VO8-5230BLUETOOTH HEADSET(CLASS 2)

Guangzhou Liwei Electronics Co., LTD. FCC ID:VO8-5230 POWER OF ATTORNEY December 21, 2008 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize Bontek Compliance Testing Laboratory Ltd. (Tony Wu) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Bontek Compliance Testing Laboratory Ltd. (Tony Wu) on our behalf shall have the same effect as acts of our own. This authorization expires on February 08, 2009. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Guang zhou Liwei Electronics,Co.,LTD. are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Guang zhou Liwei Electronics,Co.,LTD ------------------------------- R&D Department Engineer

External Photographs EUT - Front View EUT - Rear View

FCC ID Label Sample for FCC ID: VO8-5230 FCC ID: VO8-5230 Made in China

Internal Photographs EUT - Uncovered View Adapter Whole View EUT - PCB View

Circuit Description Bluetooth is a short-range wireless communication technology. The design applied is in international identification ISM (Industrial Scientific and Medical) frequency bandwidth environment that is 2.4GHz~2.48GHz bandwidth. The BTH820 Bluetooth Headset is a wireless mono headset manufactured with the Latest Bluetooth technology, complied Bluetooth specification v2.0. Within a range of 10 meters, BTH820 Bluetooth headset can connect to other Bluetooth devices which have built-in audio gateway, such as Mobile Phone, Desktop, Notebook Computer or PDA etc.. The Headset consists of the Changer Circuit, 1.8V Switched mode Regulator, Bluetooth Headset Module IS1601G, Audio Speaker Circuit, Microphone Bias, Status indicating LED and Three Multifunction Buttons for power on/off, pairing, call control, Volume Control etc. Charger Circuit The Headset are often powered internally using a 3.7 volt Lithium-lon Polymer with short circuit protection and a capacity of 120mAh, The battery charger is based on the U2, U2 has a VCC input for the power source from an external 6 volt DC supply. An output to the battery, Battery volt is for Microphone Bias circuit and Bluetooth Module power 1.8V DC/DC circuit. Bluetooth module IS1601G Th e IC/CPU is a Class 2 Bluetooth sub-system using BlueCore2-Headset ROM chipset from leading Bluetooth chipset supplier ISSC with a maximal output power of less than 4dBm. The module block includes Bluecore02 IC, EEPROM, Band pass Filter and Crystal for clock. The RF circuit includes the antenna matching components and a ceramic antenna welded in the circuit board . The crystal provides the whole circuit the standard reference frequency of 16MHz. There is no external ground connection. the ground is only that of the printed circuit board. Switched mode 1.8 Volt regulator For optimum efficiency, a switch mode power supply provides the 1.8V for digital, analogue and RF portions of the device. This converter is powered from a Li-polymer battery.

123456 A B C D 654321 D C B A Title NumberRevisionSize Orcad C Date:1-Dec-2008 Sheet of File:E:\工作文件\PCB\蓝牙\issc\单芯片\IS1611N\IS1611N\5230.DdbDrawn By: PWREN SDA HCI_TXD P W R E N HCI_RXD DCIN SCL DCIN MFB MFB 1 2 R41K 1 2 R26 1K A0 1 A1 2 A2 3 GND 4 SDA 5 SCL 6 WP 7 VCC 8 U4 AT24C08 C20 330nF 1 2 R2 2K4 12 D4 BLUE C10 1pF C15 15pF SW1 Switch 1 2 R73K3 C6 2.7nH 12 R1 1K C17 1uF 12 D5 CDSU400B 12 R16 1K C221uF 1 2 R5 10K C16 1uF 3 21 Q1 MMBT3904 C3 1uF G D S D 3 S 2 G 1 Q2 AF2301P R19 10K VOLup 1 PWRen 2 VDD_IO 3 MFB 4 VOLdown 5 GND 6 HCI_RXD 7 HCI_TXD 8 SCL 9 SDA 10 VDD_CORE 11 BAT_IN 12 A V D D _ A D C 1 3 A G N D _ A D C 1 4 L I N E _ I N + 1 5 L I N E _ I N - 1 6 B G _ R 1 7 B G _ R E F 1 8 L I N E _ O U T + 1 9 L I N E _ O U T - 2 0 A G N D _ D A C 2 1 A V D D _ D A C 2 2 L D O _ O U T 2 3 L D O _ I N 2 4 PLL_18 36 XO_N 35 XO_P 34 DIG18 33 VCC_DIG 32 EAN 31 DCin 30 GND 29 PWM 28 TEST 27 VDD_CORE 26 RST_N 25 C H G s t a t e 4 8 L E D 0 4 7 L E D 1 4 6 T P 4 5 N C 4 4 N C 4 3 N C 4 2 P A I R I N G 4 1 R T X 4 0 R X 3 9 N C 3 8 V C C _ R F 3 7 G N D p a d 4 9 U3 IS1611N-xxx C2 4.7uF 3 2 1 D1 CDSH3-222 1 2 R 1 3 2 K 4 1 ANT1 ANT-PIFA C1 4.7uF 41 32 X1 16MHZ-CL=12pf C141uF 1 2 C7 NP C11 1uF 12 R10 47K 12 D2 CDSU400B 12 R11 4.7K VIN 1 EN 3 BP 4 VOUT 5 GND 2 U2 XC6204B282MR C13 1uF C9 2pF C18 1uF R9 330R 1 2 R17 2K4 C5 NC 1 2 R3 18K C12 15pF 12 D3 RED CHRG 1 GND 2 BAT 3 VCC 4 PROG 5 U1 EUP8054 C23 10uF C8 NP C24 0.1uF 1 2 R27 20K C21 330nF 1 2 L1 2.7nH 12 R8 330R C 1 9 1 u F C4 4.7uF 12 R12 3.3K 1 2 R6 3K3 GND GND 2V7 2V7 GND GND GND GND 2V7 GND 2V7 VBAT GND GND GND GND GND GND GND 2V7 GND 1V8 GND 2V7 GND 1V8 GND GND GND 1V8 2V7 1V8 GNDGND 1V8 2V7 GND 5V 2V7 GND GND 5V GND GND GND GND GND GND GND GND GND VBAT GND GND BAT+ VBAT GND M I C + MIC M I C - SPK RF PATH: 1. Components need as close as possible 2. PCB is 4-layer FR4, RF path need to use 50 ohm impedance (15mil line width). SPK+ SPK- 0603X5R 5V POWER BAT+ BAT- BATTERY R25 1.5R 1 2 J? TP2 TP1 TP4 TP3 TP5 TP6 TP7 TP8 TP9 TP10 TP11TP12 TP13 C25 0.1uF GND R21 TP14 GND 5230耳机原理图

