Important safety and compliance information This section provides information on the following topics: • FCC compliance statement (USA) • Industry Canada Certification • EU Regulatory Conformance...
FCC compliance statement (USA) FCC Class B Part 15 This section applies to the RIM OEM Radio Modem for GSM/GPRS Wireless Networks (R6420GN). The device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: •...
The device complies with Industry Canada RSS 133, under certification number 2503A-R6420GN. Class B compliance The RIM OEM Radio Modem for GSM/GPRS Wireless Networks complies with the Class B limits for radio noise emissions as set out in the interference-causing equipment standard entitled “Digital Apparatus,”...
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Important safety and compliance information RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Related documentation..................11 The RIM OEM Radio Modem for GSM/GPRS Wireless Networks....13 HAPTER GPRS network technology ................14 About the RIM 1902G and RIM 1802G radio modems .......14 Range of applications................15 Receiver sensitivity...................16 Noise immunity ..................16 Powerful and efficient transmitter ............17 Small size ....................17...
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Integrating the RIM OEM Radio Modem ............. 37 HAPTER Overview ......................38 Mounting methods...................39 Bolts or standoffs ..................39 Tie wraps ....................40 Permanent industrial adhesive...............41 Cables and connectors ..................41 Radio interface cable and connector ............41 SIM interface cable and connector ............42 Antenna cable and connectors..............42 Power requirements ..................
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Antenna selection ..................59 HAPTER Antenna terminology..................60 Selecting an antenna..................61 Antenna requirements ..................62 Antenna design considerations ..............62 Shielding ......................64 Specifications ....................65 HAPTER Power supply and typical current usage ..........66 RF properties .....................66 Serial communications................66 Mechanical and environmental properties...........67 Audio......................67 Index.......................
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RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
About this guide This guide explains how to integrate the RIM OEM Radio Modem for GSM/GPRS Wireless Networks 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: •...
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About this guide RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Chapter 1 The RIM OEM Radio Modem for GSM/GPRS Wireless Networks This section provides information on the following topics: • GPRS network technology • About the RIM 1902G and RIM 1802G radio modems...
About the RIM 1902G and RIM 1802G radio modems The RIM OEM Radio Modem for GSM/GPRS Wireless Networks sets a new standard for radio modem performance. The radio modem’s 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 allowable download rates using a single receiver on a GPRS network.
• small size These benefits of these features are described below. Range of applications RIM radio modems are designed to integrate easily into computing devices for a wide range of applications, such as the following ones: • laptop computers •...
The RIM 1902G and RIM 1802G typically have receiver sensitivities of -107 dBm with a 2.2439% bit error rate (BER). Note: BER is an industry standard error rate that is used to define sensitivity; it does not indicate that 2.2439% of the data that is passed by the radio to the application is corrupted.
When necessary, the RIM 1902G can supply a full 1 watt at 1900 MHz and 0.8 watts at 850 MHz. The RIM 1802G can supply a full 1 watt at 1800 MHz and 2 watts at 900 MHz. The RIM 1902G and RIM 1802G quickly decrease 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.
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Chapter 1: The RIM OEM Radio Modem for GSM/GPRS Wireless Networks RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Chapter 2 Getting started This section provides information on the following topics: • about the Integrator Kit • working with RIM • integration overview...
Chapter 2: Getting started About the Integrator Kit RIM is committed to facilitating the integration of the RIM OEM Radio Modem for GSM/GPRS Wireless Networks. RIM provides works closely with partners to evaluate the feasibility of implementing a wireless communication solution and to develop an application in the shortest time possible.
Develop an antenna Start developing an antenna. The antenna that is provided with the Integrator Kit has been certified for use with the RIM OEM Radio Modem for GSM/GPRS Wireless Networks. If this antenna does not meet your needs, develop an antenna for use with the final product.
For RIM 1802G: R&TTE and GCF Pilot/Beta release Contact RIM prior to the 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 confirm that the release conforms to legal requirements.
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Chapter 2: Getting started RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Chapter 3 Setting up the Interface and Test Board This section provides information on the following topics: • Interface and Test Board components • Setting up the Interface and Test Board (on-board SIM configuration) • Setting up the Interface and Test Board (off-board SIM configuration)
The RIM Interface and Test Board provides a standard RS-232 serial interface between a computer and the radio modem. The Interface and Test Board enables you to connect the RIM OEM Radio Modem for GSM/GPRS Wireless Networks to a standard computer using a COM port or to a terminal device using a RS-232 serial port.
To use the Interface and Test Board that is provided with your Integrator Kit, you must connect the RIM 1902G or RIM 1802G to an antenna, SIM card, and a computer (or another device with a RS-232 serial interface). Use the Interface and Test Board and cables that are supplied with your Integrator Kit.
