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Introduction: DataTAC network technology

Integrator’s Guide – RIM 801D OEM Radio Modem

4

DataTAC Data System Station (DSS) base site equipment is located at
various remote sites in the operational area of coverage and provides the RF
link between the DataTAC infrastructure and end user devices. They convert
the host data messages into the RD-LAP radio channel protocol for
transmission to the user devices and reverse the process on the return
connection. They also allow device roaming between base site coverage
areas in a seamless manner completely transparent to the end user.

Содержание 801D

Страница 1: ...Integrator s Guide RIM 801D OEM Radio Modem version 1 0...

Страница 2: ...ademarks of 3M Corporation Warning This document is for the use of licensed users only Any unauthorized copying distribution or disclosure of information is a violation of copyright laws While every e...

Страница 3: ...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 inst...

Страница 4: ......

Страница 5: ...801D 8 3 Power requirements 11 Load specifications 11 Automotive supplies 13 Rechargeable batteries 13 Single use batteries 14 Plug in supplies 15 Connecting the power source 16 4 Serial interface spe...

Страница 6: ...s Protocol RAP 35 Summary 41 7 Interfacing and controlling the RIM 801D 43 Interfacing to an RS232 device 43 Controlling the RIM 801D 44 Serial port interface 44 Specifications 49 Glossary of terms 51...

Страница 7: ...wer Battery Supply 24 Figure 7 Connecting an antenna 28 Figure 8 Different MMCX Connector Orientations 29 Figure 9 Example SMA Jack Connectors 30 Figure 10 RAP Frame Structure 37 Figure 11 Sending dat...

Страница 8: ......

Страница 9: ...rotocols Throughout the guide there are suggestions and precautions that will ease the implementation of a wireless communication solution Attention is drawn to these through the use of the two symbol...

Страница 10: ......

Страница 11: ...he 800 MHz frequency range the RIM 801D is compatible with DataTAC wide area wireless data communication networks Powerful and efficient transmitter The RIM 801D provides reliable transmit efficiency...

Страница 12: ...e range of operation of the RIM 801D Low power requirements Battery life is a critical issue for portable devices end users want long lasting devices without heavy battery packs The RIM 801D sets a ne...

Страница 13: ...g system alarms remote diagnostics and redundant back up links ensure network reliability and availability The key components of the network infrastructure include the Network Management Center NMC Ar...

Страница 14: ...onal area of coverage and provides the RF link between the DataTAC infrastructure and end user devices They convert the host data messages into the RD LAP radio channel protocol for transmission to th...

Страница 15: ...radio modem within an application Environmental properties case dimensions cabling connectors and mounting suggestions are presented Environmental properties The RIM 801D OEM Radio Modem is designed...

Страница 16: ...the radio modem Within the case of the modem the smaller components are mounted on one side and the larger components on the other This separation of large and small components results in a case with...

Страница 17: ...Mechanical specifications and mounting needs Physical properties RIM 801D OEM Radio Modem Integrator s Guide 7 Figure 1 Top view of RIM 801D Figure 2 Side view of RIM 801D...

Страница 18: ...01D is pre tinned steel or stainless steel with a thickness of 0 010 0 25 mm The following information is presented as a guide but applications can vary considerably Please make sure that the mounting...

Страница 19: ...oduct manufacturer might later wish to do so The choice of reclosable fastener is governed by two factors The first is the strength of the closure The fastener should ensure that the closure will last...

Страница 20: ...is in fact held in place quite securely It is necessary to choose the adhesive backing on the fastener strips rubber adhesive acrylic adhesive or VHB so that it is appropriate to the attaching surface...

Страница 21: ...the radio We recommend protecting the radio from reverse polarity by attaching a Schottky diode in series with the Radio Modem s power cable if there is any danger of reverse connection A 1N5822 is s...

Страница 22: ...pedance recommended external 1 5 max Recommended operating voltage range 7 0 to 9 0 Volts Load Profile Express mode typical 60 mA Standby mode typical 12 mA Transmit current drain typical 1 5 W to ant...

Страница 23: ...suitable for operating the RIM 801D radio modem Supplying the RIM 801D with more than 10 5 volts will damage the modem Rechargeable batteries For battery operated applications requiring a wide operat...

Страница 24: ...ests was 1 25 Amps In normal operation the transmitter will draw less than 1 Amp average Number of 1 Second 1 Kbyte Transmit Cycles Before 6 0V Cuttoff Cycles 0 500 1000 1500 2000 2500 6 AA NiCd MPT P...

