TM4TMP3FTFDGFM Transmitter

1 2 3 4 56 ABCD 6 5 4 3 2 1 D CBA DC/DCBL8530-3.3V BT13V 3.3V MCUEM78153BH141 7 HT1621 CK DA CE CK DA CE FM ANT LCD 123 CP1HEADER 3 R_INL_IN FM OUT 7.6M Hz 24C02 CKDA UP DN PO M1 M2 M3 M4 TMP3FT-F(DG)

Xing Liu Von: Generic Office of Engineering Technology [[email protected]] Gesendet: Dienstag, 15. Mai 2007 19:51 An: [email protected] Betreff: Response to Inquiry to FCC (Tracking Number 382005) Seite 1 von 1 16.05.2007 Inquiry: This application is an audio FM transmitter operationg on 88.1 to 107.9 MHz, under scope A1, Part 15.239. It belongs to Category 1 - 15.239 FM transmitter of the permit but ask procedure. The test has been finished and can prove that the application complies all the relative requirments of Part 15C (see attachment). The additonal information for FM transmitters is also provided (see attachment). Response: Go ahead and file the grant. Submit a copy of this inquiry into the filing. Ensure all exhibits comply with FCC rules and policies. Do not reply to this message. Please select the Reply to an Inquiry Response link from the OET Inquiry System to add any additional information pertaining to this inquiry.

ID label & location info. ID label location FCC ID: TM4TMP3FTFDG

1) How does this device operate? The FM transmitter is a FM stereo transmitting configuration, which radiates FM wave on the air by modulating the any required signal to the carrier signal. The transmission frequency is set 88.1MHz to 107.9MHz, frequency interval is 0.1MHz. Operating Instructions: 1. Install two AAA batteries according to the indicated poles in the battery box. 2. Connect the audio cable of the transmitter to the audio-out or earphone jack of the sound source equipment(such as iPod, MP3, CD player) 3. Hold power switch for 6 seconds to turn on/off the power. 4. Turn left or right to select suitable FM frequency channel. 5. Press 3 seconds to save frequency setting. 6. Adjust the volume of the sound source equipment properly. 7. During the transmission, the transmitter will automatically be turned off, when it is not detected any audio signal frequency within 45 seconds. 2) Provide information on the device and its antenna. The transmitter has seven parts: transmitter body, audio cable, power keystoke, frequency select knob, frequency saving keystoke, LCD display and battery box. The transmitter utilizes a wire as dipole antenna. Antenna 3) How is it installed? The transmitter is powered by two AAA batteries. It can be connected to audio source headphone dock. 4) What test procedure was used? ANSI C63.4, the test was performed in a semi-anechoic chamber. 5) If tested in a car, how was it configured/tested? Not tested in a car, it was tested in a semi-anechoic chamber. The EUT has been additionally tested / verified and does work in a typical car. 6) Was the tuning range properly verified? The test lab should indicate in the report that the tuning controls were manually adjusted to verify maximum tuning range. The FM transmitter is a FM stereo transmitting configuration, which radiates FM wave on the air by modulating the any required signal to the carrier signal. The transmission frequency is set from 88.1 to 107.9MHz, frequency interval is 0.1MHz. We selected the low (88.1MHz) mid (98.1MHz) and High (107.9MHz) working frequency to measure the frequency. tune the knob to select the transmission frequency . We have indicated the testing in the test report, see clause 6. 7) Was the bandwidth properly tested with maximum audio input? The test was performed with the maximum audio input. And play typical audio signal (music song). We have indicated the operating condition in the test report, see clause 5.3.

