Netgear orporated NM7371 CDMA/LTE Mini-Card Module User Manual NM7371 HWIG FCC

Netgear Incorporated CDMA/LTE Mini-Card Module NM7371 HWIG FCC

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NM7371 User Manual

Integration Guide

NM7371Hardware Integration Guide2400338 Rev 3

PrefaceRev 3 Sep.13 Proprietary and Confidential 3Important NoticeDue to the nature of wireless communications, transmission and reception of data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant delays or losses of data are rare when wireless devices such as the NETGEAR® modem are used in a normal manner with a well-constructed network, the NETGEAR modem should not be used in situations where failure to transmit or receive data could result in damage of any kind to the user or any other party, including but not limited to personal injury, death, or loss of property. NETGEAR accepts no responsibility for damages of any kind resulting from delays or errors in data transmitted or received using the NETGEAR modem, or for failure of the NETGEAR modem to transmit or receive such data.Safety and HazardsDo not operate the NETGEAR modem in areas where blasting is in progress, where explosive atmospheres may be present, near medical equipment, near life support equipment, or any equipment which may be susceptible to any form of radio interference. In such areas, the NETGEAR modem MUST BE POWERED OFF. The NETGEAR modem can transmit signals that could interfere with this equipment.Do not operate the NETGEAR modem in any aircraft, whether the aircraft is on the ground or in flight. In aircraft, the NETGEAR modem MUST BE POWERED OFF. When operating, the NETGEAR modem can transmit signals that could interfere with various onboard systems.The driver or operator of any vehicle should not operate the NETGEAR modem while in control of a vehicle. Doing so will detract from the driver or operator's control and operation of that vehicle. In some states and provinces, operating such communications devices while in control of a vehicle is an offence.Limitation of LiabilityThe information in this manual is subject to change without notice and does not represent a commitment on the part of NETGEAR. NETGEAR AND ITS AFFILIATES SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY NETGEAR PRODUCT, EVEN IF NETGEAR AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.Notwithstanding the foregoing, in no event shall NETGEAR and/or its affiliates aggregate liability arising under or in connection with the NETGEAR product, regardless of the number of events, occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser for the NETGEAR product.

Rev 3 Sep.13 Proprietary and Confidential 5ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Required connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Module power states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9RF Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11RF connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Choosing the correct antenna cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Determining the antenna’s location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Ground connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Interference and sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Interference from other wireless devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Host-generated RF interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Methods to mitigate decreased Rx performance . . . . . . . . . . . . . . . . . . . . . . . . . 13Radiated Spurious Emissions (RSE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Regulatory Compliance and Industry Certfications . . . . . . . . . . . . . . . . . . . . . . 15Important notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Safety and hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Important compliance information for North American users . . . . . . . . . . . . . . . . . . 16Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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Rev 3 Sep.13 Proprietary and Confidential 711: IntroductionThe NETGEAR NM7371 PCI Express Mini Card is a compact, lightweight, wireless LTE- and CDMA-based modem used to enable rapid development and deployment of NETGEAR WWAN-enabled devices.The NM7371 provides LTE, CDMA, and GNSS connectivity for NETGEAR Wireless WWAN-enabled Gateway & Router products.This module is intended for internal NETGEAR use only and will not be offered for sale through OEM channels or sold through direct retail (end-user install) channels.Required connectorsTable 1-1 describes the connectors used to integrate the NM7371 into your host device.Table 1-1: Required host-module connectorsaConnector type DescriptionRF cables •Mate with Hirose U.FL connectors (model U.FL #CL331-0471-0-10)•Two connector jacksEDGE (52-pin) •Industry-standard mating connector•Some manufacturers include Tyco, Foxconn, Molex•Example: UDK board uses Molex 67910-0001SIM •Industry-standard connector. Type depends on how host device exposes the SIM socket•Example: UDK board uses ITT CCM03-3518a. Manufacturers / part numbers are for reference only and are subject to change. Choose connec-tors that are appropriate for your own design.

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Rev 3 Sep.13 Proprietary and Confidential 922: PowerPower supplyThe host provides power to the NM7371 through multiple power and ground pins. The host must provide safe and continuous power at all times; the module does not have an independent power supply, or protection circuits to guard against electrical issues.For detailed pinout and voltage / current requirements of this module, see the NM7371 Product Technical Specification Document & Customer Design Guidelines.Module power statesThe module has four power states, as described in Table 2-1. Table 2-1: Module power states State DetailsHost is poweredModule is poweredUSB interface activeRF enabledNormal(Default state)•Module is active•Default state when VCC is first applied•Module is capable of placing / receiving calls, or establishing data connections on the wireless network•Current consumption is affected by several factors, including:•Radio band being used•Transmit power•Receive gain settings•Data rate•Number of active Tx time slots   Low power(‘Airplane mode’)•Module is active•Module enters this state:•Under host interface control•Automatically, when critical temperature or voltage trigger limits have been reached   

NM7371 Hardware Integration Guide10 Proprietary and Confidential 2400338Sleep •Normal state of module between calls or data connections•Module cycles between wake (polling the network) and sleep, at network provider-determined interval.   Disconnected •Host power source is disconnected from the module and all voltages associated with the module are at 0 V.   Table 2-1: Module power states (Continued)State DetailsHost is poweredModule is poweredUSB interface activeRF enabled

NM7371 Hardware Integration Guide12 Proprietary and Confidential 2400338of the antenna is still very important — if the host device is insufficiently shielded, high levels of broadband or spurious noise can degrade the module’s performance.•Connecting cables between the module and the antenna must have 50  impedance. If the impedance of the module is mismatched, RF performance is reduced significantly.•Antenna cables should be routed, if possible, away from noise sources (switching power supplies, LCD assemblies, etc.). If the cables are near the noise sources, the noise may be coupled into the RF cable and into the antenna.Ground connectionWhen connecting the module to system ground:•Prevent noise leakage by establishing a very good ground connection to the module through the host connector.•Connect to system ground using the two mounting holes at the top of the module.•Minimize ground noise leakage into the RF.Depending on the host board design, noise could potentially be coupled to the module from the host board. This is mainly an issue for host designs that have signals traveling along the length of the module, or circuitry operating at both ends of the module interconnects.Interference and sensitivitySeveral interference sources can affect the module’s RF performance (RF desense). Common sources include power supply noise and device-generated RF.RF desense can be addressed through a combination of mitigation techniques (Methods to mitigate decreased Rx performance on page 13) and radiated sensitivity measurement.Note: The NM7371 is based on ZIF (Zero Intermediate Frequency) technologies. When performing EMC (Electromagnetic Compatibility) tests, there are no IF (Intermediate Frequency) components from the module to consider.Interference from other wireless devicesWireless devices operating inside the host device can cause interference that affects the module.To determine the most suitable locations for antennas on your host device, evaluate each wireless device’s radio system, considering the following:•Any harmonics, sub-harmonics, or cross-products of signals generated by wireless devices that fall in the module’s Rx range may cause spurious response, resulting in decreased Rx performance.•The Tx power and corresponding broadband noise of other wireless devices may overload or increase the noise floor of the module’s receiver, resulting in Rx desense.

Rev 3 Sep.13 Proprietary and Confidential 13The severity of this interference depends on the closeness of the other antennas to the module’s antenna. To determine suitable locations for each wireless device’s antenna, thoroughly evaluate your host device’s design.Host-generated RF interferenceAll electronic computing devices generate RF interference that can negatively affect the receive sensitivity of the module.Proximity of host electronics to the antenna in wireless devices can contribute to decreased Rx performance. Components that are most likely to cause this include:•Microprocessor and memory•Display panel and display drivers•Switching-mode power suppliesMethods to mitigate decreased Rx performanceIt is important to investigate sources of localized interference early in the design cycle. To reduce the effect of device-generated RF on Rx performance:•Put the antenna as far as possible from sources of interference. The drawback is that the module may be less convenient to use.•Shield the host device. The module itself is well shielded to avoid external inter-ference. However, the antenna cannot be shielded for obvious reasons. In most instances, it is necessary to employ shielding on the components of the host device (such as the main processor and parallel bus) that have the highest RF emissions. •Filter out unwanted high-order harmonic energy by using discrete filtering on low frequency lines.•Form shielding layers around high-speed clock traces by using multi-layer PCBs.•Route antenna cables away from noise sources.Radiated Spurious Emissions (RSE)When designing an antenna for use with NETGEAR embedded modules, the host device with a NETGEAR embedded module must satisfy the radiated spurious emissions (RSE) test cases described in 3GPP2 (CDMA) and 3GPP (LTE).Note that antenna impedance affects radiated emissions, which must be compared against the conducted 50-ohm emissions baseline. (NETGEAR embedded modules meet the 50-ohm conducted emissions requirement.)

