LMA Letter

FCC ID: LDKC11111696

Cover Letter(s)

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FCCID_3890960

Date: January 31st, 2018 Subject: Limited Modular Approval FCC ID: LDKC11111696 Product Description: 802.11 dual band radio module The above referenced FCC ID is requested to be certified as a Limited Modular Approval (LMA) as it is designed only for use with Cisco developed products. The module was developed as a daughter board for Cisco Access Points and IoT devices. It will not be offered for sale to the general public or marketed to 3rd party vendors. The radio module was tested inside the host device and will be tested for spurious emissions per Part 15.109 and Part 15.209 in all Cisco devices it is installed in. The device meets the basic radio module requirements as specified in 47 CFR Part 15.212 as follows: Modular Requirements DA 00-1407 Requirement Requirement Met? Explanation 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module does not have to rely upon the shielding provided by the device into which it is installed in order for all modular transmitter emissions to comply with Part 15 limits. It is Y also intended to prevent coupling between the RF circuitry of the module and any wires or circuits in the Yes. The modular device into which the module is installed. Such coupling transmitter has its own may result in non-compliant operation. RF shielding 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 Y The modular requirements under conditions of excessive data rates or transmitter must have over-modulation. buffered modulation The module uses 3. The modular transmitter must have its own power +12V supply from the supply regulation. This is intended to ensure that the host and regulates all module will comply with Part 15 requirements regardless Y of the Wifi related of the design of the power supplying circuitry in the voltages down from device into which the module is installed. that +12V. 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). The antenna must either be permanently attached or employ a Y "unique" antenna coupler (at all connections between the The antenna is internal module and the antenna, including the cable). Any and permanently antenna used with the module must be approved with the attached.

module, either at the time of initial authorization or through a Class II permissive change. The "professional installation" provision of Section 15.203 may not be applied to modules. 5. The modular transmitter must be tested in a stand- alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. 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 Radiated scans were N performed in a typical connected to the module must not contain ferrites, unless they will be marketed with the module (see Section host chassis. The 15.27(a)). The length of these lines shall be length module is a daughter typical of actual use or, if that length is unknown, at least card designed by 10 centimeters to insure that there is no coupling between Cisco and will only be the case of the module and supporting equipment. Any incorporated into accessories, peripherals, or support equipment connected Cisco platforms. The to the module during testing shall be unmodified or Wi-Fi Module will not commercially available (see Section 15.31(i)). be sold to third party vendors. 6. The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID 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." Y 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 The FCC ID label of explain this requirement. In the latter case, a copy of the Wi-Fi module will these instructions must be included in the application for be placed on the radio equipment authorization. module. 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the 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. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there No specific are separate field strength level and timing requirements. instructions are Compliance with these requirements must be assured. Y required.

8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Y Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). The modular Modular transmitters approved under other Sections of transmitter complies Part 15, when necessary, may also need to address certain with all applicable RF RF Exposure concerns, typically by providing specific Exposure installation and operating instructions for users, installers requirements. Please and other interested parties to ensure compliance. refer to MPE report. Best Regards, Marie Higa 125 West Tasman Drive San Jose, CA 95134 Email: mhiga@cisco.com Direct: (408)853-7200


Document Created: 2018-06-15 16:08:01
Document Modified: 2018-06-15 16:08:01
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