BlackBerry R6420GN GPRS OEM Radio Modems 1902GS & 1902G User Manual integrator guide

BlackBerry Limited GPRS OEM Radio Modems 1902GS & 1902G integrator guide

Contents

modified integrators guide

RIM GPRS Radio Modem1902G, 1902GS, 1802G, 1802GSIntegrator GuideVersion 1.0
2RIM GPRS Radio Modem 1902G, 1902GS, 1802G, 1802GS Integrator GuideLast revised: 28 June 2002Part numbers: PDF-04522-002The information in this document is RIM confidential and is for internal distribution only.© 2002 Research In Motion Limited. All Rights Reserved. The BlackBerry and RIM families of relatedmarks, images and symbols are the exclusive properties of Research In Motion Limited. RIM, Research InMotion, ‘Always On, Always Connected’, the “envelope in motion” symbol and the BlackBerry logo areregistered with the U.S. Patent and Trademark Office and may be pending or registered in other countries.All other brands, product names, company names, trademarks and service marks are the properties oftheir respective owners.The handheld and/or associated software are protected by copyright, international treaties and variouspatents, including one or more of the following U.S. patents: 6,278,442; 6,271,605; 6,219,694; 6,075,470;6,073,318; D445,428; D433,460; D416,256. Other patents are registered or pending in various countriesaround the world. Visit www.rim.net/patents.shtml for a current listing of applicable patents.While every effort has been made to ensure technical accuracy, information in this document is subject tochange without notice and does not represent a commitment on the part of Research In Motion Limited, orany of its subsidiaries, affiliates, agents, licensors, or resellers. There are no warranties, express or implied,with respect to the content of this document.Research In Motion Limited295 Phillip StreetWaterloo, ON N2L 3W8CanadaResearch In Motion EuropeCentrum House, 36 Station RoadEgham, Surrey TW20 9LFUnited KingdomPublished in Canada
3NOTE: This document is provided for informational purposes only, and does not constitute a bindinglegal document unless specifically incorporated by reference into a binding legal agreement between youand Research In Motion (RIM). In the event that you enter into a binding legal agreement with RIM, allprovisions contained in such binding legal agreement shall apply, regardless of whether such provisionsconflict with information contained herein.RIM assumes no responsibility for any typographical, technical or other inaccuracies in this document.RIM reserves the right to periodically change information that is contained in this document; however,RIM makes no commitment to provide any such changes, updates, enhancements or other additions tothis document to you in a timely manner or at all.FOR INTERNAL USE ONLY. NOT FOR PUBLIC DISTRIBUTION.The information contained in this document is commercially confidential, for internal use only, and mustnot be disclosed to any third party without the express written consent of RIM. This document is to betreated as Confidential Information for the purposes of any Non-Disclosure Agreement between you andRIM.Warning: This document is for the use of licensed users only. Any unauthorized copying, distribution ordisclosure of information is a violation of copyright laws. No reproduction in whole or in part of thisdocument may be made without express written consent of RIM.THERE ARE NO WARRANTIES, EXPRESS OR IMPLIED, WITH RESPECT TO THE CONTENT OF THISDOCUMENT, AND ALL INFORMATION PROVIDED HEREIN IS PROVIDED "AS IS". IN NO EVENTSHALL RIM BE LIABLE TO ANY PARTY FOR ANY DIRECT, INDIRECT, SPECIAL ORCONSEQUENTIAL DAMAGES FOR ANY USE OF THIS DOCUMENT, INCLUDING WITHOUTLIMITATION, RELIANCE ON THE INFORMATION PRESENTED, LOST PROFITS OR BUSINESSINTERRUPTION, EVEN IF RIM WAS EXPRESSLY ADVISED OF THE POSSIBILITY OF SUCHDAMAGES.
4
Important Safety and compliance informationThis section provides information on the following topics:•FCC compliance statement (USA)•Industry Canada Certification
Important Safety and compliance information6RIM GPRS Radio ModemFCC compliance statement (USA)FCC Class B Part 15 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:•This device may not cause harmful interference, and•This device must accept any interference received, including interference that may cause undesired operation.This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer’s instructions, may cause interference harmful to radio communications.There is no guarantee, however, that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:•Reorient or relocate the receiving antenna.•Increase the separation between the equipment and receiver. •Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.•Consult the dealer or an experienced radio/TV technician for help.Industry Canada CertificationThis device complies with Industry Canada RSS 133, under certification number 2503A-R6020GN.Class B complianceThis device complies with the Class B limits for radio noise emissions as set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of Industry Canada.Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
ContentsImportant Safety and compliance information................................................................ 5FCC compliance statement (USA)...........................................................................6Industry Canada Certification .................................................................................6Class B compliance.............................................................................................6About this guide................................................................................................................11Related documentation...........................................................................................11CHAPTER 1 Introduction to the RIM GPRS Radio Modem.................................................................. 13About the RIM GPRS Radio Modem ....................................................................14Range of applications.......................................................................................15Receiver sensitivity...........................................................................................15Noise immunity ................................................................................................15Powerful and efficient transmitter.................................................................16Small size ...........................................................................................................16GPRS network technology......................................................................................16CHAPTER 2 Getting Started.................................................................................................................. 19About the Integrator Kit .........................................................................................20Working with RIM...................................................................................................20Integration overview...............................................................................................21CHAPTER 3 Setting up the test board ................................................................................................. 25Test board components...........................................................................................26Setting up the test board (GS models) ..................................................................27To connect the radio modem to the test board.............................................28To connect the test board to the computer ...................................................29To insert the SIM card into the SIM card holder..........................................29To connect the antenna to the radio modem................................................30
To connect the test board to an AC outlet.....................................................31To turn on the system ......................................................................................31To connect the headset.....................................................................................31Setting up the test board (G models) ....................................................................32To connect the SIM card to the test board.....................................................33To connect the radio modem to the test board.............................................34To connect the test board to the computer ...................................................35To insert the SIM card into the SIM card holder..........................................35To connect the antenna to the radio modem................................................36To connect the test board to an AC outlet.....................................................36To turn on the system ......................................................................................36To connect the headset.....................................................................................36CHAPTER 4 Integrating the radio modem .......................................................................................... 37Overview...................................................................................................................38Environmental properties.......................................................................................38Storage temperature ................................................................................................38Operating temperature ...........................................................................................38Physical properties ..................................................................................................38Weight ................................................................................................................38Dimensions........................................................................................................39Mounting methods ..................................................................................................39Bolts or standoffs ..............................................................................................40Tie wraps............................................................................................................40Permanent industrial adhesive.......................................................................41Cables and connectors.............................................................................................41Radio interface cable and connector..............................................................41SIM interface cable and connector .................................................................42Antenna cable and connectors........................................................................43CHAPTER 5 Power Requirements ........................................................................................................ 45Load specifications ..................................................................................................46Power supply parameters ...............................................................................46Ripple specification ..........................................................................................46Power requirements ................................................................................................47Batteries.....................................................................................................................47Rechargeable batteries .....................................................................................47
Single-use batteries...........................................................................................48Plug-in supplies .......................................................................................................48Automotive supplies...............................................................................................48CHAPTER 6 Interface specification ...................................................................................................... 51RIM GPRS Radio Modem interface.......................................................................52AT Commands .........................................................................................................52SIM interface pins ....................................................................................................53Radio Interface Pins.................................................................................................54Serial port...........................................................................................................54Pin descriptions ................................................................................................54Turning off and turning on the radio ...................................................................58Turning on the radio ........................................................................................58Turning off the radio........................................................................................58Resetting the Radio...........................................................................................59Loading firmware (optional)..................................................................................59CHAPTER 7 Antenna selection .............................................................................................................61Introduction to antenna terminology ...................................................................62Gain and ERP ....................................................................................................62Impedance matching, return loss, and VSWR .............................................62Antenna size......................................................................................................63Selecting an antenna................................................................................................63Antenna requirements ............................................................................................64Antenna design considerations .............................................................................64Vertical polarization.........................................................................................65Proximity to active electronics........................................................................65Transmit interference.......................................................................................65Device position .................................................................................................65Antenna cable....................................................................................................66Additional notes ...............................................................................................66Shielding ...................................................................................................................67CHAPTER 8 Certification....................................................................................................................... 69FCC radio frequency exposure rules ....................................................................70Complying with FCC SAR/MPE guidelines........................................................70Antenna..............................................................................................................70
SAR and MPE limits.........................................................................................71Guidelines..........................................................................................................71Operating manual compliance statement .....................................................71Labelling ............................................................................................................72For more information.......................................................................................72CHAPTER 9 Specifications .................................................................................................................... 73Power supply & typical current usage .................................................................74RF properties ............................................................................................................74Serial communications............................................................................................74Other features...........................................................................................................74Mechanical & environmental properties..............................................................75Audio.........................................................................................................................75Gain setting........................................................................................................76Frequency response (voiceband filter) ..........................................................76Input/output impedance .................................................................................76Signal to (noise + distortion) ...........................................................................76CHAPTER 10 Glossary ............................................................................................................................. 77Index .................................................................................................................................. 81
About this guideThis guide explains how to integrate the RIM GPRS Radio Modem into a variety of devices such as laptop computers, handhelds, vending machines, point-of-sale terminals, vehicle-based mobile terminals, and alarm systems.This guide includes the following topics:•integration overview•test board overview•mounting requirements•power (battery) requirements•interfacing to the RIM radio modem•antenna selection and placementThroughout the guide, there are suggestions and precautions that can ease the implementation of a wireless communication solution. To discuss the technical integration of this radio modem, contact RIM at oemsupport@rim.net.Related documentationThe Integrator Kit also includes the RIM GPRS Radio Modem AT Command Reference, which lists the AT commands that apply to the RIM GPRS Radio Modem.
About this guide12 RIM GPRS Radio Modem
Chapter 1Introduction to the RIM GPRS Radio ModemThis section provides information on the following topics:•About the RIM GPRS Radio Modem•GPRS network technology
Chapter 1: Introduction to the RIM GPRS Radio Modem14 RIM GPRS Radio ModemAbout the RIM GPRS Radio ModemWith the introduction of the RIM GPRS Radio Modem, Research In Motion® (RIM®) sets a new standard for radio modem performance. Its small size and weight makes it suitable for virtually any wireless data and voice application, including handheld devices and mobile terminals. Its multislot class allows for the highest possible download rates allowed using a single receiver on a GPRS network.The RIM GPRS Radio Modem consists of the following models:•1902G•1902GS•1802G•1802GSThe RIM GPRS Radio Modem offers the following advantages:•range of applications•radio performance•reciever sensitivity•noise immunity•powerful and efficient transmitter•small sizeModel Description1902G This model is designed for use with GPRS and GSM wide-area wireless data/voice networks operating in the 1900 and 850 MHz range in North America. It is identical to the 1902GS, but it has a 6-pin zif connection, which allows you to position the SIM card in the location that best suits your design.1902GS This model is designed for use with GPRS and GSM wide-area wireless data/voice networks operating in the 1900 and 850 MHz range in North America. It is identical to the 1902G, but it has an on-board SIM card.1802G This model is designed for use with GPRS and GSM wide-area wireless voice and data networks operating in the 900 MHz and 1800 MHz ranges. It is identical to the 1802GS, but it has a 6-pin zif connection, which allows you to position the SIM card in the location that best suits your design.1802GS This model is designed for use with GPRS and GSM wide-area wireless voice and data networks operating in the 900 MHz and 1800 MHz ranges. It is identical to the 1802G, but has an on-board SIM card.