Страница 25: ...a supply capable of providing 8 volts and 1 5 amps peak current This can be accomplished by employing a 12 volt 1 5 amp peak 1 0 amp continuous unregulated power source and adding an 8 volt regulator...

Страница 26: ...value of 20 volts and be placed on the supply side of the regulator circuit Connecting the power source Whatever the power source it must be connected to the RIM 801D through the power input pins on...

Страница 27: ...irectly to a micro controller or through a UART to a microprocessor data bus Signal specifications Standard 5V interface Outputs Output High Voltage 10 A 4 5 Volts Min Output Low Voltage 10 A 0 4 Volt...

Страница 28: ...on off signals are carried on a flat 14 conductor flexible printed circuit FPC cable which can plug into a matching connector An appropriate 4 14 pin cable is available from Molex Canada part number 8...

Страница 29: ...6 DSR Radio Low Data Set Ready output from Radio to Host Internally connected to PIN 4 7 RTS Terminal Low Request to Send input to Radio from Host 8 CTS Radio Low Clear to Send output from Radio to H...

Страница 30: ...ce with an impedance of 20 k or lower for operation at high baud rates This line is held low through a 20 k resistor when the radio is off The idle no data state of this line is high DTR Data Terminal...

Страница 31: ...ates it is ready to receive data from the Host When this line is high any data sent from the Host to the Radio may be lost This line will be low from inside the radio modem with an impedance of at lea...

Страница 32: ...e unit is ready to receive data but if CTS is low and ONI is low then the radio is not ready to receive data because it is off When ONI is low all inputs to the radio should be held low or disconnecte...

Страница 33: ...oo low for proper operation Turning the radio OFF To turn the RIM 801D off the software should de assert the TURNON line by setting it low The radio will then begin shutdown operations All inputs to t...

Страница 34: ...ked Shutdown and Turnoff are not connected to the RIM 801D radio modem but to the processor of the embedded system If no processor is present the Turnoff line can be tied to the RIM 801D s Turnon and...

Страница 35: ...Inc Please see Appendix II for contact information Research In Motion Limited can also provide antenna design services Antenna requirements The RIM 801D OEM Radio Modem transmits on frequencies betwe...

Страница 36: ...efficiency Impedance mismatches can be due to cable connections cable lengths and imperfections in the cables and connectors The mismatch causes some of the radio frequency energy to be reflected bac...

Страница 37: ...designer must carefully consider the environment in which the device will be used There is no single correct answer as embedded systems can vary significantly Incorporating the antenna is an integral...

Страница 38: ...to an antenna with a suitable low loss matching cable with an impedance of 50 Connecting directly to the RIM 801D On one corner of the RIM 801D is an MMCX connector to which an antenna cable is attach...

Страница 39: ...e direction of the different modem connectors see Figure 8 or an antenna cable with a right angle MMCX connector can be fixed to the RIM 801D to allow the cable to rotate 360 along the face long or sh...

Страница 40: ...the kit For best results the antenna should be connected directly to the antenna cable If an extension cable is required it should be low loss as short as possible and have an impedance of 50 It is i...

Страница 41: ...tached The case also prevents the RIM 801D from emitting RF energy into the computing device and disrupting the computing device s operation The antenna must be positioned in such a way that the radia...

Страница 42: ......

Страница 43: ...re the radio modem is physically located close to the host device RAP is a scaleable protocol that is easy to implement it uses only 1 to 3 K of program storage RAP helps application developers simpli...

Страница 44: ...ong to up to 16 Group LLIs which allows it to receive a copy of all data sent to the Group SDU Types DataTAC defines many different SDU types If you have looked into the DataTAC Open Protocol Specific...

Страница 45: ...me contains start and end characters When the radio modem and host system exchange an NCL frame considerable handshaking is taking place in order to ensure reliable transfer over the serial link The D...

Страница 46: ...switch to NCL mode RIM has included both protocols on the RIM 801D to maintain backward compatibility with existing applications RAP implementation assumptions As a communication protocol RAP was crea...

Страница 47: ...als the beginning of a RAP frame to the RIM 801D radio modem The frame type indicates which one of the 18 different RAP frame types is being used The frame type determines the meaning of the data that...

Страница 48: ...serts into the DATA field of RAP frame Only the SDU is sent over the DataTAC wireless network RAP transmit frame Transmit SDU 0xFB 0xEA 0xD9 0x9D 0xAE 0xBF Data SDU Header Data User data SDU 0 0 0 XYZ...

Страница 49: ...l enter power save operating mode as soon as it is able Express mode The radio will enter express operating mode as soon as it can Turn transmitter off The radio will abandon any transmit attempt and...

Страница 50: ...to turn off the receiver and transmitter Any transmit attempt will be abandoned The radio sends a Radio status reply with the Receiver Ready and Transmitter On status bits cleared Request system iden...

Страница 51: ...col that provides for the reliable transfer of information across the serial link connecting the RIM 801D to the host device This data can have different meanings depending on the frame type in use Fo...

Страница 52: ......

Страница 53: ...arting points for more complex designs Interfacing to an RS232 device The RIM 801D serial interface operates at HCMOS electrical levels making it compatible with many existing system designs In most c...

Страница 54: ...ler in Figure 13 The 8051 is configured with 32 K of ROM 256 bytes of RAM 4 lines to the RIM 801D 28 general purpose control lines that can be used for your control functions Port 0 is Open Drain and...

Страница 55: ...Interfacing and controlling the RIM 801D Serial port interface 45 RIM 801D OEM Radio Modem Integrator s Guide RIM 801D Figure 12 Simple PC RS232 Interface...

Страница 56: ...for your control functions 87C51FC Intel PB RST TD RST TOL ST DS1232 Dallas Semi or MAXIM Equiv VCC VCC VCC GND GND 11 059MHz GND GND 30pF 22pF GND 6 RD 3 7 WR 3 6 T1 3 5 T0 3 4 INT1 3 3 INT0 3 2 TX...

Страница 57: ...Serial port interface 47 RIM 801D OEM Radio Modem Integrator s Guide RIM 801D Figure 14 8250 Serial Port Interface...

Страница 58: ......

Страница 59: ...1 5 W nominal max transmit power at antenna port Receive frequency 851 870 MHz Receive sensitivity 113dBm RD LAP 118dBm MDC 4800bps MDC FSK 19 2 kpbs RD LAP 4FSK RRC FCC Parts 15 90 Industry Canada R...

Страница 60: ...case Footprint 3 5 x 2 6 87 5 x 66mm Thickness 0 3 to 0 38 7 5 to 9 6mm Power connector 2mm pitch Wire to Board Header Molex 53015 0210 mates to Molex 51004 0200 TTL level serial connector 14 pin FPC...

Страница 61: ...Native Control Language The link layer protocol exchanged via an asynchronous full duplex serial channel between a data terminal or computing device and the RIM 801D OEM Radio Modem MMCX The connecto...

Страница 62: ...ot confuse this with radioactive particle emissions caused by nuclear reactions RAP Radio Access Protocol An alternative to the NCL protocol found on the RIM 801D Provides simpler implementation and f...

Страница 63: ...Taiwan DataTAC Antennas Austin Antenna USA DataTAC Antennas Huber Suner USA Canada Straight MMCX connectors Part 11MMCX 50 2 1C 111 Right angle MMCX connectors Part 16MMCX 50 2 1C 111 EZ Flex 405 ant...

Страница 64: ...ACOM USA SMA jack connectors for flexible cable Straight Cable Jack Part 2032 5007 02 RG 142 SMA jack connectors for flexible cable Bulkhead Feedthrough Cable Jack Part 2034 5004 02 RG 142 SMA jack co...

Страница 65: ...Tel 886 3 3223636 8 Fax 886 3 3223639 ARDIS Tel 1 800 494 1732 Tel 1 847 913 1215 Fax 1 847 913 1453 Austin Antenna USA Tel 1 603 335 6339 Fax 1 603 335 1756 Huber Suner USA Tel 1 802 878 0555 Fax 1...

Страница 66: ......

Страница 67: ...ntenna 28 serial 18 51 D DataTAC 51 network components 3 network technology 3 transmission rates 3 DSS 4 Dual Lock 9 E Embedded system 51 environmental properties 5 H Humidity level 5 I Interface abou...

Страница 68: ...batteries 13 Protocol support 33 R RAP error checking 38 frame structure 37 frame types 38 introduction 35 RD LAP 3 Reliability noise immunity 2 RIM 801D battery life 2 controlling 44 features 1 phys...

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