Test Report of FCC Part 15 C for FCC Certificate On Behalf of Guangzhou Liwei Electronics Co.,LTD. Product Description: Bluetooth Headset(Class 2) Brand Name: CCK Model No.: 5230 FCC ID: VO8-5230 Prepared for: Guangzhou Liwei Electronics Co., LTD. NO.33 Zhenzhong North Rd., ShenShan Ind. Park, BaiYun District, GuangZhou, GuangDong, China Prepared by: Bontek Compliance Testing Laboratory Ltd 1/F, Block East H-3, OCT Eastern Ind. Zone, Qiaocheng East Road, Nanshan, Shenzhen, China Tel: 86-755-86337020 Fax: 86-755-86337028 Report No.: BCT08LR-912E Issue Date: December 20, 2008 Test Date: December 03~20, 2008 Test by: Reviewed By: Kendy Wang Tony Wu Report No.:BCT08LR-912E Page 2 of 52 FCC ID: VO8-5230 TABLE OF CONTENTS 1. GENERAL INFORMATION.................................................................................................................................... 4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT).........................................................................4 1.2 RELATED SUBMITTAL(S) / GRANT (S)..................................................................................................................4 1.3 TEST METHODOLOGY...........................................................................................................................................4 1.4 TEST FACILITY......................................................................................................................................................5 2. SYSTEM TEST CONFIGURATION......................................................................................................................6 2.1 EUT CONFIGURATION..........................................................................................................................................6 2.2 EUT EXERCISE....................................................................................................................................................6 2.3 GENERAL TEST PROCEDURES.............................................................................................................................6 2.4 LIST OF MEASURING EQUIPMENTS USED............................................................................................................7 3. SUMMARY OF TEST RESULTS...........................................................................................................................8 4. ANTENNA REQUIREMENT...................................................................................................................................9 4.1 STANDARD APPLICABLE.......................................................................................................................................9 4.2 ANTENNA CONNECTED CONSTRUCTION..............................................................................................................9 5. TEST OF CONDUCTED EMISSION...................................................................................................................10 5.1 APPLICABLE STANDARD.....................................................................................................................................10 5.2 TEST SETUP DIAGRAM.......................................................................................................................................10 5.3 TEST RESULT.....................................................................................................................................................10 6. TEST OF HOPPING CHANNEL BANDWIDTH................................................................................................13 6.1 APPLICABLE STANDARD.....................................................................................................................................13 6.2 EUT SETUP........................................................................................................................................................13 6.3 TEST EQUIPMENT LIST AND DETAILS.................................................................................................................13 6.4 TEST PROCEDURE..............................................................................................................................................13 6.5 TEST RESULT......................................................................................................................................................13 7. TEST OF HOPPING CHANNEL SEPARATION...............................................................................................17 7.1 APPLICABLE STANDARD.....................................................................................................................................17 7.2 EUT SETUP........................................................................................................................................................17 7.3 TEST EQUIPMENT LIST AND DETAILS.................................................................................................................17 7.4 TEST PROCEDURE..............................................................................................................................................17 7.5 TEST RESULT.....................................................................................................................................................17 8. TEST OF NUMBER OF HOPPING FREQUENCY...........................................................................................21 8.1 APPLICABLE STANDARD.....................................................................................................................................21 8.2 EUT SETUP........................................................................................................................................................21 8.3 TEST EQUIPMENT LIST AND DETAILS........................................................................................................…

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