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u-blox SARA-R4 Series System Integration Manual

Size-optimized lte cat m1 / nb1 modules
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SARA-R4 series
Size-optimized LTE Cat M1 / NB1 modules
System Integration Manual
Abstract
This document describes the features and the system integration of
SARA-R4 series cellular modules.
These modules are a complete, cost efficient and performance
optimized multi-band LTE Cat M1 / NB1 solution in the compact
SARA form factor.
www.u-blox.com
UBX-16029218 - R06

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Summary of Contents for u-blox SARA-R4 Series

  • Page 1 System Integration Manual Abstract This document describes the features and the system integration of SARA-R4 series cellular modules. These modules are a complete, cost efficient and performance optimized multi-band LTE Cat M1 / NB1 solution in the compact SARA form factor.
  • Page 2 The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information.

  • Page 3: Preface

     Application Note: These documents provide guidelines and information on specific hardware and/or software topics on u-blox cellular modules. See Related documents for a list of Application Notes related to your Cellular Module. How to use this Manual The SARA-R4 series System Integration Manual provides the necessary information to successfully design and configure the u-blox cellular modules.

  • Page 4: Table Of Contents

    SARA-R4 series - System Integration Manual Contents Preface ..........................3 Contents ..........................4 System description ....................... 7 Overview .............................. 7 Architecture ............................9 Pin-out ............................... 10 Operating modes ..........................14 Supply interfaces ..........................16 1.5.1 Module supply input (VCC) ......................16 1.5.2...
  • Page 5 Module placement .......................... 73 2.11 Module footprint and paste mask ....................74 2.12 Thermal guidelines .......................... 75 2.13 Schematic for SARA-R4 series module integration ................76 2.13.1 Schematic for SARA-R4 series modules ..................76 2.14 Design-in checklist .......................... 77 2.14.1 Schematic checklist ........................
  • Page 6 SARA-R4 series - System Integration Manual 3.3.8 Rework ............................82 3.3.9 Conformal coating ........................82 3.3.10 Casting ............................82 3.3.11 Grounding metal covers ......................82 3.3.12 Use of ultrasonic processes ......................82 Approvals ........................83 Product certification approval overview ....................83 US Federal Communications Commission notice .................

  • Page 7: System Description

    1 System description 1.1 Overview The SARA-R4 series comprises LTE Cat M1 / NB1 multi-mode modules in the miniature SARA LGA form-factor (26.0 x 16.0 mm, 96-pin), that allows an easy integration in compact designs and a seamless drop-in migration from u-blox cellular module families.
  • Page 8 LTE category NB1:  up to 62.5 kb/s UL  up to 27.2 kb/s DL Table 2: SARA-R4 series LTE Cat M1 / NB1 characteristics summary Supported in LTE category M1 only UBX-16029218 - R06 System description Page 8 of 102...

  • Page 9: Architecture

    SARA-R4 series - System Integration Manual 1.2 Architecture Figure 1 summarizes the internal architecture of SARA-R4 series modules. Filter Switch SIM card detection transceiver UART Cellular DDC (I BaseBand Processor SDIO Memory 19.2 MHz SPI / Digital Audio VCC (Supply)

  • Page 10: Pin-Out

    SARA-R4 series - System Integration Manual 1.3 Pin-out Table 3 lists the pin-out of the SARA-R4 series modules, with pins grouped by function. Function Pin Name Pin No Description Remarks Power 51, 52, 53 Module supply input VCC supply circuit affects the RF performance and compliance of the device integrating the module with applicable required certification schemes.
  • Page 11 USB_D- USB Data Line D- USB interface for AT commands, data communication, FOAT, FW update by u-blox dedicated tool and diagnostic. 90  nominal differential impedance (Z 30  nominal common mode impedance (Z Pull-up or pull-down resistors and external series resistors as required by the USB 2.0 specifications [4] are part of the...
  • Page 12 SARA-R4 series - System Integration Manual Function Pin Name Pin No Description Remarks I2S_WA / SPI MOSI SPI Master Output Slave Input, alternatively configurable as SPI_MOSI S word alignment Not supported by “00”, “01” and “02” product versions. See section 1.9.3 for functional description.
  • Page 13 This pin can be connected to GND. See sections 1.12 and 2.9 RSVD 2, 31 Reserved pin Leave unconnected. See sections 1.12 and 2.9 Table 3: SARA-R4 series module pin definition, grouped by function UBX-16029218 - R06 System description Page 13 of 102...

  • Page 14: Operating Modes

    SARA-R4 series - System Integration Manual 1.4 Operating modes SARA-R4 series modules have several operating modes. The operating modes are defined in Table 4 and described in detail in Table 5, providing general guidelines for operation. General Status Operating Mode...
  • Page 15 RF Tx/Rx activity is necessary. When a data connection is terminated, the module returns to the active-mode. Table 5: SARA-R4 series modules operating modes description Figure 2 describes the transition between the different operating modes. powered Apply VCC...

  • Page 16: Supply Interfaces

    The modules must be supplied via the three VCC pins that represent the module power supply input. During operation, the current drawn by the SARA-R4 series modules through the VCC pins can vary by several orders of magnitude, depending on the operating mode and state (as described in sections 1.5.1.2, 1.5.1.3 and 1.5.1.4).
  • Page 17 1.5.1.2 VCC current consumption in connected-mode During an LTE Category M1 connection, the SARA-R4 series modules transmit and receive in half duplex mode. The current consumption depends on output RF power, which is always regulated by the network (the current base station) sending power control commands to the module.

  • Page 18: Generic Digital Interfaces Supply Output (V_Int)

    19.2 MHz reference clock frequency is used. If power saving configuration is disabled, as it is by default (see SARA-R4 series AT Commands Manual [2], +CPSMS AT command for details), the module does not automatically enter the PSM low power deep sleep mode whenever possible: the module remains in active mode.

  • Page 19: System Function Interfaces

    PWR_ON input pin for a valid time. When the SARA-R4 series modules are in the power-off mode (i.e. switched off) or in the PSM low power mode, with a valid VCC supply applied, they can be switched on as follows: ...

  • Page 20: Module Power-Off

    It is highly recommended to avoid an abrupt removal of the VCC supply during SARA-R4 series modules normal operations. An abrupt hardware shutdown occurs on SARA-R4 series modules when a low level is applied on RESET_N pin. In this case, the current parameter settings are not saved in the module’s non-volatile memory and a proper network detach is not performed.

  • Page 21: Module Reset

     A low pulse with appropriate time duration (see SARA-R4 series Data Sheet [1]) is applied at the PWR_ON input pin. ...

  • Page 22: Antenna Interface

    1.7 Antenna interface 1.7.1 Antenna RF interface (ANT) SARA-R4 series modules provide an RF interface for connecting the external antenna. The ANT pin represents the primary RF input/output for transmission and reception of LTE RF signals. The ANT pin has a nominal characteristic impedance of 50  and must be connected to the primary Tx / Rx antenna through a 50 ...

  • Page 23: Antenna Detection Interface (Ant_Det)

    The antenna detection function provided by ANT_DET pin is an optional feature that can be implemented if the application requires it. The antenna detection is forced by the +UANTR AT command. See the SARA-R4 series AT Commands Manual [2] for more details on this feature.

  • Page 24: Data Communication Interfaces

    DTR input of the module has to be set low (= ON state) to have URCs presented over UART interface. For the definition of the interface data mode, command mode and online command mode see SARA-R4 series AT Commands Manual [1]...
  • Page 25 SARA-R4 series - System Integration Manual SARA-R4 series modules’ UART interface is by default configured in AT command mode, if the USB interface is not enabled as AT command / data communication interface (UART and USB cannot be concurrently used for this purpose): the module waits for AT command instructions and interprets all the characters received as commands to execute.