Operation Description TMP3FT-F(DG) Operation Frequency Range: 88.1M-107.9MHz Modulation Type: FM 1. The device is supplied by 2 batteries. 3 V is increased to 3.3 V by IC U5 (BL8530) to supply MCU U1 (EM78153). The device is standby. 2. Press key “POWER” longer than 3 seconds, MCU send a signal 0 level to an electronic switch to switch on the device. MCU derives memory data from U3 (24C02) and send signals to FM IC U4 (BH1417) via pins DA, CK and CE. Meanwhile, send signals to display IC U2 (HT1621). 3. IC U2 (HT1621) displays frequency on LCD. 4. IC U4 (BH1417) works. Base frequency is 7.62 MHz produced by oscillator. External LC produces a frequency. After comparison, MCU produces a frequency to be transmitted by coupling capacitor C10, match network and antenna. 5. Audio signal is input to IC U4 (BH1417) via match network. The audio signal is modulated and transmitted. 6. MCU monitors audio input by circuit of (Q2, Q3, R5, R6, R8, R9, R10, C3, C4, D2). If detecting no input after 45 seconds, MCU will shut off the device and display “OFF” on LCD. If audio input, MCU will recover to working mode.

P60/INT 10 P61 9 P62 8 P63 7 P64 6 P65 5 P66 3 P67 2 P50 1 P51 14 P52 13 P53 12 VSS 11 VCC 4 U1 EM78153 C2 104 Q1 8050 D1 LED CS 1 SK 2 DI 3 DO 4 GND 5 ORG 6 NC 7 VCC 8 U3 24C02A 3.3V 3.3V 3.3v P8VCC R28 2.2K C7 1000P C36 222 C22 27P C21 27P L5 56nH C23 68P R21 10K C20 503 R11 10K R17 2.2ohm C8 1000P C9 1000P 1 2 3 CP1 HEADER 3 R25 10K C17 3.3uF + C33 33uF/6.3v C34 330P R27 2.2K R26 10K R29 2.2K C32 473 C11 392 D6 KV-1471E C19 503 Q5 3904 R24 100ohm C37 8P R22 18K R12 10K C15 3.3uF C13 150P C35 150P X1 7.6M BT1 BATT C12 392 C101000P C16 3.3uF C14 150P R23 4.7K ANT1 FM ANT DACKCE DA CK CE P8VCC P8VCC SW1 J1 DC JACK R3 51K P8VCC C18 471 C38 39P R1 1K C6 1uF R14 3.3K C5 1uF R13 3.3K R16 * R_IN 1 R_PE 2 R_LPF 3 FILTER 4 CS_OUT 5 GND 6 PLL PD_OUT 7 VCC 8 RF_OSC 10 RF_GND 11 RF_OUT 12 L_IN 24 L_PE 23 L_LPF 22 PS_ADJ 21 MUTE 20 DATA 19 CLK 18 CE 17 X_OUT 15 X_IN 14 PLL_VCC 13 N.C 9 N.C 16 U4 BH1417 L_IN R10 330K C4 104 R9 10M R8 47K C3 1uF R6 680 R5 100K 3.3V Q2 9014 Q3 9014 D2 4148 L_IN A_CHK A_CHK M4 P_ON/OFF M1 M2 M3 UP DN DA CK P_SW CK CE R2 47K CS 1 WR 2 DATA 3 VSS 4 VLCD 5 VDD 6 LED 7 COM0 8 COM1 9 COM2 10 COM3 11 SEG31 12 SEG30 13 SEG29 14 SEG28 15 SEG27 16 SEG26 17 SEG25 18 U2 HT1621-A R4 1K COM1 COM2 COM3 COM4 COM1 COM2COM3 COM4 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 COM3 4 SEG2 6 SEG3 7 SEG4 8 SEG5 9 SEG6 10 SEG7 11 SEG1 5 COM0 1 COM1 2 COM2 3 LCD1 LCD LED C28 104 + C25 47uF/6.3V + C24 4.7uF D5 1N5817 3 1 2 U5 8530 L2 47uH(R< 0.5) + C26 22uF/6.3V P8VCC 3.3V L4 47uH L3 47uH C29 104 C30 103 Q4 9015 BATT R20 3.3k P_SW + C27 100uF/6.3V 3.3v R30 51K 3.3v R19 39K 3 1 2 U6 HT7033 LED LED R15 * R18 0ohm C39 33P L1 1uH L7 15uH

Page 1 of 29 FCC ID: TM4TMP3FTFDG ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE20070939 FCC CERTIFICATION On Behalf of Teleway Industrial Ltd. Full Frequency FM Transmitter Model No.: TMP3FT-F(DG) FCC ID: TM4TMP3FTFDG Prepared for : Teleway Industrial Ltd. Address : 5/F., Block 40, Ma Jia Long Industrial Area, Nanshan District, Shenzhen, 518052, Guangdong Province, China Prepared by : Accurate Technology Co., Ltd. Address : F1, Bldg. A, Changyuan New Material Port, Keyuan Rd. Science & Industry Park, Nanshan, Shenzhen, Guangdong P.R. China Tel: (0755) 26503290 Fax: (0755) 26503396 Report Number : ATE20070939 Date of Test : April 21, 2007 Date of Report : April 24, 2007 Page 2 of 29 FCC ID: TM4TMP3FTFDG ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE20070939 TABLE OF CONTENTS Description Page Test Report Certification 1. GENERAL INFORMATION .......................................................................................................... 4 1.1. Description of Device (EUT)....................................................................................................................4 1.2. Description of Test Facility ......................................................................................................................4 1.3. Measurement Uncertainty.........................................................................................................................4 2. MEASURING DEVICE AND TEST EQUIPMENT ..................................................................... 5 3. RADIATED EMISSION FOR FCC PART 15 SECTION 15.239(C)........................................... 6 3.1. Block Diagram of Test Setup....................................................................................................................6 3.2. The Emission Limit for section 15.239(c) ................................................................................................6 3.3. Configuration of EUT on Measurement ...................................................................................................7 3.4. Operating Condition of EUT ....................................................................................................................7 3.5. Test Procedure ..........................................................................................................................................7 3.6. The Field Strength of Radiation Emission Measurement Results ............................................................8 4. FUNDAMENTAL RADIATED EMISSION FOR FCC PART 15 SECTION 15.239(B) ........ 11 4.1. Block Diagram of Test Setup..................................................................................................................11 4.2. The Emission Limit For Section 15.239(b) ............................................................................................11 4.3. EUT Configuration on Measurement .....................................................................................................12 4.4. Operating Condition of EUT ..................................................................................................................12 4.5. Test Procedure ........................................................................................................................................12 4.6. The Emission Measurement Result ........................................................................................................13 5. OCCUPIED BANDWIDTH FOR FCC PART 15 SECTION 15.239(A) ................................... 16 5.1. The Requirement For Section 15.239(a).................................................................................................16 5.2. EUT Configuration on Measurement .....................................................................................................16 5.3. Operating Condition of EUT ..................................................................................................................16 5.4. Test Procedure ........................................................................................................................................16 5.5. Test Result ..............................................................................................................................................17 6. TUNING RANGE ........................................................................................................................... 18 6.1. The Requirement For Section 15.239 .....................................................................................................18 6.2. EUT Configuration on Measurement .....................................................................................................18 6.3. Operating Condition of EUT ..................................................................................................................18 6.4. Test Procedure ........................................................................................................................................18 6.5. Test Result ..............................................................................................................................................19 APPENDIX I ( TEST CURVES) (9 pages) Page 3 of 29 FCC ID: TM4TMP3FTFDG ACCURATE TECHNOLOGY CO. LTD REPORT NO. ATE20070939 Test Report Certification Applicant : Teleway Industrial Ltd. Manufacturer : Shenzhen De Ying Electronics Co., Ltd. EUT Description : Full Frequency FM Transmitter (A) MODEL NO.: TMP3FT-F(DG) (B) SERIAL NO.: N/A (C) POWER SUPPLY: DC 3.0V (AAA Battery ̄2) Measurement Procedure Used: FCC Rules and Regulations Part 15 Subpart C Section 15.239: 2006& ANSI 63.4: 2003 The device described above is tested by ACCURATE TECHNOLOGY CO. LTD to determine the maximum emission levels emanating from the device. The maximum emission levels are compared to the FCC Part 15 Subpart C Section15.239 limits. The measurement results are contained in this test report and ACCURATE TECHNOLOGY …

Text truncated - open the document above for the full version.