VVXLM78XBLUETOOTH MODULE

LM Technologies Ltd. AT Command Manual Applicable for Firmware version 4.5X, 4.6X, 6.5X, 6.1X RevisionDateNameDescription v1.021-07-2009KanwalInitial Draft version v1.124-09-2009KanwalNew AT command added v1.215-06-2010KanwalApplicable to firmware v4.53, v4.61 v1.322-03-2011SumeetUpdates for firmware v6.51 This device complies with the following radio frequency and safety standards. Important to OEM Manufacturer: This following FCC Warning must be included in the HOST User Manual. FCC Warning This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE 1: 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 equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. Note 1: This module certified that complies with RF exposure requirment under portable or mobile or fixed condition, this module is to be installed only in portable or mobile or fixed applications. A portable device is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user A mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter's radiating structure(s) and the body of the user or nearby persons. Transmitting devices designed to be used by consumers or workers that can be easily re-located, such as wireless devices associated with a personal computer, are considered to be mobile devices if they meet the 20 centimeter separation requirement. A fixed device is defined as a device is physically secured at one location and is not able to be easily moved to another location. Note 2: Any modifications made to the module will void the Grant of Certification, this module is limited to OEM installation only and must not be sold to end-users, end-user has no manual instructions to remove or install the device, only software or operating procedure shall be placed in the end-user operating manual of final products. Note 3: The device must not transmit simultaneously with any other antenna or transmitter. Note 4: To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring compliance with the module(s) installed and fully operational. For example, if a host was previously authorized as an unintentional radiator under the Declaration of Conformity procedure without a transmitter certified module and a module is added, the host manufacturer is responsible for ensuring that the after the module is installed and operational the host continues to be compliant with the Part 15B unintentional radiator requirements. Since this may depend on the details of how the module is integrated with the host, LM Technologies Ltd shall provide guidance to the host manufacturer for compliance with the Part 15B requirements. Note 5: FCC ID label on the final system must be labeled with “Contains FCC ID: VVXLM78X” or “Contains transmitter module FCC ID: VVXLM78X”. The transmitter module must be installed and used in strict accordance with the manufacturer's instructions as described in the user documentation that comes with the host product. LM Technologies Ltd is responsible for the compliance of the module in all final hosts. AT Command Manualv1.3 @2010 LM- Technologies Ltd www.lm-technologies.comPage 2 of 18 Contents 1Introduction..................................................................................................................................... 4 2AT command Set ............................................................................................................................. 4 2.1History ..................................................................................................................................... 4 2.2Terminology............................................................................................................................. 4 2.3Command format .................................................................................................................... 4 2.4Command Response................................................................................................................ 5 2.5Host Events.......................................................................................................................…

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Block Diagram Ant. 2402-2480MHz

LM Technologies Ltd Unit 10, Caroline Point, 62 Caroline Street, Birmingham, B3 1UF, United Kingdom (FCC ID:VVXLM78X ) Gentlemen: Regarding to the FCC 15.212, LM Technologies Ltd would like to request modular approval for the submission FCC ID: VVXLM78X. LM Technologies Ltd. confirms that the product complies with numbered requirements identified below: 1. “The modular transmitter must have its own RF Shielding” The radio portion of this module has been shielded, please see exhibition External Photo. 2. “The modular transmitter must have buffered modulation/data inputs” The EUT has buffered data inputs; it is integrated in chip M29WB00DB70ZE6E. 3. “The modular transmitter must have its own power supply regulation” The EUT interface provides 3.3 VDC, and have its own VCO inside. 4. “The modular transmitter must comply with the antenna and transmission system requirements of Sections 15.203, 15.204(b) and 15.204(c) ” The EUT meets the antenna requirements. It is integral antenna on board. Refer to the photo of antennas are shown in the test report. 5. “The modular transmitter must be tested in a stand-alone configuration.” The EUT is tested in a test fixture, and connect to PC. Please see the photo of test setup photo of the report. 6. “The modular transmitter must be labeled with it’s own FCC ID number.” The EUT has it’s own FCC ID and the label is visible. 7. “The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacture must provide adequate instructions along with module to explain any such requirement.” The EUT is comply with all applicable FCC Rules. Warning detail refer to the user manual. 8. “The modular transmitter must comply with any applicable RF exposure requirements.” The EUT is comply with all applicable RF exposure requirements. See this RF exposure report. Sincerely, LM Technologies Ltd C Parry Lee Director

