FCC ID: MG3-4012 ViewSonic Tweety RF Remote Control

P u t t in g You in Con t r ol of Tod ay 's Tech n ology ViewSonic Tweety RF Remote Product Specification Work Order: 50-954 November 05, 2001 Rev. 2.9A URCs: 4012B00 Author: Jason Etter Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 1 of 63 Revision History Product Revision History Specification Rev A B C D Date 12/6/00 12/20/00 01/12/01 02/05/01 E 02/13/01 Rev1.0 Rev 1.1 Software Ver Date Sect. 1.1 3.2.4 3.3.2 3.3.3 4 5 6.1.2 6 6.1.6 7.4 1.0 6.2 ALL 3.3.2, 3.2.4, 3.2.5 1.1 3.1.1 3.1.2 3.1.3 3.2.4 3.3.1 3.3.2 3.3.3 3.3.5 6 7.4 8.6 1.1 3.2.1/2 3.2.4 3.3 3.3.1 3.3.3 3.3.5 3.3.9 4 6 7.4 10.1 Update Description By JE JE JE JE JE JE JE Initial Draft Added Network Description Added Make and Break data for MUTE Revised ID Setup Revised RF Channel Change Added table on RF Transmission Added Hardware Interface Table Revised RF Channel Frequency table and added frequency control information. Revised UEI key Data Packet information Added Serial Input Timing Diagram Added Battery life information and table Changed Part Number reflect SOP package Changed Varapoint Data to reflect the Data in section 6.0 Per new NMB Specification and Bill Browns Comments Programming Instructions per Anthonys request Added these sections per Anthonys request. Updated IC package and part number, added comment on poly-

dome keys. Updated IC Package Type Referenced spec section for Mfg. Reset, SETUP, and Stuck Key Time-out, removed visible LED for SW only to No visible LED Changed from double sided PCB to single sided PCB and added comment on Gold Flash required for Varapoint Revised Key chart to match actual key labels. Revised Stuck Key Time-out and added diagram for STUCK KEY data packet to be sent out to HOST and added diagram for IDLE MODE (SLEEP) data packet to be sent out to HOST Revised ID Setup Revised RF SETUP procedure Added Factory Test mode for RF Channel Test Added comment on packet data to be sent two times for all key presses to end of this section. Revised Battery Life Section per Bill Brown Added Color and Printing specification Kicked-off Specification Revised IC from DIE package to QFP Changed Target Device from TV to Viewsonic Updated Key Table Updated Definitions in regards to LED blinking methodology Updated Stuck Key, sleep and Keep alive information and appendix Updated RF Channel Change section Updated Factory Test Updated Low Battery section for the 6volt design Changed data rate from max. 19.2 bps to fixed 9600 bps Updated Data Packet and Pointing device information Added statement on the each key press is calculates @ 1 second Changed Low non operating range from 20 C to -10C Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 3 of 63 3.1.1 3.3 3.1.3 3.1.4 3.1.5 3.4 1.1, 4, 6.1.1 4 4.1 5.1.1 5.1.2 5.1.3 2.1.1 3.1.5 3.1.6 10.2 3.4 &

3.4.7.1 3.4.6.1 5.1.2 5.1.2 7.6 11 3.2.4, 3.4.6.2 3.4 3.4.3 3.4.5 4.12 3.2.4, 3.4.6.2, 7.6 11 11 3.2.4, 3.4.6.2 3.4 1.1 4.9 Changed IC package to QFP (from DIE) Changed MUTE to RESYN in Conventions and Notations Changed PCB material from FR4 to Paper Phenolic Item 14- Added URC number Item 3- No FCC testing by UEI Revised Remote UEI Key and Pointing Device Data Packet Changed RF Operating Band range to 2446.7 2464.3MHz Table 2, Rqmt No. 4.10 Changed to Simplex Added Manchester Data Coding table Revised RF Channel and Operating Bands Revised RF Channels and Frequencies Added Pulse Width Timing section Added comment that NMB receiver Spec 0.9 takes precedence Modified item 3 to state FCC certification will be done by Optoma with UEI for support only. Item 1 (Batteries Included) has been changed from No to Yes-Bulk Item 2 (Batter Cover) Rating Label required has been changed from No to yes installed in specified area. Item 10 Device Label in addition to packaging changed from Yes to Installed on Unit Changed FCC requirement to read as follows Optoma will certify the complete unit with remote and keyboard. With documentation and possible engineering support to Optoma from UEI. Added provision to allow for using the varapoint mouse and the left and Right select keys simultaneously Add notes on power state for entering Factory Test modes and E2 Revised RF Channels and Frequencies Revised RF Channel Data to match the transmission table Updated Color Specification Chart Imported revised rendering dated 8/15/01 Style A rev 3.0 Updated Key charts for Smart and Enter Key Added Definition for Mouse Right and Left while used in conjunction with the mouse Updated Device Number Setup definition Updated E2 Initializtion Definition Changed power source from 2.2VDC to 2.2VDC Updated key-tables to reflect silk-screening changes Updated Rendering imported with silk-screening changes Updated Rendering with new Vara-touch pointer Added Break Data F6 for the Sync Key Added Break Data F6 for the Sync Key Revised Comment in Re-Sync Section in regards to no Break-Code being sent after the Re-Sync key was released. Corrected Frequency Output power is 18dbm Lee JE JE JE JE JE JE JE JE JE RM Rev 2.0 Rev 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.91 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 4 of 63 Approvals:

Jerry Bardin VP, Engineering (UEI) Steve Gates Sr.Director of Production Engineering Development (UEI) Ken Sweeney Director of OEM Sales-West (UEI) Huyen Phan Manager, SQA (UEI) Jay Conway Director, Library Technology (UEI) Anthony Phan, Manager, Software Jason Etter Sales Applications Engineering (UEI) Date:

Date:

Jakob Kishon Viewsonic Dave Schafer D2M Date:

Mike Zapka ViewSonic Date:

Rich Acosta NMB RF Receiver Group Date:

Date:

John Gou Manager/NMB RF Receiver Group Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 5 of 63 Table of Contents 3 2 3.3 3.4 Product Revision History ...........................................................................................................................................................................3 Purpose and Scope .....................................................................................................................................................................8 1 1.1 Description.................................................................................................................................. 8 1.2 Project Type ................................................................................................................................ 8 Applicable Documents ..............................................................................................................................................................8 2.1 Project Documentation ........................................................................................................... 8 2.1.1 Customer Specification ............................................................................................... 9 2.1.2 Other Product Documentation ................................................................................. 9 2.2 UEI Standard Documentation .............................................................................................. 9 2.2.1 UEI Standard Glossary.................................................................................................. 9 2.2.2 UEI Standard Hardware General Information .................................................... 9 2.2.3 UEI Standard Operational Features Descriptions ............................................ 9 2.2.4 UEI Standard Testing Procedures............................................................................ 9 Functional Requirements .......................................................................................................................................................9 3.1 Product Summary..................................................................................................................... 9 3.1.1 General Information...................................................................................................... 9 3.1.2 Software Information.................................................................................................... 9 3.1.3 Hardware Information .................................................................................................11 3.1.4 Mechanical Information .............................................................................................12 3.1.5 Quality/ Testing Information...................................................................................12 3.1.6 Miscellaneous Information........................................................................................13 3.2 Product Library.........................................................................................................................13 3.2.1 Target Device Mode Mapping ...................................................................................13 3.2.2 Defaults..............................................................................................................................13 3.2.3 Library Upgrade Support ............................................................................................13 Key Table .............................................................................................................................14 3.2.4 Operational Features......................................................................................................................15 Remote UEI Key and Pointing Device Data Packet......................................................................16 Definitions ............................................................................................................................20 3.4.1 3.4.2 Time Event / Data Packet Transmission Diagram............................................................23 Some notations used in the Time Event / Data Packet Diagram .....................................................27 Notation 27 Function Description ...........................................................................................................................27 Make ...........................................................................................................................................................................................................27 Device Number Setup..........................................................................................................28 3.4.3 RF Channel Change ............................................................................................................29 3.4.4 E2 Initialization....................................................................................................................31 3.4.5 Factory Test Mode(s)...........................................................................................................32 3.4.6 Key Test (Also used in Factory Test for Key): ..................................................................33 3.4.7 3.4.8 Low Battery Indicator.........................................................................................................38 RF Transmission General Specification .......................................................................................................................................39 Data Coding...................................................................................................................................40 Hardware Interface.........................................................................................................................................................................41 Transmitter Outline /Interface .......................................................................................................41 Product Performance Requirements ..............................................................................................43 RF CHANNEL and OPERATING BANDS......................................................................43 5.1.1 RF Channels and Frequencies............................................................................................43 5.1.2 RF Channel Operation Range ............................................................................................44 5.1.3 5.1.4 RF Modulation Scheme and Modulation Level ................................................................44 5.1.5 Maximum Bit Rate ..............................................................................................................44 5.1.6 RF Power Management.......................................................................................................44 T2 = Frequency Stable Time. Typically, it should be T2 > 20ms ............................................44 5.1.7 Transmitter Data Input Level ............................................................................................44 The transmitter data input level should be fixed as the supply voltage drops when using battery. It is required that the Input level will be Vp-p = 100mv (+/- 10%).................................................44 5.1 5.1 4.1 5 4 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 6 of 63 6 7.3 7.2 7.1.1 7.1.2 7.4 7.5 7.6 7.7 5.1.8 Communication Link...........................................................................................................44 Electrical Requirements .................................................................................................................................................................46 Power.............................................................................................................................................46 6.1 6.2 Visible LEDs .................................................................................................................................46 NA .............................................................................................................................................................46 Transmission IC.............................................................................................................................46 6.3 6.4 Battery Life....................................................................................................................................46 Range.............................................................................................................................................46 6.5 7 Mechanical Requirements..............................................................................................................................................................47 HRC Assembly.....................................................................................................................47 Assembly LEDs...................................................................................................................47 Enclosure .......................................................................................................................................47 7.2.1 Enclosure and Battery Cover Shape ..................................................................................47 7.2.2 Material ................................................................................................................................47 Texture..................................................................................................................................48 7.2.3 Color .....................................................................................................................................48 7.2.4 Keypad with Polydome .................................................................................................................48 7.3.1 Material ................................................................................................................................48 Tactile Feel ...........................................................................................................................48 7.3.2 Force Vs. Travel...................................................................................................................49 7.3.3 7.3.4 Life ........................................................................................................................................50 Keypad Pull-out Force ........................................................................................................50 7.3.5 Key stick and key stuck.......................................................................................................50 7.3.6 PCB Material.................................................................................................................................50 Battery Compartment ....................................................................................................................50 Printing ..........................................................................................................................................50 Labeling.........................................................................................................................................52 7.7.1 Date Code .............................................................................................................................52 7.7.2 Part Number Label..............................................................................................................52 7.7.3 Country of Origin ................................................................................................................52 QUALITY ........................................................................................................................................................................................53 Appearance....................................................................................................................................53 Cosmetic........................................................................................................................................53 Evaluation Criteria..............................................................................................................53 Definition of Flaw and Defect .............................................................................................54 Definition of Classes ............................................................................................................54 Cosmetic Evaluation............................................................................................................55 Durability Testing..........................................................................................................................56 8.3.1 Structure and Strength........................................................................................................56 8.3.2 Printing.................................................................................................................................56 8.3.3 Battery Contact....................................................................................................................57 8.3.4 Painting wear test (if necessary).........................................................................................57 8.3.5 Rubber coating wear test (if necessary).............................................................................57 8.3.6 Epoxy key test ......................................................................................................................57 ENVIRONMENTAL & SHOCK REQUIREMENTS................................................................................................................59 Temperature...................................................................................................................................59 Humidity Test................................................................................................................................59 Low Temperature Test...................................................................................................................59 High Temperature Test..................................................................................................................59 Thermal Shock...............................................................................................................................60 Drop Test.......................................................................................................................................60 Solvent Resistance.........................................................................................................................61 Liquid Spill....................................................................................................................................61 Standard Compliances...............................................................................................................................................................62 10.1 ESD Protection ..............................................................................................................................62 10.2 FCC ...............................................................................................................................................62 Rendering....................................................................................................................................................................................63 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 8.2.1 8.2.2 8.2.3 8.2.4 8.1 8.2 8.3 10 11 9 8 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 7 of 63 Purpose and Scope 1.1 Description The Viewsonic-Tweety remote will be a dedicated 2.4 gHz RF remote with 10 channel capability. This will be a 6V product and will use 4 AAA batteries. It will use a Samsung 16K