About the RIM GPRS Radio ModemIntegrator Guide 15These advantages are described below.Range of applicationsRIM radio modems are designed to integrate easily into a computing device and are suitable for a wide range of applications, including:•laptop computers•vehicle tracking•point-of-sale devices•monitoring and telemetry•ruggedized terminals•vending machines•handheld computers•utility meters•parking meters•billboards•dispatching•security alarm panelsReceiver sensitivityReceiver sensitivity is a measure of how well the radio modem can receive and decode data from a network base station. This figure is important when a device is used in areas where signal strength is weak, such as inside buildings and in locations that are not close to a base station. A radio modem with good receiver sensitivity can be used in more places than a radio modem with poor receiver sensitivity.The RIM GPRS Radio Modem typically has a receiver sensitivity of -107 dBm with a 2.4% bit error rate (BER).Noise immunityThe RIM GPRS Radio Modem is not desensitized by the electromagnetic interference (EMI) or “noise” generated by the electronics of the terminal into which it is integrated. As a result, no special shielding is required between the radio and your device.Note: BER is an industry standard error rate used to define sensitivity; it does not indicate that 2.4% of the data that is passed by the radio to the application is corrupted.
Chapter 1: Introduction to the RIM GPRS Radio Modem16 RIM GPRS Radio ModemNoise immunity offers several key benefits:•easier integration•longer battery life•increased reliability•improved RF performance•more coverage from each base station•no need for special RF shieldingPowerful and efficient transmitterWhen necessary, the RIM GPRS Radio Modem can supply a full 1.0 watt at 1900 MHz. However, the RIM GPRS Radio Modem quickly decreases the output power when it is close to a base station, because a stronger signal is needed only when the radio modem is far from a base station. By transmitting a strong signal only when it is necessary, the RIM GPRS Radio Modem conserves battery power and ensures a balanced link.Preliminary results indicate that the RIM GPRS Radio Modem provides reliable transmit efficiency across the entire operating voltage range of 3.5 to 4.75 volts. As a result, batteries can be used even when nearing depletion. The transmit efficiency also maximizes the radio coverage area throughout the life of the battery. Final numbers are yet to be determined.Small sizeBecause of its single board design, the RIM GPRS Radio Modem is very thin and, at only 42.0 by 67.5 mm, is smaller than a business card. This tiny size allows the RIM GPRS Radio Modem to meet most applications’ tight space requirements. The radio modem’s single-board design is more reliable than multi-board designs, particularly in high-vibration environments (such as vehicles) or in devices that can be dropped (such as handheld devices).GPRS network technologyThe Global System for Mobile Communication (GSM), first deployed by Oy Radiolinja Ab of Finland in 1992, has become the international voice communication standard. The General Packet Radio Service (GPRS) supplement to the GSM network was first proposed in 1992 to combine telecom and datacom, and the result has been well-received. For more information on GSM and GPRS, visit http://www.gsm.org.
GPRS network technologyIntegrator Guide 17GPRS is a packet switched overlay to the circuit switched GSM network that gives a mobile device on that network “always on” capabilities. GPRS allows for a theoretical maximum transfer speed of 171.2 kbps. It is also IP-based, which means that a mobile device on the GPRS network is Internet-aware.GPRS networks are deployed worldwide. There are currently 172 countries with deployed GSM networks. Enabling GPRS communication on GSM networks requires only two additional hardware devices and a software upgrade. Many GSM network providers have already supplemented their networks with GPRS capability. GPRS technology is deployed or is being deployed in the following countries:Australia Germany Luxembourg SingaporeAustria Greece Malaysia SloveniaBelgium Hong Kong Malta South AfricaCanada Hungary Netherlands SpainChina Iceland New Zealand SwedenCroatia Ireland Norway SwitzerlandCzech RepublicIsrael Philippines TaiwanDenmark Italy Poland TurkeyEstonia Lebanon Portugal United Arab EmiratesFinland Liechtenstein Romania United KingdomFrench W. IndiesLithuania Russia United StatesNote: The RIM 1902G and 1902GS models are compatible with networks in North America that operate in the 1900 and 850 MHz range.The RIM 1802G and 1802GS models are compatible with networks, usually in Europe, that operate in the 900 and 1800 MHz range.
Chapter 1: Introduction to the RIM GPRS Radio Modem18 RIM GPRS Radio Modem
Chapter 2Getting StartedThis section provides information on the following topics:•about the Integrator Kit•working with RIM•integration overview
Chapter 2: Getting Started20 RIM GPRS Radio ModemAbout the Integrator KitRIM is committed to facilitating RIM GPRS Radio Modem integration. RIM provides resources for you to evaluate the feasibility of implementing a wireless communication solution and works closely with partners to develop an application in the shortest time possible.The Integrator Kit includes several tools to help streamline the evaluation and integration process. Using the kit, you can quickly interface the radio modem to your computing device.Working with RIMRIM has an experienced team to help you with design and implementation. If you need help getting started, or if you have any questions about the radio technology or its integration into your platform, contact the engineering development team:phone: +1 (519) 888-7465 ext. 5200fax: +1 (519) 883-4940email: oemsupport@rim.netweb site: http://www.rim.net/oemNote: The radio modem that is part of the Integrator Kit is not activated on the GPRS network until a SIM card, which has been activated for GPRS communication, is attached to the device through the proper lines. Contact your GPRS network provider to obtain a SIM card and activate the radio modem.
Integration overviewIntegrator Guide 21Integration overviewThe following flowchart illustrates the integration process.
Chapter 2: Getting Started22 RIM GPRS Radio ModemStep DescriptionContact the RIM OEM team Email OEMinquiry@rim.net or call (519) 888-7465 x5200 to obtain more information about RIM Radio Modem products and whether they are suitable for your application.Obtain Integrator Kit Request the Integrator Kit from Research In Motion. This kit includes the radio modem, two mechanical samples of the radio, an interface and test board, AC to DC power supply, required cables, magnetic mount antenna, and documentation.Read the Integrator Guide Read the Integrator Guide first to make sure that you follow proper procedures to prevent unnecessary delays and equipment damage. This guide explains topics such as mounting requirements, battery power characteristics, interfaces to the RIM radio modem, and antenna selection and placement.Obtain SIM Contact the appropriate network provider to obtain a SIM card. For network contact information, visit http://www.rim.net/oem or contact RIM at oemsupport@rim.net.Activate GPRS account Contact the appropriate network provider to activate the GPRS account. For network contact information, visit http://www.rim.net/oem or contact RIM at oemsupport@rim.net.Contact Certification Labs Learn about obtaining FCC and/or Industry Canada certification. Radio frequency (RF) emitting products cannot be sold in the United States or Canada until you have the necessary government approvals. Understanding what you are permitted to do before beginning your design will help you to avoid redesign costs. For more information on testing, visit http://www.rim.net/oem/ or contact the RIM at oemsupport@rim.net.Start Development Plan your project carefully before starting development. You must address several important considerations when planning your design. To speed up the development process, you can often perform several procedures in-parallel. Contact RIM at oemsupport@rim.net for further details.
Integration overviewIntegrator Guide 23Develop Software Contact RIM if you encounter any problems with the communication between the offboard processor and the radio.Develop an Antenna Start developing an antenna. The antenna that is provided with the Integrator Kit has been certified for use with the RIM GPRS Radio Modem. If this antenna does not meet your needs, develop an antenna for use with the final product. Refer to the Integrator Guide for guidelines selecting an antenna.You can also contact RIM for general assistance and for recommendations of antenna companies that can provide further assistance.Develop a Power Supply Start developing the power supply for the product. Refer to the Integrator Guide for guidelines on the strict power requirements of the RIM radio modem. Contact RIM at oemsupport@rim.net for further details on power requirements, guidelines for power supply development, and recommendations of power supply companies that can provide further assistance.Complete PCB and Remaining DevelopmentStart developing the housing and Printed Circuit Board (PCB) for the product. Refer to the Integrator Guide for guidelines on radio and antenna placement.Conduct Field Trials Start product field trials to ensure performance and reliability.Perform Certification Choose a testing lab to perform FCC or Industry Canada certification and any applicable network certification. Before sending your product for testing, contact RIM to make sure that the solution is set up properly for testing. For more information, visit http://www.rim.net/oem/.Pilot/Beta Release Contact RIM prior to beta release of the product, especially if the product has not been certified yet. There are specific guidelines that must be followed prior to certification to make sure that the release conforms to legal requirements.Final Release Congratulations on completing the development process! Contact RIM if you encounter any obstacles related to the RIM GPRS Radio Modem. Please also provide RIM with regular updates on the release’s progress. Step Description
Chapter 2: Getting Started24 RIM GPRS Radio Modem
Chapter 3Setting up the test boardThis section provides information on the following topics:•Test board components•Setting up the test board (GS models)•Setting up the test board (G models)
Chapter 3: Setting up the test board26 RIM GPRS Radio ModemTest board componentsThe RIM test board provides a standard RS-232 serial interface between a computer and the radio modem. The test board allows you to connect the RIM GPRS Radio Modem to a standard computer using a COM port or to a terminal device using a RS-232 serial port. The test board also provides access points to the radio’s communication port, which enables you to monitor activity with a logic probe, multimeter, or oscilloscope.The test board includes the following components and functionality:•RS-232 interface•on/off switch•test points•power supply•LED indicators•standard SIM slot•microphone/speaker jackThe test board components and functionality are described below.Component DescriptionRS-232 interface The serial (COM) port on a computer and most terminal devices operates at RS-232 signal levels, which are typically ±12V. This high voltage would damage the RIM GPRS Radio Modem, which is typically integrated into a device that operates an asynchronous serial port at 3.0V. The RS-232 interface on the test board allows you to produce an output from the radio that is easily interpreted by a computer.On/off switch When the switch is on, the radio turns on whenever power is applied to the test board. When the switch is off, the radio shuts down. Refer to "Turning off and turning on the radio" on page 58 for more information.Test points The test board is more than an RS-232 interface. It provides direct access to each of the 22 pins on the radio interface cable, which enables connectivity to analytical equipment—such as a logic probe, multimeter, or oscilloscope—and real-time data flow indication.