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Rev 3 Sep.13 Proprietary and Confidential 1544: Regulatory Compliance and Industry CertficationsThis module is designed to meet, and upon commercial release, will meet the requirements of the following regulatory bodies and regulations, where applicable:•Federal Communications Commission (FCC) of the United StatesImportant noticeBecause of the nature of wireless communications, transmission and reception of data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant delays or losses of data are rare when wireless devices such as the NETGEAR modem are used in a normal manner with a well-constructed network, the NETGEAR modem should not be used in situations where failure to transmit or receive data could result in damage of any kind to the user or any other party, including but not limited to personal injury, death, or loss of property. NETGEAR and its affiliates accept no responsibility for damages of any kind resulting from delays or errors in data transmitted or received using the NETGEAR modem, or for failure of the NETGEAR modem to transmit or receive such data.Safety and hazardsDo not operate your NM7371 modem:•In areas where blasting is in progress•Where explosive atmospheres may be present including refuelling points, fuel depots, and chemical plants•Near medical equipment, life support equipment, or any equipment which may be susceptible to any form of radio interference. In such areas, the NM7371 modem MUST BE POWERED OFF. Otherwise, the NM7371 modem can transmit signals that could interfere with this equipment.In an aircraft, the NM7371 modem MUST BE POWERED OFF. Otherwise, the NM7371 modem can transmit signals that could interfere with various onboard systems and may be dangerous to the operation of the aircraft or disrupt the cellular network.

NM7371 Hardware Integration Guide16 Proprietary and Confidential 2400338Important compliance information for North American usersNote: Details are preliminary and subject to change.The NM7371 modem has been granted modular approval for mobile applications. Integrators may use the NM7371 modem in their final products without additional FCC certification if they meet the following conditions. Otherwise, additional FCC approvals must be obtained.IMPORTANT: The integrator must include the antenna–body separation distance (point 1) and RF exposure (point 2) information detailed below within the user’s manual or operator instruction guide for the final product.1. At least 20 cm separation distance between the antenna and the user’s body must be maintained at all times.2. To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation, the maximum antenna gain including cable loss in a mobile-only exposure condition must not exceed:·7.9 dBi in Cellular (BC0 / BC10)·8.0 dBi in PCS band (BC1)·8.0 dBi in LTE Band 25·7.9 dBi in LTE Band 26·9.5 dBi in LTE Band 413. The NM7371 modem may transmit simultaneously with other collocated radio transmitters within a host device, provided the following conditions are met:·Each collocated radio transmitter has been certified by FCC for mobile appli-cation.·At least 20 cm separation distance between the antennas of the collocated transmitters and the user’s body must be maintained at all times.·The output power and antenna gain must not exceed the limits and configura-tions stipulated in the following table.Device Technology Band Frequency(MHz)Maximum conducted power(dBm)Maximum antenna gain(dBi)NM7371 LTE 25 1850–1915 24 8.026 817–849 24 7.941 2496–2690 23.5 9.5CDMA BC0 824–849 25 7.9BC1 1850–1910 25 8.0BC10 817–824 25 7.9

Rev 3 Sep.13 Proprietary and Confidential 174. A label must be affixed to the outside of the end product into which the NM7371 modem is incorporated, with a statement similar to the following:·This device contains FCC ID: PY3NM7371The end product with an embedded NM7371 modem may also need to pass the FCC Part 15 unintentional emission testing requirements and be properly authorized per FCC Part 15.Note: If this module is intended for use in a portable device, additional testing will be required to satisfy RF Exposure, including SAR requirements of FCC Part 2.1093.Collocated transmittersWLAN 2400–2500 27 4.05150–5850 27 4.0Device Technology Band Frequency(MHz)Maximum conducted power(dBm)Maximum antenna gain(dBi)

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Rev 3 Sep.13 Proprietary and Confidential 19AA: AcronymsTable A-1: Acronyms and definitions Acronym or term Definition3GPP 3rd Generation Partnership ProjectAPI Application Programming InterfaceBER Bit Error Rate — A measure of receive sensitivityBLER Block Error RateCDMA Code Division Multiple Access.A wideband spread spectrum technique used in digital cellular, personal communications services, and other wireless networks. Wide channels (1.25 MHz) are obtained through spread spectrum transmissions, thus allowing many active users to share the same channel. Each user is assigned a unique digital code, which differentiates the individual conversations on the same channel.dB Decibel = 10 x log10 (P1 / P2)P1 is calculated power; P2 is reference powerDecibel = 20 x log10 (V1 / V2)V1 is calculated voltage, V2 is reference voltagedBm A logarithmic (base 10) measure of relative power (dB for decibels); relative to milliwatts (m). A dBm value will be 30 units (1000 times) larger (less negative) than a dBW value, because of the difference in scale (milliwatts vs. watts).EDGE Enhanced Data rates for GSM EvolutionEMC Electromagnetic CompatibilityEMI Electromagnetic InterferenceFCC Federal Communications CommissionThe U.S. federal agency that is responsible for interstate and foreign communications. The FCC regulates commercial and private radio spectrum management, sets rates for communications services, determines standards for equipment, and controls broadcast licensing. Consult www.fcc.gov.GLONASS Global Navigation Satellite System — A Russian system that uses a series of 24 satellites in middle circular orbit to provide navigational data.GNSS Global Navigation Satellite Systems (GPS plus GLONASS)GPS Global Positioning SystemAn American system that uses a series of 24 satellites in middle circular orbit to provide navigational data.Host The device into which an embedded module is integratedHz Hertz = 1 cycle / secondLED Light Emitting Diode.A semiconductor diode that emits visible or infrared light.LTE Long Term Evolution—a high-performance air interface for cellular mobile communication systems.

