User Manual and Integrator’s Guide Boomer-III Mobitex OEM Modem Module: BM3-900M Draft Revision 0.
© Wavenet Technology Pty Ltd ACN 079 965 003 Publication No. BM315012WT05 Draft 14th October 2003 This publication is copyright and no part may be reproduced or copied without the prior consent of: Wavenet Technology Pty Ltd. 140 Burswood Rd Burswood, 6100 Western Australia Telephone: Facsimile: E-mail: Web Site: +61 8 9262 0200 +61 8 9355 5622 wavenet@wavenet.com.au www.wavenet.com.au This manual is intended to be used for the operation of Wavenet Technology equipment.
Boomer-III User Manual & Integrator’s Guide__________________________________________________ Contents Contents Introduction ......................................................................................................5 Modem Features ..........................................................................................6 Wireless Applications ...................................................................................7 Developer Support ..................................................
Contents _________________________________________________ Boomer-III User Manual & Integrator’s Guide Appendix A – Guide to Desense ....................................................................75 Noise Sources ............................................................................................76 Receiver Susceptibilities.............................................................................76 Measurement Techniques ......................................................................
Boomer-III User Manual & Integrator’s Guide________________________________________________ Introduction Introduction The Boomer-III OEM Modem Module is a radio packet modem, intended for use on Mobitex 900MHz data communication networks.
Introduction _______________________________________________ Boomer-III User Manual & Integrator’s Guide This manual contains the following major sections: Section 1: Introduction Section 2: The Integrator’s Task Section 3: Installing the Modem Section 4: Modem Test Jig Section 5: Wavenet Software Tools Section 6: Integration Testing In addition useful reference information has been included in the appendices.
Boomer-III User Manual & Integrator’s Guide________________________________________________ Introduction Wireless Applications Wireless applications in which the Boomer-III OEM Modem may be used include the following: Meter Reading The modem can be used to read billing information from intelligent electrical meters and basic disc meters. Data is transmitted wirelessly through a radio network to billing computers.
Introduction _______________________________________________ Boomer-III User Manual & Integrator’s Guide Developer Support A complete developers program is offered by Wavenet to assist integrators in the design, testing and implementation phases of their wireless applications. This includes a developer’s kit, modem software tools, sample source code and prototyping components. Wavenet’s experienced team of RF and software engineers are available to give technical support as required.
Boomer-III User Manual & Integrator’s Guide________________________________________________ Introduction Compliance Statement The Wavenet Boomer-III OEM Modem Module 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. Output is specified at the antenna terminal of this module.
Introduction _______________________________________________ Boomer-III User Manual & Integrator’s Guide Information for Your Safety Please read these safety instructions and the operation instructions provided in this manual before operating the Boomer-III OEM Modem. Safe Use Switch the modem off in areas where radio devices are forbidden, or when it may cause interference or danger.
Boomer-III User Manual & Integrator’s Guide____________________________________________ Integrator’s Task The Integrator’s Task This section provides background information and points out the objectives and tasks of reaching the goal of a successful implementation. Areas of Focus Benefits Serial Port Pass-Through Capability Enables modem diagnostics and software upgrades without the need to disassemble the host/terminal Understanding RF Design Provides the required network coverage.
Integrator’s Task ___________________________________________ Boomer-III User Manual & Integrator’s Guide Plan the Product and Create the Design To plan the product and create the design, perform the following steps: Develop a usage model. Develop a message model. Define a service strategy. Investigate and obtain regulatory approval.
Boomer-III User Manual & Integrator’s Guide____________________________________________ Integrator’s Task support for packet headers, the number of active users on a shared RF channel can directly affect network throughput. Define a Service Strategy The service strategy determines whether the integrated modem is the cause of a user’s problem and sets a policy for keeping the end user operational during repair.
Integrator’s Task ___________________________________________ Boomer-III User Manual & Integrator’s Guide modem, or the host/terminal that is not working as expected? Often it can be a user’s misunderstanding of how to use the product. Regardless, remote troubleshooting is essential to reducing the number of returned products and lowering service costs, particularly if the host/terminal must be disassembled for removal of the modem.