Setting up the test board (GS models)Integrator Guide 27Setting up the test board (GS models)To use the test board that is provided with your Integrator Kit, you must connect the RIM GPRS Radio Modem to an antenna, SIM card, and a computer (or another device with a RS-232 serial interface). Use the test board and cables that are supplied with your Integrator Kit. To set up the test board, complete these tasks in the following order:1. Connect the radio modem to the test board.2. Connect the test board to the computer.3. Insert the SIM card into the SIM card holder.4. Connect the antenna to the radio modem.5. Connect the test board to an AC outlet.6. Turn on the system.7. Connect the headset.The following graphic illustrates the GS model test board and major components.Power supply The RIM GPRS Radio Modem requires a clean, high-current power source. RIM uses a standard plug-pack to provide the current that is necessary to operate the radio. The voltage is converted into the necessary levels by the power supply section on the test board.LED indicators The test board includes light emitting diode (LED) indicators that are designed to indicate the flow of data to and from the host (in real time), the radio power status, power to the test board, network coverage, and more.Standard SIM card holder The test board includes a SIM card holder for use with standard 3V or 5V SIM cards. The SIM card is necessary in order to access GSM/GPRS networks.Microphone/speaker jack The test board includes a microphone/speaker jack for use with the headset that is included in the Integrator Kit. The microphone/speaker jack enables the integrator to take advantage of the GSM circuit-switched voice network that underlies the GPRS networks.Component DescriptionNote: These steps apply to on-board SIM models (GS) only.
Chapter 3: Setting up the test board28 RIM GPRS Radio ModemGS model test board — top viewTo connect the radio modem to the test boardThe 22-pin flat interface cable supplies clean, regulated power to the radio and carries most of the data and all of the voice between the test board and the radio modem. This cable also carries control and status signals, such as ONI.1. At the top of the radio modem, push the two black tabs up and away from the connector.microphone/on/off switchtest pointLEDpower jackRS-23222-pinGPRSspeaker jackinterfaceindicatorconnectorRadio ModemcableNote: This step is only necessary if the radio modem is not already connected to the test board.
Setting up the test board (GS models)Integrator Guide 29Connecting the 22-pin cable to the radio modem2. With the blue side facing the test board, insert the end of the 22-pin cable into the connector. Verify that the side with the bare pins is in direct contact with the pin side of the connector.3. At the top of the radio modem, push the black tabs down toward the connector to secure the cable.4. Repeat steps 1 through 3 for the 22-pin connector on the test board.To connect the test board to the computerUse the straight-through DB-9 serial cable to connect the test board to the computer.Connect the male end of the cable to the test board. Connect the female end of the cable to an available COM port on the computer.To insert the SIM card into the SIM card holder1. Turn the test board over to reveal the cut-out that provides access to the SIM card holder on the underside of the radio modem.Note: Do not force the cable into the connector.Warning: To prevent damage to your SIM card, do not scratch or bend the card or expose it to static electricity or wet conditions.Note: You must have a SIM card that is authorized for use by the appropriate GPRS network provider. The authorization must also allow access to the Access Point Name (APN) that will be targeted.
Chapter 3: Setting up the test board30 RIM GPRS Radio ModemUnderside of the test board showing the on-board SIM card holder2. Slide the SIM card holder in the direction of the arrow to unlock it, and then lift the cover open.3. Slide the SIM card into the cover with the conductive side facing the leads on the board. The notched end of the SIM card should align with the notch in the SIM card holder.4. Close the cover, and then slide the cover in the reverse direction of the arrow to lock it into place.To connect the antenna to the radio modemThe Integrator Kit includes a high-performance, 3 dB-gain magmount antenna, which is terminated by a screw-on SMA plug. The radio modem includes a snap-on MMCX jack.Note: If you connect the antenna before you connect the test board to an AC outlet, the unit detects network coverage more reliably.
Setting up the test board (GS models)Integrator Guide 311. Insert the antenna into the base and turn the antenna until the two components are securely fastened.2. Insert the SMA cable connector into the MMCX connector and turn the SMA connector until the two components are securely fastened.SMA cable connector and MMCX connector3. Insert the MMCX connector into the radio modem’s MMCX jack.4. Position the antenna for optimal coverage. The magmount antenna provides optimum RF performance when it is placed on a broad metal surface, such as the roof of a car. If you are using the antenna inside a building, for improved performance, place it near a window, with few obstacles (such as a wall, furniture, or equipment) between the antenna and the window.To connect the test board to an AC outletPlug the 5VDC, 2.4A, center-pin-positive power adapter into a wall outlet. Connect the other end to the test board’s power jack.To turn on the systemSwitch the power switch to the TURNON position to allow the radio modem to power up.When the radio is on, the LED marked ONI is lit. Refer to "Turning off and turning on the radio" on page 58 for more information.To connect the headsetInsert the headset plug into the audio jack.
Chapter 3: Setting up the test board32 RIM GPRS Radio ModemSetting up the test board (G models)To use the test board that is provided with your Integrator Kit, you must connect the RIM GPRS Radio Modem to an antenna, SIM card, and computer (or another device with a RS-232 serial interface). Use the test board and cables that are supplied with your Integrator Kit. To set up the test board, complete these tasks in the following order:1. Connect the SIM card to the test board.2. Connect the radio modem to the test board.3. Connect the test board to the computer.4. Insert the SIM card into the SIM card holder.5. Connect the antenna to the radio modem.6. Connect the test board to an AC outlet.7. Turn on the system.8. Connect the headset.The following graphic illustrates the G model test board and major components.Note: These steps apply to off-board SIM models (G) only.
Setting up the test board (G models)Integrator Guide 33G model test board — top viewTo connect the SIM card to the test boardThe 6-pin flat SIM interface cable carries the data and power between the test board SIM slot and the radio modem.1. Remove the radio modem from the test board: unfasten the nuts and lift the radio modem up and away from the test board.2. On the underside of the modem, on the connector, push the two black tabs up from the connector to widen the opening.microphone/on/off switchtest pointLEDpower jackRS-23222-pinGPRSspeaker jackinterfaceindicatorconnectorRadio Modemcable6-pinSIM cardconnector holderNote: This task only applies to the 1802G and 1902G models.
Chapter 3: Setting up the test board34 RIM GPRS Radio ModemUnderside of radio modem showing the 6-pin connector3. With the blue side facing the test board, insert the end of the cable 6-pin cable into the connector. Verify that the side with the bare pins is in direct contact with the pin side of the connector.4. Push the black tabs down toward the connector to secure the cable.5. Repeat steps 2 through 4 to connect the 6-pin connector to the test board.6. Re-attach the radio modem to the test board.To connect the radio modem to the test boardThe 22-pin flat interface cable supplies clean, regulated power to the radio and carries most of the data and all of the voice between the test board and the radio modem. This cable also carries control and status signals, such as ONI.1. At the top of the radio modem, push the two black tabs up and away from the connector.Note: Do not force the cable into the connector.Note: This step is only necessary if the radio modem is not already connected to the test board.
Setting up the test board (G models)Integrator Guide 35Connecting the 22-pin cable to the radio modem2. With the blue side facing the test board, insert the end of the 22-pin cable into the connector. Verify that the side with the bare pins is in direct contact with the pin side of the connector.3. At the top of the radio modem, push the black tabs down toward the connector to secure the cable.4. Repeat steps 1 through 3 for the 22-pin connector on the test board.To connect the test board to the computerUse the straight-through DB-9 serial cable to connect the test board to the computer.Connect the male end of the cable to the test board. Connect the female end of the cable to the computer’s COM port.To insert the SIM card into the SIM card holder1. Slide the SIM card holder in the direction of the arrow to unlock it, and then lift the cover open.2. Slide the SIM card into the cover with the conductive side facing the leads on the board. The notched end of the SIM card should align with the notch in the SIM card holder.3. Close the cover, and then slide the cover in the reverse direction of the arrow to lock it into place.Note: Do not force the cable into the connector.Warning: To prevent damage to your SIM card, do not scratch or bend the card or expose it to static electricity or wet conditions.Note: You must have a SIM card that is authorized for use by the appropriate GPRS network provider. The authorization must also allow access to the Access Point Name (APN) that will be targeted.
Chapter 3: Setting up the test board36 RIM GPRS Radio ModemTo connect the antenna to the radio modemThe Integrator Kit includes a high-performance, 3 dB-gain magmount antenna, which is terminated by a screw-on SMA plug. The radio modem includes a snap-on MMCX jack.1. Insert the antenna into the base and turn the antenna until the two components are securely fastened.2. Insert the SMA cable connector into the MMCX connector and turn the SMA connector until the two components are securely fastened.SMA cable connector and MMCX connector3. Insert the MMCX connector into the radio modem’s MMCX jack.4. Position the antenna for optimal coverage. The magmount antenna provides optimum RF performance when it is placed on a broad metal surface, such as the roof of a car. If you are using the antenna inside a building, for improved performance, place it near a window, with few obstacles (such as a wall, furniture, or equipment) between the antenna and the window.To connect the test board to an AC outletPlug the 5VDC, 2.4A, center-pin-positive power adapter into a wall outlet. Connect the other end to the test board’s power jack.To turn on the systemSwitch the power switch to the TURNON position to allow the radio modem to power up.When the radio is on, the LED marked ONI is lit. Refer to "Turning off and turning on the radio" on page 58 for more information.To connect the headsetInsert the headset plug into the audio jack.Note: If you connect the antenna before you connect the test board to an AC outlet, the unit detects network coverage more reliably.
Chapter 4Integrating the radio modemThis section provides information on the following topics:•Overview•Environmental properties•Storage temperature•Operating temperature•Physical properties•Mounting methods•Cables and connectors
Chapter 4: Integrating the radio modem38 RIM GPRS Radio ModemOverviewThis section provides you with information on issues that you should consider when you are developing your application’s hardware. You can use this information and the additional components provided with the Integrator Kit as a resource as you develop your application’s hardware.The Integrator Kit includes several components that can help you develop your product’s housing and physically integrate the radio modem and associated hardware into your your application. These components consist of two 22-pin connector cables, two 6-pin connector cables (G models only), and two radio modem mechanical samples.Environmental propertiesEnvironmental testing ensures that RIM products can withstand both typical and extreme real-world conditions.During environmental testing, RIM takes samples of its radio modems and subjects them to a variety of harsh conditions. Each unit in the sample is also visually inspected after testing. This experience enables RIM to fine-tune its design and manufacturing process.Storage temperatureThe RIM GPRS Radio Modem can be stored at a temperature from -40°C to 85°C (-40°F to 185°F).Operating temperatureThe RIM GPRS Radio Modem operates between -30°C to 75°C (-22°F to 158°F). Physical propertiesWeightThe RIM GPRS Radio Modem weighs 36 g (1.2 oz), including the case.Warning: You should warn end users not to exceed the upper temperature limit; doing so can result in performance degradation or damage to the power amplifier, especially during transmission.