NM7371 Hardware Integration Guide20 Proprietary and Confidential 2400338MHz Megahertz = 10e6 HzMEID Mobile Equipment Identifier — The unique second-generation serial number assigned to the minicard for use on the wireless network.MIMO Multiple Input Multiple Output—wireless antenna technology that uses multiple antennas at both transmitter and receiver side. This improves performance.NAS / AS Network Access ServerNC No ConnectNIC Network Interface CardNMEA National Marine Electronics AssociationOEM Original Equipment Manufacturer—a company that manufactures a product and sells it to a reseller.OFDMA Orthogonal Frequency Division Multiple AccessOMA DM Open Mobile Alliance Device Management — A device management protocol.OTA ‘Over the air’ (or radiated through the antenna)PA Power Amplifierpacket A short, fixed-length block of data, including a header, that is transmitted as a unit in a communications network.PCB Printed Circuit BoardPCS Personal Communication SystemA cellular communication infrastructure that uses the 1.9 GHz radio spectrum.PDN Packet Data NetworkPMI Pre-coding Matrix IndexPSS Primary synchronisation signalPST Product Support ToolsPTCRB PCS Type Certification Review BoardQAM Quadrature Amplitude Modulation.This form of modulation uses amplitude, frequency, and phase to transfer data on the carrier wave.QMI Qualcomm MSM/Modem InterfaceQOS Quality of ServiceQPSK Quadrature Phase-Shift KeyingQPST Qualcomm Product Support ToolsRAT Radio Access TechnologyRF Radio FrequencyTable A-1: Acronyms and definitions (Continued)Acronym or term Definition

Rev 3 Sep.13 Proprietary and Confidential 21RI Ring Indicatorroaming A cellular subscriber is in an area where service is obtained from a cellular service provider that is not the subscriber’s provider.RSE Radiated Spurious EmissionsRSSI Received Signal Strength IndicationSDK Software Development KitSED Smart Error DetectionSensitivity (Audio)Measure of lowest power signal that the receiver can measure.Sensitivity (RF) Measure of lowest power signal at the receiver input that can provide a prescribed BER / BLER / SNR value at the receiver output.SG An LTE signaling interface for SMS (“SMS over SGs”)SIB System Information BlockSIM Subscriber Identity Module. Also referred to as USIM or UICC.SIMO Single Input Multiple Output—smart antenna technology that uses a single antenna at the transmitter side and multiple antennas at the receiver side. This improves performance and security.SISO Single Input Single Output—antenna technology that uses a single antenna at both the transmitter side and the receiver side.SKU Stock Keeping Unit—identifies an inventory item: a unique code, consisting of numbers or letters and numbers, assigned to a product by a retailer for purposes of identification and inventory control.SMS Short Message Service.A feature that allows users of a wireless device on a wireless network to receive or transmit short electronic alphanumeric messages (up to 160 characters, depending on the service provider).S/N Signal-to-noise (ratio)SNR Signal-to-Noise RatioSOF Start of Frame — A USB function.SSS Secondary synchronisation signal.SUPL Secure User Plane LocationTIA/EIA Telecommunications Industry Association / Electronics Industry Association.A standards setting trade organization, whose members provide communications and information technology products, systems, distribution services and professional services in the United States and around the world. Consult www.tiaonline.org.TIS Total Isotropic SensitivityTRP Total Radiated PowerUDK Universal Development Kit (for PCI Express Mini Cards)Table A-1: Acronyms and definitions (Continued)Acronym or term Definition

NM7371 Hardware Integration Guide22 Proprietary and Confidential 2400338UE User EquipmentUICC Universal Integrated Circuit Card (Also referred to as a SIM card.)UL Uplink (mobile to network)orUnderwriters LaboratoryUMTS Universal Mobile Telecommunications SystemUSB Universal Serial BusUSIM Universal Subscriber Identity Module (UMTS)VCC Supply voltageVSWR Voltage Standing Wave RatioWAN Wide Area NetworkWCDMA Wideband Code Division Multiple Access (also referred to as UMTS)WLAN Wireless Local Area NetworkZIF Zero Intermediate FrequencyTable A-1: Acronyms and definitions (Continued)Acronym or term Definition