NM7371 Hardware Integration Guide 2400338 Rev 3
Preface Important Notice Due 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.
NM7371 Hardware Integration Guide Patents This product may contain technology developed by or for NETGEAR Inc. This product includes technology licensed from QUALCOMM®. Copyright ©2013 NETGEAR, Inc. All rights reserved. Trademarks NETGEAR, the NETGEAR logo, AirCard, and Watcher are trademarks of NETGEAR, Inc. in the United States and/or other countries. Other brand names mentioned herein are for identification purposes only and may be trademarks of their respective holder(s).
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Required connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1 1: Introduction The 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 (enduser install) channels.
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2 2: Power Power supply The 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.
NM7371 Hardware Integration Guide Table 2-1: Module power states (Continued) 10 Module cycles between wake (polling the network) and sleep, at network provider-determined interval. • Host power source is disconnected from the module and all voltages associated with the module are at 0 V.
3 3: RF Specifications The NM7371 operates on the frequency bands listed below. RF connections When attaching antennas to the module: Note: To disconnect the antenna, make sure you use the Hirose U.FL connector removal tool (P / N UFL-LP-N-2(01)) to prevent damage to the module or coaxial cable assembly. • Use Hirose U.FL connectors (3 mm x 3 mm, low profile; model U.FL #CL331-0471-0-10) to attach antennas to the module’s connection points.
NM7371 Hardware Integration Guide of 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.).
The 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 interference All 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.
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4 4: Regulatory Compliance and Industry Certfications This 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 States Important notice Because 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.
NM7371 Hardware Integration Guide Important compliance information for North American users Note: 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.
Device Technology Collocated transmitters WLAN Band Frequency (MHz) Maximum conducted power (dBm) Maximum antenna gain (dBi) 2400–2500 27 4.0 5150–5850 27 4.0 4.
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A A: Acronyms Table A-1: Acronyms and definitions Acronym or term Rev 3 Sep.13 Definition 3GPP 3rd Generation Partnership Project API Application Programming Interface BER Bit Error Rate — A measure of receive sensitivity BLER Block Error Rate CDMA Code Division Multiple Access. A wideband spread spectrum technique used in digital cellular, personal communications services, and other wireless networks. Wide channels (1.
NM7371 Hardware Integration Guide Table A-1: Acronyms and definitions (Continued) Acronym or term 20 Definition MHz Megahertz = 10e6 Hz MEID 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.
Table A-1: Acronyms and definitions (Continued) Acronym or term Rev 3 Sep.13 Definition RI Ring Indicator roaming 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 Emissions RSSI Received Signal Strength Indication SDK Software Development Kit SED Smart Error Detection Sensitivity (Audio) Measure of lowest power signal that the receiver can measure.
NM7371 Hardware Integration Guide Table A-1: Acronyms and definitions (Continued) Acronym or term 22 Definition UE User Equipment UICC Universal Integrated Circuit Card (Also referred to as a SIM card.