Mounting methodsIntegrator Guide 39DimensionsRIM radio modems meet stringent space requirements. The maximum dimensions of the radio modem, not including cables, are:Width 42.0 mm (1.65 inches)Length 67.5 mm (2.66 inches)Thickness 8.4 mm (0.33 inches)Mounting methodsRIM GPRS Radio Modems can be securely fastened using a variety of methods; however, you must consider the operating environment when you choose a mounting option. For example, extreme temperature, heavy vibration, or areas with high electromagnetic interference can require a special mounting solution. You must make sure that the radio modem remains securely attached in the environment where it is used.This section describes the following mounting methods:•bolts or standoffs•tie wraps•permanent industrial adhesive
Chapter 4: Integrating the radio modem40 RIM GPRS Radio ModemThe following information is presented as a guide; however, applications can vary considerably. A mechanical engineer can help you make sure that the mounting method that you choose is suitable for your application.Bolts or standoffsThe radio modem includes a hole in each corner, which can be used to bolt the device onto a circuit board, device housing, standoffs, or other surface. The mounting hole pattern is four holes in a 62.5-by-36.5 mm rectangle, with each hole 2.5 mm in diameter.To allow room under the radio for components on your board, you can use standoffs instead of bolts, as illustrated in the following diagram.Tie wrapsYou can also use tie wraps as a secure but non-permanent means of attaching the radio modem to a surface. Typically, each tie wrap passes through a hole drilled into the board’s surface on either side of the radio modem. This enables the radio to be attached to a shell, a PCB, or other mounting surfaces.
Cables and connectorsIntegrator Guide 41Permanent industrial adhesiveThe RIM GPRS Radio Modem is small and lightweight enough to be attached to the host device using an industrial adhesive. For some applications, this mounting method is preferable to bolts, because adhesive is easier to use in a manufacturing environment and is more resistant to loosening than bolts. In many cases, an effective solution is to adhere the radio modem to the inside surface of your product’s casing.Choose an adhesive based on its ability to stick to the material used in the radio modem’s outer casing and the surface to which the radio modem will be mounted. The RIM GPRS Radio Modem’s bottom casing is magnesium.Cables and connectorsThe radio modem includes the following connectors:•radio interface connector•SIM interface connector (G models only)•antenna connector Radio interface cable and connectorThe radio interface connector connects the radio modem to a serial computing device, speaker and microphone, and power supply. Serial communication data, control signals, and power are carried on a flat 22-conductor 0.30 mm (0.012 inches) thick flexible printed circuit (FPC) cable. This cable has 1-mm centerline spacing that can plug into a matching connector. Because each application is unique, you may need to create a custom Flat Flex Cable (FFC) Jumper that has the correct length and correct connector orientation for your application. Please refer to the diagram in the next section for FPC specifications.Warning: If you use tie wraps, make sure that the surface beneath the radio modem is flat. Otherwise, the mounting surface can push up on the bottom surface of the radio case, and the tie wraps, when tightened, can push down on the edge of the radio case. This pressure can cause the radio modem’s metal case to flex upward and short components inside the radio. To avoid this malfunction, you should not use thick adhesive foam tape and tie wraps together.Note: You should choose foam tape for rough surfaces and adhesive tape for smooth surfaces.
Chapter 4: Integrating the radio modem42 RIM GPRS Radio ModemSIM interface cable and connectorThe SIM interface cable and connector connects a SIM card to the radio modem. All SIM communication data and power are carried on a flat 6-conductor 0.30 mm (0.012") thick flexible printed circuit (FPC) cable. This cable has 1.00 mm centerline spacing that can plug into a matching connector. Because each application is unique, you may need to create a custom Flat Flex Cable Jumper that has the correct length and connector orientation for your application. Please refer to the diagram below for FPC specifications.FPC interface cable specificationsNote: The interface cable supplied with the Integrator Kit is a Type D 76.2 mm (3.0 inches) long FFC Jumper with 1 mm centerline spacing, Molex part number 210390382.This cable can plug into a matching 22-position 1.0 [0.039] horizontal FPC connector. AMP/Tyco Electronics manufactures a variety of connectors. For information about each connector, including mechanical drawings, visit the manufacturer’s web site (www.amp.com), or contact RIM (oemsupport@rim.net) for help selecting an appropriate connector for your application.Note: The SIM interface cable and connector are only required for the 1902G and 1802G models.
Cables and connectorsIntegrator Guide 43Antenna cable and connectorsThe antenna cable and connector connects the antenna to the radio modem. RIM uses the industry-standard MMCX connector for the RIM GPRS Radio Modem. The MMCX connector is very small, and it has the mating force to withstand heavy vibration.Typically, an antenna does not plug directly into a RIM GPRS Radio Modem. Instead, a cable is used between the radio’s antenna connector and a second connector at the device’s outer casing. This allows the antenna to be removed from the system without opening the device, and it eliminates a source of strain on the radio’s MMCX connector.The antenna cable that you use should have low loss, an impedance of 50 Ω, and an MMCX plug that mates with the RIM GPRS Radio Modem’s MMCX jack. The other end of the cable can be any connector with an impedance of 50 Ω. An SMA screw-on connector is suitable and widely available. TNC connectors are also suitable, but they are larger than SMA connectors.The following cable is included with the Integrator Kit:Note: The 6-pin interface cable supplied with the Integrator Kit is a 76.2 mm (3.0") long Flat Flex Cable (FFC) Jumper with 1.00 mm centerline spacing and same side conductive surfaces, Parlex part number 100-6-76-B.This cable can plug into a matching 6-position 1.0 [0.039] horizontal FPC connector. A variety of connectors are manufactured by AMP/Tyco Electronics, including AMP part number 487951-6. For information about each connector, including mechanical drawings, visit the manufacturer's web site (www.amp.com), or contact RIM (oemsupport@rim.net) for help with selecting an appropriate connector for your application.Note: The antenna cable supplied with the Integrator Kit has an MMCX connector on one end and an SMA connector on the other. The cable is built with strain reliefs to prevent damage.
Chapter 4: Integrating the radio modem44 RIM GPRS Radio ModemIntegrator Kit antenna cableHuber & Suhner provides antenna cables and connectors. The parts described below have an impedance of 50 Ω and are suitable for use with the RIM GPRS Radio Modem.Contact:Part number Cable or connector11MMCX-50-2-1C/111 Straight MMCX connector16MMCX-50-2-1C/111 Right-angle MMCX connector25SMA-50-2-25/111 SMA connectorEZ Flex 405 Low-loss matching (50 W) cable133REEZ4-12-S2/1216 8” cable, straight MMCX to SMA133REEZ4-12-S2/1699 8” cable, right-angle MMCX to SMAHuber & SuhnerEssex Junction, VT, USAphone: (802) 878-0555fax: (802) 878-9880web site: www.hubersuhnerinc.comHuber & SuhnerKanata ON, Canadaphone: (800) 627-2212fax: (613) 596-3001
Chapter 5Power RequirementsThis section provides information on the following topics:•Load specifications•Power requirements•Batteries•Plug-in supplies•Automotive supplies
Chapter 5: Power Requirements46 RIM GPRS Radio ModemLoad specificationsThe RIM GPRS Radio Modem draws its power in bursts; the power required changes rapidly depending on whether the radio is transmitting, receiving, or idle.Power supply parametersThe RIM RIM GPRS Radio Modem requires a clean, stable 3.5 to 4.75 volt source that is capable of delivering a one-second burst of up to 2 A when it is required by the transmitter. RIM recommends that you design a more robust power supply that can provide adequate power under such non-ideal conditions as an improperly matched antenna, under which this burst could be as high as 2.2 A.If you want your RIM GPRS hardware integration to be fully compatible with the RIM 902M and RIM 802D radio modems, make sure that the power input to the radio modem is above 4.1 Volts. Please contact the RIM OEM Engineering Development team for further details on backwards compatibility.Ripple specificationFor best performance, RIM recommends ripple of less than 15 mV peak-to-peak (measured at the radio end of the connector) across the frequency range 60 Hz to 1 MHz. The maximum ripple at the connector that can be tolerated is 20 mV peak-to-peak.Except in special cases where there are several sources of ripple, you should measure the ripple with an oscilloscope set to 1-MHz bandwidth; the peak-to-peak value is not to exceed 15 mV. You can place a passive LC (series L, shunt C) power filter between your power supply and the RIM radio modem to reduce ripple at the radio connector. The radio modem already has approximately 70 µF of on-board shunt capacity. The inductor cannot exceed 100 µH (otherwise, transients could reset the radio), it must be rated to pass the maximum DC current of 2.2 A supply current at all temperatures, and its resistance must be low enough to guarantee minimum voltage of 3.5 V to the radio modem at 2.2 A.Note: If there are several ripple components, or if ripple is measured with a larger (typically 20-MHz) bandwidth, the ripple appears to be worse than it is. If the ripple is still below 15 mV under these conditions, it meets the ripple specification.
Power requirementsIntegrator Guide 47Power requirementsThe RIM GPRS Radio Modem requires a clean power source that is capable of delivering bursts of high current. You can provide this power source through the following sources:•a rechargeable battery pack or single-use batteries•a plug-in power supply unit •an automotive supplyThese sources are discussed below.BatteriesIf the RIM GPRS Radio Modem is integrated into a handheld device, it can be powered by batteries. This technology is easily available, and it eliminates the need for power supply components, such as voltage regulators.Rechargeable batteriesNickel cadmiumFor battery-operated applications that require a wide operating temperature range, RIM recommends using rechargeable nickel cadmium (NiCad) batteries to power the RIM GPRS Radio Modem. You can also successfully use nickel metal hydride (NiMH) and lithium ion (Li+) cells. However, many of these cells work poorly at temperatures below freezing. Batteries specifications should be obtained from the manufacturer.The cells that you use must be able to meet the radio modem load specifications (refer to page 46); they must be able to provide 2.0 A (at 4.2 V) for transmission. Rechargeable cells vary considerably; even if two cells have the same published capacity, one might be less efficient than another when the radio transmitter is turned on. This is because some batteries have a higher equivalent series resistance (ESR) at high current drain. The ESR should be low enough that the battery can supply the transmission current required without a large voltage drop.AlkalineYou can also use rechargeable alkaline batteries. These cells are typically rated for about 25 discharge cycles, far fewer than NiCads, but they provide longer life than NiCads. For the first five to ten cycles, you will receive about 70 to 80 percent of the battery life that you would expect from a single-use alkaline cell. After 25 discharges, this number may drop to 50 percent.
Chapter 5: Power Requirements48 RIM GPRS Radio ModemSingle-use batteriesOf the single-use cells, only alkaline and lithium cells provide the high current necessary for transmission. However, AA alkaline cells are likely the best choice. They are inexpensive, widely available, and provide an excellent power source. Alkaline cells typically run for approximately four times longer than similar-size NiCad cells and for approximately three times longer than similar-size NiMH cells. Plug-in suppliesA plug-in supply converts normal AC power (usually 110 V or 220 V) into a steady DC source that can be used instead of batteries. You must design your plug-in supply to make sure that voltage spikes, lightning, and other power fluctuations cannot damage the radio modem. To keep the inputs within the limits given in the radio modem load specifications (refer to page 46), you can add transient voltage protection zener diodes or other spike arrestor circuits. These should have a value of 20 V and be placed on the supply side of the regulator circuit.Preliminary indications suggest a supply capable of providing at least 3.5 V and rated for 2.2 A peak current is recommended. Final numbers are yet to be determined.Automotive suppliesIf you plan to power the RIM GPRS Radio Modem from an automotive supply, you must take steps to protect the radio modem from the intense power fluctuations that occur when an automobile starts. You should use a circuit that consists of inductors, transorbs and voltage regulators to make sure that the radio modem is protected from these power fluctuations.Warning: You must take precautions with alkaline rechargeable batteries. These cells are not intended to be used to their full capacity, so their actual useful runtime is closer to 30 to 40 percent of a single-use alkaline cell, and they require the user to pay closer attention to the battery state. If you fully discharge a rechargeable alkaline battery, you may only get five recharges before the capacity decreases to the point where it can no longer be used.Warning: RIM strongly discourages the use of general-purpose carbon-based batteries; this type of battery cannot supply the power required by the transmitter. These cells are more suited to flashlights and other products that do not have a load characteristized by bursts. If a carbon-based battery is used, the voltage drops below the minimum power required under load almost immediately following a radio transmission, which resets the radio each time it tries to transmit.You should recommend that users of your product use single-use batteries that are clearly identified as alkaline.
