Courier M2M 3G Cellular Modem USR3500 Reference Guide
Reference Guide 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.
Reference Guide SIERRA WIRELESS AND/OR USROBOTICS AND/OR THEIR RESPECTIVE AFFILIATES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.
Reference Guide SPECIFIC DISCLAIMERS OF LIABILITY: CUSTOMER RECOGNIZES AND ACKNOWLEDGES SIERRA WIRELESS IS NOT RESPONSIBLE FOR AND SHALL NOT BE HELD LIABLE FOR ANY DEFECT OR DEFICIENCY OF ANY KIND OF CELLULAR OR GPS (INCLUDING A-GPS) SERVICES. Patents This product may contain technology developed by or for Sierra Wireless, Inc. This product includes technology licensed from QUALCOMM®. This product is manufactured or sold by Sierra Wireless, Inc.
Reference Guide Document History Version 1.0 Date Updates Initial release Rev 1.
Contents CONTENTS ................................................................................................................ 6 LIST OF FIGURES ..................................................................................................... 8 LIST OF TABLES....................................................................................................... 9 1. FUNCTIONAL SPECIFICATIONS ...................................................................... 11 1.1.
Reference Guide 7. RECOMMENDATIONS WHEN USING THE USR3500 ON TRUCKS ............... 48 7.1. Recommended Power Supply Connection on Trucks ............................... 48 7.2. Technical Constraints on Trucks ............................................................... 49 8. RELIABILITY COMPLIANCE AND RECOMMENDED STANDARDS............... 50 8.1. Reliability Compliance ............................................................................... 50 8.2.
List of Figures Figure 1. Functional Architecture ............................................................................11 Figure 2. RF Architecture ........................................................................................12 Figure 3. USR3500 Mechanical Drawing ................................................................14 Figure 4. Front Interface .........................................................................................15 Figure 5.
List of Tables Table 1. Power Supply Electrical Characteristics ...................................................13 Table 2. Power Supply Connector Pin Description .................................................16 Table 3. GPIO Pin Description ................................................................................17 Table 4. GPIO Pin Operating Conditions when Vref is at 2.8V ...............................17 Table 5.
Reference Guide Functional Specifications Table 33. USR3500 Operating Modes Feature Availability .....................................43 Table 34. Power Consumption of USR3500 in Connected Mode with Serial Port OFF, Flash LED OFF and USB ON (typical values) ..................................................44 Table 35. Power Consumption of USR3500 in Non-Connected Mode with UART ON, FLASH LED OFF and USB OFF (typical values) ...............................................
1. Functional Specifications This section discusses the functional specifications of the USR3500. 1.1. Functional Architecture The global architecture of the USR3500 is shown in the figure below. Figure 1. Functional Architecture Rev 1.
Reference Guide 1.2. Figure 2. 1.3. Functional Specifications RF Functionalities RF Architecture Operating System The modem is Open AT Application Framework compliant. With the Courier M2M Open AT application loaded, the modem becomes a solution for many specific market needs. The operating system of the modem is responsible for the following functions: • • AT Command processing Real Time Clock (RTC) with calendar Rev 1.
2. Technical Specifications 2.1. Power Supply The modem is supplied by an external DC voltage, DC-IN, with a voltage range of +4.75V to +32V. The main regulation is made with an internal DC/DC converter in order to supply all the internal functions with a DC voltage. The correct operation of the modem in Communication mode is not guaranteed if the input voltage falls below 4.75V. Refer to the following table for the modem’s operating voltage range and maximum current. Table 1.
Reference Guide 2.2. Figure 3. Technical Specifications Mechanical Specifications USR3500 Mechanical Drawing Rev 1.
3. Interfaces This section describes the different interfaces that connect with the USR3500. The modem comes with the following interfaces: • • • • • • • • 10-pin Micro-Fit Connector USB Interface (mini-B connector) 15-pin Sub-D Serial Interface Main RF Interface Secondary RF Interface GPS RF Interface SIM Interface LED Status Indicator 3.1. Front Interface 10-pin Micro-Fit Connector 15-pin Sub-D Serial Interface Mini-B USB Interface Figure 4. Front Interface 3.1.1.