(S3P/C80F9XFE-QZR5) (QFP) Micro-controller. Network Description:

The RF modules support up to 10 channels in the ISM band of 2446.7MHz to 2464.3MHz, providing a form of frequency division multiple access (FDMA). This enables the simple implementation of systems requiring multiple devices to be operating continuously and concurrently. Note: This document contains all functional specifications and testing/quality requirements that UEI will perform. By signing off on this document, the customer agrees that these product/project parameters are final. Any further revisions will be accompanied by Engineering Change Request and appropriate authorizations. Features Samsung 16K(QFP) E2 (128 byte) To save RF Channel Data and Device ID 34 keys 6V product (4 AAA) Varapoint W-Link 2.4 gHz RF transmitter Slide Door Poly Dome Keys 1.2 Project Type 2 OEM-West Applicable Documents Appendix A: NMB/UEI Remote Devices and Receiver Module Rev. 0.1 Appendix B: NMB RF-Receiver (UART) and HOST (Image Processor) 2.1 Project Documentation The following documents of exact issue and date form part of this specification:

Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 8 of 63 2.1.1 Customer Specification NMB RF-Receiver and Host Image Processor rev 0.9

(This spec takes precedence a changes to the receiver software must also be made to the remote and keyboard) 2.1.2 Other Product Documentation N/A 2.2 UEI Standard Documentation UEI SPEC 0020, UEI SPEC HE003, UEI SPEC 0002 2.2.1 UEI Standard Glossary N/A 2.2.2 UEI Standard Hardware General Information Refer to Section 3.1.3 2.2.3 UEI Standard Operational Features Descriptions 2.2.4 UEI Standard Testing Procedures Refer to Section 6.0, Section 7.0 and Section 9.0. 3 Functional Requirements 3.1 Product Summary 3.1.1 General Information Functional Keychart Included IC Type and size and package type Keypad Parameters Specified Mode Indicator LEDs Multiple Devices (Jumpers) OTPs Used for initial Production Product Development Type:

OFA, OEM, Private Label, Cable, Chip Only Request Load Included Upgradeable Product (E2) 3.1.2 Software Information Channel Scan Channel +/- Simulation w/Lock Option Samsung (16K) Yes

(QFP) Yes No No Yes OEM-West NA NA No No Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 9 of 63 Channel Lock Device Mode Keys Dual Functional via Shift Key a) One Time Use b) Shift Lock w/Time-Out E2 Auto-Sizing E2 Device Mode Lock E2 Upgradeable via Modem (997) E2 Upgradeable via 6 pin interface Factory Test Mode Favorite Channel Scan (996) Functional Keys Additional a) brightness Control b) Color Control c) Menu d) Shifted Functions With/without time-outs e) Teletext Simple f) Teletext Fastext Functional Keys Standard Hidden Keys High Frequency Capable ID Code Verification ID Default Selection ID Lock/Unlock for Specific Mode ID Number of Digits ID Offset a) Constant number offset to all Ids b) Offset by Hardware setting (Jumper,....) c) Custom renumbering to some or all Ids Illuminated Key Pad Keymover (994) Full with Synthesizer Liquid Crystal Display (LCD) Low Voltage Detection Software Macros a) Hard Coded b) Premium Channel c) User Defined 1) Single 2) Multi-level Rotating Mode Reassignment (992) Modem Network Downloading Power On Mode Key Power Toggle Power Up w/Default Device Mode and Codes Power Up w/ No Defaults No DEDICATED No No No No No No Yes No No No No No No No Yes No No No No No NA None None None No No No Yes No No No No No No No No No No No Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 10 of 63 Punch Through to Last Device (by Key Group) Record Safety Remote Finder with Lock Option Reset to Defaults a) Operational Reset (980) b) Manufacturing Reset (981) Section 3.3.4 Set Up Section 3.3.2 Simultaneous Double Key Press - Standard Action Simultaneous Double Key Press - Alternative Action Sleep Feature via UEI w/Lock Option Step and Set (991) Stuck key Time-Out Synthesizer Visible LED - for user feedback Visible LED - for mode indication Volume Lock 3.1.3 Hardware Information 1. Crystal IR Carrier Operation 2. Keyboard Layout and # of keys 3. LCD (Segmented, Pixel), Backlight (LED, EL) 4. IR LEDs (1,2) (W,WW,WN) [Wide, Narrow]

5. Lighted Keypad (LED, EL), Color 6. Low Voltage Detection (Software Controlled) 7. Mode Indicator LEDs 8. Modem 9. PCB Material (Paper phenolic, FR4), Other 10. PCB Type (Single Sided, Double Sided, Silver thru holes, etc.) 11. Gold Flash 12. Plush Port 13. Plush Port Opening 14. RAM Retention 15. RF Operation 16. RF Finder 17. Visible LEDs for user feedback (2, 3, 5 mm) (Red, Green) 18. 3 or 6 Volt Operation (AAA,AA) 4AAA 19. 6 pin E2 Interface 20. Other (describe) Custom Custom No Custom Keypress = 60 sec. Pointer = 120 sec. No No No No No No No No No No No No No 34 None NA No Yes No No No No NA Yes No No No N/A Paper Phenolic Single Sided Yes-Varapoint 6V (4 AAA) Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 11 of 63 3.1.4 Mechanical Information 1. Battery Compartment 2. Colors & Labels 3. Force versus Travel (Keypad with Polydome) 4. IR Lens 5. Key Clearance 6. Keypad Definition 7. List of Consigned Parts 8. Material 9. Overlay 10. Packaging Requirements in BOM 11. Plastic Case design or rendering included 12. Prototype/Model 13. Sliding Door 14. Unique Parts 15. URC with B00#