Automotive suppliesIntegrator Guide 49Commonly, in automotive applications, voltages may be as high as 70 V on the battery, especially on startup. Commercial automotive adapters are available that safely convert the 12 V automotive supply to a regulated supply suitable for operating the RIM GPRS Radio Modem.
Chapter 5: Power Requirements50 RIM GPRS Radio Modem
Chapter 6Interface specificationThis section provides information on the following topics:•RIM GPRS Radio Modem interface•AT Commands•SIM Interface Pins•Radio Interface Pins•Turning off and turning on the radio•Loading firmware (optional)
Chapter 6: Interface specification52 RIM GPRS Radio ModemRIM GPRS Radio Modem interfaceThe asynchronous serial interface on the RIM GPRS Radio Modem operates at 3.0V, which means that it is compatible with many existing system designs.The radio modem can be controlled by a wide variety of microcontrollers and microprocessors, such as the Intel 8051 or 80386, or Motorola 68000. In most cases, the RIM GPRS Radio Modem can be connected directly to a micro-controller, or through a Universal Asynchronous Receiver/Transmitter (UART) to a microprocessor data bus. If the radio modem will be connected directly to a PC or other RS-232 device, an interface must be provided to convert the signal voltage to the higher values required by an RS-232 device.The RIM GPRS Radio Modem is compliant with GSM Phase 2/2+ specifications. For detailed information on the AT command structure, please refer to the RIM GPRS Radio Modem AT Command Reference Guide included in the Integrator Kit.AT CommandsCommand DescriptionV.25ter The V.25ter commands correspond to the basic commands of AT Hayes-compatible modems applicable for GSM 07.07. These commands include answering incoming calls, switching modes, and redialling.GSM 07.07 The GSM 07.07 commands are used to remotely control GSM functionality, including phone book functionality. These commands include selecting bearer service types, entering PINs, and changing passwords.GSM 07.05 for SMS The GSM 07.05 commands are used to perform short message service (SMS) and CBS related operations for both Text and PDU modes. These commands include deleting, transmitting, and saving SMS messages.GSM 07.07 for GPRS The GSM 07.07 for GPRS AT commands are required for all GPRS functionality, including PDP context definitions and activations quality of service (QoS) definitions and requests GPRS attaches and detaches, PDP address retrieval GPRS Mobile Station class retrieval event reporting, network registration status retrieval, and SMS.
SIM interface pinsIntegrator Guide 53SIM interface pinsThis section describes the purpose of each of the 6 lines that comprise the SIM interface to the 1902G and 1802G radio modems. All SIM Interface lines are 3.0 volt logic. The 1902G and 1802G radio modems' software polls the SIM card to confirm its presence. The following diagram shows an example of how the SIM was incorporated onto the RIM Integrated Test Board:Note: The SIM interface Pins only apply to models with off-board SIM cards.Note: For proper operation, the SIM connector cable should be no more than 10cm long.The VPP line on the SIM card connector can be shorted with the VCC line to continue proper operation.Pin Description1 VCC. This line supplies the SIM with power. Verify that it leads to the VCC pin of the SIM card connector. It may be necessary to filter noise on the line to prevent a fault from occurring. Please refer to the diagram in the next section as an example.2 Reset. This is an output from the radio. Verify that it leads to the Reset pin of the SIM card connector.3Clock. This is an output from the radio. Verify that it leads to the Clock pin of the SIM card connector.4Input/Output. This is a bidirectional line between the SIM card connector and the RIM GPRS Radio Modem. Verify that it leads to the I/O pin of the SIM card connector.5SIM Detect. The active state of this line is high. This line should be asserted in order to ensure the radio modem can detect the SIM card.6Ground. This is an input to the radio. Short this line to the GND pin of the SIM card connector.
Chapter 6: Interface specification54 RIM GPRS Radio ModemSIM test board integrationRadio Interface PinsThis section describes the purpose of each of the 22 lines that comprise the radio interface to the RIM GPRS Radio Modem.Serial portThe serial port uses pins 13 and 22 to transmit and receive and may be used only by a custom application that resides on the radio modem itself (not by AT and data traffic). Flow control lines are provided for only the primary serial port.Pin descriptionsThe following table lists each pin and describes it in detail.Note: The symbol ~ before the label indicates that line is an active low digital signal.Pin Label Description1 MIC N Analog Microphone Input NegativeThis is an analog input to the radio.2 MIC P Analog Microphone Input PositiveThis is an analog input to the radio.3 SPK N Analog Speaker Negative4SPK PAnalog Speaker Positive
Radio Interface PinsIntegrator Guide 555 AGND Analog GroundThis is an analog ground for the radio.6COV CoverageThis line is a digital output from the radio.The active state of this line is high and indicates that the radio modem is in network coverage, as determined by the presence of a signal from the network base station.When the radio modem does not have contact with the wireless network, this line is low. 7, 8 — Power supplyThese pins supply power to the radio. Since the current requirement during transmission exceeds the current rating of a single line, both lines 7 and 8 should be connected to the power supply. Supplying power to these two lines allows the radio to turn on.9GND GroundThis line should be tied to the system ground of the computing device to ensure proper operation. Pin 18 should also be connected to ground.10 TURNON Turn Radio OnThis line is an input to the radio.This line turns on the radio unit. It is a digital signal that eliminates the need for an on/off switch for the power supply to the radio modem. This is a 3.0 V input to the radio, and is not 5.0 V tolerant.Refer to "Turning off and turning on the radio" on page 57 for more information.11 ONI On IndicateThis line is a digital output from the radio that indicates that the radio is on and operational.This line can be used by a computing device to qualify the handshaking outputs on the serial interface. If CTS is low, and ONI is high, then the unit is ready to receive data, but if CTS is low and ONI is low, then the radio modem is not ready to receive data because it is off.When ONI is low, all inputs to the radio modem should be held low or disconnected. Otherwise, power is consumed and wasted.12 TRI Transmit IndicateThe active (radio transmitting) state of this line is high.This output from the radio modem is asserted while the radio is transmitting a packet to the network base station. TRI has a built-in current limiter that enables it to directly drive an LED , which provides real-time visual feedback that the radio is transmitting packets. If this is not necessary, you can leave the line disconnected.This line supplies 3 mA to a standard LED, and is short-circuit protected. This line is low when the radio modem is off.Pin Label Description
Chapter 6: Interface specification56 RIM GPRS Radio Modem13 RX2 Secondary ReceiveThis line is meaningful only as part of a debug port primarily for RIM internal use.14 ~RI ~Ring IndicateThis line is an output from the radio modem. It indicates an incoming call on the serial line.When ~DTR is not asserted (high), the radio modem asserts ~RI (low) to indicate that it has data waiting for the computing device. The radio modem does not transfer the data until ~DTR is asserted (low). This line can be used to wake up a suspended computing device when the radio modem needs to communicate with it. If ~DTR is already asserted (low) when the radio modem has data to send the computing device, ~RI is not asserted.15 ~CTS ~Clear To SendThis line is a digital output from the radio modem to the computing device. The active (clear to send) state of this line is low.When asserted low by the radio modem, this line indicates that it is ready to receive data from the computing device. While this line is high, any data sent from the computing device to the RIM GPRS Radio Modem may be lost. This line is a flow control mechanism that is normally reacted to by the UART in your serial communication system. If you do not plan to use it, leave ~CTS disconnected.16 ~RTS ~Request To SendThis line is an input to the radio modem. The active, request to send, state of this line is low.This line should be asserted low by the computing device to indicate that it is ready to receive data from the radio modem. This is a flow control mechanism that is normally handled by the UART in your serial communication system. If you do not connect this line to your UART, it must be tied low so that it is permanently asserted and enables communication.If your device buffer overflows, it should set RTS inactive to signal the radio modem to pause sending data. There might be a 16-byte overrun after the RTS line is made inactive, so your device should set RTS inactive at least 16 bytes before any critical buffer overflows.17 ~DSR ~Data Set ReadyThis line is a digital output from the radio modem.The active, data set ready (DSR), state of this line is low. Your computing device can use DSR as a confirmation that the radio modem knows the state of the terminal..18 GND GroundThis line should be tied to the system ground of the host unit to ensure proper operation. Pin 9 should also be connected to ground.Pin Label Description
Turning off and turning on the radioIntegrator Guide 57Turning off and turning on the radioTo determine the current state of the radio, observe the ONI line. If ONI is high, the radio is on or is in the process of shutting down. If ONI is low, the radio is off or in the process of turning on. The TURNON pin is a digital signal that turns the radio on and off. It eliminates the need for a power switch across the power supply to the radio. TURNON also enables and disables the serial port.19 ~DTR ~Data Terminal ReadyThis line is a digital input to the radio.The active, data terminal ready (DTR), state of this line is low, and indicates that the computing device is ready to receive data from the radio modem. De-asserting this line high turns communication off; the radio modem does not attempt to deliver data to the computing device until ~DTR is again asserted low.If you do not intend to use ~DTR, tie it to ground to ensure that it is always asserted during radio modem operation.This line should be deasserted when the radio modem is off. Driving ~DTR low when the radio modem is off will consume unnecessary power.20 TX Transmitted dataThis is an input to the radio. Its idle (no serial transmit activity) state is high.This line is an asynchronous serial input to the radio modem, and should be connected to the host terminal's Transmit Data output. This line carries data at a maximum of 115 200 bits per second. Parameters are 8 bits, No parity, 1 stop bit. This baud rate can be changed using the AT+IPR=<rate> AT command.21 RX Received dataThis line is an output from the radio modem. Its idle (no serial receive activity) state is high.This line is an asynchronous serial output from the radio modem, and should be connected to the host terminal’s Receive Data input. This line carries data at at a maximum of 115 200 bits per second. Parameters are 8 bits, No parity, 1 stop bit. The baud rate can be changed using the AT+IPR=<rate> AT command.22 TX2 Secondary TransmitThis line is for RIM internal use only.Pin Label DescriptionWarning: All unused inputs to the radio should be tied to ground, and any unused outputs from the radio should be left disconnected.