Reference Guide Figure 5. Interfaces Power Supply Connector Refer to the following table for the pin description of the power supply connector. Table 2. Power Supply Connector Pin Description Pin # Signal Description 1 GPIO25/INT1 General purpose input/output or Interrupt 2 GPIO35 General purpose input/output 3 Vref Voltage reference for the GPIOs 4 Reserved Reserved 5 Reserved Reserved 6 GND Ground 7 DC-IN Input Supply for the modem (4.
Reference Guide Interfaces Refer to the following table for the pin description of the GPIOs. Table 3. GPIO Pin Description Pin # Signal I/O I/O Voltage Description 1 GPIO25/INT 1 I/O Vref General purpose input/output or Interrupt 2 GPIO35 I/O Vref General purpose input/output 3 Vref I 2.8V ~ 15V Voltage reference for the GPIOs Note: It is recommended to use a 6-wire cable accessory for easy access to these three lines. Please refer to the Getting Started Guide at http://www.usr.
Reference Guide Interfaces Figure 7. Equivalent Circuit of VIH, Vref = 2.8V Figure 8. Equivalent Circuit of VOL, Vref = 2.8V Figure 9. Equivalent Circuit of VOH, Vref = 2.8V With Vref > 2.8V, both GPIO35 and GPIO25 may be interfaced with a component that complies with the following levels. Table 5. GPIO Pin Operating Conditions when Vref > 2.8V Parameter Min VIL VIH Max Condition 0.84V Please refer to Figure 10. 1.96V Please refer to Figure 11. Vref + 0.
Reference Guide * Interfaces Value without external load. Figure 10. Equivalent Circuit of VIL, Vref > 2.8V Figure 11. Equivalent circuit of VIH, Vref > 2.8V Figure 12. Equivalent circuit of VOL, Vref > 2.8V Figure 13. Equivalent circuit of VOH, Vref > 2.8V The GPIO pin is mainly used to: • Act as a switch for a transistor when the GPIO is configured as output. Rev 1.
Reference Guide • Interfaces Act as a status reading when the GPIO is configured as input. The GPIOs may be controlled with the following AT commands: • • AT+WIOW an output AT+WIOR as an input for write access to the GPIO value, when the GPIO is used as for read access to the GPIO value, when the GPIO is used [1] By default, and when the modem has been reset, both GPIOs are configured as inputs. The AT command AT+WIOM must be used to change this configuration.
Reference Guide 3.1.1.2. Interfaces ON/OFF Pin The modem has an external ON/OFF pin which is used to turn the device ON or OFF. The following table describes the operation of this pin. Table 6. ON/OFF Pin Operation Condition State Power Supply Operation 1 Open When 4.75V to 32V supply is applied. The modem is turned ON. 2 Pulled to GND When 4.75V to 32V supply is applied. The modem remains OFF. 3 Left open when turning ON the modem, then pulled to GND 4.
Reference Guide Interfaces Refer to the following table for the pin description of the 15-pin serial connector. Table 8. Serial Connector Pin Description Pin # Signal I/O I/O Type Reset State Description 1 CT109/DCD O +/- 5.5V Undefined Data Carrier Detect 2 CT103/TXD I +/- 5.5V Z Transmit Serial Data 3 Reserved 4 CMIC2P I Analog Microphone positive input 5 CMIC2N I Analog Microphone negative input 6 CT104/RXD O +/- 5.5V 1 Receive Serial Data 7 CT107/DSR O +/- 5.
Reference Guide Figure 15. Interfaces RS232 Serial Link Signals The RS232 interface has been designed to allow flexibility in the use of the serial interface signals. However, the use of TXD, RXD, CTS and RTS signals are mandatory; while the use of DTR, DSR, DCD and RI signals are optional. Tip: The modem is designed to operate using all serial interface signals and it is recommended to use CT105/RTS and CT106/CTS for hardware flow control in order to avoid data corruption during transmission.
