T28SZFDADZGSFM Transmitter

Features: This device can set up the digital plays, car or home audio systems wireless link quickly and easily. It only needs to connect the FM transmitter to your MP3 player, portable DVD, PDA, MD, CD, MP4, cassette player, PC, laptop or any other audio players. High fidelity stereo effect: this device can modulate the audio frequency signal to FM signal (88.1~107.9MHz). With the stereo tune you can enjoy listening high quality music anywhere. LCD display for easier control. Full frequency range design can effectively avoid interruption. Operation instruction: 1  Press the power button “ON/OFF” for a few seconds  the LCD display shows  “ON 88.1MHZ”, “88.1MHZ” is the transmission frequency.On the state of just power off, click the power button “ON/OFF”, the device will auto check transmission circuit. The device will default the transmission frequency setting before power off. 2Plug the FM Transmitter into the audio device's output port, Adjust the volume and frequency of the FM radio (avoid the transmission points of the broadcasting stations) .Press the power button of the FM Transmitter, tune the transmission frequency, according to the reception frequency of the FM radio (If the FM signal is interrupted, please set the frequency of the FM Transmitter and the FM tuner to the other frequency) 3click the “SCAN” or “SCAN” buttonto adjust 0.1MHz frequency up or down. Press the SCAN” or “SCAN” button for a few seconds, the device will adjust frequency automatically. 4built-in rechargeable lithium battery, when LCD display shows“ ”, Please charge up the device. 5Charge operating: Plug the charger (accessories) into cigarette lighter in your car, connect with the device. (Remark: charge time < 180 minutes). Specification: Operating range: >10m Operating current: 45mA Transmission range: 88.1 MHz -107.9MHz (interval 0.1MHz) Frequency response: 20-15000Hz Stereo Separation: 40dB Transmission Frequency Deviation: <0.1MHz Frequency stability range: ±10PPM Signal-to-Noise ratio: ≥68dB Caution: Changes or modifications to this unit not expressly approved by the party responsible for compliance will void the user’s authority to operate the equipment. Any change to the equipment will void FCC grant. NOTE: This equipment has been tested and found to comply with the limits for a digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: --Reorient or relocate the receiving antenna. --Increase the separation between the equipment and receiver. --Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. --Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

L R CRYSTAL 7.6MHz POWER PLL PREEMPHASISLCD CPU RF

External Photos EUT Top View EUT Bottom View EUT Adapter View

ID Label Label FCC ID: T28SZFDADZGS

ID Label/Location Label Location Information Specifications: Text is Black or white in color and is left justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Refer to the below arrow.

Internal Photos EUT – Inside View (1) EUT – Inside View (2) EUT –PCB View (1) EUT –PCB View (2) EUT –PCB View (3) EUT –Battery Front View EUT –Battery Rear View

Circuit Description: The main function of this circuit is miniature FM transmit, when audio signal is modulated to the best effect, input PLL and modulate stereo, then fm by PLL and oscillation frequency of PLL, finally transmit by RF.PLL oscillation frequency is controlled by CPU at the same time, CPU output controlled signal control the specific frequency of PLL, in addition the specific frequency will display in the LCD. The power of the circuit can be provided by lithium battery step-up to 5V, also can be provided by car 12V power step-down to 5V,or supplied by car 12V power change to 5V via DC-DC step-up to 5V.

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Note: The test report is specially limited to the above company and this particular sample only. It may not be duplicated without prior written consent of Bay Area Compliance Lab Corp. (ShenZhen). This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the US Government. FCC PART 15.239 EMI MEASUREMENT AND TEST REPORT For SHENZHEN XINFUDA ELECTRONIC CO., LTD 3F,Room 3321,International Electronics Building,Huaqiang North Road, Futian Dist,Shenzhen,China FCC ID: T28SZFDADZGS May 12, 2006 This Report Concerns: Original Report Equipment Type: FM Transmitter Test Engineer: Kamn Hu Report No.: RSZ06030206a Test Date: March 16, 2006-May 12, 2006 Reviewed By: Chris Zeng Prepared By: Bay Area Compliance Lab Corp. (ShenZhen) 6/F, the 3rd Phase of WanLi Industrial Building, ShiHua Road, FuTian Free Trade Zone, ShenZhen, Guangdong 518038, P.R.China Tel: +86-755-33320018 Fax: +86-755-33320008 SHENZHEN XINFUDA ELECTRONIC CO.,LTD FCC ID: T28SZFDADZGS Report # RSZ06030206a .doc Page 2 of 20 FCC Part 15.239 Test Report 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.............................................................................................................................................................3 LOCAL SUPPORT EQUIPMENT LIST AND DETAILS........................................................................................................4 EXTERNAL I/O CABLE..................................................................................................................................................4 SYSTEM TEST CONFIGURATION ..........................................................................................................................5 JUSTIFICATION.............................................................................................................................................................5 EUT EXERCISE SOFTWARE..........................................................................................................................................5 SPECIAL ACCESSORIES.................................................................................................................................................5 EQUIPMENT MODIFICATIONS.......................................................................................................................................5 CONFIGURATION OF TEST SETUP.................................................................................................................................6 BLOCK DIAGRAM OF TEST SETUP................................................................................................................................6 SUMMARY OF TEST RESULTS ...............................................................................................................................7 §15.209/§15.35/§15.239- RADIATED EMISSION......................................................................................................8 MEASUREMENT UNCERTAINTY....................................................................................................................................8 EUT SETUP..................................................................................................................................................................8 EMI TEST RECEIVER SETUP.........................................................................................................................................9 TEST EQUIPMENT LIST AND DETAILS...........................................................................................................................9 TEST PROCEDURE........................................................................................................................................................9 CORRECTED AMPLITUDE & MARGIN CALCULATION...................................................................................................9 TEST RESULTS SUMMARY............................................................................................................................................9 TEST DATA................................................................................................................................................................10 PLOT(S) OF TEST DATA..............................................................................................................................................11 §15.239 –BAND-EDGE AND OCC. B/W ..................................................................................................................18 MEASUREMENT UNCERTAINTY..................................................................................................................................18 TEST PROCEDURE......................................................................................................................................................18 TEST EQUIPMENT LIST AND DETAILS.........................................................................................................................18 TEST DATA.......................................................................................................…

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Test Setup Photos Radiated Emission - Front View Radiated Emission - Rear View