Chapter 6: Interface specification58 RIM GPRS Radio ModemTurning on the radioYou can turn the radio modem on by setting TURNON to high.The following considerations are related to turning on the radio:•During the RIM GPRS Radio Modem’s startup procedure, which can take several seconds, all changes to TURNON are ignored by the operating system.•Do not use TURNON to indicate radio status. ONI must be used as the indicator of the radio status. It is possible for the radio to be off even though TURNON is asserted. In this case, you can turn on the radio by setting TURNON low and then high again.•If the radio fails to respond to a high TURNON line, the radio may require service or the power supplied to the radio may be too low for proper operation.Turning off the radio The RIM GPRS Radio Modem requires a controlled shutdown. You can turn the radio modem off by de-asserting TURNON. The following considerations are related to turning off the radio:•During the RIM GPRS Radio Modem’s shutdown procedure, which can take several seconds, all changes to TURNON are ignored by the operating system.•Do not use the TURNON state to indicate radio status. ONI must be used to indicate radio status. It is possible for the radio to be on even though TURNON is de-asserted. In this case, you can turn off the radio by setting TURNON high and then low again.•To make sure that power consumption is reduced to the lowest possible levels, all inputs to the radio should be low when the radio is turned off.•Data that has been received by a RIM GPRS Radio Modem from the network, but has not been transferred to the computing device, will not be saved. The data will be lost when the unit begins shutdown or is turned off.•It is only necessary to remove power from pins 7 and 8 if the application is very power constrained.Resetting the RadioRIM recommends that you incorporate a method to remove power from pins 7 and 8 on the radio modem during the development and prototype phase. This will enable the device to perform a hard reset of the radio modem, which can be useful in some debugging testing situations.
Loading firmware (optional)Integrator Guide 59Loading firmware (optional)RIM firmware controls the operation of the radio modem. RIM is committed to the quality of its firmware, and may periodically make improvements or optimizations to it. The radio modem is designed so that loading revised firmware is not required; two RIM GPRS radio modems with different firmware revisions will always be able to communicate with each other, and with the same fixed servers, through the wireless network. Nevertheless, you may choose to design your application in such a way that allows the RIM firmware to be updated after your product is deployed in the field.Because of its large size, firmware cannot be updated over the air. If you decide to implement the ability to update the firmware after the radio modem is deployed, RIM can provide a command-line programming utility that loads firmware into the radio modem. If your device is not MS-DOS-based, the programming utility must reside on a PC or laptop that is connected through its COM port to the radio modem’s RX and TX lines. This means that the RX and TX lines are brought out to an external connector, and a switch is required to select whether the radio modem is connected to your processor or to the external programming computer. Other lines that are required during reprogramming are DTR (must be asserted low) and GND.This external serial port can also be useful for FCC certification testing, and it is highly recommended that this be incorporated into at least one device designated for testing purposes.
Chapter 6: Interface specification60 RIM GPRS Radio Modem
Chapter 7Antenna selectionThis section provides information on the following topics:•Introduction to antenna terminology•Selecting an antenna•Antenna requirements•Antenna design considerations•Shielding
Chapter 7: Antenna selection62 RIM GPRS Radio ModemIntroduction to antenna terminologyThis section introduces some of the terminology that is used to describe antennas, and expands on the summary of antenna requirements that are described below (refer to page 64).Gain and ERPAntennas produce gain by concentrating radiated energy in certain areas, and radiating less energy in other directions. The amount of gain depends on the radiation pattern, antenna match, and antenna efficiency. Antenna gain is given as a rating of the maximum increase in radiated field energy density relative to a dipole antenna, expressed in decibels of power gain (dBd).A dipole is a balanced antenna consisting of two radiators that are each a quarter-wavelength, making a total of a half-wavelength. The widespread use of half-wave dipole antennas at VHF and UHF has led to the use of a half-wave dipole as the reference element.At the antenna port, the output power of the RIM GPRS Radio Modem is as high as 1.0 W at the antenna port. The antenna gain (or loss) results in an increase (or decrease) in this value. The actual output from the antenna is called the Effective Radiated Power (ERP). For example, if the radio modem delivers 2.0 W of power to a 2.3 dBd gain antenna, the ERP is 2.0 ×10^(2.3÷10) = 3.4 W, the actual power radiated by the antenna in the direction of maximum gain and polarization.Impedance matching, return loss, and VSWRThe antenna, cables, and connectors in a radio frequency system must all possess the same impedance. The impedance required by the RIM GPRS Radio Modem is 50 Ω, which is a widely-available industry standard. Any deviation from this value may result in impedance mismatch and signal loss.Impedance mismatch can also be caused by cable connections, cable lengths, and imperfections in the cables and connectors. The mismatch causes some of the radio frequency energy to be reflected back from the mismatch location. This reflection interferes with the signal and reduces its amplitude, which results in power loss.Antenna mismatch can be expressed as a Return Loss (RL), which is the ratio of reflected power to the incident power, expressed in decibels.
Selecting an antennaIntegrator Guide 63Equation 1: Return LossThe Voltage Standing Wave Ratio (VSWR) is another way to express the ratio of incident power (from the radio modem) to reflected power (into the radio modem).Equation 2: VSWRVSWR=1 or RL=-∞dB is a perfect match. In practice, imperfections are inevitable, which means that VSWR will be greater than 1 and RL will be a negative number.VSWR and RL normally vary as a function of frequency.Antenna sizeThe optimal antenna radiation efficiency is produced by an antenna measuring one wavelength, l. The value of l for the RIM GPRS Radio Modem is calculated by dividing the speed of light c = 3 x 108 m/s by the center frequency. Antenna lengths of λ/2, λ/4, and λ/8 also work well, and usually result in a relatively well matched antenna. λ/2 or λ/4 can be electrically “shortened” by adding load matching elements to control the antenna match. However, this shortening will reduce the antenna efficiency and, therefore, the effective radiated power.Selecting an antennaThe antenna is one of the most important components of a wireless communication system. The right antenna will maximize the coverage area of the RIM radio modem.The antenna that you choose should suit your project’s needs. There are many different antenna types and options that will meet your engineering and user requirements and remain within budget constraints. We strongly recommend that you use an experienced antenna provider in order to realize the highest gain possible. A well-designed antenna solution will maximize your application’s efficiency, coverage area, and battery life.RL =× 10 10log PPreflectedoutputVSWR =+1PP1 - PPreflectedoutputreflectedoutput
Chapter 7: Antenna selection64 RIM GPRS Radio ModemAntenna manufacturers have designed and manufactured a wide variety of antennas for use on the GPRS network and for other radio-frequency (RF) systems operating in the same frequency range. RIM does not recommend specific antennas because the choice of antenna is application-dependent.An antenna’s performance depends on its configuration and environment; the same antenna behaves differently from device to device, even if these devices use the same RIM radio modem. For example, a magmount antenna might be suitable for some applications, because it includes a magnetic base that clamps the antenna onto a metal surface. This surface is called a ground plane, and it reflects electromagnetic radiation that would otherwise be lost to the antenna. This reflection effectively doubles the length of the antenna by creating a virtual “mirror image” of the antenna beneath the plane.Antenna requirementsThe antenna system used with the RIM GPRS Radio Modem has the following minimum requirements:•For the RIM GPRS Radio Modem hardware integration to be fully compatible with the RIM 902M and RIM 802D radio modems, the antenna must be modular.•GPRS has several frequency bands, 1900, 1800, 900, and 850, each of which requires its own antenna.•GPRS, Mobitex, and DataTAC networks have different center frequencies. If the same antenna is used for all three networks, receiver sensitivity is reduced. Contact the RIM OEM Engineering Development team for more information on backward compatibility.•The RIM GPRS Radio Modem requires an impedance of 50 Ω.Antenna design considerationsProper antenna positioning maximizes the gain provided by the antenna. When you determine the proper antenna position, consider the environment in which the device will be used. Physical devices can vary significantly, and incorporating the antenna is an integral part of a successful design.When you are designing an antenna, you should consider the following issues:•vertical polarization•proximity to active electronics•transmit interference•device position•antenna cable
Antenna design considerationsIntegrator Guide 65These issues are discussed below.Vertical polarizationBecause the GPRS network is based on a vertically polarized radio-frequency transmission, the application’s antenna should be oriented vertically and upward when the radio modem is in use. In small, hand-held devices, a user-friendly design would allow the antenna to be folded out of the way when it is not in use.Proximity to active electronicsYou should position the antenna as far from the computing device’s active electronics as possible. Metal construction in a computing device’s case and internal components may attenuate the signal in certain directions, which reduces the radio modem’s sensitivity and transmit performance when the computing device is held or positioned in certain orientations. However, the judicious use of metal in the construction of a ground plane for an antenna can significantly improve the antenna gain and the system’s coverage.Transmit interferenceTo prevent interference from the antenna into the radio modem during transmit, the antenna must be placed a minimum 2 cm (0.8”) away from the radio modem. For best performance, the antenna should be placed more than 5 cm (2”) away from the radio modem.Device positionIf the computing device is designed to sit on a surface, the antenna should be as far from the bottom of the device as possible. This reduces radio-frequency (RF) reflections when the device is placed on a metal surface.When the computing device is hand-held or is worn next to the user’s body, the antenna should be positioned to radiate away from the body. Otherwise, the body absorbs the radiated energy and the effective coverage area of the radio is reduced. Positioning the antenna away from the body also helps the device meet the FCC’s RF exposure (SAR/MPE) requirements.
Chapter 7: Antenna selection66 RIM GPRS Radio ModemAntenna cableFor best results, the antenna should be connected directly to the antenna cable. If you require an extension cable, it should be low loss, as short as possible, and have an impedance of 50 Ω. You must use a proper matching connector, because each connector in the signal path introduces a return loss and reduces performance.Additional notesThe following additional notes are provided courtesy of Larsen Antenna Technologies:“There are a number of critical issues to consider when integrating antennas into portable RF systems. It is important to make allowances early in the design process to optimize performance and provide flexibility in antenna choice. Generally, it is prudent to position the antenna “up and away” from the radio modem and printer motors to maximize noise reduction and receiver desensitivity. Other “high noise” areas to be avoided include displays and keypads that can seriously degrade antenna performance. Advances in antenna shielding techniques may also be incorporated to retain the integrity of the system.“Mechanical issues for an integrated antenna revolve around proper cable routing and use of service loops to provide uninhibited antenna rotation if needed. The ability to position the antenna in a manner which will result in antenna deformation, impact resistance and aesthetic requirements must also be considered to design a workable form factor. The option to position the antenna vertically when in use so that performance is optimized is another consideration which can be limiting and a true consideration when choosing to use off-the-shelf solutions.“Custom antenna solutions may be worthy of consideration for some projects. In some applications, custom designed antennas have shown performance increases of up to 2 dB when compared to quality off-the-shelf solutions. The cost of a custom design and resulting production can be as cost efficient as an off-the-shelf solution for projects requiring quantities as low as 20,000 antennas. “The use of state-of-the-art antenna theory, printed circuit technology, and application of evolving concepts can produce antennas with reduced sized without compromising performance.“Examining the options available, and choosing an antenna early in the development process, can only benefit the performance and aesthetic appeal of a product. The engineering staff at Larsen Antenna Technologies are experts in this field with over 30 years of experience in helping OEMs reach their antenna design and production objectives.”
ShieldingIntegrator Guide 67ShieldingRIM GPRS Radio Modem’s electrical design provides high immunity to radio-frequency (RF) noise, also called electromagnetic interference (EMI). The metal casing also acts as a shield that helps to minimize the effect of RF interference that originates in the computing device to which it is attached. The metal casing also prevents the RIM radio modem from emitting RF energy into the computing device and disrupting the computing device’s operation.Consequently, you do not need to provide any additional RF shielding between the radio modem and a computing device, unless the environment contains an extreme level of RF noise. In fact, additional RF shielding is less important than making sure that the radio modem’s power supply is free of high-frequency electrical noise.The antenna must be positioned so that the radiated energy is directed away from the computing device. If your application does not permit this positioning, RF shielding may be required between the antenna and the computing device.Note: Circuits with a high impedance, and sensitive analog circuits, are especially vulnerable to nearby radio frequency emissions, and may need to be shielded. Circuits like CRTs and LCD display drivers are most often affected.
Chapter 7: Antenna selection68 RIM GPRS Radio Modem
Chapter 8CertificationThis section provides information on the following topics:•FCC radio frequency exposure rules•Complying with FCC SAR/MPE guidelines
Chapter 8: Certification70 RIM GPRS Radio ModemFCC radio frequency exposure rulesBased on FCC rules 2.1091 and 2.1093 and FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields, OET Bulletin 65, and its Supplement C, all integrations of the RIM GPRS Radio Modem are subject to routine environmental evaluation for radio-frequency (RF) exposure prior to equipment authorization or use.For portable devices, defined in accordance with FCC rules as transmitting devices designed to be used within 20 cm of the user body under normal operating conditions, RF evaluation must be based on Specific Absorption Rate (SAR) limits in W/kg. SAR is a measurement of the rate of energy absorption per unit mass of body tissue.For mobile devices, defined as transmitting devices designed to be generally used such that a separation distance of at least 20 cm is maintained between the body of the user and the transmitting radiated structure, the human exposure to RF radiation can be evaluated in terms of Maximum Permissible Exposure (MPE) limits for field strength or power density in mW/cm2.Complying with FCC SAR/MPE guidelinesAntennaIf the RIM GPRS Radio Modem is integrated in a vehicle, and the Eclipse magmount antenna is used, the MPE limits are not exceeded provided that the antenna is installed at least 20 cm from any edge of the vehicle rooftop. This can be accomplished by making it mandatory for customers to put a prominent warning in their user manual, which warns installers to properly mount the antenna in the centre of the vehicle rooftop. The user should also be warned to maintain the minimum required distance from the antenna.The submission to the FCC should include end product information, end product SAR/MPE test report, and a reference to the RIM module FCC ID for all other Part22 and 24 requirements.Note: The FCC grant for the RIM GPRS Radio Modem does not limit or restrict it to operating in vehicle-mount configurations. However, in a non-vehicle situation you may need to provide semi-fixed installation procedures for magmount antennas to make sure that the MPE separation distances are met for satisfying grant conditions and to overcome mobility issues caused by such antennas.Warning: It is mandatory for portable end-products, such as handheld and body-worn devices, to comply with FCC RF radiation requirements’ SAR limit.
Complying with FCC SAR/MPE guidelinesIntegrator Guide 71For information on labs for SAR/MPE testing, visit http://www.rim.net/oem.During the SAR/MPE testing, the RIM testing software resides on an external computer that must be able to directly communicate with the radio modem. The device that you submit can meet this requirement one of the following ways: •The device you submit for testing must have an external connector that can be used to connect the radio modem to a computer. •If your device can run DOS-based programs, RIM can provide a DOS-based utility that joins two COM ports. This utility is useful if the radio modem might be connected to a handheld device’s internal COM 4 port.•The device has an external RS-232 serial connection to COM 1. •The device has a virtual link between the two COM ports, so that an external device connected to COM 1 can communicate with the radio modem connected to the internal COM 4, which eliminates the need to remove the radio from the handheld device.SAR and MPE limitsGuidelinesRF exposure distance is based on normal operating proximity to the user’s or nearby persons’ body. This distance is measured from any part of a radiating structure, which is generally the antenna, to the closest body part. If antennas other than those tested by RIM are used, a set of tests must be performed to determine the passing distance that meets the SAR exposure limits for handheld, body-worn, and portable devices, or MPE exposure limits for vehicular and mobile devices.Operating manual compliance statementFor mobile and vehicular devices, Integrators should include a statement in their operation, user, and/or installation manual that informs users of RF exposure issues and make sure that bystanders keep a passing distance from the antenna while it General Population/Uncontrolled exposure1.6 W/kg for partial body exposure, averaged over 1 g of tissue 4 W/kg for hands, wrists and feet averaged over 10 g of tissueNote: The 1.6 W/kg limit applies for most RIM radio modems. Occupational/Controlled exposure8 W/kg for partial body 20 W/kg for hands, wrists and feet.MPE PCS 1900 MHz band: 1 mW/cm2 GSM 850 MHz band: 0.56 mW/cm2
Chapter 8: Certification72 RIM GPRS Radio Modemtransmits. Integrators should provide instructions or diagrams in the manual for proper antenna mounting and position, when applicable, to make sure that the antenna is a safe exposure distance to the operator and nearby persons.For handheld, body-worn, and portable devices, separate FCC approval is required to be in compliance with FCC RF exposure guidelines with respect to the SAR limits.LabellingCompliance with respect to SAR limits which satisfy MPE limits would not require warning labels, but you can use an RF radiation warning label to alert the user or nearby persons about abnormal usage conditions.Installation instructions should, at a minimum, specify the correct mounting procedure on a ground plane, and recommend positioning the antenna so that the minimum distance is kept from any edge of the vehicle rooftop. For more informationSections 2.1091 and 2.1093 of the FCC Rules, which govern RF exposure limits, are available at:web site: http://www.access.gpo.gov/nara/cfr/index.htmlby searching for “47CFR2.1091” and “47CFR2.1093”.Bulletin 65 and its Supplement C, issued by the FCC RF Safety Group (Office of Engineering and Technology), is available at:web site: http://www.fcc.gov/oet/info/documents/bulletins/#65You can obtain further information concerning FCC regulations, including RF exposure limits, by contacting the RF Safety Group:phone: (202) 418-2464email: rfsafety@fcc.govweb site: http://www.fcc.gov/oet/rfsafetyYou can also contact the FCC Call Centre:phone: 1-888-CALL-FCC (1-888-225-5322)You can contact the RIM Engineering Development:phone: (519) 888-7465email: oemsupport@rim.net
Chapter 9SpecificationsThis section provides information on the following topics:•Power supply & typical current usage•Mechanical & environmental properties
Chapter 9: Specifications74 RIM GPRS Radio ModemPower supply & typical current usageRF propertiesSerial communicationsOther features•ARM Processor running at 32.5 MHz•Software can activate/deactivate radioPower supply single power supplyOperating range 3.5 to 4.75V DCTransmit mode up to 2 A (at 4.2V, output 1.0W)1902 models 1802 modelsTransmitfrequency1850 - 1910 MHz824 - 829 MHz1800 MHz890 - 915 MHzTransmit power 1.0 W nominal maximum transmit power at antenna port1.0 W at 1800 MHz2.0 W at 900 MHzReceivefrequency1930 - 1990 MHz869 - 894 MHz1805 - 1880 MHz935 - 960 MHzReceiversensitivitytypical -107 dBm 2.4% bit error rate (BER)typical -107 dBm 2.2439% bit error rate (BER)Multislot Class 88Note: As defined in the GSM specifications, the radio modem’s transmitter can reduce output power when it is near a base station.Serial ports 3.0V asynchronousSecond 3-wire serial port (TX, RX, GND)Link speed 1200 to 115 200 bps
Mechanical & environmental propertiesIntegrator Guide 75•Flow control options: •Hardware•Xon/Xoff•None•Radio parameters stored at power down•Terminal devices may power-down while radio-modem remains operational•Fully shielded metal enclosureMechanical & environmental propertiesAudioWeight 36 g (1.2 oz), including caseFootprint 42.0 by 67.5 mm (1.65" x 2.66")Thickness 8.4 mm (.33")3.0V interfaceconnectors22 pin Flexible Printed Circuit (FPC) connector6 pin FPC connector (GS models only)Antenna cableconnectorMMCXCasing metalOperatingtemperature-30°C to +75°C (at 5-95% relative humidity, non-condensing)Storagetemperature-40°C to +85°CNote: The following audio functionality is not supported:•automatic gain control (your design should include noise suppression)•hands free•echo cancellation
Chapter 9: Specifications76 RIM GPRS Radio ModemGain settingFrequency response (voiceband filter)Input/output impedanceSignal to (noise + distortion)Uplink 0 to 22.5 dB in step of 1.5 dBDownlink -36 to 9 dB in step of 1.5 dB0 -100 Hz max of -34 dB200 Hz Typ of -1.1300 - 3350 Hz min -0.2 dBmax 0.1 dB3400 Hz typ of -0.7 dB4000 Hz typ of -39 dB>=4400 Hz -75 dBGroupdelay500 - 2500Hz min 300 usmax 600 usInput 124 kohm Output minimum 330 ohm (single-ended)15 ohm (differential)maximum 470 pF (single-ended)100 pF (differential)Voiceband ADC minimum 69 dB (PGA=0dB)typical 77 dBVoiceband DAC minimum 47 dB (PGA=0dB)
Chapter 10Glossary
Chapter 10: Glossary78 RIM GPRS Radio ModemTerm MeaningAPN Access Point Name. GPRS network provider's name for a given external network. CBS Cell Broadcast Service. Unacknowledged general short messages to all receivers within a defined geographical areadB Decibel measures power based on a logarithmic scale. 10 dB = 10 times, 3 dB = 2 times, –10 dB = 0.1 times.FPC Flexible Printed Circuit. The interface cable on the RIM GPRS Radio Modem is made using this type of flat multi-conductor wiring. Also known as FFC (Flat Flex Cable).Gain In this document, refers to increase/decrease in radiated power.GMSK The modulation scheme used by airlink communication on GPRS communication. Allows theoretical data rates of 14.4 kbps per timeslot.GPRS General Packet Radio Service. The IP-based data network that supplements the existing GSM voice networks throughout the world.GSM Global System for Mobile Communications. A second generation voice communication network standard accepted throughout the world.IP Internet Protocol. Standard network layer protocol used over many networks including the GPRS network and the Internet.MMCX The connector on the RIM GPRS Radio Modem to which an antenna cable is connected.Network Operator The corporation or agency that installs, maintains and authorizes use of a GPRS network in a given area, usually within one country.Noise Undesired, random interference combining with the signal. If the device is not immune to noise, the interference must be overcome with a stronger signal strength. Noise can be produced by electronic components.OEM Original Equipment Manufacturer. Usually implies that the “OEM product” carries another manufacturer’s name. The RIM GPRS Radio Modem is designed to be embedded in OEM terminals, PCs, and data gathering equipment.OSI The Open Systems Interconnection model allows different systems, following the applicable standards, to communicate openly with each another.
Integrator Guide 79Polarity Direction of current flow. Connecting some cables with the wrong polarity (i.e. backward) may damage the device.QoS Quality Of Service.Radio Modem A device that provides modulation and demodulation for a radio frequency communications system.Radiation In this document, refers to electromagnetic energy emitted in the radio frequency (RF) band. Return Loss A measure of antenna matching.RF Radio Frequency.RS-232 The standard asynchronous serial communications interface used by most existing personal computers and mini-computers. Usually refers to both the communications protocol and the electrical interface.RSSI Received Signal Strength Indicator. A high RSSI represents a strong signal received by the radio modem from the base station.SIM Subscriber Identity Module. A SIM is necessary in order to activate a GSM/GPRS device on the network.SMS Short Message Service. Messaging services over the circuit-switched GSM networks, up to a maximum of 160 characters. TTL Transistor-Transistor Logic. Used in digital circuits. Low (0) is represented by 0 V and High (1) by 5 V. The RIM RIM GPRS Radio Modem uses 3.0V for High.UART Universal Asynchronous Receiver/Transmitter. Used as an interface between a microprocessor and a serial port.VSWR Voltage Standing Wave Ratio. A measure of antenna matching. Refer to "Antenna selection" on page 61 for more information.Term Meaning
Chapter 10: Glossary80 RIM GPRS Radio Modem
Integrator Guide 81IndexNumerics22-pin interface cableconnecting, 28, 34illustration, 29, 356-pin connectorillustration, 346-pin interface cableconnecting, 33AAC outletconnecting the test board, 31, 36adhesive, industrial, 41alkaline batteriesoverview, 47warning, 48amplitude, 62antenna, 64cable, 43, 64, 66connectors, 43device position, 64distance from radio modem, 65ERP, 62extension cables, 66gain, 62, 65ground plane, 64impedance, 62introduction to terminology, 62magmount, 64matching, 63MMCX connector, 31, 36, 43modularity, 64MPE limits, 70orientation, 65position, 65positioning, 31, 36, 64proximity to active electronics, 65radiation efficiency, 63return loss, 62, 79RF exposure requirements, 65selecting, 63shielding, 67size, 63SMA plug, 30, 36, 43transmit interference, 64, 65vertical polarization, 64, 65VSWR, 62, 79antenna cableimpedance, 43in integrator kit, 43Integrator Kit, 44part numbers, 44antenna development, overview, 23arrestor circuits, 48AT Commands, 52attenuation, 65audiofrequency response, 76gain setting, 76input/output impedance, 76signal to (noise + distortion), 76specifications, 75automotive suppliesadapters, 48power fluctuations, 48Bbatteriesalkaline, 47equivalent series resistance, 47nickel cadmium, 47overview, 47recommended, 48single-use, 48batteryconserving power, 16bolts, 40
Index82 RIM GPRS Radio ModemCcableantenna, 66radio interface, 41SIM interface, 42cablesserial, 41certificationIndustry Canada, 6certification testing, 59Class B compliance, 6Clock SIM interface pin, 53complianceClass B, 6FCC statement, 6contacting RIM, 11, 20, 22COV pin, 55coverageantenna positioning, 31, 36CTS pin, 56Ddevelopment processantenna development, 23FCC certification, 23field trials, 23power supply development, 23printed circuit board development, 23software development, 23development process, overview, 21dimensions, 39DSR pin, 57DTR pin, 57, 59EEffective Radiated Power, 62environmental propertiesspecifications, 75environmental testing, 38equationsreturn loss, 63VSWR, 63equivalent series resistance, 47ESR, 47FFCCcertification testing, 59compliance statement, 6interference requirements, 6MPE limits, 70, 71, 72SAR limits, 70, 71, 72FCC certification, 23getting started, 22overview, 23pre-design research, 22Federal Communications Commission, 59field trials, overview, 23firmware, loading, 59FPC cable, 41frequencyVSWR, 63frequency response, specifications, 76GG model test board, illustration, 33gain, 65gain settingspecifications, 76General Packet Radio Service, 16Global System for Mobile Communication, 16GND pin, 55, 57, 59GPRS radio modembatteries, 47bottom casing, 41environmental testing, 38GSM compliance, 52integration overview, 38integration possibilities, 15MMCX jack, 30, 36mounting, 39mounting methods, 40, 41noise immunity, 15operating temperature, 38power requirements, 46, 47power supply parameters, 46radio interface, 54receiver sensitivity, 15serial interface, 52single board design, 16size, 16, 39specifications, 74storage temperature, 38transmitter, 16GPRS radio modem specificationsdimensions, 39weight, 38GPRS, countries with, 17Ground SIM interface pin, 53GS model test board, illustration, 28GSM, 16Hheadset
IndexIntegrator Guide 83connecting, 31, 36Iillustrations22-pin interface cable, 29, 356-pin connector, 34antenna MMCX connector, 31, 36FPC interface cable specifications, 42G model test board, 33GS model test board, 28Integrator Kit antenna cable, 44radio modem underside, 34SIM card holder, 30SIM test board integration, 54SMA connector, 31, 36test board underside, 30impedance, 43, 62industrial adhesive, 41Industry Canadacertification, 6Class B compliance, 6input/output impedance, specifications, 76Input/Output, SIM interface pin, 53integrationGPRS radio modem, 15illustrated, 21overview, 38process overview, 21integration processantenna development, 23FCC certification, 23field trials, 23power supply development, 23printed circuit board development, 23software development, 23Integrator Kitcontent, 22overview, 20interfaceconnecting to, 41test board, 27UART, 79interface cable22-pin, 28, 346-pin, 33SIM, 42specifications, 42interferenceFCC requirments, 6shielding, 67LLED indicators, 27loading, firmware, 59Mmagmount antenna, 30, 36mechanical propertiesspecifications, 75MIC N pin, 54, 55MIC P pin, 54microphone/speaker jack, 27minimum requirements, 64MMCX connector, 43illustrated, 31, 36mountinghole pattern, 40overview, 39mounting methodsbolts, 40permanent industrial adhesive, 41standoffs, 40tie wraps, 40MPE limitsantenna, 70, 71operating manual compliance statement, 71researching, 72RF exposure, 70, 71warning labels, 72MSG pin, 55Nnetwork coverage, antenna positioning, 31, 36networksGPRS, 16GSM, 16nickel cadmium batteries, 47noiseshielding, 67noise immunity, overview, 15OOEM, 78on/off switch, 26ONI pin, 55, 58operating temperature, 38PPCB development, 23permanent industrial adhesive, 41pinsCOV, 55CTS, 56DSR, 57DTR, 57, 59
Index84 RIM GPRS Radio ModemGND, 55, 57, 59MIC N, 54MIC P, 54MSG, 55ONI, 55, 58power supply, 55radio interface, 54RI, 56RTS, 56RX, 57, 59RX2, 56SIM interface, 53SPK N, 54SPK P, 54TRI, 56TURNON, 55TX, 57, 59TX2, 57plug-in suppliestransient voltage protection, 48polarizationvertical, 65powerautomotive supples, 48LC filter, 46minimum voltage, 46plug-in supplies, 48requirements, 46shunt capacity, 46source requirements, 47supply parameters, 46power supplyalkaline batteries, 48automotive supplies, 48load specifications, 46plug-in supply, 48specifications, 74test board, 27power supply developmentoverview, 23printed circuit board developmentoverview, 23Rradio coveragemaximizing, 16radio interface cable, 41radio interface pinsCOV, 55CTS, 56description, 54DSR, 57DTR, 57, 59GND, 55, 57, 59MIC N, 54MIC P, 54MSG, 55ONI, 55, 58power supply, 55RI, 56RTS, 56RX, 57, 59RX2, 56SPK N, 54SPK P, 54TRI, 56TURNON, 55TX, 57, 59TX2, 57radio modemantenna requirements, 64distance of antenna to, 65models, 14resetting, 59specifications, 74turning off, 58turning on, 58radio signalattenuation, 65receiver sensitivity, 15requirements, antenna, 64Reset SIM interface pin, 53resetting the radio modem, 59return loss, 62equation, 63RF propertiesspecifications, 74RI pin, 56RIMcontacting, 20RIM firmware, 59RIM GPRS Radio Modemadvantages, 14integration possibilities, 15models, 14network compatibility, 17overview, 14RIM, contacting, 11, 22ripple specification, 46RS232, 79RS-232 interface, 26RTS pin, 56RX pin, 57, 59RX2 pin, 56
IndexIntegrator Guide 85SSAR limitsmore information, 72operating manual compliance statement, 71RF exposure, 70, 71warning labels, 72serial cable, connecting to the test board, 29, 35serial communicationsspecifications, 74serial interface, 52serial port, 54setting up the test board (G), 32setting up the test board (GS), 27shielding, 67shutting down the radio modem, 58signal to (noise + distortion), specifications, 76SIM cardactiviation, 20inserting into holder, 29, 35warning, 29, 35SIM card holder, 27illustration, 30SIM Detect SIM interface pin, 53SIM interface pins, 53Clock, 53Ground, 53Input/Output, 53Reset, 53SIM Detect, 53VCC, 53SIM test board incorporation, 54SIM, interface cable, 42single board design, 16single-use batteriesoverview, 48warning, 48size, GPRS radio modem, 16, 39SMA connectorillustrated, 31, 36SMA plug, 30, 36, 43software development, 23specificationsaudio, 75dimensions, 39environmental properties, 75frequency response, 76gain setting, 76input/output impedance, 76interface cable, 42mechanical properties, 75minimum voltage, 46noise immunity, 15power supply, 74receiver sensitivity, 15RF properties, 74ripple, 46serial communications, 74shielding, 15signal to (noise + distortion), 76size, 16transmitter range, 16weight, 38SPK N pin, 54SPK P pin, 54standoffs, 40storage temperature, 38Subscriber Identity Module, 20support, contacting, 11, 20, 22Ttemperatureoperating, 38storage, 38warning, 38test boardantenna, 30, 36antenna cable, 43, 44components, 26connecting the antenna, 30, 36connecting the headset, 31, 36connecting to AC outlet, 31, 36connecting to the computer, 29, 35output to computer, 26power switch, 31, 36radio interface cable, 41set up overview (G), 32set up overview (GS), 27SIM interface cable, 42turning off, 31, 36turning on, 31, 36test board componentsLED indicators, 27microphone/speaker jack, 27on/off switch, 26power supply, 27RS-232 interface, 26SIM card holder, 27test points, 26test points, 26testingcertification, 59environmental, 38tie wraps, 40warning, 41transmit interference, 65transmitter, efficiency, 16
Index86 RIM GPRS Radio ModemTRI pin, 56turning off the radio modem, 58turning on the radio modem, 58TURNON pin, 55TX pin, 57, 59TX2 pin, 57VVCC pin, 53voltage regulators, 48voltage, minimum, 46VSWR, equation, 63Wweight, 38workflow, integration, 21Zzener diodes, 48
IndexIntegrator Guide 87
© 2002 Research In Motion LimitedPublished in Canada

Navigation menu