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Chapter 3: Setting up the Interface and Test Board Microphone and Power jack speaker jacks Mic Spkr RS-232 On/off switch interface 22-pin connector cable Test point indicator GPRS radio modem Interface and Test Board for on-board configuration – top view RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Setting up the on-board SIM configuration To connect the radio modem to the Interface and Test Board Note: This step is only necessary if the radio modem is not already connected to the Interface and Test Board. The 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 Interface and Test Board and the radio modem.
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Underside of the test board showing the on-board SIM card holder 2. Slide the SIM card holder in the direction of the arrow to unlock it, and then lift the cover open. RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Setting up the on-board SIM configuration 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.
To use the Interface and Test Board that is provided with your Integrator Kit, you must connect the RIM OEM Radio Modem for GSM/GPRS Wireless Networks to an antenna, SIM card, and computer (or another device with a RS-232 serial interface). Use the Interface and Test Board and cables that are supplied with your Integrator Kit.
Setting up the off-board SIM configuration Microphone and Power jack speaker jacks Mic Spkr RS-232 On/off switch interface 22-pin 6-pin connector connector cable SIM card holder Test point GPRS radio modem indicator Interface and Test Board for off-board configuration— top view To connect the SIM card to the Interface and Test Board Note: This task only applies to the off-board SIM configuration.
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Interface and Test Board and the radio modem. This cable also carries control and status signals, such as 1. At the top of the radio modem, push the two black tabs up and away from the connector. RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Setting up the off-board SIM configuration Connecting the 22-pin cable to the radio modem 2. With the blue side facing the Interface and 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.
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Refer to "Turning on and turning off the radio" on page 57 for more information. To connect the headset 1. Insert the microphone plug into the microphone jack. 2. Insert the speaker plug into the speaker jack. RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Chapter 4 Integrating the RIM OEM Radio Modem for GSM/ GPRS Wireless Networks This 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 RIM OEM Radio Modem for GSM/GPRS Wireless Networks Overview This 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...
Mounting methods Mounting methods RIM OEM Radio Modem for GSM/GPRS Wireless Networks 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.
Chapter 4: Integrating the RIM OEM Radio Modem for GSM/GPRS Wireless Networks Radio mounting details Tie wraps You 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.
Choose an adhesive based on its ability to stick to the material that is used in the radio modem’s outer casing and the surface to which the radio modem will be mounted. The RIM OEM Radio Modem for GSM/GPRS Wireless Networks’s bottom casing is magnesium.
The antenna cable that you use should have low loss, an impedance of 50 Ohm, and an MMCX plug that mates with the RIM 1902G or RIM 1802G MMCX jack. The other end of the cable can be any connector with an impedance of 50 Ohm. An SMA screw-on connector is suitable and widely available.
Cables and connectors Integrator Kit antenna cable Huber & Suhner provides antenna cables and connectors. The parts described below have an impedance of 50 Ω and are suitable for use with the RIM 1902G or RIM 1802G. Part number Cable or connector...
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Chapter 4: Integrating the RIM OEM Radio Modem for GSM/GPRS Wireless Networks RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Chapter 5 Power requirements This section provides information on the following topics: • Load specifications • Power requirements • Batteries • Plug-in supplies • Automotive supplies...
The RIM 1902G or RIM 1802G requires a clean, stable 3.5 to 4.75 volt source that is capable of delivering a 577us burst every 4.616 ms of up to 1.2 A (for the RIM 1902G) or 2.0 A (for the RIM 1802G) when it is required by the transmitter.
These sources are discussed below. Batteries If the RIM 1902G or RIM 1802G 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.
Refer to "Load specifications" on page 46 for more information. Automotive supplies If you plan to power the RIM 1902G or RIM 1802G from an automotive supply, you must take steps to protect the radio modem from the intense power fluctuations that occur when an automobile starts.
Chapter 6 Interface specification This section provides information on the following topics: • RIM 1902G or RIM 1802G interface • AT Commands • SIM interface pins • Radio interface pins • Turning on and turning off the radio • Loading firmware (optional)
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 1902G or RIM 1802G can be connected directly to a microcontroller, or through a Universal Asynchronous Receiver/Transmitter (UART) to a microprocessor data bus.
This is an output from the radio. Verify that it leads to the clock pin of the SIM card connector. Input/Output. This is a two-way line between the SIM card connector and the RIM 1902G or RIM 1802G. Verify that it leads to the I/O pin of the SIM card connector.
Chapter 6: Interface specification SIM Interface and Test Board integration Radio interface pins This section describes the purpose of each of the 22 lines that comprise the radio interface to the RIM OEM Radio Modem for GSM/GPRS Wireless Networks. Pins 1 to 4 Pins 1 to 4 were introduced to take advantage of the GPRS data network’s underlying GSM voice...