16. Weight 17. Other (describe) 3.1.5 Quality/ Testing Information 1. Environmental Testing 2. ESD Protection 3. FCC or UL Certification Requirements 4. Production Line Testing Procedures 5. Quality Assurance Provisions 6. Reliability Testing 7. SIO Test Verification 8. Other (describe) Yes Section 8.2.4 Section 8.3.3 No Section Yes Microcontroller EEprom RF Transmitter Varapoint Section No Bulk Yes Yes Yes No 4012B00 TBD Viewsonic Jewel No- Optoma to apply for certification UEI will supply support. UEI Standard Yes Yes Yes Yes No N/A Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 12 of 63 Yes-Bulk Yes, label to be installed in specified area No Yes Yes 100 NA Yes-Bulk Customer Installed on unit On Rating Label 3.1.6 Miscellaneous Information 1. Batteries (Included) 2. Battery Cover a) Rating label silk screened on outside of battery door 3. Customer Service Support Required 4. Date Code Label 5. Labeling 6. Packaging 7. Units per Box shipping 8. Users Manual Development (Type: staples/folded map) 9. User Manual Type Responsibility 10. Device Label- inside addition to package 11. Country of Origin Location: Molded, Label, Silkscreened 3.2 Product Library This will be a dedicated remote. 3.2.1 Target Device Mode Mapping Mode Viewsonic Load/ Device Assignment Dedicated 3.2.2 Defaults Mode/Feature Viewsonic 3.2.3 Library Upgrade Support N/A Default State RF Channel 1 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 13 of 63 3.2.4 Key Table Key #

Key Label POWER PIP RECORD PLAY FFD STOP PAUSE PREVIOUS MENU/EXIT ENTER SMART REVERSE VL+

VL-

MUTE CH+

CH-

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

* SET and Reset in Pointing Device Data Packet INSTANT REPLAY JUMP PRESENT 1 2 3 4 5 6 7 8 9 0 JUMP COMM MULTIVIEW EPG

+100 RE-SYNC Make Code 75 74 73 6B 6F 70 6D 6E 6C

57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 13 14 15 16 17 18 19 1A 1B 1C 76 Break Code F5 F4 F3 EB EF F0 ED EE EC

D7 D8 D9 DA DB DC DD DE DF E0 E1 E2 93 94 95 96 97 98 99 9A 9B 9C F6 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 14 of 63 3.3 Operational Features Conventions and Notations The operation of the remote control and the programming sequence use the following shorthand notations. The relational operator <<>> around a key is an instruction to press and hold the key for 3 seconds. For example:

<<RESYNC + CH+ >>

Press RESYNC and hold for 3 seconds The relational operator <> around a key is an instruction to press the key and then release. For example:

<RESYNC>

Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 15 of 63 3.4 Remote UEI Key and Pointing Device Data Packet Data Packet Definition:

Byte10

(MSB) 0x0F Byte09 0x0F Byte08 0x0F Byte07 0x0F Byte06 0x55 Byte05 0x55 Byte04 0-0x63

(0-99 decimal) Device Number 8 bits Byte03 Byte02 Byte01 Byte0

(LSB) Dev Addr /

Status 8 bits X Coord 8 bits Y Coord /

ScanCode 8 bits CheckSum 8 bits Preamble 16 bits Sync Bytes 32 bits Sync Bytes:

signal input. Preamble:

Device Number:

Device Address / Status:

Four data bytes of 0x0F each are used to stabilize the demodulation of the Receiver side after a period of no Two data bytes of 0x55 each are used for decoder bit sync. Device number from 0 to 99 (decimal) Device Address / Status Batt b7 Pointing Device Status b6 b3 b4 b5 Device Address b2 b0 0 0 1 0 0 0 0 1 0 1 b1 0 0 1 1 0 Described Function RF Receiver NMB Keyboard Keypad UEI Remote Control Keypad NMB Keyboard Pointing Device UEI Remote Control Pointing Device Pointing Device Left Button Status (0=Up, 1=Down) Pointing Device Right Button Status (0=Up, 1=Down) X-Coordinate sign bit (0=Positive, 1=Negative) Y-Coordinate sign bit (0=Positive, 1=Negative) X-Coordinate:

Y-Coordinate / Scan Code:

Battery power level Status (0=Ok, 1=Low) Keyboard Data (0), X-Data for Pointing Device. Keyboard Data: Scan Code (Make/Break) [See Table 3: Scan Code Table], Y-Data for Pointing Device. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 16 of 63 CheckSum:

LEFT/RIGHT MOUSE key Operation The sum of Device Number + Device Address / Status + X-Coordinate + Y-Coordinate/Scan Code.

(Add all the indicated bytes without carrys). 1. When the <Left> key is pressed, its corresponding pointing device left key status (Bit 3) in the Device Address / Status Byte will be set. This bit will be set as long as the <Left> key is held down, and it will be reset (or cleared) when the <Left> key is released. 1.1. While the <Left> key is held down:

a) b) If the Pointing Device is not active, the transmitted data packet will have Left key status bit in the Device Address / Status Byte set and the X-Coordinate Byte and Y-Coordinate / Scan Code Byte contained all zeros. If the Pointing Device is active, the transmitted data packet will have Left key status bit in the Device Address / Status Byte set and the X-Coordinate Byte and Y-Coordinate / Scan Code Byte contained the X and Y positional values of the Pointer movement. 1.2. While the <Left> key is pressed and held down, if another key (other than <Right> key) is now pressed, the pointing device Left key status bit in the Device Address / Status Byte will be reset. a) b) If the Pointing Device is not active, no data packet will be transmitted. Both keys must be released for the remote to return to its normal operation If the Pointing Device is active prior to the key presses as described in 1.2 above, the transmitted data packet will have Left key status bit in the Device Address / Status Byte reset and the X-Coordinate Byte and Y-Coordinate / Scan Code Byte contained the X and Y positional values of the Pointer movement. 2. When the <Right> key is pressed, its corresponding pointing device right key status (Bit 4) in the Device Address / Status Byte will be set. This bit will be set as long as the <Right> key is held down, and it will be reset (or cleared) when the <Right> key is released. 2.1. While the <Right> key is held down:

a) b) If the Pointing Device is not active, the transmitted data packet will have Right key status bit in the Device Address / Status Byte set and the X-Coordinate Byte and Y-Coordinate / Scan Code Byte contained all zeros. If the Pointing Device is active, the transmitted data packet will have Right key status bit in the Device Address / Status Byte set and the X-Coordinate Byte and Y-Coordinate / Scan Code Byte contained the X and Y positional values of the Pointer movement. 2.2. While the <Right> key is pressed and held down, if another key (other than <Left> key) is now pressed, the pointing device Right key status bit in the Device Address / Status Byte will be reset. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 17 of 63 a) b) If the Pointing Device is not active, no data packet will be transmitted. Both keys must be released for the remote to return to its normal operation If the Pointing Device is active prior to the key presses as described in 2.2 above, the transmitted data packet will have Right key status bit in the Device Address / Status Byte reset and the X-Coordinate Byte and Y-Coordinate / Scan Code Byte contained the X and Y positional values of the Pointer movement. 3. When <Left> and <Right>) keys are both being held down (with one key is pressed before the other), the corresponding pointing device left key status (Bit 3) and right key status (Bit 4) in the Device Address / Status Byte will both be set. These bits will be set as long as the <Left> and <Right> keys are held down. If any one of these two keys is released first, its corresponding status bit will be reset while the corresponding status bit of remaining key remains set. Both bits will be reset (or cleared) when both keys are released. During this time, if the Pointing Device is not active, the X-Coordinate Byte and Y-Coordinate / Scan Code Byte will be all zeros in the transmitted data packet. Note: It is up to the Host application software to make use of the case where both left and right key status bits in the Device Address /

Status Byte are set. This condition would indicate that both <Left> and <Right> keys are currently being pressed and held down. 4. When the Pointing Device is active and one (or both) of <Left> (or <Right>) key is pressed, the X-Coordinate Byte and Y-Coordinate /

Scan Code Byte will be updated with the X and Y value of their corresponding positional movements. The transmitted data packet will have the corresponding Left (or Right) key status bit in the Device Address / Status Byte set or reset accordingly. Note:

If both keys <Left> and <Right> are pressed at the same time, this would be considered as invalid (simultaneously key press). There will be no data packet sent out in this case. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 18 of 63 Re-Sync Data Packet Byte10

(MSB) 0x0F Byte09 0x0F Byte08 0x0F Byte07 0x0F Byte06 0x55 Byte05 0x55 Sync Bytes Preamble 32 bits 16 bits Byte04 0-0x63

(0-99 decimal) Device Number 8 bits Byte03 Dev Addr /

Status 8 bits Byte02 0x00 X Coord 8 bits Byte01 0x76 Y Coord /

ScanCode 8 bits Byte0

(LSB) 0xYY CheckSum 8 bits How does the Re-Sync operates and When the Re-Sync code is sent:

Activating the <Re-Sync> key allows the user to send the signature data and to synchronize the RF Transmitter and Receiver RF-channel. To activate the Re-Sync function:

Press <Re-Sync> key first.

While <Re-Sync> key is held down, press a digit key <d> where d is any digit keys from 1, 2, 3, , 8, 9, 0 representing RF-channel 1, 2, 3, , 8, 9, 10 respectively. The process can pictorially be represented as below:

{{ <Re-Sync> + <d> }}

<d> is <Digit> Key for Digit 1, 2, 3, , 9, 0 Press/Release <d> key, while <Re-Sync> key is held down. The system first sets up d RF-channel for RF Transmitter (digit number corresponding to channel 1 through 10), it then sends out the Re-Sync Make code data packet, minimum of 10 or more, as long as key still held down.

If the <Re-Sync> and <d> keys are both released

If another <Digit> key is pressed/released while the <Re-Sync>

key is still held down The Sleep code data packet will be sent when no key activities are detected after 5 seconds (Refer to Sleep Code transmission section for details).

The system will setup another RF-channel, corresponding to that digit key, for the Transmitter, it then sends out another Re-Sync Make code data packet in that RF channel setting.

This process will be repeating as above in response to different <Digit> key is pressed/released while This Re-Sync signature data transmission process will be repeated as described above each time another <Digit> key is pressed/released until both Transmitter and Receiver units match its selected RF-channel. This channel frequency will then be used to transmit the data packet.

<Re-Sync> key is still held down. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 19 of 63 3.4.1 Definitions Stuck Key Time-out After any key is pressed continuously for 60 seconds, the remote will stop sending data packets and turn off RF transmission to conserve battery life. Transmission can begin again, after all keys are released and key is pressed. Stuck-Key Data Packet Byte10

(MSB) 0x0F Byte09 0x0F Byte08 0x0F Byte07 0x0F Byte06 0x55 Byte05 0x55 Byte03 Byte02 0x00 Byte01 0xFC Byte0

(LSB) 0xYY Byte04 0-0x63

(0-99 decimal) Device Number 8 bits Preamble 16 bits Dev Addr /

Status 8 bits X Coord 8 bits Y Coord /

ScanCode 8 bits CheckSum 8 bits Sync Bytes 32 bits How and When the Stuck-Key code is sent:

The Stuck-Key Code Data Packet will be sent:

After two data packets of the Make Code of the detected key press, <K1> say, have been sent out. If this (same) key, <K1>, is still being held down for more than 60 seconds, then two data packets of Stuck-Key code will be sent with 10 ms delay time interval between data packets. A Make Code data packet of the same key sent every 70 ms time interval during this 60 seconds stuck key condition.

For the pointing device, after sending out the X-Coord and Y-Coord continuously up to 2 minutes which is the time to be considered as stuck key timeout for

Two data packets of Sleep Code will be sent following the Stuck Code data packet. The RF Transmitter will then be turned OFF. pointing device. Two data packets of Stuck Code will be sent. Sleep Mode This is the idle state of the micro-controller when it draws the least amount of current. Upon entering the idle mode, the remote will transmit a unique byte

(FD) to notify the receiver that it is entering into the sleep mode. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 20 of 63 Sleep Data Packet Byte10

(MSB) 0x0F Byte09 0x0F Byte08 0x0F Byte07 0x0F Byte06 0x55 Byte05 0x55 Sync Bytes Preamble 32 bits 16 bits Byte04 0-0x63

(0-99 decimal) Device Number 8 bits Byte03 Dev Addr /

Status 8 bits Byte02 0x00 X Coord 8 bits Byte01 0xFD Y Coord /

ScanCode 8 bits Byte0

(LSB) 0xYY CheckSum 8 bits How and When the Sleep code is sent:

The Sleep Code Data Packet will be sent:

After depressed key, <K1> say, is released and two Data-Packets of K1 Break Code sent, the RF Transmitter will be turned OFF. If no other key press activities are detected after 5 seconds, the RF Transmitter will then be turned ON to send two data packets of Sleep code , the RF Transmitter will again be turned OFF and the remote software goes into its actual Sleep mode. 3.4.1.1 Repeated Make code Data Packet Byte10

(MSB) 0x0F Byte09 0x0F Byte08 0x0F Byte07 0x0F Sync Bytes 32 bits How and When the repeated Make Code is sent:

The repeated Make Code Data Packet will be sent:

Byte06 0x55 Byte05 0x55 Preamble 16 bits Byte04 0-0x63

(0-99 decimal) Device Number 8 bits Byte03 Byte02 0x00 Byte01 Byte0

(LSB) 0xYY Dev Addr /

Status 8 bits X Coord 8 bits Y Coord /

ScanCode 8 bits CheckSum 8 bits

After a depressed key, <K1> say, is detected, two data packets of its Make code will be sent with 10 ms delay between data packets. The Make code packet of the same key will be sent out for every 70 ms time interval as long as this <K1> is still being held down and the overall time since its first key press detection does not exceed 60 seconds. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 21 of 63

If another key, <K2> say, is pressed while <K1> is still held down, the Make code data packet of the same K1 key will be sent out as defined above. Until <K1> is released, two data packets of <K1> Break code will be sent with 10 ms delay between data packet. Since <K2> is now still held down, two data packets of <K2> Make code will be sent with 10 ms delay between data packets. Packet gap between the last Break Code of K1 sent and the first Make Code of K2 sent is 10 ms.. Note:

Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 22 of 63 Timing Events versus Data Packet transmission for various operational situations:

3.4.2 Time Event / Data Packet Transmission Diagram

--------------------------- // ------------------------ // ------------------ 60 seconds ---------------- // ------------------------ // -----------------

- ~ 70ms -- // Te_2a Te_3a, Te_1a Break Te_3b, Te_6a Te_3c, Te_6a Make Te_4a Make Te_2

~10ms~

Te_1 Te_3 Break Make Te_1a Make Te_4 Notes:

Time values are approximate and NOT to scale Refer to APPENDIX for notation descriptions used in this Diagram and Table below. Time Event / Data Packet Transmission Time Event Te_1

~10ms~

- // ---- 70ms --- // -----

- // ---- 70ms -- // ---- Make Te_4b Data Packet Transmission & Time Event First Make-Code-Data-Packet (<K1> Scan Code) will be sent. It follows by about 10 ms delay. Second Make-Code-Data-Packet (of same <K1> Scan Code as above) will be sent. Te_2 Key Press & Time Event

<K1> is pressed and detected

<K1> key is still being depressed 70 ms after Te_2, <K1> is still being held from the time event Te_1 when the <K1> depress is first detected.. Another 70 ms elapsed after Te_4 and <K1> is still being held down

<K1> is still being held down 70 ms after Te_4a. Te_4 Te_4a Te_4b Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Make code data packets of K1 are now transmitted. Another Make code Data Packets are sent Another Data Packet of Keep-Alive code is sent. See remark column. Rev 2.9A November 05, 2001 Page 23 of 63 StkKy Te_5 Te_5a Sleep Te_6 Te_6a Remark Case where a key press, <K1> say, is detected. Make-Code-Data-Packets are sent with 10 ms delay between the data packets. This is the case where:

From the time event Te_1 and for every 70 ms elapsed time interval, and 60 seconds stuck-key timeout has not been reached, Make code Data-Packet of the same key will be sent out as long as key <K!> is still being held down. Make Te_2

~10ms~

~10ms~

- // ---- 70ms --- // ----- Time Event / Data Packet Transmission Diagram (continued) Te_1 Te_3 Break Make Te_1a Make Te_4 Notes:

Time values are approximate and NOT to scale Refer to APPENDIX for notation descriptions used in this Diagram and Table below. Time Event / Data Packet Transmission (continued) Time Event Te_3 Te_3a, Te_1a Te_3b, Te_6a Te_3c, Te_5a Te_6a Key Press & Time Event 70 ms after Te_2a:

<K1> key is now released. 70 ms after Te_2a:

<K1> is released but another key is pressed, <K2> say within 5 seconds. 70 ms after Te_2a:

<K1> is released but NO other key press detected after 5 seconds elapsed. 70 ms after Te_2a:

While <K1> is still being held down, another key, <K2> say, is pressed

--------------------------- // ------------------------ // ------------------ 60 seconds ---------------- // ------------------------ // -----------------

- ~ 70ms -- // Te_2a Te_3a, Te_1a Break Te_3b, Te_6a Te_3c, Te_6a Make Te_4a

- // ---- 70ms -- // ---- Make Te_4b StkKy Te_5 Te_5a Sleep Te_6 Te_6a Data Packet Transmission & Time Event Two Break-Code-Data-Packets (of <K1> Scan Code) will be sent, separated by about 10 ms time interval between them. Two Break-Code-Data-Packets (of <K1> Scan Code) sent with 10 ms separation. The RF Transmitter will then be turned OFF. When another key,

<K2>, is pressed within 5 seconds, the RF Transmitter will be turned ON to send two Make-Code-Data-Packets of K2 (10 ms between packets) as shown at Te_1a Two Break-Code-Data-Packets (of <K1> Scan Code) will be sent with 10 ms time delay in between when <K1> is released. Since no other key press is detected beyond 5 seconds, a Sleep-Code-Data-Packet will be sent, the RF transmitter will then be turned OFF to conserve the power. Make code data packet of K1 sent as defined before. If <K1> released, Break code data packets of K1 sent, 10 ms later, Make code data packet of K2 sent. If

<K2> is still down, Make code data packet of K2 sent, etc.. , until <K2>

released, then Break code data packet of K2 sent. Remark 70 ms from the last Make-Code-Data-

Packet sent and <K1> released. Case where <K1> released, and <K2>

pressed within 5 seconds after <K1>

released. Case where <K1> released and no other key press is to be followed after more than 5 seconds. Case of Sequence Break-

Code/Stuck/Sleep to indicate the situation. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 24 of 63 Key Type Data Packet Transmission, a Summary:

All keys including the pointing device buttons are Make/Break type. When a key or button is pressed, the remote will transmit the data packet as shown in the protocol on previous pages. For reliable data transmission, keystroke and control push buttons data packets are transmitted twice wirelessly from the Remote Control RF Transmitter. The transmission is one time for Keep-Alive code and a minimum of 10 times for Re-Sync code. MAKE 10ms MAKE BREAK 10ms BREAK Followings are some scenarios of key press:

Case of a normal Key pressed/released:

Key Pressed Key Released Make Code sent. Break Code sent, RF Transmitter turned OFF. If no key press is detected after 5 seconds, RF Transmitter is turned ON and Sleep Code is sent. After that the RF Transmitter is again turned OFF and the unit goes to SLEEP mode. If a key press is detected within 5 seconds, that key data transmission will be serviced as described above. If a key pressed then stuck for a long time, then Make Code of the same depressed key will be sent for every 70 ms time interval within 1 minute from the time the original Make code sent. When 1 minute duration is expired, a Stuck code will be sent, followed by Sleep code and the RF Transmitter is then turned OFF. Note that the software would only be able to go to STOP (or SLEEP) mode when a stuck key is released. Case of Make code kept resend (use <K1> and <K2> as an example):

<K1> pressed Make Code of K1 sent.

<K2> is then pressed while <K1> is still down and both keys are now down within 1 minute. The Make code of K1 will be sent for every 70 ms time interval as described above, until one of the following conditions occurs:

<K1> is released first while <K2> is still held down. Break code of K1 will be sent and Make code of K2 will be sent after 70 ms.

<K2> is released first while <K1> is still held down. Nothing changes except the same Make code of K1 will be sent for every 70 ms time interval. Until <K1> is released and its Break code is sent. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 25 of 63 Case of Re-Sync data packet sent:

{{<Re-Sync>+<Digit>}} A <Digit> key is pressed while <Re-Sync> key is held down:

A minimum of 10 data packets of Re-Sync code (0x76) will be sent with 10 ms delay separated each data packet. Or the Re-Sync data packets will be kept sending out as long as the keys are held down. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 26 of 63 APPENDIX Some notations used in the Time Event / Data Packet Diagram Notation Make Break ReSyn StkKy Sleep Te_ij

<K1>

<K2>

Function Description Make Code for Scan Code of Keyboard Keypad or Remote Keypad, or X-

Coordinate, or Y-Coordinate of the Pointing Device Break Code for Scan Code of Keyboard Keypad or Remote Keypad, or X-

Coordinate, or Y-Coordinate of the Pointing Device Make Code for Re-Sync Make Code for Stuck-Key Make Code for Sleep Time Event _ij, where i = 1, 2, 3, etc and j = nothing (empty) or a, b, c, etc First Key press in the sequence of key press events Second Key press in the sequence of key press event after <K1>

Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 27 of 63 3.4.3 Device Number Setup Note: To prevent possible interference from multiple users environment, each remote will be set to a specific User Device Number (User DN#, between 00 to 99). If the User DN# has not been setup, the OSD will prompt the user to program a device number setup. To program, press <Re-Sync> key first then press <CH+> key, hold down both keys for about 3 seconds, then released:

<<Re-Sync> + <CH+>>

2. 1. The software is now expecting the user to enter two digit numbers representing the device number by press/release <Digit> <Digit> keys. (In the software test module, this process completes with 2 LED blinks indication). If <AnyKey> key, other than <Digit> keys, is pressed after the above sequence, the software will abort the Device Number Setup mode. (In the software test module, this error condition will be indicated by a long LED blink). 3. Within 10 seconds (timeout value) after the above sequence entry, if NO key is pressed (or the timeout expired between <Digit> key press), the software will exit the Device Number Setup mode and the remote will retain the current settings. The software will then return to its normal operation without having the device number updated. During this 10 seconds time, if the Pointer device is activated, the software will exit the Device Number Setup mode and will service the pointer movement of the remote. Each Remote has a Device ID and a Device Number (00-99). The Device ID shows the category of the Remote. The Host will validate the received data packet from the Remote, by checking the Device Number, to see if it has been registered for that Device ID or not. After the channel synchronization, the Device ID and Device Number of each Remote will be registered in the Host. Note: For both Keyboard and Remote Control, the Keypad and Pointing Device have the same Device Number. During synchronization, only Device ID of the Keypad and the Device Number of the Pointing Device will be sent. The Host should also register the Device Number for the Pointing Device of the corresponding device. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 28 of 63 3.4.4 RF Channel Change Re-Sync Data Packet Byte10

(MSB) 0x0F Byte09 0x0F Byte08 0x0F Byte07 0x0F Byte06 0x55 Byte05 0x55 Sync Bytes Preamble 32 bits 16 bits Byte04 0-0x63

(0-99 decimal) Device Number 8 bits Byte03 Dev Addr /

Status 8 bits Byte02 0x00 X Coord 8 bits Byte01 0x76 Y Coord /

ScanCode 8 bits Byte0

(LSB) 0xYY CheckSum 8 bits How does the Re-Sync operates and When the Re-Sync code is sent:

Activating the <Re-Sync> key allows the user to send the signature data and to synchronize the RF Transmitter and Receiver RF-channel. To activate the Re-Sync function:

Press <Re-Sync> key first.

While <Re-Sync> key is held down, press a digit key <d> where d is any digit keys from 1, 2, 3, , 8, 9, 0 representing RF-channel 1, 2, 3, , 8, 9, 10 respectively. The process can pictorially be represented as below:

{{ <Re-Sync> + <d> }}

<d> is <Digit> Key for Digit 1, 2, 3, , 9, 0 Press/Release <d> key, while <Re-Sync> key is held down. The system first sets up d RF-channel for RF Transmitter (digit number corresponding to channel 1 through 10), it then sends out the Re-Sync Make code data packet, minimum of 10 or more, as long as key still held down.

If the <Re-Sync> and <d> keys are both released

No Break Code data packet for Re-Sync will be sent. The Sleep code data packet will be sent when no key activities are detected after 5 seconds (Refer to Sleep Code transmission section for details). Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 29 of 63

If another <Digit> key is pressed/released while the <Re-Sync>

key is still held down

The system will setup another RF-channel, corresponding to that digit key, for the Transmitter, it then sends out another Re-Sync Make code data packet in that RF channel setting.

This process will be repeating as above in response to different <Digit> key is pressed/released while This Re-Sync signature data transmission process will be repeated as described above each time another <Digit> key is pressed/released until both Transmitter and Receiver units match its selected RF-channel. This channel frequency will then be used to transmit the data packet.

<Re-Sync> key is still held down. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 30 of 63 3.4.5 E2 Initialization EEPROM Initialization:

Note: The EEPROM device must have been previously initialized for the remote to be able to get into the Factory RF Channel Test Mode. Press <Re-Sync> key first then press <CH-> key, hold down both keys for about 3 seconds, then released. The software will enter the E2 Initialization mode WHEN the <Enter> key is pressed and released after the above described sequence.

<<Re-Sync> + <CH->>

1. 2. If <Enter> key is pressed/released after the above sequence, the software will initialize the EEPROM. (In the software test module, this process completes with 4 LED blinks indication) If <AnyKey> key, other than <Enter> key, is pressed after the above sequence, the software will abort the EEPROM Initialization mode. (In the software test module, this error condition will be indicated by a long LED blink). Within 10 seconds (timeout value) after the above sequence entry, if NO key is pressed, the software will exit the EEPROM Initialization mode and the EEPROM device will not be initialized. The software will then return to its normal operation. But during this 10 seconds time, if the Pointer device is activated, the software will exit the EEPROM Initialization mode and will service the pointer movement of the remote. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 31 of 63 3.4.6 Factory Test Mode(s)1 To enter this RF Channel test mode, press and hold a combination keys <<1>+<3>> for at least 3 seconds then released, within 6 seconds after the battery/power is applied to the unit:

<<1> + <3>>2 The software will start with setting up RF-channel 1 and send through the Transmitter the entire packet for the first channel continuously for the first 300 ms, with a 10-20ms gap between each channel. The process is automatically with the next RF-channel setup until all 10 RF-channels have been cycled through per Table1 below:

3.4.6.1 Table1: Factory Test Mode for RF Channel Test Test Channel Time (ms) 1 2 3 4 5 6 7 8 9 0 End test 0 - 300 300 - 400 400 - 700 700 - 800 800 - 1100 1100 - 1200 1200 - 1500 1500 - 1600 1600 -1900 1900 - 2000 2000 - 2300 2300 -2400 2400 - 2700 2700 - 2800 2800 - 3100 3100 - 3200 3200 - 3500 3500 - 3600 3600 - 3900 3900 Packet Sent 0F 0F 0F 0F 55 55 FF FF 01 01 00 Nothing sent while changing RF Ch. 1 0F 0F 0F 0F 55 55 FF FF 02 02 02 Nothing sent while changing RF Ch. 2 0F 0F 0F 0F 55 55 FF FF 03 03 04 Nothing sent while changing RF Ch. 3 0F 0F 0F 0F 55 55 FF FF 04 04 06 Nothing sent while changing RF Ch. 4 0F 0F 0F 0F 55 55 FF FF 05 05 08 Nothing sent while changing RF Ch. 5 0F 0F 0F 0F 55 55 FF FF 06 06 0A Nothing sent while changing RF Ch. 6 0F 0F 0F 0F 55 55 FF FF 07 07 0C Nothing sent while changing RF Ch. 7 0F 0F 0F 0F 55 55 FF FF 08 08 0E Nothing sent while changing RF Ch. 8 0F 0F 0F 0F 55 55 FF FF 09 09 10 Nothing sent while changing RF Ch. 9 0F 0F 0F 0F 55 55 FF FF 00 00 FE Nothing sent while changing RF Ch. 10 1FACTORY TEST MODE can be entered upon cold power up and/or warm power up 2 IF E2 is not initialized, the remote will not enter the FACTORY TEST MODE. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 32 of 63 Key Test (Also used in Factory Test for Key):

An integrated hardware/firmware/software test unit will be designed for the Key Test. This Key Test Unit can be used during this project software development as well as for factory test in an actual production manufacturing. No special combination key sequence is required to get into this Key Test mode. The integrated Key Test unit is functionally represented as below:

RF Receiver Firmware Unit Input:

Manchester code from RF Receiver output Output:

RS-232 TxD RxD

+5V GND

RS-232 interface (9600 baud) Software Unit Input:

RS-232 Output:

Display on Computer Monitor Computer Screen Monitor Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 33 of 63 3.4.6.1 Firmware Unit:

This so-called unit is actually a firmware portion that processes to keep 5 bytes of the 11-byte data packet after striping off all the Sync bytes and Preamble bytes. It then output these 5 bytes through the RS-232 protocol format. Byte4 Byte3 Byte2 Device Number DevAddr/Status X-coordinate

(8 bits)

(8 bits)

(8 bits) Byte1 Y-coordinate /

Scan Code

(8 bits) Byte0 CheckSum

(8 bits) Byte0 Byte1 Byte2 Byte3 Byte4 CheckSum The result of the addition (without carry) of Byte1 through Byte4

(Device Number + Device Address / Status + X-coordinate + Y-coordinate /

Scan Code) Y-coordinate / Scan Code Y-data for Remote Control Pointing Device, or Make/Break Scan Code of the pressed/released key on the Remote Control Keypad. See Table2 for details. X-coordinate X-data for Remote Control Pointing Device. Always 0 for Remote Control Keypad Device Address / Status Please refer to details on next page Device Number Device Number is chosen from 0 to 99 by system Host interface. The Host will validate the received data packet by checking the Device Number if it is registered for that device. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 34 of 63 Byte3 details:

b7 0 1 Device Address / Status b1 b6 1 0 b5 b4 Details Byte3 Description b2 0 1 b0 b3 0 UEI Remote Control Keypad 0 UEI Remote Control Pointing Device Pointing Device Left Button Status (0=Up, 1=Down) 0 1 0 1 Pointing Device Right Button Status (0=Up, 1=Down) Sign Bit of Y-coordinate Battery power level status Positive Negative Positive Negative OK, good Low Sign Bit of X-coordinate Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 35 of 63 3.4.6.2 Software Unit:

This so-called unit is actually a software portion (in the integrated Key Test Unit). After it receives a data packet of 5 bytes, as described above, through the RS-232 communication protocol, it will display the output on the computer screen monitor. The display output information will depend on the data input information received from the RS-232 inputs. The display output will be designed as such:

All 34 keys (Table2, columns 1 & 2) are to be programmed to be graphically displayed as key buttons (with proper key label if possible). A color-coded scheme are to be designed to visually represent the key status condition depending on (b2b1b0=010 in the Device Address

/ Status byte). Color-coded Gray Red Green Key press status Indicates a key that had never been pressed and/or released, or the key is malfunctioned that the remote could not detect when pressed. Indicates when the key is pressed and the software receives its Make Code corresponding to that key. Indicates when the key is released and the software receives its Break Code corresponding to that key. Two allocated display locations on the screen monitor are to be programmed to show the value of X-coordinate and Y-coordinate of the Pointing Device. These values are data received in Byte2 and Byte1 when the pointing device on the remote control is activated

(b2b1b0=100 in the Device Address / Status byte). An allocated display location on the screen monitor is to be programmed to show the status of the battery level condition. This status is to be decoded from bit b7 of Byte 3 (Device Address / Status byte) in the received data packet. An allocated display location on the screen monitor is to be programmed to show the Device Number. This value is to be extracted from Byte4 in the received data packet. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 36 of 63 Table2: Key Test (Also used for Factory Key Test) Note: Make Code and Break Code are in Hexadecimal. Make Code Key #

Key Label POWER PIP RECORD PLAY FFD STOP PAUSE PREVIOUS MENU/EXIT ENTER SMART REVERSE VL+

VL-

MUTE CH+

CH-

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 75 74 73 6B 6F 70 6D 6E 6C

57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 13 14 15 16 17 18 19 1A 1B 1C 76

* Set and Reset in Pointing Device Data Packet INSTANT REPLAY JUMP PRESENT 1 2 3 4 5 6 7 8 9 0 JUMP COMM MULTIVIEW RE-SYNC EPG

+100 Break Code F5 F4 F3 EB EF F0 ED EE EC

D7 D8 D9 DA DB DC DD DE DF E0 E1 E2 93 94 95 96 97 98 99 9A 9B 9C F6 Other allocated display locations on the screen monitor:

ID Number : xx Battery Good / Battery Low X-data of Pointing Device Y-data of Pointing Device Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 37 of 63 3.4.7 Low Battery Indicator When the batteries in the unit reach approximately 3.4 Volts the remote will send a specific frame of data to indicate the remote batteries are low. The user will be prompted via an onscreen display to change the batteries. When the unit's batteries reaches 2.9 Volts +/- 200 mV the remote will not respond to key presses. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 38 of 63 4 RF Transmission General Specification The performance requirements are contained in the table below Table 2. General Specification Rqmt No. 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 Parameter Number of channels Channel spacing Receive frequency band Demodulation Receiver sensitivity Data rate Transmit frequency band Modulation Radiated power FCC Requirements Simplex type RF frequency tolerance Temperature range Power source Power consumption Dimensions Weight Other requirements Description Minimum Fixed Maximum Fundamental Spurious emissions Operating Storage Nominal Maximum operational supply current PLL lock on time Tx Module 10 channels 1,2,3 & 1.6 MHz N/A N/A N/A 9600 bps 2446.7 to 2464.3 MHz FSK

-18 dBm 50 millivolts/meter @ 3 meters 500 microvolts/meter

@ 3 meters Transmit only 10 ppm 0 to 50 C

-10 to 60 C 2.5 VDC 15 mA 28mm x 22mm x 8mm To be determined 50 ms

* : The output data of channel 1-5 and channel 6-10 are different. Channel 1~5 : Tx input data Rx output data Channel 6~10: Tx input data Rx output data Note Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 39 of 63 4.1 Data Coding Data coding is necessary for the wireless communication, which is to eliminate the DC offset of the demodulation caused by the series 1s or 0s. Following describes Manchester Coding implementation:

1 0 0 0 1 1 0 1 1 1 1 1 0 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 40 of 63 5 Hardware Interface The interface to the module shall be as described in the table below. Table 1. Hardware Interface Parameter Input voltage - Vcc Ground Data Synthesizer enable Synthesizer SDA Synthesizer SCK Pin Number 1 2 3 4 5 6 Tx Module 2.2 volts Ground Data input TTL input TTL input TTL input 1 5.1 Transmitter Outline /Interface Dimension 28* 22*8 mm or smaller if 04/02 components are used 1. Vcc (2.2 V) 2. GND 3. Data in (Vp-p = 0.1V) 4. LE (TTL) 5. SDA (TTL) 6. SCK (TTL)

( Top View ) Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 41 of 63 5.1 Product Performance Requirements 5.1.1 RF CHANNEL and OPERATING BANDS 2400 to 2483.5 MHz 5.1.2 RF Channels and Frequencies Channel Tx module transmit frequency 2446.7 MHz 2448.7 MHz 2449.7 MHz 2451.7 MHz 2454.7 MHz 2456.3 MHz 2457.3 MHz 2459.3 MHz 2462.3 MHz 2464.3 MHz 1 2 3 4 5 6 7 8 9 0 Frequency Control Serial data is processed using the SDA, SCK, LE pins. Serial data controls the RF module. Binary serial data is entered through the SDA pin. One bit of data is shifted into the shift register on the rising edge of the clock (SCK). When the load enable (LE) pin is high, stored data is latched. After the both 19-bit register being latched, the frequency will be locked. Freq. Transmitter 19-bit Register 19-bit Register 2446.7 MHz 0010000000001010001 0010111111000100110 2448.7 MHz 0010000000001010001 0010111111001001110 2449.7 MHz 0010000000001010001 0010111111001100010 2451.7 MHz 0010000000001010001 0010111111010001010 2454.7 MHz 0010000000001010001 0010111111011000110 2456.3 MHz 0010000000001010001 0010111111101100110 2457.3 MHz 0010000000001010001 0010111111101111010 2459.3 MHz 0010000000001010001 0010111111110100010 2462.3 MHz 0010000000001010001 0010111111111011110 2464.3 MHz 0010000000001010001 0011000000010000110 CH 1 2 3 4 5 6*

7*

8*

9*

0*

*Channels 6,7,8,9, and 0 will be inverted when transmitted. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 43 of 65 5.1.3 Pulse Width Timing for RF Transmitter Long Low:

Long High:

Short Low:

Short High:

108.0us (+/- 5%) 102.0us (+/- 5%) 53.0us (+/- 5%) 50.0us (+/- 5%) 5.1.4 RF Channel Operation Range The remote shall communicate at a minimum distance of 5m in a direct line of site 5.1.5 RF Modulation Scheme and Modulation Level Modulation Scheme Frequency Shift Keying (FSK Modulation Level 70 kHz (Nominal) 5.1.6 Maximum Bit Rate 9600 baud (bps) 5.1.7 RF Power Management RF Power On Allocate Frequency Tx Data Input T1 = Power On Stable Time. Typically, it should be T1 > 5ms T1 X T2 X X T2 = Frequency Stable Time. Typically, it should be T2 > 20ms 5.1.8 Transmitter Data Input Level The transmitter data input level should be fixed as the supply voltage drops when using battery. It is required that the Input level will be Vp-p = 100mv (+/- 10%). 5.1.9 Communication Link Simplex one way communication from remote control unit to base unit. SERIAL INPUT DATA TIMING Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 44 of 63 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 45 of 63 6 Electrical Requirements 6.1 Power The remote shall operate from (4 - AAA) alkaline batteries. Power requirements shall be a maximum operating voltage of 6.4 volts. 6.2 Visible LEDs NA Transmission IC 6.3 Samsung 16K (S3P/C80F9XFE-QZR5) (QFP) 6.4 Battery Life 4 new AAA cells will provide approximately 10 months of battery life. This is the time at which the remote will begin sending the specific frame of data to indicate the remote batteries are low. This assumes the following usage:

5 hours of operation per day Approximately:

14.4 key presses per hour (@ 1 second each) 120 Seconds of Pointer operation per hour 6.5 Range Minimum 5meters in direct line of site. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 46 of 63 7 Mechanical Requirements 7.1.1 HRC Assembly The HRC assembly must meet UEI mechanical drawing and industrial design requirements. 7.1.2 Assembly LEDs NA 7.2 Enclosure 7.2.1 Enclosure and Battery Cover Shape The shape of the enclosing plastic parts including the top case, bottom case and battery cover can be specified by a set of mechanical part drawings and CAD files in the form of DXF and/or IGES format or Pro-E, Ashlar Vellum or AutoCAD format. 7.2.1.1 Part Form All plastic parts must meet the shape and proportions embodied in their respective UEI mechanical drawings and industrial designs. 7.2.1.2 Part Alignment & Mismatch All plastic parts must align correctly as specified in the respective UEI mechanical drawings. 7.2.1.3 Battery Cover The battery cover shall be designed to have a minimal lateral movement in the battery compartment and to disengage the latch mechanism at 700300 grams. 7.2.2 Material Recommended material selection for standard use plastic parts is ABS GPM, ABS T- grade or other engineering approved resin. The properties are described as follow:

Physical:

Specific Gravity, solid Mechanical:

Tensile Strength Tensile Modulus Flexural Strength Flexural Modulus 1.02-1.05 5,000-6,900 psi (35-50 MPa) 260,000- 360,000 psi (1,800-2,500 MPa) 8,500-12,300 psi (60-85 MPa) 270,000-380,000 psi (1,900-2,600 MPa) Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 47 of 63 Impact:

Izod Impact @ 73F Izod Impact @ -40F Flame Class Rating:

UL94HB 3.1-7.5 ft-lb/in (170-400 J/m) 1.2-2.6 ft-lb/in (65-140 J/m) 0.0579-0.0630 in. (1.47-1.6mm) 7.2.3 Texture Texture shall be Mold-Tech MT-11010 or UEI engineering approved equivalent as follows:

UEI SPEC.

(MOLD-TECH) HONG KONG

(YICK SANG) MT-11010 D-428 CHINA SIN OR MEXICO

(HON NGAI)

(PHILIPS) MK-111 9-410-UN-D249 KOREA

(KYUNG SUNG) K-112G 7.2.4 Color The Pantone Matching System (PMS) will be used as the general UEI color standard. Refer to the Pantone Color Formula Guide 1000 for specific color selection and color coordination. 7.3 Keypad with Polydome For further detailed information, see the UEI Keypad Design Guideline Manual

(Spec. # 0004). 7.3.1 Material The keypad is usually molded from compression molded silicon rubber. The recommended material shall be 50 to 60 shore A hardness, which provides good tactile feel and long life. 1.1-1.4 55 5 55 - 75 kg/cm2 11 - 22 26 kV/mm Physical Specific Gravity @ 25C Durometer (Shore A) Tensile Strength Compression Set %

Insulation Breakdown Flame Class Rating UL94HB The Polydome assembly is a die cut Polyethylene terephthalate (PET) sheets. It contains 0.05mm main dome sheet, adhesive, and 0.1mm spacer. The travel and tactile feed back are provided by the main dome sheet. 7.3.2 Tactile Feel The switch should operate smoothly throughout its entire travel with good tactile feedback. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 48 of 63 The force values are represented by gram and the travel values are represented by millimeter.

General range: 20050 grams and it is dependent on specific product application; therefore, see the keypad part drawing for exact specification. General range: 50-90% of P1. 40 grams minimum. 0.4 0.1mm and it is dependent on specific product application; therefore, see the keypad part drawing for exact specification. 7.3.3 Force Vs. Travel P1 (Peak force) P2 (Contact force) PR (Return force) S (Travel) Force

(gram) P1 P2 PR S Travel (mm) Figure 1: Force vs. travel Peak force, P1 15030 grams Return force, PR Snap ratio, TR 40 grams minimum 40% to 60%

Stroke, S 1.00.2mm 20030 grams 40 grams minimum 40% to 70%

0.40.1mm Rubber keypad only Keypad with polydome Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 49 of 63 7.3.4 Life Key Pad with Polydome All keys must continue operation within specification, after being subjected to500,000 cycles of key activation at , 250 grams of force @ 120 cycles per minute under normal operating conditions. 7.3.5 Keypad Pull-out Force The key top must not be separated from its base after 1kg vertical pull up force is applied. 7.3.6 Key stick and key stuck All keys should rebound to their original height smoothly and instantaneously. All keys should not get stuck under the key openings whichever location of the key is pressed. 7.4 PCB Material Material specification needs to be provided to Engineering and approved by Engineering prior to usage. Layout shall be based on UEI Specification 0029. If carbon ink is used, UEI Specification 0007 should be followed. 7.5 Battery Compartment The battery compartment must be clearly marked for battery size and polarity. The battery compartment must be designed to accommodate all brands per American National Standard Dry Cell and Battery Specification (ANSI C18.1M-1992). The battery must be retained by coil or leaf springs, tight enough to avoid rocking and loose The battery compartment must be designed to prevent contact in case of reverse polarity The batteries must remove from the battery compartment when a force of 300 to 500 grams is enough for easy replacement. during installation. exerted outward. The battery springs must be properly positioned to make contact with the batteries. The battery springs must remain properly seated when a force of 500 grams is applied. The battery springs must be insulated from each other. 7.6 Printing A pad printing or silk-screening process shall be used for all legends that print on plastic surface. A silkscreen printing process shall be used on keypad. All printing shall be free of visible blurs, alignment, or any distortion defects. Ink thickness shall be sufficient to cover the underlying materials color. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 50 of 63 Key name Rubber Pantone color Case label text European Power Symbol GS 056 Power MENU/EXIT NMB Midnight Gray ABT 10936A VOL UP VOL DN CH UP CH DN ENTER SMART MUTE PIP NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A ENTER NMB Midnight Gray ABT 10936A DS 161 SMART NMB Midnight Gray ABT 10936A MUTE NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A 4 NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A n NMB Midnight Gray ABT 10936A g II NMB Midnight Gray ABT 10936A DS 161 PIP PRE CH DS 161 DS 161 PREV CH REWIND PLAY FAST FORWARD RECORD STOP PAUSE INST REPLAY JUMP COMM JUMP PRESENT DS 161 EPG DS 161

+100 MULTIVIEW DS 161 1 2 3 4 5 6 7 8 9 0 RESYNC 1 2 3 4 5 6 7 8 9 0 NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A NMB Midnight Gray ABT 10936A Key label text MENU/EXIT VOL CH Case / Key label Pantone Color NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U INST REPLAY Pantone 1788 NMB White U NMB White U NMB White U JUMP COMM NMB White U JUMP PRESENT EPG

+100 MULTIVIEW RESYNC NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U NMB White U Housing will be NMB Midnight Gray ABT 10936A for top and back case. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 51 of 63 7.7 Labeling 7.7.1 Date Code Factory code Last two digits of year produced Week # of year produced Revision level of the latest Engineering BOM All assembly units require date code information. This information shall be marked inside the battery compartment in a form hot stamp/cold stamp or label. The date code information contains seven alphanumeric digits as describe below:

XXXXXXX First Digit Second and Third Digit Fourth and Fifth Digit Sixth and Seventh Digit Factory Code A - Samjin D - Kimex E - WKK G - Computime J - Jetta K - Jeckson M - Philips Mexico N - Sejin P - Philips Singapore S - SMK Mexico U - Universal Electronics Example:

Factory:

Year:

Week:

BOM Rev.:

Universal Electronics 10 02 U001002 2000 7.7.2 Part Number Label All assembly units require a label with the appropriate URC number applied inside the battery compartment, unless this URC number has been printed on the battery cover door per submitted artwork. 7.7.3 Country of Origin All assembly units require country of origin either embossed or printed on bottom case or battery door (except units shipped to Europe). Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 52 of 63 8 QUALITY This section defines the appearance, cosmetic, and durability testing requirements for plastic parts and assemblies, on all universal remote controls. However, when UEI customer requirements mandate, stricter (tighter) evaluation and testing methods must be used by the factory. 8.1 Appearance The unit shall be constructed in accordance with the mechanical requirements set forth in this section. These requirements must not be changed without written approval of Universal Electronics Inc. Key height shall be from 1.80.2 mm above the surface of the plastic case when in a static condition. The gap between key and plastic opening shall be 0.1mm minimum and 0.5mm maximum. (Suggested nominal gap 0.3 mm). The plastic cases shall mate accurately with minimal overhang. The maximum allowable overhang from the top case to the bottom case is 0.2mm. The maximum allowable overhang from the bottom case to the top case is 0.1mm. The plastic cases shall mate with a consistence gap around the peripheral. The gap shall be within 0.2mm from its designed dimension. 8.2 Cosmetic 8.2.1 Evaluation Criteria 8.2.1.1 Evaluation Criteria Lighting to be directly overhead. Surface to be evaluated held at a 45 angle to the line of sight, at a distance of 51cm (20) maximum to the center of surface. Unit under evaluation to be rotated 30 in both directions about the 45 inclined axis. 8.2.1.2 Lighting The light source shall be Cool White Fluorescent, non-directional at an intensity of 1000215 Lux (10020 footcandles). Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 53 of 63 8.2.2 Definition of Flaw and Defect The cosmetic features are divided into two categories: Flaws and Defects 1) Flaw is an acceptable imperfection or blemish. 2) Defect is a flaw that exceeds the cosmetic limit. 8.2.3 Definition of Classes The area usually viewed by user. The area occasionally viewed by user. The area seldom viewed by user. Class I :

Class II:

Class III:

Class II Class II Class I Class II Class III Class II Figure 2: D efinition of Classes Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 54 of 63 8.2.4 Cosmetic Evaluation Part must not be "pre-inspected" at a distance closer than that allowed in the Viewing Angle and Distance criteria. 8.2.4.1 All Classes General:

Cleanliness:

Blush marks, burns, pits, pulling, short shot, silver-streaks, slay, and weldlines are not acceptable. Part must be free of dust, oil, grime, grease, and other contaminants. Dust caused by shipping material is acceptable if it can be blown off by air or wiped off. 8.2.4.2 Class I- Acceptable Flaws table Maximum Inspection Time: 10 seconds Type Parting Line Flash Key Opening Flash Mismatch Scratches (within texture depth) Contamination Sink Size 0.15mm 0.05mm 0.15mm 1.5x0.2mm 0.5mm not allowed Qty 1 per opening 1 3 4 8.2.4.3 Class II- Acceptable Flaws table Maximum Inspection Time: 5 seconds Type Parting Line Flash Mismatch Scratches Contamination Sink Size 0.15mm 0.15mm 2.0x0.2x0.3mm 0.8mm 0.2mm Qty 1 1 4 4 2 Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 55 of 63 8.2.4.4 Class III- Acceptable Flaws table Maximum Inspection Time: 5 seconds Type Parting Line Flash Mismatch Scratches Contamination Sink Size 0.15mm 0.15mm 3.0x0.2x0.4mm 1.0mm 0.5mm Qty 1 1 3 4 3 8.2.4.5 Defects Any flaw that exceeds the limit of the above flaw table is a defect. Any two flaws on a given surface closer than 25mm is a defect. No more than three types of flaws are allowed on any one surface. 8.3 Durability Testing 8.3.1 Structure and Strength The plastic parts shall withstand a 5 kg compressive force for 3 seconds at several points without any physical damage by using a Slimline force gauge McMaster P/N 1365T24 (See Appendix, Figure C). The plastic parts shall withstand a bending force of 3 kg for 3 seconds applied at the ends of the plastic assembly by using a Slimline force gauge McMaster P/N 1365T24 (See Appendix, Figure D). The keypad buttons shall withstand a 3kg over activation load vertically for 3 seconds by using a Slimline force gauge McMaster P/N 1365T24 (See Appendix, Figure E). The base of the keypad must not be exposed from the key opening after the 1.5kg lateral force is applied by using a Slimline force gauge McMaster P/N 1365T24 (See Appendix, Figure F). The keypad shall not be damaged in normal operation using pen, pencil, or fingernail. 8.3.2 Printing handling. All text printed on plastic surfaces or switch buttons must withstand normal shipping and All printed legends must pass the Scotch Super strength packaging tape (3M cat no. 3506) test. Scotch tape is applied on the test surface and then removed three times at a 45 angle (each time a new tape). The printing shall not exhibit evident defects such as flaking, chipping, blistering, or de-lamination. All printed legends on plastic surfaces and keypad must be readable after being subjected to 500 cycles of abrasion @ 500 gram load with standard 100% cotton cloth as test piece. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 56 of 63 8.3.3 Battery Contact All forms of battery contacts, such as coiled spring and stamped spring, must not be permanently deformed after the drop test. The batteries must remain in contact after being inserted/removed 20 times. The battery door must maintain its closing/latch integrity after being inserted/removed 20 times. 8.3.4 Painting wear test (if necessary) The base plastic material cannot be shown after being subjected to 2000 cycles of abrasion @ 500 gram load with standard STAEDTLER eraser as test piece. 8.3.5 Rubber coating wear test (if necessary) The base plastic material cannot be shown after being subjected to 2000 cycles of abrasion @ 500 gram load with standard STAEDTLER eraser as test piece. 8.3.6 Epoxy key test 8.3.6.1 Reliability tests Adhesion test (see Figure G):

Impact resistance test (see Figure H):

Ultra-violet resistance test:

The key with epoxy top will be cut 1mm between the epoxy top and silicon rubber, then peeled off by finger. More than 50% of silicon must be attached to the epoxy top. At room temperature, a 1.5-kg load will be dropped vertically onto the epoxy surface from 50cm high. There should be no visible crack or delamination. The key with epoxy top will be tested per ASTMD1148 method B for 2 hours. There should be no sign of de-laminating, cracking or discoloration. After the test-piece is exposed to 100C for 12 hours, there should be no change of transparency and color. Heat resistance test:

Lateral load test (see Figure J):

There should be no delamination between the epoxy and the rubber key when 2-kg lateral load at any point on the epoxy and rubber key common edge. Life test:

The key with epoxy encapsulated will be tested for 500,000 cycles with 250 grams force at 120 cycles per minute. There should be no visible delamination. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 57 of 63 8.3.6.2 Cosmetic tests See Section 6.2.1. 1. There should be no overflow larger than 0.15mm, and void (bubble) larger than 0.04mm. 2. There should be no visible scratch, crack, cloudy (milky) spot, foreign objects such as fiber, dust, etc. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 58 of 63 9 ENVIRONMENTAL & SHOCK REQUIREMENTS 9.1 Temperature Operating range:

0C to +50C Non-operating range:

-10C to +60C 9.2 Humidity Test The unit under evaluation will be exposed to 403C, 95% relative humidity, non-

condensing for 24 hours without batteries or power. Functional tests will be performed after the HRC has stabilized at normal room conditions for two hours. 9.3 Low Temperature Test The unit under evaluation will be exposed to -203C for 24 hours without batteries or power. Functional tests will be performed after the HRC has stabilized at normal room conditions for two hours. 9.4 High Temperature Test The unit under evaluation will be exposed to 603C for 24 hours without batteries or power. Functional tests will be performed after the HRC has stabilized at normal room conditions for two hours. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 59 of 63 9.5 Thermal Shock The unit under evaluation (no batteries or power) will be subjected from -20C to 60C for 5 cycles with a dwell time of 1 hour at high and low temperature (as shown below). Functional tests will be performed after the HRC has stabilized at normal room conditions for two hours. 9.6 Drop Test The unit under evaluation must withstand one drop from 36 inches on six surfaces and four corners onto hardwood flooring (suggested 0.75" thick oak). For further specification details, see UEI Spec. #0005-0005. For a product with three batteries or less, the battery door and batteries should not be dislodged during the test. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 60 of 63 9.7 Solvent Resistance The unit under evaluation shall not be deformed or disfigured in any way by the application of 409 All Purpose Cleaner with 0.3% Alkyl dimethyl benzyl ammonium chloride or Windex with Ammonia-D to any exposed surfaces. Caustic solvents and cleaners such as porcelain, stainless, toilet or oven cleaners shall not be used. Apply two

(2) sprays of the cleaner directly onto any surface. The unit is then cleaned by wet towel after five (5) minutes drying. 9.8 Liquid Spill Eight (8) ounces of black coffee (no sugar added) will be poured over the keypad area at an angle of 30 degrees inclined (normal remote holding position). The unit with batteries installed is then turned up side down for five (5) seconds to allow coffee to drip off. The test sample must function properly after 48 hours stabilization. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 61 of 63 10 Standard Compliances 10.1 ESD Protection The HRC shall meet the following ESD profile per UEI Specification 0020 based on IEC 801-2. 10.2 FCC Optoma will certify the complete unit with remote and keyboard. With documentation and possible engineering support to Optoma from UEI. Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 62 of 63 11 Rendering Viewsonic Tweety RF Remote Universal Electronics Inc. Confidential Rev 2.9A November 05, 2001 Page 63 of 63 I N S T R U C T I O N S M A N U A L FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE STATEMENT 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. 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 euipment into an outlet on a circuir different from that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help. CAUTION:

Any changes or modifications not expressly approved by the grantee of his device could void the user's authority to operate the equipment. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance