EW4DWMW078Wireless LAN module

User Manual MITSUMI WiFi Module MODEL DWM-W078 The purpose of this manual is to explain correct way how to integrate module DWM-W078 to the end product. It includes procedures that shall assist you to avoid unforeseen problems. This manual presents information that shows how module and OEM product, where module integrated, complies with regulations in certain regions. Any modifications, not expressly approved by the manufacturer could void the authority to operate in these regions. The MITSUMI WiFi Module, model DWM-W078 has to be installed and used in accordance with the technical description/installation instructions provided by the manufacturer. For detail information concerning type approval of this module(e.g. where this module is already pre-approved) please contact the authorized local distributor or the manufacturer. The system may only be implemented in the configuration that was authorized. Note that any changes or modifications to this equipment not expressly approved by the manufacturer could void the user’s authority to operate this equipment. Regulatory Information Operational information Wireless interoperability The end product integrating this module is designed to be interoperable with any wireless LAN product that is based on direct sequence spread spectrum(DSSS) and orthogonal frequency division multiplexing(OFDM) radio technology and to comply with the following standards. IEEE Std 802.11b Standard on 2.4GHz Wireless LAN IEEE Std 802.11g Standard on 2.4GHz Wireless LAN IEEE Std 802.11n Standard on 2.4GHz Wireless LAN Safety The end product integration this module, like other radio devices, emits radio frequency electromagnetic energy. The level of energy emitted by this device, however, is less than the electromagnetic energy emitted by other wireless devices such as mobile phones. The end product integration this module operates within the guidelines found in radio frequency safety standards and recommendations. These standards and recommendations reflect the consensus of the scientific community and result from deliberations of panels and committees of scientists who continually review and interpret the extensive research literature. In some situations or environments, the use of the end product integrating this module may be restricted by the proprietor of the building or responsible representatives of the applicable organization. Examples of such situations include the following: Using the end product integrating this module onboard airplanes, or Using the end product integrating this module in any other environment Where the risk of interference with other devices or services is perceived or Identified as being harmful. If uncertain of the policy that applies to the use of wireless devices in a specific Organization or environment (an airplane, for example), ask for authorization to use the end product integrated into this module before turning it on. USA-Federal Communications Commission (FCC) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15of 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. If not installed and used in accordance with the instructions, it 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 tuning the equipment off and on, the user is encouraged to try and correct the interference by one or more of following measures: -Reorient or relocate the receiving antenna. -Increase the distance between the equipment and the receiver. -Connect the equipment to outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. 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. CAUTION: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Labeling: MITSUMI WiFi module DWM-W078 labeled as below. FCC ID: EW4DWMW078 The proposed with FCC ID label format is to be placed on the module. If FCC ID is not visible when the module is installed into the system, “Contains FCC ID: EW4DWMW078” shall be placed on the outside of final host system. Caution: Exposure to Radio Frequency Radiation. To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm must be maintained between the antenna of this device and all persons. This device must not be co-located or operating in conjunction with any other antenna or transmitter. Instructions to OEM integrators A User manual provided to the end user must indicate the operating requirements and conditions that must be observed to ensure compliance with the above-mentioned FCC RF Exposure guidline. If this module is intended for use in a portable device, integrators are responsible for separate evaluation and/or approval to satisfy FCC RF Exposure requirements. The antenna used this module is as follows; Antenna type: Chip antenna Antenna gain: -9.2dBi If an antenna with higher gain or new antenna type is used with this module, Integrators must contact Mitsumi for additional testing and submission to the FCC. If other radio devices are to be integrated with this module, an additional evaluation and FCC submission may be required. Integrators are responsible for such additional evaluation and FCC submission.

1601, SAKAI, ATSUGI-SHI, KANAGAWA, 243-8533 JAPAN TEL: +81-46-230-3420 FAX: +81-46-230-3500 Date:January 28, 2013 UL LLC Certification Division 47173 Benicia Street Fremont, CA 94538, USA To whom it may concern: I, the undersigned, hereby authorize UL LLC to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by UL LLC on our behalf shall have the same effect as acts of our own. I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing UL LLC as our agent, we still recognize that we are responsible to: a) comply with the relevant provisions of the certification program; b) make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c) make claims regarding certification only in respect of the scope for which certification has been granted; d) do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; e) upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f) use certification only to indicate the products are certified as being in conformity with specified standards; 1601, SAKAI, ATSUGI-SHI, KANAGAWA, 243-8533 JAPAN TEL: +81-46-230-3420 FAX: +81-46-230-3500 g) endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner; h) ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division; i) keep a record of all complaints made known to the us relating to the product’s compliance with requirements of the relevant standard and to make these records available to the Certification Division when requested; j) take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification; k) document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Masashi Tsuchida Mitsumi Electric Co., Ltd REMARK: 1. This authorization letter will be sent along with your application when filing with the Certification Division. 2. Please follow the format and type it on company letterhead and send original to us. 3. Authorized signature must be in agreement with grantee code contact in FCC database.

1601, SAKAI, ATSUGI-SHI, KANAGAWA, 243-8533 JAPAN TEL: +81-46-230-3420 FAX: +81-46-230-3500 Date: January 28, 2013 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Request for Confidentiality FCC ID: EW4DWMW078 To Whom It May Concern: Pursuant to the provisions of Sections 0.457 and 0.459 of the Commission’s rules (47 CFR §§ 0.457, 0.459), we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. Schematic Diagram Block Diagram Theory of Operation Antenna Specification Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Best Regards, Masashi Tsuchida Mitsumi Electric Co., Ltd.

Applicant/Grantee Mitsumi Electric Co., Ltd. FCC ID: EW4DWMW078 Section 15.212 Modular Transmitters Request for Modular Approval Request for Limited Modular Approval Requirements EUT Conditions Comply (Y/N) Single Modular Approval Requirements 1 The radio elements of the modular transmitter must have their own shielding. The physical crystal and tuning capacitors may be located external to the shielded radio elements. The device is equipped with Metal shielding to cover RF section. Refer to external photos Y 2 The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. All inputs to the device are buffered through logic U2 inputs. Refer to Schematic Diagram. Y 3 The modular transmitter must have its own power supply regulation. The device is equipped with Internal 1.2 V regulator. Refer to Block Diagram. Y 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 antenna must either be permanently attached or employ a “unique” antenna coupler (at all connections between the module and the antenna, including the cable). The “professional installation” provision of Section 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. The device is equipped with an integral antenna. Any connector isn’t used. Refer to Antenna specification ・ Y 5 The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing for compliance with Part 15 requirements. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see Section 15.27(a)). The length of these lines shall be the length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available (see Section 15.31(i)). The device was tested outside of the Laptop PC for full modular approval. Refer to setup photos. Y 6 The modular transmitter must be equipped with The proposed FCC ID label Y either a permanently affixed label or must be capable of electronically displaying its FCC identification number. (A) If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: XYZMODEL1” or “Contains FCC ID: XYZMODEL1.” Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. (B) If the modular transmitter uses an electronic display of the FCC identification number, the information must be readily accessible and visible on the modular transmitter or on the device in which it is installed. If the module is installed inside another device, then the outside of the device into which the module is installed must display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains FCC certified transmitter module(s).” Any similar wording that expresses the same meaning may be used. The user manual must include instructions on how to access the electronic display. A copy of these instructions must be included in the application for equipment authorization. format is to be placed on the module. If FCC ID is not visible when the module is installed into the system, “Contains FCC ID: EW4DWMW078” shall be placed on the outside of final host system. 7 The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. Refer to “User’s Guide” Exhibit Y 8 The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. The device complies with RF exposure compliance requirement Y A limited modular approval may be granted for single or split modular transmitters that do not comply with all of the above requirements, e.g., shielding, minimum signaling amplitude, buffered modulation/data inputs, or power supply regulation, if the manufacturer can demonstrate by alternative means in the application for equipment authorization that the modular transmitter meets all the applicable Part 15 requirements under the operating conditions in which the transmitter will be used. Limited modular approval also may be granted in those instances where compliance with RF exposure rules is demonstrated only for particular product configurations. The applicant for certification must state how control of the end product into which the module will be installed will be maintained such that full compliance of the end product is always ensured.

Model: DWM-W078 External Photo (Top side) (Bottom side)

Applicant: Mitsumi Electric Co., Ltd. FCC ID: EW4DWMW078 ID Label and Label Location The ID will be printed by laser marking on top of the shield cover. EW4DWMW078 DWM‐W078

Model: DWM-W078 Internal Photo (Top side) (Bottom side)

REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 64 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan 10. MAXIMUM PERMISSIBLE EXPOSURE FCC RULES §1.1310 The criteria listed in Table 1 shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in §1.1307(b), except in the case of portable devices which shall be evaluated according to the provisions of §2.1093 of this chapter. REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 65 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan EQUATIONS Power density is given by: S = EIRP / (4 * Pi * D^2) where S = Power density in W/m^2 EIRP = Equivalent Isotropic Radiated Power in W D = Separation distance in m Power density in units of W/m^2 is converted to units of mWc/m^2 by dividing by 10. In the table(s) below, Power and Gain are entered in units of dBm and dBi respectively and conversions to linear forms are used for the calculations. LIMITS From FCC §1.1310 Table 1 (B), the maximum value of S = 1.0 mW/cm^2 RESULTS BandModeSeparationOutputAntennaFCC Power DistancePowerGainDensity (m)(dBm)(dBi)(mW/cm^2) 2.4 GHzWLAN0.2012.62-9.200.000437

NVLAP LAB CODE: 200572-0 This laboratory is accredited by the NVLAP LAB CODE 200572-0, U.S.A. The tests reported herein have been performed in accordance with its terms of accreditation. *As for the range of Accreditation in NVLAP, you may refer to the WEB address, http://www.ul.com/japan/jpn/pages/services/emc/about/m ark1/index.jsp#nvlap FCC CFR47 PART 15 SUBPART C CERTIFICATION TEST REPORT FOR Wireless LAN module MODEL NUMBER: DWM-W078 FCC ID: EW4DWMW078 REPORT NUMBER: 33EE0032-HO-A ISSUE DATE: February 4, 2013 Prepared for Mitsumi Electric Co., Ltd. 1601, Sakai, Atsugi-shi, Kanagawa, 243-8533 JAPAN Prepared by UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 13-EM-F0429 REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 2 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan Revision History Rev. Issue Date Revisions Revised By -- 02/04/13 Initial Issue T. Hatakeda REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 3 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY .......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY .................................................................................... 6 4.1. MEASURING INSTRUMENT CALIBRATION ................................................................. 6 4.2. SAMPLE CALCULATION ................................................................................................ 6 4.3. MEASUREMENT UNCERTAINTY .................................................................................. 7 5. EQUIPMENT UNDER TEST ................................................................................................... 8 5.1. DESCRIPTION OF EUT .................................................................................................. 8 5.2. MAXIMUM OUTPUT POWER ......................................................................................... 8 5.3. AVERAGE OUTPUT POWER ......................................................................................... 8 5.4. DESCRIPTION OF AVAILABLE ANTENNAS ................................................................. 8 5.5. SOFTWARE AND FIRMWARE ....................................................................................... 8 5.6. WORST-CASE CONFIGURATION AND MODE ............................................................ 9 5.7. DESCRIPTION OF TEST SETUP ................................................................................. 10 6. TEST AND MEASUREMENT EQUIPMENT ........................................................................ 13 7. ANTENNA PORT TEST RESULTS ...................................................................................... 15 7.1. 802.11b MODE IN THE 2.4 GHz BAND ........................................................................ 15 7.1.1. 6 dB BANDWIDTH .................................................................................................. 15 7.1.2. 99% BANDWIDTH .................................................................................................. 18 7.1.3. OUTPUT POWER ................................................................................................... 21 7.1.4. AVERAGE POWER ................................................................................................ 22 7.1.5. POWER SPECTRAL DENSITY ............................................................................. 23 7.1.6. CONDUCTED SPURIOUS EMISSIONS ................................................................ 26 7.2. 802.11g MODE IN THE 2.4 GHz BAND ........................................................................ 27 7.2.1. 6 dB BANDWIDTH .................................................................................................. 27 7.2.2. 99% BANDWIDTH .................................................................................................. 30 7.2.3. OUTPUT POWER ................................................................................................... 33 7.2.4. AVERAGE POWER ................................................................................................ 34 7.2.5. POWER SPECTRAL DENSITY ............................................................................. 35 7.2.6. CONDUCTED SPURIOUS EMISSIONS ................................................................ 38 7.3. 802.11n-20 MODE IN THE 2.4 GHz BAND ................................................................... 39 7.3.1. 6dB BANDWIDTH ................................................................................................... 39 7.3.2. 99% BANDWIDTH .................................................................................................. 42 7.3.3. OUTPUT POWER ................................................................................................... 45 7.3.4. AVERAGE POWER ................................................................................................ 46 7.3.5. POWER SPECTRAL DENSITY ............................................................................. 47 7.3.6. CONDUCTED SPURIOUS EMISSIONS ................................................................ 50 REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 4 o…

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REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 66 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan SETUP PHOTOS RADIATED RF MEASUREMENT SETUP FOR PORTABLE CONFIGURATION RADIATED FRONT PHOTO RADIATED BACK PHOTO REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 67 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan X-AXIS Y-AXIS REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 68 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan Z-AXIS REPORT NO: 33EE0032-HO-A DATE: February 4, 2013 FCC ID: EW4DWMW078 Page 69 of 69 UL Japan, Inc. Head Office EMC Lab. 4383-326 Asama-cho, Ise-shi, Mie-ken 516-0021 JAPAN TEL: +81 596 24 8116 FAX: +81 596 24 8124 This report shall not be reproduced except in full, without the written approval of UL Japan POWERLINE CONDUCTED EMISSIONS MEASUREMENT SETUP END OF REPORT FRONT PHOTO BACK PHOTO