FSQFK-861RF Wireless Keyboard

Information to User Notice 1 You are cautioned that changes or modifications not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment. Notice 2 This equipment has been tested and found to comply with the limits for a Class B 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.

C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 APPENDIX 2 EXTERNAL PHOTOGRAPHS OF EUT C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Front View of EUT Back View of EUT

FCC ID LABEL FORMAT AND LOCATION Applicant: FOCUS ELECTRONIC CO ., LTD. FCC ID: FSQFK-861 FCC ID: FSQFK-861 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 ID LABEL AREA

C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Page 22 Rev. 00 APPENDIX 3 INTERNAL PHOTOGRAPHS OF EUT C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Page 23 Rev. 00 Internal of EUT – Open Internal of EUT – Front C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Page 24 Rev. 00 Internal of EUT – Back

Wireless Keyboard FK-861 Transmitter 1. MCU will scan Key data, encoder and ID/reset key. If any signal change come from above mention. It will turn convert the data package with checking the low battery status data, and prepare for modulate to the reference x’tal directly. 2. When MCU received the signal from Key data, encoder and ID/reset key. Firstly, MCU will turn on the RF power,( e.g.27.045MHz) 3. The reference x’tal will support the exact 3 rd tone of the exact frequency( e.g.27.045MHz) 4. Buffer amplifier is to change the impedance between oscillating circuit(high impedance) to low impedance. 5. (PA)Power amplifier is to support enough current to drive the antenna. 6. Matching circuit is to match the impedance between PA and antenna. Wireless Keyboard FK-861 Receiver 1. When the PC power on, the receiver will start the PnP process of USB. 2. MCU will turn on the RF power of RF. 3. When the RF signal comes(e.g. 27.045MHz for Keyboard),the signal will direct to the mixer. 4. The RF signal is pass through mixer. It means that the original signal (27.045MHz from Keyboard) will down convert to 455KHz from Keyboard. 5. U2 filter are perform a filtering function of 455KHz. 6. 455KHz resonator will perform the local oscillator (LO)function. 7. When the U2(455KHz) pass through discriminator, the demodulating signal will come out. We called it base band signal of mouse or keyboard. 8. AF AMP will work as a data slicer, it amplify the signal to square wave digital signal. 9. This digital signal will send to MCUs. MCUs will sample the signal to check it is valid or not. 10. If the signal it valid, MCUs will convert the signal to the USB interface to PC. No-matter is exact activity of Keyboard. 11. MCUs also scan the reset lock key to check user has to press this key or not.

C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Page 1 of 17 Rev. 00 ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT INTENTIONAL RADIATOR CERTIFICATION TO FCC PART 15 SUBPART C REQUIREMENT OF RF WIRELESS KEYBOARD MODEL No.: FK-861 BRAND NAME: FOCUS FCC ID: FSQFK-861 REPORT NO: 030005-RF-ID ISSUE DATE: Jan. 15, 2003 Prepared for FOCUS ELECTRONIC CO .,LTD. 5F., 306, Sec. 4, Chengteh Rd., Taipei, Taiwan, R.O.C. Prepared by C&C LABORATORY, CO., LTD. #B1, 1 st Fl., Universal Center, No. 183, Sec. 1, Tatung Rd., Hsi Chih, Taipei Hsien, Taiwan, R.O.C. TEL: (02)8642-2071~3 FAX: (02)8642-2256 C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Page 2 Rev. 00 Table of Contents 1. GENERAL INFORMATION ............................................................................................... 3 1.1 P RODUCT D ESCRIPTION ........................................................................................................................ 3 1.2 R ELATED S UBMITTAL ( S ) / G RANT ( S )................................................................................................... 3 1.3 T EST M ETHODOLOGY ............................................................................................................................ 3 1.4 T EST F ACILITY ...................................................................................................................................... 3 1.5 M EASUREMENT U NCERTAINTY ............................................................................................................. 4 1.6 S PECIAL A CCESSORIES .......................................................................................................................... 4 1.7 EQUIPMENT MODIFICATIONS................................................................................................................ 4 2. SYSTEM TEST CONFIGURATION .................................................................................. 5 2.1 EUT C ONFIGURATION ........................................................................................................................... 5 2.2 EUT E XERCISE ...................................................................................................................................... 5 2.3 T EST P ROCEDURE .................................................................................................................................. 5 2.4 L IMITATION ........................................................................................................................................... 5 2.5 C ONFIGURATION OF T ESTED S YSTEM ................................................................................................... 7 3. SUMMARY OF TEST RESULTS ....................................................................................... 9 4. DESCRIPTION OF TEST MODES .................................................................................... 9 5. CONDUCTED EMISSIONS TEST ................................................................................... 10 5.1 M EASUREMENT P ROCEDURE : ............................................................................................................. 10 5.2 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ..................................................................... 10 5.3 M EASUREMENT E QUIPMENT U SED : .................................................................................................... 10 5.4 M EASUREMENT R ESULT : .................................................................................................................... 10 5.5 CONDUCTED MEASUREMENT PHOTOS:............................................................................................... 10 6. RADIATED EMISSION TEST .......................................................................................... 11 6.1 M EASUREMENT P ROCEDURE ............................................................................................................... 11 6.2 T EST SET-UP (B LOCK D IAGRAM OF C ONFIGURATION ) ..................................................................... 12 6.3 MEASUREMENT EQUIPMENT USED: .................................................................................................... 13 6.4 F IELD S TRENGTH C ALCULATION ........................................................................................................ 13 6.5 M EASUREMENT R ESULT ..................................................................................................................... 14 7. OCCUPIED BANDWIDTH................................................................................................ 16 7.1 MEASUREMENT PROCEDURE............................................................................................................... 16 7.2 T EST SET-UP (B LOCK D IAGRAM OF C ONFIGURATION ) ..................................................................... 16 7.3 M EASUREMENT E QUIPMENT U SED : .................................................................................................... 16 7.4 MEASUREMENT RESULTS:................................................................................................................... 16 C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Page 3 Rev. 00 1. GENERAL INFORMATION 1.1 Product Description The FOCUS ELECTRONIC CO., LTD. Model: FK-861 (referred to as the EUT in this report) The EUT is an short range, lower power, RF Wireless Keyboard designed as an " Input Device. It is designed by way of utilizing the FSK modulation achieves the system operating. A major technical descriptions of EUT is described as following: A). Operation Frequency: 27.045 MHz, one channel. B). Modulation : Frequency Shifting Key (FSK) Modulation C). Antenna Designation: Non-User Replaceable (Fixed) D). Power Supply: 3 Vdc by AAA *2 battery. 1.2 Related Submittal(s) / Grant (s) This su…

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C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 APPENDIX 1 PHOTOGRAPHS OF SET UP C&C Laboratory Co. Ltd. REPORT NO: 030005-RF-ID FCC ID: FSQFK-861 DATE: 1/15/2003 Radiated Emission Setup Photos