Reference Guide Figure 16. Interfaces V24 Serial Link Implementation for a 5-wire UART 3.1.2.2.2. 4-wire Serial Interface RS232 Implementation The signals used in this interface are as follows: • • • • CT103/TXD CT104/RXD CT105/RTS CT106/CTS Figure 17. V24 Serial Link Implementation for a 4-wire UART 3.1.2.2.3. 2-wire Serial Interface RS232 Implementation The signals used in this interface are as follows: • • Note: CT103/TXD CT104/RXD Although this case is possible, it is not recommended.
Reference Guide Figure 18. Interfaces V24 Serial Link Implementation for a 2-wire UART The CT105/RTS and the CT106/CTS signals are not used in this configuration. Configure the AT command AT+IFC=0,0 to disable the flow control function. Refer to the AT Commands Interface Guide at http://www.usr.com/support/3500 for more information regarding AT Commands. For more information on how to use the RS232 serial link to communicate with the modem, refer to section 3.1.2.1 RS232 Serial Link Connection. 3.1.2.
Reference Guide 3.1.2.5. Interfaces Audio Lines Connection The modem supports one microphone input and one speaker output. 3.1.2.5.1. Microphone The microphone inputs are connected in differential mode to reject common mode noise and TDMA noise. The microphone inputs have already included biasing for an electret microphone (0.5mA and 2V) and are ESD protected. An electret microphone may be directly connected to these inputs allowing an easy connection to a headset.
Reference Guide Interfaces * The input voltage depends of the input micro gain set by AT command. Refer to the AT Commands Interface Guide at http://www.usr.com/support/3500. ** Because CMICxP is internally biased, it is necessary to use a coupling capacitor to connect an audio signal provided by an active generator. Only a passive microphone can be directly connected to the CMICxP and CMICxN inputs. Refer to the following table for the list of recommended microphone characteristics. Table 12.
Reference Guide Interfaces Figure 19. Equivalent Circuit of CSPK Table 14. Electrical Characteristics of CSPK for USR3500 Parameters Min Typ Max Unit 1.5 mV Biasing voltage CSPKxP and CSPKxN -1.5 Output swing voltage RL=16Ω: AT+VGR=-1600*; single-ended - 1.7 RL=32Ω: AT+VGR=-1600*; single-ended - 1.9 2.75 Vpp RL Load resistance 14.
Reference Guide 3.1.3. Interfaces USB Interface Aside from the serial interface, the Mini-B USB interface (USB slave) may also be used to directly communicate with the modem. Figure 20. Mini-B USB Connector Refer to the following table for the pin description of the mini-B USB connector. Table 16.
Reference Guide Interfaces Parameter I/O Min Input Low 0 Output High 0.36 Output Low 0 Typ 0.38 Max Unit 0.01 V 0.44 V 0.01 V The USB feature can be activated by using the AT+WMFM=0,1,3 AT command. Refer to the AT Commands Interface Guide at http://www.usr.com/support/3500 for more information regarding this AT command. 3.2. Back Interface Expansion Compartment SIM Interface LED Status Indicator GPS RF Interface Main RF Interface Secondary RF Interface Figure 21. 3.2.1.
Reference Guide 3.2.1.1. Interfaces SIM Socket Pin Description Refer to the following table for the pin description of the SIM socket. Table 18. SIM Socket Pin Description Pin # Signal I/O I/O Type 1 SIMVCC O 2V9 / 1V8 2 SIMRST O 2V9 / 1V8 O SIM RESET 3 SIMCLK O 2V9 / 1V8 O SIM Clock 7 SIMDATA I/O 2V9 / 1V8 Pull up* SIM DATA 8 SIMPRES I 1V8 Pull low** SIM Card Detect * SIM-IO pull up is about 10KΩ. ** SIMPRES pull low is about 100KΩ. 3.2.2.
Reference Guide Figure 23. Interfaces Secondary RF Connector for USR3500 The GPS RF interface is used for GPS antenna connection. It is an MMCX type connector and its nominal impedance is 50Ω. It also provides bias for active antenna. For more details, refer to section 3.2.2.3.6 Active GPS Antenna Bias. Figure 24. GPS RF Connector for USR3500 3.2.2.1. RF Performances RF performances are compliant with ETSI recommendation GSM 05.05.
Reference Guide Interfaces Parameters Typical Values Output power at PCL19 (EGSM & GSM850) 5dBm Output power at PCL15 (GSM1800 & PCS1900) 0dBm Output power Class 3 (3G all band) 23dBm 3.2.2.2. Antenna Specifications The main/secondary antenna must meet the requirements specified in the table below. The optimum operating frequency depends on the application. A dual-band or quadband antenna should operate in these frequency bands and have the following characteristics.
Reference Guide Interfaces The USR3500 GPS antenna must meet the requirements specified in the table below. Table 23. GPS Antenna Specifications for USR3500 Characteristic GPS L1 RX Frequency 1575.42 MHz RF Impedance 50Ω VSWR 1.5:1 Rx max LNA Bias Voltage 5V LNA Current Consumption 40mA MAX Polarization Linear, vertical Typical radiated gain 0dBi in one direction at least 3.2.2.3.
Reference Guide • Interfaces Best if downloaded once every 1–2 days, but valid for up to 7 days with some accuracy degradation Rev 1.
Reference Guide 3.2.2.3.3. • Interfaces A-GPS Features Leading A-GPS performance Exceeds 3GPP RAN 4 AGPS performance specification • • • • • • • -153 dBm cold start sensitivity -155 dBm tracking sensitivity < 5 second average cold start TTFF in open sky (UE-based) < 3 second average super hot TTFF in open sky < 2 m accuracy in open sky 1 Hz tracking with CEP-50 UMTS Control Plane (CP) – UE-assisted and UE-based GSM Control Plane (CP) – UE-assisted and UE-based 3.2.2.3.4. • • • Enhanced Navigation 2.
4. Signals and Indicators 4.1. Alarm Mode The USR3500 can be turned on using the Alarm mode when power supply is applied. The USR3500 will remain in Low Power mode until the alarm is triggered to start the USR3500 up. Note: Table 24. Refer to section 3.1.1.2 ON/OFF Pin for more information on how to turn the USR3500 ON or OFF using the ON/OFF pin. Alarm Mode (Low Power Mode) Steps State Power Supply Operation 1 AT+CALA=“YY/MM/DD,H H:MM” 4.75V to 32V supply is applied. The alarm is set.
Reference Guide Table 25. Signals and Indicators USR3500 Reset Status (Serial Port) Pin # Signal I/O I/O Type Voltage Description 14 Reset I/O Open drain 1V8 USR3500 Reset Table 26. Reset Electrical Characteristics for USR3500 Parameter Minimum Typical Maximum Unit Input Impedance (R)* 10 kΩ Input Impedance (C) 20 nF * Table 27.
Reference Guide 4.2.1. Signals and Indicators Reset Sequence To activate the Reset sequence, the Reset signal has to be set to LOW for a minimum of 200µs. As soon as the reset is done, the application can send the command AT8 and the AT interface will send an “OK” back to the application. If the application manages hardware flow control, the AT command may be sent during the initialization phase. Figure 25.
Reference Guide Signals and Indicators * The Flash LED can be disabled by the user when in Sleep mode in order to save power consumption. Refer to the AT Commands Interface Guide at http://www.usr.com/support/3500 for more information on how to disable the Flash LED using an AT command. 4.4. Real Time Clock (RTC) The USR3500 has implemented Real Time Clock for saving date and time when the USR3500 is unplugged from the DC power supply through the DC power cable. Table 29.
5. Expansion 5.1. Expansion Compartment The expansion compartment allows users to easily expand the USR3500’s features (Ethernet, for example) for their own applications. Figure 26. USR3500 expansion compartment Refer to the Ethernet Expansion Card User Guide at http://www.usr.com/support/3500 for more information regarding this feature. Rev 1.
6. Power Consumption The following sub-sections details out the power consumption values of the USR3500 for various modes and RF bands. These consumption values were obtained by performing measurements on USR3500 samples at a temperature of 25°C using a 3V SIM card. Note: For power consumption, the software version used is R7.50 A1. Refer to the Courier M2M Application guide at http://www.usr.com/support/3500 for details on how to upgrade modem firmware.
Reference Guide Power Consumption Operating Mode Description Low power consumption mode, the only feature which is available in this mode is the alarm wake up.
Reference Guide 6.3. Table 34. Power Consumption Connected Mode Power Consumption Power Consumption of USR3500 in Connected Mode with Serial Port OFF, Flash LED OFF and USB ON (typical values) I average Mode Parameters DC-IN =13.2V DC-IN =32V DC-IN =4.75V DC-IN =13.
Reference Guide Power Consumption I average Mode Parameters Band I Band II UMTS (Voice) Band V Band VI Band VIII Band I UMTS (Data Transfer 2) 384 kbit/s Band II Band V Band VI Band VIII Band I HSDPA Data Transfer 2 Cat.10 14.4 Mbit/s Band II Band V Band VI Band VIII Band I HSUPA Data Transfer 2 Cat.5 2 Mbit/s Band II Band V Band VI Band VIII I peak Unit DC-IN =4.75V DC-IN =13.2V DC-IN =32V DC-IN =4.75V DC-IN =13.
Reference Guide Power Consumption 6.4. Non-Connected Mode Power Consumption Note: The USB port must be deactivated to enter Sleep Mode. Rev 1.
Reference Guide Table 35. Power Consumption Power Consumption of USR3500 in Non-Connected Mode with UART ON, FLASH LED OFF and USB OFF (typical values) Mode Active Idle Mode, HSPA Sleep Idle Mode, HSPA Active Idle Mode, 2G page 9 Sleep Idle Mode, 2G page 9 Active Idle Mode, 2G page 2 Sleep Idle Mode, 2G page 2 Alarm Mode Serial Port Status I average Unit DC-IN=4.75V DC-IN=13.2V DC-IN=32V ON 45.82 16.56 7.6 mA OFF 15.48 5.96 2.81 mA ON 32.66 11.89 5.8 mA OFF 3.09 1.39 0.
7. Recommendations when Using the USR3500 on Trucks Caution: The power supply connection of the modem must never be directly connected to the truck battery. 7.1. Recommended Power Supply Connection on Trucks All trucks have a circuit breaker on the exterior of the cabin. The circuit breaker is used for safety reasons: if a fire blazes in the trucks, (for example, on the wiring trunk) the driver may cut the current source to avoid any damage (explosion).
Recommendations when Using the USR3500 on Trucks Reference Guide 7.2. Technical Constraints on Trucks It is highly recommended to directly connect the power supply on the circuit breaker rather than on the battery. The modem may be damaged when starting the truck if the circuit breaker is switched OFF (in this case, the truck ground and the battery ground will be connected through the modem as shown in the following figure). Figure 28.
8. Reliability Compliance and Recommended Standards 8.1. Reliability Compliance The USR3500 is compliant with the following requirements. Table 36. Standards Conformity for the modem Abbreviation Definition IEC International Electro technical Commission ISO International Organization for Standardization 8.2. Applicable Standards Listing The table hereafter gives the basic list of standards applicable to the USR3500. Note: Table 37. References to any features can be found from these standards.
Reliability Compliance and Recommended Standards Reference Guide Document Current Version Title IEC60068238 2.0 Environmental testing - part 2-38: Test Z/AD: composite temperature/humidity cyclic test. IEC60068240 1.0 w/A1 Basic environmental testing procedures - part 2: Test Z/AM combined cold/low air pressure tests. ISO167501 2ND Road vehicles - environmental conditions and testing for electrical and electronic equipment - part 1: general.
