMB134 18

INTERTEK TESTING SERVICES EXHIBIT 6 TECHNICAL SPECIFICATIONS FCC ID: IAJMB134 19

INTERTEK TESTING SERVICES 6.0 Technical Specifications For electronic filing, the block diagram and schematics are saved with filename: block.pdf and circuit.pdf FCC ID: IAJMB134 20

INTERTEK TESTING SERVICES EXHIBIT 7 INSTRUCTION MANUAL FCC ID: IAJMB134 21

INTERTEK TESTING SERVICES 7.0 Instruction Manual For electronic filing, a preliminary copy of the Instruction Manual is saved with filename: manual.pdf FCC ID: IAJMB134 22

INTERTEK TESTING SERVICES EXHIBIT 8 MISCELLANEOUS INFORMATION FCC ID: IAJMB134 23

INTERTEK TESTING SERVICES 8.0 Miscellaneous Information This miscellaneous information includes details of the test procedure and calculation of factors such as pulse desensitization and averaging factor. FCC ID: IAJMB134 24

INTERTEK TESTING SERVICES 8.1 Emissions Test Procedures The following is a description of the test procedure used by Intertek Testing Services in the measurements of transmitters operating under Part 15, Subpart C rules. The test set-up and procedures described below are designed to meet the requirements of ANSI C63.4 - 1992. The transmitting equipment under test (EUT) is placed on a wooden turntable which is four feet in diameter and approximately one meter in height above the ground plane. During the radiated emissions test, the turntable is rotated and any cables leaving the EUT are manipulated to find the configuration resulting in maximum emissions. The antenna height and polarization are varied during the testing to search for maximum signal levels. Detector function for radiated emissions is in peak mode. Average readings, when required, are taken by measuring the duty cycle of the equipment under test and subtracting the corresponding amount in dB from the measured peak readings. The frequency range scanned is from the lowest radio frequency signal generated in the device which is greater than 9 kHz to the tenth harmonic of the highest fundamental frequency or 40 GHz, whichever is lower. For line conducted emissions, the range scanned is 450 kHz to 30 MHz. FCC ID: IAJMB134 25

INTERTEK TESTING SERVICES 8.1 Emissions Test Procedures (cont'd) The EUT is warmed up for 15 minutes prior to the test. AC power to the unit is varied from 85% to 115% nominal and variation in the fundamental emission field strength is recorded. If battery powered, a new, fully charged battery is used. Conducted measurements are made as described in ANSI C63.4 - 1992. The IF bandwidth used for measurement of radiated signal strength was 100 kHz or greater below 1000 MHz. Where pulsed transmissions of short enough pulse duration warrant, a greater bandwidth is selected according to the recommendations of Hewlett Packard Application Note 150-2. Above 1000 MHz, a resolution bandwidth of 1 MHz is used. Transmitter measurements are normally conducted at a measurement distance of three meters. However, to assure low enough noise floor in the forbidden bands and above 1 GHz, signals are acquired at a distance of one meter or less. All measurements are extrapolated to three meters using inverse scaling, but those measurements taken at a closer distance are so marked. FCC ID: IAJMB134 26


Document Created: 2003-03-12 08:42:06
Document Modified: 2003-03-12 08:42:06
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC