Product Engineering Specification K33441 ET-CLA Document Title Document Number Prepared By Reviewed By Last Modified Creation Date Revision Status Confidential Product Engineering Specification PES-K33441 Matthew Hoag Betsy Diaz March 3, 2008 November 22, 2007 0.3 Draft Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 Date January 11, 2008 January 22, 2008 March 3, 2008 Revision History Modified By Matt Hoag Gary Wong Matt Hoag Product Information Product Name Product Description CLA mounted BT Handsfree kit Product Number Product Manager Project Manager K33441 Kevin Ngo Matthew Hoag Codename: ET -CLA Revision 0.1 0.2 0.3 1.0 1.1 1.2 Reason for Change First Draft Detail BT behavior iPhone & TDMA scheme Released Modified Modified Confidential Page 2 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 Table of Contents 1.0 Introduction .............................................................................................................................. 4 1.1 Scope .................................................................................................................................... 4 1.2 Purpose ................................................................................................................................. 4 1.3 Reference .............................................................................................................................. 5 1.4 Acronyms .............................................................................................................................. 5 2.0 Functional Specifications ....................................................................................................... 6 2.1 General Description .............................................................................................................. 6 2.2 System Diagram .................................................................................................................... 6 2.3 Button Functions ................................................................................................................... 7 2.4 Display Functions .................................................................................................................. 7 3.0 Electrical Specifications ......................................................................................................... 8 3.1 General Description .............................................................................................................. 8 3.2 Interface Description ............................................................................................................. 8 3.3 Power Requirements ............................................................................................................. 8 3.4 BT Requirements ................................................................................................................ 10 3.5 Audio Requirements Echo & Noise Cancelling ................................................................... 10 3.6 Audio Requirements TDMA Noise ...................................................................................... 11 4.0 Mechanical Specifications .................................................................................................... 12 4.1 Industrial Design Considerations ........................................................................................ 12 4.1.1 Usability ....................................................................................................................... 12 4.1.2 Logos and Other Markings .......................................................................................... 12 4.2 Component and Assembly Specifications ........................................................................... 12 4.3 Bill of Materials .................................................................................................................... 12 4.4 Material Specifications ........................................................................................................ 12 4.5 Tooling Specifications ......................................................................................................... 13 4.6 Compliance and Recycling Requirements .......................................................................... 13 4.7 Product Labelling Requirements ......................................................................................... 13 5.0 Software Specifications ........................................................................................................ 14 5.1 General Specifications ........................................................................................................ 14 N/A............................................................................................................................................. 14 5.2 Compatibility Requirements ................................................................................................ 14 5.3 Installation Requirements .................................................................................................... 14 6.0 Product Packaging, Labelling and Documentation ........................................................... 15 6.1 Packaging Name ................................................................................................................. 15 6.2 Box Structure Materials Specifications................................................................................ 15 6.3 Bill of Materials of Packaging .............................................................................................. 15 6.4 Sample Photo of Prior Design ............................................................................................. 15 6.5 Sample Photo and/or Drawing of ALL die cut components ................................................ 15 6.6 Sample Photo and/or Drawing of Assembly of all Component parts .................................. 15 7.0 Environmental Specifications .............................................................................................. 16 8.0 Regulatory Requirements ..................................................................................................... 17 Region Regulatory Requirements ................................................................................. 17 8.1 8.2 Environmental & Energy Compliance Requirements .................................................... 17 8.3 OEM Specific Requirements ......................................................................................... 17 9.0 Quality Requirements ........................................................................................................... 18 9.1 Design Workload ................................................................................................................. 18 9.2 Reliability Requirements ..................................................................................................... 18 9.3 Acceptance Quality Level .................................................................................................... 18 10.0 Approval ............................................................................................................................... 19 Confidential Page 3 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 1.0 Introduction ET- Visor is a Bluetooth enabled automotive speaker phone which is mounted at the vehicles CLA power port. The controls on the product & the pairing process are Smart Made Simple
. Figure 1 Preliminary product images 1.1 Scope This document outlines the Electrical Specifications, ID Considerations, Mechanical Specifications and Tooling Requirements necessary to produce the product. 1.2 Purpose Confidential Page 4 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 1.3 Reference a) Product Requirement Document, V1 b) KTG-QA-G005-03 Kensington Environmental Test Specification, April 18, 2007, Revision 0.3 c) Other reference documents 1.4 Acronyms Table 1 - Acronyms Acronym ESD EMC FCC Description Electrostatic Discharge Electro Magnetic Compatibility Federal Communication Commission Confidential Page 5 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 2.0 Functional Specifications 2.1 General Description ET is a hands free speakerphone that allows a user to answer/make a phone call without needing to access the phone itself through Bluetooth. The unit is powered via the vehicles CLA 12V Power port. 2.2 System Diagram ET CLA BT Handsfree Major components;
-BC05 BT Module
-Li-Ion Charging Circuitry
-iPhone charging circuitry in USB Port
-Speaker
-Mic with Noise cancellation
-Volume slider USB Port for charging other devices. Mic with noise cancellation Confidential Page 6 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 2.3 Button Functions 1. 2. 3. 4. 5.
-Speed dial buttons: x 3 a. b. c.
-When on a call, if the user presses & holds a speed dial button, the number for that call is stored in memory.
-When not in a call, if the user briefly presses the speed dial button, that number will be dialled by the cell phone and the call will be connected to the BT handsfree kit. If an incoming call is from one of the Speed dial numbers, the LED behind the speed dial button will flash.
-Call/Answer & -Call End (One button)
-Volume slider (rheostat)
-Power
-Pair (recessed) / Driver Swap a. Press and hold to start pairing process with a new phone. b. Quick press to disconnect from currently paired phone & attempt to reconnect with the next phone in the buffer. See interface specification for more detailed description of button functions & actions. 2.4 Display Functions Indicators LEDs
-Power on / Low power
-Pairing Mode/ Paired
-Speed dial Presets (3x) See interface specification for more detailed description of button functions & actions. Confidential Page 7 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 3.0 Electrical Specifications This product is a basic BT-Handfree kit which is power directly from an automotive CLA power port. This product will be approved under Apples Works with iPhone Program. This program requires:
-Automotive chargers for iPhone must meet very specific specifications for the power supplied and must show a resilience to power surges.
-Products with speakers must show that they do not pick up the TDMA interference from an iPhone & amplify it within the speaker 3.1 General Description 3.2 Interface Description interaction_101207_ flowchart.pdf 3.3 Power Requirements Must be powered by 10-14V
-Plugs into 12V power socket of car
-Fused 2AMPS SMT Quick burn
-Includes USB Power circuit which meets the following iPhone 5V power requirements
(Kensington will provide proven reference design to meet these requirements:
In order to reduce PCB space an SMT type fuse it to be used, rated to 2 Amps. The CLA power is to drive the electronics on ET and also provide 500mA 5volt power to The CLA power supply for the USB shall meet the following technical requirements:
the USB port. a. Input Surge 1. While the circuit is operating at MAX load and Min load the line voltage is switched to the surge voltage a. 12Vdc to 40Vdc for 16msec, back to 12Vdc. Repeated 5 times at 50% duty cycle 2. There shall be no component damage, Voltage / logic signals shall remain within specified limits, No loss of performance and no permanent damage. 1. With no load on the circuit measure the voltages on D+ and D-
2. The voltage must fall within the below limits b. Identity line Signals (USB) c. Load / Line / Regulation a. D+ : 1.91V to 2.12V b. D-: 1.91V to 2.12V 1. While the load on one output is increased in steps to a predetermined table, the output voltage deviations are noted. Test is repeated for different input voltages 2. Output Voltage range a. Vmin=4.85v Confidential Page 8 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 b. Vnom=5.0v c. Vmax=5.25v Input Voltage
(Vdc) 10V 12V 14V 0.0A 0.25A Regulation (V) 0.50A 0.70A Na Na Na 1.0A Na Na Na d. Dynamic Line Response e. Turn off/on Characteristics 1. The PSU is subject to a +2Vdc line variation. The output loads are chosen to give the worst case condition. No load capacitors shall be used. 2. The PSU should not undershoot or overshoot beyond the regulation limits (4.85Vmin, 5.25 Vmax) 1. All timing are to measured with a 5uF capacitive loading and 12V DC input voltage. a. Turn-on delay after DC input applied: T1<4.0 sec at which point the output voltage must have stabilized between 4.85 and 5.25 V DC. b. Output rise time (10% to 90% regulation): T2 <20ms 2. All parameters must be within specification a. The output voltage overshoot upon the application or removal of the input voltage shall be less than 10%
above the nominal voltage. b. There must be a smooth and continuous ramp of the DC output voltage from 10% to 90% of its final set point within the regulation band, while loaded as specified in section 3.3.b. No voltage of opposite polarity shall be present on any output during turn-on or turn off. 1. A fuse must be present at the input of the circuit so as to protect the circuit under any fault condition. 1. A short circuit is defined as less than 0.01 Ohm resistance between the output terminals. The PSU is submitted to a short circuit at minimum load 2. The output shall Hiccup or Foldback if any of the outputs are shorted to the secondary common. No damage shall result. Output shall recover after the short is removed. 1. The load is increased on one output from its maximum value to an estimated over current value in several steps at a rate of 0.1 A/sec. The test is repeated at different input voltages. 2. Overload currents applied to each tested output rail will cause the output to trip before they reach any point of damage to the circuit. For testing purposes the overload currents should be ramped at a minimum rate of 0.1 A/sec starting at full load. 3. The limit during overload condition also applies to any single fault condition. f. Fuse Protection g. Short Circuit h. Overcurrent:
Confidential Page 9 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 3.4 BT Requirements Chipset: CSR BC05 BT 2.1 Up to 8 Paired devices. One at a time 3.5 Audio Requirements Echo & Noise Cancelling Audio Out: Speaker Impedance: 8 Ohm +/- 15%
o Power (minimum) : 1W continuous, 2W peak. o Sensitivity (SPL): min 82 +/- 3dB o o Lowest resonant frequency [Fo]: 280 480 Hz o Effective frequency Range (minimum): Fo 10kHz o THD < 3%
o Generally the intent is to filter out all external noise factors including but not Audio In: measurement method tbd limited to:
Road Noise Car Noise Wind Noise Tire Noise Echo Other ambient noises o The prime audio solution (firmware based) for ET will be provided by Primax o Echo rejection: >42 dB o Convergence in presence of back ground noise: < 1.0 sec o Noise Cancellation: 12 dB o No Distortion or speech clipping o Comfort noise injection for natural sounding conversations o Enhanced Non-linear processor for suppression of residual echo o Microphone:
Omni directional microphone to be used To be isolated via a rubber boot to prevent vibration transmission Not to be rigidly mounted to the PCB, should be mounted to the plastics and attached to the PCB via flying leads RF filtering a must to reduce TDMA noise issues 6mm diameter microphone to be used Microphone SNR to be min 55 dB The microphone is to be located on the front face plate for optimum user orientation. Sensitivity greater than -45 dBV at 1KHz Reference Microphone:
Kingstate Microphone with flying leads. KECC2244WBL-G9U Confidential Page 10 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 3.6 Audio Requirements TDMA Noise o ET-CLA must include significant defences against TDMA noise generated by the iPhone. TDMA noise from the iPhone must not be transmitted to the user via the speaker on the ET-CLA. The TDMA noise is tested by following the test procedure written in the iPhone accessory specification R4. o TDMA noise test is done by playing the Apple 1000Hz test tone from a BT enabled source through the speaker of ET-CLA so that a defined SPL is measured. The tone is then played at that volume setting while loading a web page (www.apple.com) on the iPhone using the EDGE network. The iPhone is connected to ET-CLA via USB charging cable. This test must be completed in an Audio lab with a noise floor of 30dB or less. A microphone is connected to a laptop via an external USB sound card & Spectraplus records the combined 1000Hz tone & any resulting TDMA noise. The resulting audio image from the speaker is analyzed and the signal to noise ratio between the 1000 Hz tone and the TDMA must be greater than -70 dB. o Kensington has designed audio circuits to be resilient to TDMA noise in the past. In general it is necessary to correctly shield the audio cables and properly isolate the audio ground plane from any traces which may act as antennae and any ground planes that are directly connected to the iPhone. Details of past successful design strategies and a reference design will be provided by Kensington. Confidential Page 11 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 4.0 Mechanical Specifications Describe product mechanical specifications in this section, such as product Industrial Design, dimension, mechanical construction design, mechanical components design and assemble, product housing, color and finish, and so on. 3D design images are preferred to show the details of the design. You may add sub-sections as needed. 4.1 Industrial Design Considerations 4.1.1 Usability 4.1.2 Logos and Other Markings 4.2 Component and Assembly Specifications Mechanism for allowing the user to orient the speaker towards them. Rotating swivels and pivoting hinges must include detents so that speaker will remain in position even when subjected to the vibrations that are commonly experienced in automobile when it hits a large bump on the road. 4.3 Bill of Materials For a detailed Bill of Materials refer to the document BOM-KXXXXX-RX 4.4 Material Specifications Confidential Page 12 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 4.5 Tooling Specifications 4.6 Compliance and Recycling Requirements 4.7 Product Labelling Requirements Confidential Page 13 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 5.0 Software Specifications 5.1 General Specifications N/A 5.2 Compatibility Requirements Mobile phones supporting Bluetooth 2.0 specification and Handsfree or Headset profiles. 5.3 Installation Requirements N/A Confidential Page 14 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 6.0 Product Packaging, Labelling and Documentation Describe product packaging, labelling and documentation requirement in this section. You may add sub-sections as needed. In this section, you may need to specify the specifications for packaging material, provide the BOM of the packaging and photos or drawing of the assembly components of the packaging. You may also need to specify the requirement of using Kensington Logo and product labels on packaging. 6.1 Packaging Name 6.2 Box Structure Materials Specifications 6.3 Bill of Materials of Packaging 6.4 Sample Photo of Prior Design K33408.ppt
. 6.5 Sample Photo and/or Drawing of ALL die cut components Insert photos and/or drawings here. 6.6 Sample Photo and/or Drawing of Assembly of all Component parts Insert photos and/or drawings here. Confidential Page 15 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 7.0 Environmental Specifications This product shall comply with, at least but not limited, the environmental specifications selected in this section. Please refer to the reference b) which is the KTG-QA-G005-xx Kensington Environmental Test Specification document for the details of each test case. The xx here means the latest revision of this document. Environmental test cases selection table Comments Test Case Name Drop test without package Drop test with package Vibration test without package Vibration test with package Shock without package High temperature (operating) test Low temperature (operating) test Thermal shock test High temperature (storage) test Low temperature (storage) test Humidity cycling (storage) test Switch life cycle test Key/Button life cycle test Scroll Wheel life cycle test Battery cover/door endurance test Insert parts endurance test Cable bending strength test Cable pull strength test Cable and part joint strength test Paint surface chemical resistance test Paint surface abrasion test Paint surface adhesive ability test Surge voltage test Supply voltage fluctuation test Reverse voltage test ESD test (Direct Discharge) ESD test (Indirect Discharge) ESD test (Actual Use) Mandatory Test Optional Test Test Case No. 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 Note:
- Mandatory Test: tests must be conducted on this product.
- Optional Test: tests are optional to this product. Confidential Page 16 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 8.0 Regulatory Requirements 8.1 Region Regulatory Requirements Product manager shall select the corresponding marketing area for this product to insure that region regulatory compliance requirements are met for the following target markets. Project managers shall request contract manufacturers to complete the Product Compliance Certification Summary KTG-QA-S001 by the end of the final design stage. Africa - List countries:_______ Asia - List countries:_Hong Kong, Japan, Malaysia, Singapore Australia Canada Europe - All European Union countries requiring CE mark Europe Other Non European Union countries - List countries:______ South America - List countries:______ USA Mexico Middle East - List countries:_______ Russia Other countries:________ 8.2 Environmental & Energy Compliance Requirements Please select from the following list for the Environmental & Energy Compliance required for this product. If there is other requirement, please add description below. RoHS Directive 2002/95/EC (Europe) WEEE Directive 2002/96/EC (Europe) Energy Star (USA) Lead-Free
(USA) Dell Specific Requirements HP Specific Requirements Apple Specific Requirements Other, please specify 8.3 OEM Specific Requirements Confidential Page 17 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 9.0 Quality Requirements Please describe the quality requirement for this product below. The example subsections are given as a reference. Author may change these subsections or add more requirements according to the corresponding product. 9.1 Design Workload This product is designed to be capable of operating 24 hours a day, 365 days a year under the specified environmental conditions defined in section 7.1 and 7.2. 9.2 Reliability Requirements The reliability of this product shall be measured by MTBF (mean time between failures). It is the average time that this product is being used under its specific operating conditions before a failure occurs since last failure happened. It is measured in hours. The MTBF of this product is > ?????? hours. Note: The MTBF value is related to product design and manufacturing. It can be estimated based on the life accelerated tests. So when the product is in pre-production phase, the product life accelerated tests must be applied to ensure the required MTBF value is achievable. 9.3 Acceptance Quality Level The MIL-STD-105E shall be used as the standard of making the random sampling inspections for product manufacturing. The minimum Acceptance Quality Level for this product is defined as following:
Critical defects: no critical defect is acceptable Major defects: AQL Minor defects: AQL The author should define the AQL value based on the product characteristics. Defects Classification:
Critical: likely to result in unsafe condition or contravene mandatory regulation (no critical defect is accepted). Major: reduces the usability of the product or is an obvious appearance defect. Minor: doesnt reduce the usability of the product, but is a defect beyond the defined quality standard. The author can define these three types of defects in more detailed if it is necessary. Confidential Page 18 of 19 Product Engineering Specification March 3, 2008 Document PES-K33441 Rev 0.3 10.0 Approval After this document has been reviewed by all related manager and engineers listed below, and the document has been refined based on review comments, this document should be signed and approved by all required approvers. Approvals Department Approval required if checked Project Manager Product Manager Operation Manager Product Development Senior Design Engineer Quality Assurance Name Signature Approved Rejected*
D ate
* If someone rejected the approval, please describe the reason here. Confidential Page 19 of 19