UHIVRFM8MP3 FM TRANSMITTER

User Manual 1. Start the Vehicle’s engine without the VRFM8BLN in the cigarette lighter socket. Starting the engine with the VRFM8BLN pluged in may cause it damage. Then plug the 12 Voltage end of the VRFM8BLN Modulator into the vehicle’s 12 Voltage cigarette lighter socket or 12 Volt Power Outlet. 2. The Red Power LED will light up indicating the unit has power and the LED for the radio frequency will show 88.1, the first FM pre-set radio frequency. 3. Insert a USB flash drive with MP3/WMA audio files that do not have Digital Rights Management with a bitrate of 128 Kb per second or less. Save the files on the disk “loose” and not in folders. 4. Press the Channel Button to select one of the following 12 FM Presets that is not being used by any local radio stations. VRFM8BLN remembers the last broadcast frequency used 88.1, 88.3, 88.5, 88.7, 88.9, 106.7, 106.9, 107.1, 107.3, 107.5, 107.7, 107.9. 5. Press the Play/Pause/Shuffle button to play the first MP3/WMA file on the flash drive. The Red LED will flash to indicate the MP3/WMA player is working. Press and hold the Play/Pause/Shuffle to play files in shuffle mode, files will play at random in shuffle mode. 6. Press the Next Track/Volume Up Button once to advance the to the next track. Pressing and holding this button will increase the volume of the MP3/WMA files being played. Too high a volume will cause distortion. If you hear distortion, decrease the volume on the VRFM8BLN, and then increase the radio’s volume. 7. Press the Previous Track/Volume Down Button once to return to the previous MP3/WMA file played. Pressing and holding this button will decrease the volume of the MP3/WMA file being played. 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. FCC NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user's authority to operate the equipment.

EUT - Front View EUT - Back View

FCC ID Label Sample for Model: VRFM8 FCC ID: UHIVRFM8

FCC ID Label 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. The Label must not be a stick-on paper. The Label on these products must be permanently affixed to the product and readily visible at the time of purchase and must last the expected lifetime of the equipment not be readily detachable. Proposed Label Location on EUT EUT Bottom View/proposed FCC Mark Location FCC ID: UHIVRFM8

PCB1-Front View PCB1-Back View PCB2-Front View PCB2-Back View PCB3-Front View PCB3-Back View

Circuit Description for VRFM8 1. Insert USB disk into the Player, plug player into car cigarette lighter for power; 2. Decoding the data of USB disk by USB host decoding circuits, then transmitting the audio signals to L and R channels of FM transmitter by DA converter; 3. The other circuit will control frequency in frequency controlling circuit of FM transmitter; 4. FM transmitter will lock the working frequency of USB host by di-frequency and comparing the periphery frequency 7.6MHz; 5. The audio signals which are provided by L and R channels compositely handled by FM transmitter, then added in the carrier frequency signals and amplified by amplifier, at last transmitted to FM antenna.

匡拒 S_DATA 1 S_EN 2 S_CLK 3 MODE 4 DVDD2P5V 5 XT_IN 6 XT_OUT 7 AVDD1 8 AVDD5 9 NC 10 VDD3 11 CP2_OUT 12 VCO_P 13 VCO_M 14 VDD4 15 REF_R 16 EN 17 PA_VDD 18 PA_OUT 19 IN_L 20 IN_R 21 VDD5 22 NC 23 NC 24 U1SCFMT80110C SPI_DATA SPI_EN SPI_CLK VCC C160.1UF Y17.6MHz C315P C415P C180.1UF VCC C80.47UF C134.7UF R2470R L2270NH C10.1uF VCC C140.1uF VCC R1200K C60.1UF VCC IN_RIN_L C1233PF L1180nH VCC L3150NH C2747PF C2847PF +5V R647R D13.3V C70.01UF C17100UF/6.3V VCC L510nH C200.1UF NC5 R7 D- D+ R8 C19 USB L610uH J3 IN_LIN_R L44.7uH Q19018 R533k L7100nH VCC C2168PF C150.01UF R14471 R112.2K C256800P C111500P R451K C9223 C23102 R13471 R92.2K C246800P C21500P R351K C10223 C22102 AUDIO_LAUDIO_R AUDIO_RAUDIO_L 12345 RLGNDGND+5V R L 12345 SPI_DATASPI_ENSPI_CLK GNDGND 67 D-D+

FCC TEST REPORT Page 1 of 27 FCC ID : UHIVRFM8 Applicant : Roadmaster USA Corp. Address : 41 James Way Eatontown, NJ 07724 Equipment Under Test (EUT) : Product : MP3 FM Transmitter Model No. : VRFM8 Standards : FCC 15 Subpart C Paragraph 15.239 Date of Test : December 8, 2006 Test Engineer : Tiger Su Reviewed By : PERPARED BY: Waltek Services (Shenzhen) Co., Ltd. 8C,West Tower, Aidi Building, No.5003 Binhe Rd, Futian District, Shenzhen518045, Guangdong, China. Tel: 86-755-83551033 Fax: 86-755-83552400 Roadmaster USA Corp. FCC ID: UHIVRFM8 Page 2 of 27 2 Contents Page 1 COVER PAGE..........................................................................................................................................................1 2 CONTENTS ..............................................................................................................................................................2 3 TEST SUMMARY....................................................................................................................................................5 4 GENERAL INFORMATION..................................................................................................................................6 4.1 CLIENT INFORMATION............................................................................................................................................6 4.2 GENERAL DESCRIPTION OF E.U.T...........................................................................................................................6 4.3 DETAILS OF E.U.T. .................................................................................................................................................6 4.4 DESCRIPTION OF SUPPORT UNITS...........................................................................................................................6 4.5 STANDARDS APPLICABLE FOR TESTING..................................................................................................................6 4.6 TEST FACILITY........................................................................................................................................................7 4.7 TEST LOCATION......................................................................................................................................................7 5 EQUIPMENT USED DURING TEST ...................................................................................................................8 COMMON USED EQUIPMENT .....................................................................................................................................8 6 CONDUCTED EMISSION TEST ..........................................................................................................................9 6.1 TEST EQUIPMENT....................................................................................................................................................9 6.2 TEST PROCEDURE...................................................................................................................................................9 6.3 CONDUCTED TEST SETUP.....................................................................................................................................10 6.4 EUT OPERATING CONDITION...............................................................................................................................10 6.5 CONDUCTED EMISSION LIMITS.............................................................................................................................11 7 RADIATION EMISSION TEST...........................................................................................................................12 7.1 TEST EQUIPMENT..................................................................................................................................................12 7.2 MEASUREMENT UNCERTAINTY.............................................................................................................................12 7.3 TEST PROCEDURE.................................................................................................................................................12 7.4 RADIATED TEST SETUP.........................................................................................................................................13 7.5 SPECTRUM ANALYZER SETUP...............................................................................................................................13 7.6 CORRECTED AMPLITUDE & MARGIN CALCULATION............................................................................................14 7.7 SUMMARY OF TEST RESULTS................................................................................................................................14 7.8 EUT OPERATING CONDITION...............................................................................................................................15 7.9 RADIATED EMISSIONS LIMIT.................................................................................................................................15 7.10 RADIATED EMISSIONS TEST RESULT................................................................................................................16 8 BAND EDGE ..........................................................................................................................................................18 8.1 TEST EQUIPMENT..................................................................................................................................................18 8.2 TEST PROCEDURE.................................................................................................................................................18 8.3 BAND EDGE TEST RESULT.......................................................................................................................…

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Radiation Emission Test View