  • Page 26: Usb Interface

    The SPI interface can be made available as alternative function, in mutually exclusive way, over the digital audio interface pins (I2S_WA / SPI_MOSI, I2S_RXD / SPI_MISO, I2S_CLK / SPI_CLK, I2S_TXD / SPI_CS). For the definition of the interface data mode, command mode and online command mode see SARA-R4 series AT Commands Manual [2] UBX-16029218 - R06...

  • Page 27: Sdio Interface

    S interface pins should not be driven by any external device. SARA-R4 series modules support VoLTE (Voice over LTE Cat M1 radio bearer) for providing audio services. SARA-R4 series modules include an I S digital audio interface to transfer digital audio data to/from an external compatible audio device.

  • Page 28: General Purpose Input/Output

    SARA-R4 series modules include six pins (GPIO1-GPIO6) which can be configured as General Purpose Input/Output or to provide custom functions via u-blox AT commands (for more details see the SARA-R4 series AT Commands Manual [2], +UGPIOC, +UGPIOR, +UGPIOW AT commands), as summarized in Table 8.

  • Page 29: System Features

    For more details on embedded TCP/IP and UDP/IP functionalities see SARA-R4 series AT Commands Manual [2]. 1.13.5 FTP SARA-R4 series provide embedded File Transfer Protocol (FTP) services. Files are read and stored in the local file system of the module.

  • Page 30: Http

    After completing the upgrade, the module is reset again and wakes-up in normal boot. For more details about Firmware update Over AT procedure, see the SARA-R4 series AT Commands Manual [2], +UFWUPD AT command.
  • Page 31 SARA-R4 series - System Integration Manual UBX-16029218 - R06 System description Page 31 of 102...
  • Page 32 Two timers have been specified on the PSM Signaling: the “Periodic Update Timer” and “Active Timer”. The “Active Timer” is the time defined by the network where the SARA-R4 series module will keep listening for any active operation, during this time the SARA-R4 series module is in Active mode.
  • Page 33 From the host application point of view, the SARA-R4 module will look as it is in Power-Off mode. 1.13.9.6 Normal operation The Host Application can force the SARA-R4 series module to transition from PSM low power deep sleep mode to Active mode by using the Power Up procedure specified in section 1.6.1.

  • Page 34: Design-In

    2 Design-in 2.1 Overview For an optimal integration of SARA-R4 series modules in the final application board follow the design guidelines stated in this section. Every application circuit must be properly designed to guarantee the correct functionality of the relative interface, however a number of points require high attention during the design of the application device.