LM Technologies Ltd. Unit 10, Caroline Point, 62 Caroline Street, Birmingham, B3 1UF, United Kingdom -------------------------------------------------------------------------------- FCCID: VVXLM78X Model: LM78x, LM780, LM781 POWER OF ATTORNEY 2012-01-13 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize SEM.Test Compliance Service Co., Ltd. Jandy So on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by SEM.Test Compliance Service Co., Ltd. Jandy So on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, LM Technologies Ltd., are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, LM Technologies Ltd. ------------------------- (Parry Lee) (Director)

LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I FCC PART 15.247 EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2

LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I FCC PART 15.247 EXHIBIT 1- PRODUCT LABELING Proposed FCC ID Label Format FCC ID: VVXLM78X Specifications : Text is Black in color and justified. Labels are printed in indelible ink on permanent adhesive silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Proposed Label Location on EUT FCC ID Label Location

LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I FCC PART 15.247 EXHIBIT 1- PRODUCT LABELING Proposed FCC ID Label Format FCC ID: VVXLM78X Specifications : Text is Black in color and justified. Labels are printed in indelible ink on permanent adhesive silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Proposed Label Location on EUT FCC ID Label Location

LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I FCC PART 15.247 EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS Solder Board-Component View 1 Solder Board-Component View 2

LM Technologies Ltd. LM780‐781 Hardware Description Revision Date Name Description V1.0 06‐09‐2011 Kanwal Initial Draft version V1.1 09‐01‐2012 Sumeet Added description about metal cap LM780‐781 Hardware Description v1.1 @2011 LM‐ Technologies Ltd www.lm‐technologies.com Page 2 of 4 Contents 1 Introduction.....................................................................................................................................3 2 Circuit Description...........................................................................................................................3 2.1 Block Diagram..........................................................................................................................3 2.1.1 Radio Circuit ....................................................................................................................3 2.1.2 26MHz Crystal .................................................................................................................3 2.1.3 Bluecore4 Ext Chipset......................................................................................................4 2.1.4 Flash Memory..................................................................................................................4 2.1.5 Serial Interface ................................................................................................................4 2.1.6 SPI Interface.....................................................................................................................4 2.1.7 Power Supply...................................................................................................................4 2.1.8 Reset Circuit.....................................................................................................................4 3 Metal Cap ........................................................................................................................................4 LM780‐781 Hardware Description v1.1 @2011 LM‐ Technologies Ltd www.lm‐technologies.com Page 3 of 4 1 Introduction LM78x (LM780‐781) module design is based on Bluecore4 External chipset from CSR and uses class 2 radio circuit to provide short range Bluetooth connectivity. The module is an essential component for wireless connectivity option required by developers/integrators in end user products. 2 Circuit Description 2.1 Block Diagram 2.1.1 Radio Circuit Both transmitter and receiver share common radio circuit which consists of Bluecore4 Ext chipset connected to chip antenna via Balun cum Band Pass filter. The RF output/input of Bluecore chipset are each matched to balanced port of the balun cum Band Pass Filter IC. 2.1.2 26MHz Crystal 26 MHz crystal with tight tolerance (less than 10ppm) feeds clock to crystal driver circuit located inside Bluecore4 Ext chipset. The Bluecore4 Ext chipset enables frequency trimming by adjusting the chipset internal variable capacitors or by adjusting load capacitance of crystal to match the resonant frequency (i.e. 26 MHz). LM780‐781 Hardware Description v1.1 @2011 LM‐ Technologies Ltd www.lm‐technologies.com Page 4 of 4 2.1.3 Bluecore4 Ext Chipset Bluecore4 Ext chipset is single chip radio and baseband IC for Bluetooth 2.4GHz systems including enhanced data rates (EDR) to 3Mbps. The chipset outputs radio signal which is fed to chip antenna via transmitter circuit. On reception of radio signal, the chipset process the incoming signal and interrupts the software stack running in the flash. 2.1.4 Flash Memory Flash Memory stores the CSR Bluetooth stack, settings required by Bluecore4 Ext to configure the radio Tx, radio Rx, serial interface and other relevant settings. On powering up, the Bluecore4 Ext chipset reads the firmware and settings from the Flash Memory. The settings in the Flash Memory can be modified by sending specific commands from computer application to Bluecore4 Ext chipset. CSR Bluetooth stack provides a fully compliant Bluetooth system to BT 2.1+EDR specifications. 2.1.5 Serial Interface The application(s) running on the computer or connected host interacts with the Bluecore4 Ext chipset using serial interface (UART 3.3V complaint interface). 2.1.6 SPI Interface This is synchronous serial port interface (SPI) used for programming the firmware and configuration settings in Flash Memory via Bluecore4 Ext chipset. It is also used to switch the device in radio test modes which are required during various radio certifications/testing. 2.1.7 Power Supply Input power supply is fed to specified pins of the module. The power input is routed to input of voltage regulator to get +3.3V stable output. All the hardware blocks are supplied with 3.3V regulated power supply. 2.1.8 Reset Circuit The reset circuit is connected to active low RESET input of Bluecore4 Ext chipset. The RESET input will trigger chipset reset operation if it is in active low state for time period more than 5 msec. 3 Metal Cap In the Block Diagram above, all the circuit except the antenna circuit and chip antenna is covered with a metal cap. The metal caps shields any radio signal leaking out from the circuit and improves radio performance. It also provides extra grounding to the circuit beneath it.

LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I PAGE 1 OF 39 FCC PART 15.247 FCC Part 15C Measurement and Test Report For LM Technologies Ltd Unit 10, Caroline Point, 62 Caroline Street, Birmingham, B3 1UF, United Kingdom FCC ID: VVXLM78X Report Concerns: Original Report Equipment Type: Bluetooth Module Model: LM78x Report No.: STR12018144I Test Date: 2012-01-16 to 2012-02-05 Issue Date: 2012-02-16 Tested By: Jason Chen / Engineer Reviewed By: Lahm Peng / EMC Manager Approved & Authorized By: Jandy so / PSQ Manager Prepared By: SEM.Test Compliance Service Co., Ltd. 3/F, Jinbao Commerce Building, Xin'an Fanshen Road, Bao'an District, Shenzhen, P.R.C.（518101） Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by SEM.Test Compliance Service Co., Ltd . LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I PAGE 2 OF 39 FCC PART 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT)...............................................................................4 1.2 TEST STANDARDS...................................................................................................................................................5 1.3 TEST METHODOLOGY.............................................................................................................................................5 1.4 TEST FACILITY.......................................................................................................................................................5 1.5 EUT EXERCISE.......................................................................................................................................................5 1.6 ACCESSORIES EQUIPMENT LIST AND DETAILS.......................................................................................................6 1.7 EUT CABLE LIST AND DETAILS.............................................................................................................................6 2. SUMMARY OF TEST RESULTS ...........................................................................................................................7 3. §15.203 - ANTENNA REQUIREMENT..................................................................................................................8 3.1 STANDARD APPLICABLE.........................................................................................................................................8 3.2 TEST RESULT..........................................................................................................................................................8 4. FREQUENCY HOPPING SYSTEM REQUIREMENTS .....................................................................................9 4.1 STANDARD APPLICABLE.........................................................................................................................................9 4.2 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE......................................................................................9 4.3 FREQUENCY HOPPING SYSTEM.............................................................................................................................10 5. NUMBER OF HOPPING CHANNELS AND CHANNEL SPACING ...............................................................11 5.1 STANDARD APPLICABLE.......................................................................................................................................11 5.2 TEST EQUIPMENT LIST AND DETAILS...................................................................................................................11 5.3 TEST PROCEDURE.................................................................................................................................................11 5.4 ENVIRONMENTAL CONDITIONS............................................................................................................................11 5.5 SUMMARY OF TEST RESULTS/PLOTS....................................................................................................................12 6. DWELL TIME OF A HOPPING CHANNEL ......................................................................................................14 6.1 STANDARD APPLICABLE.......................................................................................................................................14 6.2 TEST EQUIPMENT LIST AND DETAILS...................................................................................................................14 6.3 TEST PROCEDURE.................................................................................................................................................14 6.4 ENVIRONMENTAL CONDITIONS............................................................................................................................14 6.5 SUMMARY OF TEST RESULTS/PLOTS....................................................................................................................15 7. 20-DB BANDWIDTH ..............................................................................................................................................17 7.1 STANDARD APPLICABLE.......................................................................................................................................17 7.2 TEST EQUIPMENT LIST AND DETAILS...................................................................................................................17 7.3 TEST PROCEDURE.................................................................................................................................................17 7.4 ENVIRONM…

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LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I FCC PART 15.247 EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Conduction Emission Test Setup Radiation Emission Test Setup (Below 30MHz) LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I FCC PART 15.247 Radiation Emission Test Setup (30MHz to 1GHz) Radiation Emission Test Setup (Above 1GHz) LM Technologies Ltd Model: LM78x REPORT NO.: STR12018144I FCC PART 15.247 Test Fixture View