Radio interface pins Pin descriptions Note: The symbol ~ before the label indicates that line is an active low digital signal. Label Description MIC N Analog Microphone Input Negative This is an analog input to the radio. MIC P Analog Microphone Input Positive This is an analog input to the radio.
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While this line is high, any data sent from the computing device to the RIM 1902G or RIM 1802G 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.
Radio interface pins Label Description ~RTS ~Request To Send This 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.
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AT+IPR=<rate> AT command. Secondary Receive This line is an output from the radio modem (for RIM internal use only). Warning: All unused inputs to the radio should be tied to ground, and any unused outputs from the radio should be left disconnected.
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. Turning off the radio The RIM 1902G or RIM 1802G requires a controlled shutdown. You can turn the radio modem off by de-asserting TURNON Data that has been received by the radio modem from the network, but has not been transferred to the computing device, is not saved.
Chapter 6: Interface specification Resetting the radio RIM 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 enables the device to perform a hard reset of the radio modem, which can be useful in some debugging testing situations.
Chapter 7 Antenna selection This section provides information on the following topics: • Antenna terminology • Selecting an antenna • Antenna requirements • Antenna design considerations • Shielding...
At the antenna port, the output power of the RIM 1902G or RIM 1802G can be as high as 1W at 1900 MHz and 1800 MHz, 0.8W at 850 MHz, or 2W at900 MHz. The antenna gain (or loss) results in an increase (or decrease) in this value.
The optimal antenna radiation efficiency is produced by an antenna measuring one wavelength, l. The value of l for the RIM 1902G or RIM 1802G is calculated by dividing the speed of light c = 3 x 10 m/s by the center frequency.
“mirror image” of the antenna beneath the plane. Antenna requirements The antenna system that is used with the RIM 1902G or RIM 1802G has the following minimum requirements: •...
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Antenna design considerations Vertical polarization Because 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, handheld devices, a user-friendly design enables the antenna to be folded out of the way when it is not in use.
RF interference that originates in the computing device to which it is attached. The metal casing also prevents the RIM 1902G or RIM 1802G from emitting RF energy into the computing device and disrupting the computing device’s operation.
Chapter 8 Specifications This section provides information on the following topics: • Power supply and typical current usage • RF properties • Serial communications • Mechanical and environmental properties • Audio • Gain setting • Frequency response (voiceband filter) • Input/output impedance •...
Note: As defined in the GSM specifications, the radio modem’s transmitter can reduce output power when it is near a base station. Serial communications Serial ports 3V asynchronous Link speed 1200 to 115 200 bps RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Mechanical and environmental properties Weight 36 g (1.23 oz), including case Dimensions 42.0 by 67.5 mm (1.65" x 2.66") Thickness 8.4 mm (.33") 22 pin Flexible Printed Circuit (FPC) connector 3V interface connectors 6 pin FPC connector (on-board SIM configuration only) Antenna cable connector MMCX Casing...
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15 ohm (differential) 470 pF (single-ended) maximum 100 pF (differential) Signal to (noise + distortion) ratio Voiceband ADC minimum 69 dB (PGA=0dB) typical 77 dB Voiceband DAC minimum 47 dB (PGA=0dB) RIM OEM Radio Modem for GSM/GPRS Wireless Networks...
Index Numbers radiation efficiency return loss 22-pin interface cable RF exposure requirements connecting selecting illustration shielding 6-pin connector size illustration SMA plug 6-pin interface cable transmission interference connecting transmit interference vertical polarization VSWR AC outlet antenna development, overview connecting the test board arrestor circuits adhesive, industrial AT commands...
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DTR pin size specifications transmitter effective radiated power (ERP) Ground SIM interface pin environmental properties specifications equations return loss headset voltage standing wave ratio (WSWR) connecting equivalent series resistance (ESR) illustrations RIM OEM Radio Modem for GSM/GPRS Networks...
Index 22-pin interface cable 6-pin connector LED indicators antenna MMCX connector loading, firmware radio modem underside SIM test board integration SMA connector magmount antenna impedance mechanical properties industrial adhesive specifications Industry Canada MIC N pin certification MIC P pin Class B compliance microphone/speaker jack input/output impedance, specifications minimum requirements...
Reset SIM interface pin specifications resetting the radio modem test board return loss printed circuit board development equation overview RF properties RIM OEM Radio Modem for GSM/GPRS Networks...
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Index specifications RI pin SIM test board incorporation RIM firmware SIM, interface cable RIM GPRS Radio Modem single board design advantages single-use batteries integration possibilities size, GPRS radio modem models SMA connector overview SMA plug RIM, contacting software development RS-232 interface...
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LED indicators VCC pin microphone/speaker jack voltage on/off switch minimum requirements power supply regulators RS-232 interface SIM card test points workflow, integration test points tie wraps transmit interference zener diodes transmitter, efficiency TRI pin RIM OEM Radio Modem for GSM/GPRS Networks...
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