  • Page 35: Supply Interfaces

    The switching step-down regulator is the typical choice when the available primary supply source has a nominal voltage much higher (e.g. greater than 5 V) than the operating supply voltage of SARA-R4 series. The use of switching step-down provides the best power efficiency for the overall application and minimizes current drawn from the main supply source.
  • Page 36 See sections 2.2.1.6 and 2.2.1.7 for specific design-in. An appropriate primary (not rechargeable) battery can be selected taking into account the maximum current specified in SARA-R4 series Data Sheet [1] during connected-mode, considering that primary cells might have weak power capability. See section 2.2.1.5 for specific design-in.
  • Page 37 SARA-R4 series - System Integration Manual Figure 11 and Table 9 show an example of a high reliability power supply circuit, where the module VCC input is supplied by a step-down switching regulator capable of delivering maximum current with low output ripple and with fixed switching frequency in PWM mode operation greater than 1 MHz.
  • Page 38 SARA-R4 series - System Integration Manual 2.2.1.3 Guidelines for VCC supply circuit design using a Low Drop-Out linear regulator The use of a linear regulator is suggested when the difference from the available supply rail source and the VCC value is low. The linear regulators provide high efficiency when transforming a 5 VDC supply to a voltage value within the module VCC normal operating range.
  • Page 39 2.2.1.6 Guidelines for external battery charging circuit SARA-R4 series modules do not have an on-board charging circuit. Figure 13 provides an example of a battery charger design, suitable for applications that are battery powered with a Li-Ion (or Li-Polymer) cell.
  • Page 40 SARA-R4 series - System Integration Manual Li-Ion/Li-Polymer SARA-R4 series Battery Charger IC Vbat Supply Li-Ion/Li-Pol Battery Pack THERM θ STAT2 PROG STA1 Figure 13: Li-Ion (or Li-Polymer) battery charging application circuit Reference Description Part Number - Manufacturer Li-Ion (or Li-Polymer) battery pack with 470  NTC...
  • Page 41 SARA-R4 series - System Integration Manual Power path management IC System 12 V Vout Primary Source DC/DC converter and battery FET control logic Li-Ion/Li-Pol Battery Pack Vbat Charge controller θ Figure 14: Charger / regulator with integrated power path management circuit block diagram...
  • Page 42 SARA-R4 series - System Integration Manual Li-Ion/Li-Polymer Battery Charger / Regulator with Power Path Managment SARA-R4 series Primary Source Li-Ion/Li-Pol VLIM Battery Pack ILIM θ ISET C7 C8 AGND PGND Figure 15: Li-Ion (or Li-Polymer) battery charging and power path management application circuit...
  • Page 43 2.2.1.8 Guidelines for removing VCC supply Removing the VCC power can be useful to minimize the current consumption when the SARA-R4 series modules are switched off or when the modules are in deep sleep Power Saving Mode. In applications in which the module is paired to a host application processor equipped with a RTC, the module...
  • Page 44 SARA-R4 series - System Integration Manual 2.2.1.9 Additional guidelines for VCC supply circuit design To reduce voltage drops, use a low impedance power source. The series resistance of the power supply lines (connected to the modules’ VCC and GND pins) on the application board and battery pack should also be considered and minimized: cabling and routing must be as short as possible to minimize power losses.
  • Page 45 RF signal. This is more likely to happen with switching DC-DC converters, in which case it is better to select the highest operating frequency for the switcher and add a large L-C filter before connecting to the SARA-R4 series modules in the worst case ...

  • Page 46: Generic Digital Interfaces Supply Output (V_Int)

    2.2.2.1 Guidelines for V_INT circuit design SARA-R4 series provide the V_INT generic digital interfaces 1.8 V supply output, which can be mainly used to:  Indicate when the module is switched on and it is not in the deep sleep power saving mode (as described in sections 1.6.1, 1.6.2)

  • Page 47: System Functions Interfaces

    The power-on circuit (PWR_ON) requires careful layout since it is the sensitive input available to switch on and switch off the SARA-R4 series modules. It is required to ensure that the voltage level is well defined during operation and no transient noise is coupled on this line, otherwise the module might detect a spurious power-on request.

  • Page 48: Module Reset (Reset_N)

    Guidelines for RESET_N circuit design SARA-R4 series RESET_N is equipped with an internal pull-up; an external pull-up resistor is not required. If connecting the RESET_N input to a push button, the pin will be externally accessible on the application device.

  • Page 49: Antenna Interface

    SARA-R4 series - System Integration Manual 2.4 Antenna interface SARA-R4 series modules provide an RF interface for connecting the external antenna: the ANT pin represents the RF input/output for RF signals transmission and reception. The ANT pin has a nominal characteristic impedance of 50  and must be connected to the physical antenna through a 50 ...
  • Page 50 SARA-R4 series - System Integration Manual In both of cases, selecting external or internal antennas, these recommendations should be observed:  Select an antenna providing optimal return loss (or V.S.W.R.) figure over all the operating frequencies.  Select an antenna providing optimal efficiency figure over all the operating frequencies.
  • Page 51 SARA-R4 series - System Integration Manual Figure 21 and Figure 22 provide two examples of proper 50  coplanar waveguide designs. The first example of RF transmission line can be implemented in case of 4-layer PCB stack-up herein described, and the second example of RF transmission line can be implemented in case of 2-layer PCB stack-up herein described.
  • Page 52 SARA-R4 series - System Integration Manual Additionally to the 50  impedance, the following guidelines are recommended for transmission lines design:  Minimize the transmission line length: the insertion loss should be minimized as much as possible, in the order of a few tenths of a dB, ...
  • Page 53 SARA-R4 series - System Integration Manual Guidelines for RF termination design The RF termination must provide a characteristic impedance of 50  as well as the RF transmission line up to the RF termination, to match the characteristic impedance of the ANT port.
  • Page 54 SARA-R4 series - System Integration Manual Examples of antennas Table 17 lists some examples of possible internal on-board surface-mount antennas. Manufacturer Part Number Product Name Description Taoglas PA.710.A Warrior GSM / WCDMA / LTE SMD Antenna 698..960 MHz, 1710..2170 MHz, 2300..2400 MHz, 2490..2690 MHz 40.0 x 6.0 x 5.0 mm...
  • Page 55 SARA-R4 series - System Integration Manual Table 18 lists some examples of possible internal off-board PCB-type antennas with cable and connector. Manufacturer Part Number Product Name Description Taoglas FXUB63.07.0150C GSM / WCDMA / LTE PCB Antenna with cable and U.FL 698..960 MHz, 1575.42 MHz, 1710..2170 MHz, 2400..2690 MHz...

  • Page 56: Antenna Detection Interface (Ant_Det)

    SARA-R4 series - System Integration Manual 2.4.2 Antenna detection interface (ANT_DET) 2.4.2.1 Guidelines for ANT_DET circuit design Figure 24 and Table 20 describe the recommended schematic / components for the antenna detection circuit that must be provided on the application board and for the diagnostic circuit that must be provided on the antenna’s assembly to achieve primary and secondary antenna detection functionality.
  • Page 57  Values close to the measurement range maximum limit (approximately 50 k) or an open-circuit “over range” report (see SARA-R4 series AT Commands Manual [2]) means that that the antenna is not connected or the RF cable is broken. ...
  • Page 58 SARA-R4 series - System Integration Manual 2.4.2.2 Guidelines for ANT_DET layout design Figure 25 describes the recommended layout for the antenna detection circuit to be provided on the application board to achieve antenna detection functionality, implementing the recommended schematic described in the previous Figure 24 and Table 20: ...

  • Page 59: Sim Interface

    SARA-R4 series - System Integration Manual 2.5 SIM interface 2.5.1 Guidelines for SIM circuit design Guidelines for SIM cards, SIM connectors and SIM chips selection The ISO/IEC 7816, the ETSI TS 102 221 and the ETSI TS 102 671 specifications define the physical, electrical and...
  • Page 60 SARA-R4 series - System Integration Manual Guidelines for single SIM card connection without detection A removable SIM card placed in a SIM card holder has to be connected to the SIM card interface of SARA-R4 series modules as described in Figure 26, where the optional SIM detection feature is not implemented.
  • Page 61 SARA-R4 series - System Integration Manual Guidelines for single SIM chip connection A solderable SIM chip (M2M UICC Form Factor) has to be connected the SIM card interface of SARA-R4 series modules as described in Figure 27. Follow these guidelines to connect the module to a solderable SIM chip without SIM presence detection: ...
  • Page 62 SARA-R4 series - System Integration Manual Guidelines for single SIM card connection with detection An application circuit for the connection to a single removable SIM card placed in a SIM card holder is described in Figure 28, where the optional SIM card detection feature is implemented.

  • Page 63: Guidelines For Sim Layout Design

    The layout of the SIM card interface lines (VSIM, SIM_CLK, SIM_IO, SIM_RST may be critical if the SIM card is placed far away from the SARA-R4 series modules or in close proximity to the RF antenna: these two cases should be avoided or at least mitigated as described below.

  • Page 64: Data Communication Interfaces

    SARA-R4 series - System Integration Manual 2.6 Data communication interfaces 2.6.1 UART interface 2.6.1.1 Guidelines for UART circuit design Providing the full RS-232 functionality (using the complete V.24 link) If RS-232 compatible signal levels are needed, two different external voltage translators can be used to provide full RS-232 (9 lines) functionality: e.g.
  • Page 65 SARA-R4 series - System Integration Manual Providing the TXD, RXD, RTS, CTS and DTR lines only (not using the complete V.24 link) If the functionality of the DSR, DCD and RI lines is not required, or the lines are not available: ...
  • Page 66 Connect the module DTR input to GND using a 0  series resistor, since it may be useful to set DTR active if not specifically handled, in particular to have URCs presented over UART interface (see SARA-R4 series AT Commands Manual [1], &D, S0, +CNMI AT commands) ...
  • Page 67 Connect the module DTR input line to GND using a 0  series resistor, because it is useful to set DTR active if not specifically handled, in particular to have URCs presented over UART interface (see SARA-R4 series AT Commands Manual [1], &D, S0, +CNMI AT commands) ...
  • Page 68 SARA-R4 series - System Integration Manual Additional considerations If a 3.0 V Application Processor (DTE) is used, the voltage scaling from any 3.0 V output of the DTE to the corresponding 1.8 V input of the module (DCE) can be implemented as an alternative low-cost solution, by means of an appropriate voltage divider.

  • Page 69: Usb Interface

    The USB interface of the module is enabled only if a valid voltage is detected by the VUSB_DET input (see the SARA-R4 series Data Sheet [1]). Neither the USB interface, nor the whole module is supplied by the VUSB_DET input: the VUSB_DET senses the USB supply voltage and absorbs few microamperes.
  • Page 70 SARA-R4 series - System Integration Manual 2.6.2.2 Guidelines for USB layout design The USB_D+ / USB_D- lines require accurate layout design to achieve reliable signaling at the high speed data rate (up to 480 Mb/s) supported by the USB serial interface.

  • Page 71: Spi Interface

    The DDC I C-bus master interface can be used to communicate with u-blox GNSS receivers and other external C-bus slaves as an audio codec. The SDA and SCL pins of the module are open drain output as per I C bus specifications [9], and they have internal pull-up resistors to the V_INT 1.8 V supply rail of the module, so there is no need of additional...

  • Page 72: General Purpose Input/Output

    SARA-R4 series - System Integration Manual 2.8 General Purpose Input/Output 2.8.1.1 Guidelines for GPIO circuit design A typical usage of SARA-R4 series modules’ GPIOs can be the following:  Network indication provided over GPIO1 pin (see Figure 40 / Table 29 below) ...

  • Page 73: Module Placement

    The heat dissipation during continuous transmission at maximum power can significantly raise the temperature of the application base-board below the SARA-R4 series modules: avoid placing temperature sensitive devices close to the module.

  • Page 74: Module Footprint And Paste Mask

    O’’ Stencil: 150 H’ H’’ µm J’ J’’ F’ F’’ F’ F’’ Figure 41: SARA-R4 series modules suggested footprint and paste mask (application board top view) Parameter Value Parameter Value Parameter Value 26.0 mm 1.10 mm 2.75 mm 16.0 mm H’...

  • Page 75: Thermal Guidelines

    During transmission at maximum RF power the SARA-R4 series modules generate thermal power that may exceed 0.5 W: this is an indicative value since the exact generated power strictly depends on operating condition such as the actual antenna return loss, the transmitting frequency band, etc.

  • Page 76: Schematic For Sara-R4 Series Module Integration

    2.13.1 Schematic for SARA-R4 series modules Figure 42 is an example of a schematic diagram where a SARA-R4 series module “00” or “01” product version is integrated into an application board, using all the available interfaces and functions of the module.

  • Page 77: Design-In Checklist

    Provide proper precautions for EMC / ESD immunity as required on the application board.  Do not apply voltage to any generic digital interface pin of SARA-R4 series modules before the switch- on of the generic digital interface supply source (V_INT).

  • Page 78: Layout Checklist

    USB, and other data lines).  Optimize placement for minimum length of RF line.  Check the footprint and paste mask designed for SARA-R4 series module as illustrated in section 2.11.  VCC line should be wide and as short as possible. ...

  • Page 79: Handling And Soldering

    3.1 Packaging, shipping, storage and moisture preconditioning For information pertaining to SARA-R4 series reels / tapes, Moisture Sensitivity levels (MSD), shipment and storage information, as well as drying for preconditioning, see the SARA-R4 series Data Sheet [1] and the u-blox Package Information Guide [15].

  • Page 80: Soldering

    3.3 Soldering 3.3.1 Soldering paste "No Clean" soldering paste is strongly recommended for SARA-R4 series modules, as it does not require cleaning after the soldering process has taken place. The paste listed in the example below meets these criteria. Soldering Paste: OM338 SAC405 / Nr.143714 (Cookson Electronics)

  • Page 81: Optical Inspection

    Figure 43: Recommended soldering profile The modules must not be soldered with a damp heat process. 3.3.3 Optical inspection After soldering the SARA-R4 series modules, inspect the modules optically to verify that the module is properly aligned and centered. 3.3.4 Cleaning Cleaning the modules is not recommended.

  • Page 82: Repeated Reflow Soldering

    EMI covers is done at the customer's own risk. The numerous ground pins should be sufficient to provide optimum immunity to interferences and noise. u-blox gives no warranty for damages to the cellular modules caused by soldering metal cables or any other forms of metal strips directly onto the EMI covers.

  • Page 83: Approvals

    The required certification scheme approvals and relative testing specifications differ depending on the country or the region where the device that integrates SARA-R4 series modules must be deployed, on the relative vertical market of the device, on type, features and functionalities of the whole application device, and on the network operators where the device must operate.

  • Page 84: Us Federal Communications Commission Notice

    The gain of the system antenna(s) used for the SARA-R4 series modules (i.e. the combined transmission line, connector, cable losses and radiating element gain) must not exceed the value...

  • Page 85: Modifications

    Manufacturers of mobile or fixed devices incorporating the SARA-R4 series modules are authorized to use the FCC Grants of the SARA-R4 series modules for their own final products according to the conditions referenced in the certificates.

  • Page 86: Modifications

    The gain of the system antenna(s) used for the SARA-R4 series modules (i.e. the combined transmission line, connector, cable losses and radiating element gain) must not exceed the value...
  • Page 87 Informations concernant l'exposition aux fréquences radio (RF) La puissance de sortie émise par l’appareil de sans fil u-blox Cellular Module est inférieure à la limite d'exposition aux fréquences radio d'Innovation, Sciences et Développement économique Canada (ISDE). Utilisez l’appareil de sans fil u-blox Cellular Module de façon à minimiser les contacts humains lors du fonctionnement normal.

  • Page 88: Product Testing

    5 Product testing 5.1 u-blox in-series production test u-blox focuses on high quality for its products. All units produced are fully tested automatically in production line. Stringent quality control process has been implemented in the production line. Defective units are analyzed in detail to improve the production quality.

  • Page 89: Test Parameters For Oem Manufacturer

    See the SARA-R4 series AT Commands Manual [2] and the End user test Application Note [14], for the AT+UTEST command syntax description and detail guide of usage.
  • Page 90 The use of this feature is intended for testing purpose in controlled environments by qualified user and must not be used during the normal module operation. Follow instructions suggested in u-blox documentation. u-blox assumes no responsibilities for the inappropriate use of this feature.

  • Page 91: Appendix

    SARA-G3 2G modules, SARA-U2 3G/2G modules, SARA-R4 LTE Cat M1/NB1 modules and SARA-N2 LTE Cat NB1 modules have exactly the same u-blox SARA form factor (26.0 x 16.0 mm, 96-pin LGA), with compatible pin assignment as described in Figure 46, so that the modules can be alternatively mounted on a single application board using exactly the same copper mask, solder mask and paste mask.
  • Page 92 1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200 = LTE Cat NB1 bands Figure 48: Summary of operating frequency bands supported by SARA-G3, SARA-U2, SARA-R4 and SARA-R4 series modules UBX-16029218 - R06 Appendix Page 92 of 102...

  • Page 93: Pin-Out Comparison Between Sara-G3, Sara-U2, Sara-R4 And Sara-N2 Modules

    SARA-R4 series - System Integration Manual A.2 Pin-out comparison between SARA-G3, SARA-U2, SARA-R4 and SARA-N2 modules SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration Ground Ground Ground Ground V_BCKP...
  • Page 94 SARA-R4 series - System Integration Manual SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration Ground Ground Ground Ground PWR_ON Power-on Input PWR_ON Power-on Input PWR_ON Power-on Input RSVD Reserved...
  • Page 95 SARA-R4 series - System Integration Manual SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration GPIO2 / GPIO (G340/G350) GPIO2 GPIO GPIO2 GPIO RSVD Reserved GPIO vs Reserved RSVD Reserved (G300/G310) V_INT level (1.8 V)
  • Page 96 SARA-R4 series - System Integration Manual SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration I2S_WA / S Word Align.(G340/G350) I2S_WA S Word Alignment I2S_WA / S Word Alignm / SPI MOSI...
  • Page 97 SARA-R4 series - System Integration Manual SARA-G3 SARA-U2 SARA-R4 SARA-N2 Pin Name Description Pin Name Description Pin Name Description Pin Name Description Remarks for migration 51-53 Module Supply Input Module Supply Input Module Supply Input Module Supply Input Diverse voltage levels.

  • Page 98: B Glossary

    SARA-R4 series - System Integration Manual B Glossary 3GPP 3rd Generation Partnership Project 8-PSK 8 Phase-Shift Keying modulation 16QAM 16-state Quadrature Amplitude Modulation Abstract Control Model Analog to Digital Converter Application Processor ASIC Application-Specific Integrated Circuit AT Command Interpreter Software Subsystem, or attention...
  • Page 99 Not Applicable N.A. Not Available Non Access Stratum Network Control Model Original Equipment Manufacturer device: an application device integrating a u-blox cellular module Over The Air Power Amplifier Pulse Code Modulation Product Change Notification / Sample Delivery Note / Information Note...

  • Page 100: Related Documents

    [20] u-blox SARA-N2 series System Integration Manual, Docu No UBX-17005143 [21] u-blox Nested Design Application Note, Docu No UBX-16007243 Some of the above documents can be downloaded from u-blox web-site (http://www.u-blox.com/). UBX-16029218 - R06 Related documents Page 100 of 102...

  • Page 101: Revision History

    SARA-R4 series - System Integration Manual Revision history Revision Date Name Status / Comments 31-Jan-2017 sfal Initial release for SARA-R4 series modules 05-May-2017 sfal / sses Updated supported features and characteristics Extended document applicability to SARA-R410M-01B product version 24-May-2017 sses...

  • Page 102: Contact

    SARA-R4 series - System Integration Manual Contact For complete contact information visit us at http://www.u-blox.com/ u-blox Offices North, Central and South America Headquarters Asia, Australia, Pacific Europe, Middle East, Africa u-blox America, Inc. u-blox Singapore Pte. Ltd. u-blox AG Phone:...

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