Reliability Compliance and Recommended Standards Reference Guide 8.3.1. Function Status Classification The classes reported below comply with the Annex “ISO Failure Mode Severity Classification”, ISO Standard 7637, and Section 1. Note: Table 39. Class The word “function” used here only concerns the function performed by the modem. ISO Failure Mode Severity Classification Definition All equipment/system functions are fulfilled normally (100% functional) during and after the constraint.
9. Certification Compliance and Recommended Standards 9.1. Certification Compliance Refer to the following tables for the requirements compliance of the USR3500. Table 40. Standards Conformity for USR3500 Domain Applicable Standard Safety & Health IEC 60950:2005+A1:2009 EN 60950:2006+A11:2009+A1:2010+A12:2011 EN 62311: 2008 Efficient use of the radio frequency spectrum EN 301 440-1, v1.6.1 EN 301 440-2 v1.4.1 EN 301 511, v9.0.2 EN 301 908-1, v4.2.1 EN 301 908-2, v5.2.1 EMC EN 301 489-1, v1.9.
Certification Compliance and Recommended Standards Reference Guide 9.2. Applicable Standards Listing The table hereafter gives the basic list of standards applicable for 2G and 3G (HSPA). Note: Table 41. References to any features can be found from these standards. Applicable Standards and Requirements for USR3500 Document Current Version Title GCF-CC 3.46.0 GSM Certification Forum-Certification Criteria NAPRD.03 5.
10. Safety Recommendations 10.1. General Safety For the efficient and safe operation of your programmable modem, please read the following information carefully. It is important to follow any special regulations regarding the use of radio equipment due in particular to the possibility of radio frequency (RF) interference. Carefully follow the safety advice given. Switch OFF your programmable modem: • • • • When in an aircraft.
Reference Guide Safety Recommendations There may be a hazard associated with the operation of your USR3500 close to inadequately protected personal medical devices such as hearing aids and pacemakers. Consult the manufacturers of the medical device to determine if it is adequately protected. Operation of your USR3500 close to other electronic equipment may also cause interference if the equipment is inadequately protected. Observe any warning signs and manufacturers’ recommendations.
Reference Guide Safety Recommendations 10.2. RF Safety 10.2.1. General Your GSM modem is based on the GSM standard for cellular technology. The GSM standard is spread all over the world. It covers Europe, Asia and some parts of America and Africa. This is the most used telecommunication standard. Your GSM modem is actually a low power radio transmitter and receiver. It sends out and receives radio frequency energy.
Reference Guide Safety Recommendations that the installation has been performed by qualified personnel. Verification of the protection of vehicle electronics should form part of the installation. The use of an alert device to operate a vehicle’s lights or horn on public roads is not permitted. 10.4. Care and Maintenance Your USR3500 is the product of advanced engineering, design and craftsmanship and should be treated with care. The suggestion below will help you to enjoy this product for many years.
11. Reference Documents For more details, several reference documents can be consulted. The documents referenced herein are provided by USRobotics. Visit the USRobotics website at http://www.usr.com/ for the latest documentation available. 11.1. Firmware Documentation [3] AT Commands Interface Guide [4] Customer Release Notes for Firmware 7.52 A1 11.2. Expansion Card Documentation [5] Ethernet Expansion Card User Guide Rev 1.
12.
Reference Guide List of Abbreviations Abbreviation Definition IEC International Electrotechnical Commission IES Internal Expansion Socket IESM Internal Expansion Socket Module IMEI International Mobile Equipment Identification I/O Input / Output LED Light Emitting Diode MAX MAXimum ME Mobile Equipment MIC MICrophone Micro-Fit Family of connectors from Molex MIN MINimum MNP Microcom Networking Protocol MO Mobile Originated MS Mobile Station MT Mobile Terminated NOM NOMinal
Reference Guide List of Abbreviations Abbreviation Definition TYP TYPical UMTS Universal Mobile Telecommunications System VSWR Voltage Standing Wave Ratio Rev 1.
Rev 1.