Boomer-III User Manual & Integrator’s Guide____________________________________________ Integrator’s Task Develop and Validate the Hardware To develop and validate the hardware, perform the following steps: Design the hardware platform Consider power supply options Select the source antenna Set up a development test environment Design the Hardware Platform Integrating a wireless modem into a hardware design requires many steps.
Integrator’s Task ___________________________________________ Boomer-III User Manual & Integrator’s Guide evaluation board allows for maximum flexibility in accessing and controlling connections into and out of the modem. Wavenet also provides various software utilities that can help in performing development tests. See “Testing” on page 69.
Boomer-III User Manual & Integrator’s Guide____________________________________________ Integrator’s Task “Desense and EMI” on page 70. In addition, see “Guide to Desense” on page 75. Set Up a Final Test Environment To ensure proper assembly of the final product (antenna properly connected, serial port operational, and so on), perform an end-to-end test that proves the final product can receive and transmit at the required signal levels.
Integrator’s Task ___________________________________________ Boomer-III User Manual & Integrator’s Guide General Precautions Minimise handling of static sensitive modules and components. Wear a grounded anti static wrist strap while handling static sensitive components. Do not bend or stress the modem in any way. Reinsert connectors straight and evenly to avoid causing short and open circuits. ESD Handling Precautions The Boomer-III OEM modem contains components sensitive to ESD (electrostatic discharge).
Boomer-III User Manual & Integrator’s Guide____________________________________________ Integrator’s Task Regulatory Requirements You are required to obtain regulatory approval of products that integrate the Boomer-III OEM wireless modem into a host/terminal. The specific details for achieving regulatory approval vary from country to country.
Integrator’s Task ___________________________________________ Boomer-III User Manual & Integrator’s Guide All certification tests must be made by a qualified laboratory to ensure that the equipment complies with the applicable technical standards. United States of America The Federal Communications Commission (FCC) requires application for certification of digital devices in accordance with CFR Title 47, Part 2 and Part 15.
Boomer-III User Manual & Integrator’s Guide____________________________________________ Integrator’s Task ensure compliance, operations at closer than this distance is not recommended." If an antenna system is used which has an average gain greater than 5dBi then the integrated product must be re-tested as a complete unit and submitted with its own FCC ID.
Integrator’s Task ___________________________________________ Boomer-III User Manual & Integrator’s Guide The FCC does not permit use of an FCC identifier until a Grant of Equipment Authorisation is issued. If you display a device at a trade show before the FCC has issued a grant, the following statement must be prominently displayed: “This device has not been approved by the Federal Communications Commission.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Installing the Modem This section will help you to successfully integrate the Boomer-III OEM Modem into your custom application. When integrating a wireless modem, internal connections and placements are critical to a successful implementation.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide the 50Hz or 60Hz noise that can impair modem operation, depending upon country of use. Other considerations include mobile usage, which typically implies vehicular applications. Some of the design implications of mobile usage include: Resets The design must attempt to eliminate modem resets caused by supply voltage drops while the vehicle is starting. This is very disruptive to the network link.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Proper mounting of the modem requires securely fastening it within the product housing. The mating surface should be flat and ensure a rigid mounting for the modem to minimise vibration to the unit. There should be an adequate supply of airflow to ensure the modem’s temperature limits are not exceeded.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide 20.4mm 14.5mm 14.5mm Molex FPC Connector F006-52893 Pin 1 of the connector is adjacent to the LED window; it is also marked on the housing. The pin assignment of the Data Interface Connectors is shown in the following table.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Data Interface Pin Descriptions Pin Signal Description Signal Reset State 1 DCD Data Carrier Detect Output High Impedance 2 RXD Receive Data Output High Impedance 3 TXD Transmit Data Input 100k pull up to 3V 4 DTR Data Terminal ready Input 100k pull up to 3V 5 GND Ground Ground 0V 6 DSR Data Set Ready Output High Impedance 7 RTS Request to Send Input 100k pull up t
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Modem On/Off Control The modem on/off input line (HOSTPWR_ON) is an active high input signal and is fitted with a 33Ω series resistor for input protection. Internally it is passively pulled low (after the series resistor) to ground and is asserted with a high input signal.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Warning: When the modem is turned off using the HOSTPWR_ON signal and HOST_3.8V power is removed, all other signals connected to the Data Interface Connector should also be turned off or set to 0V otherwise the modem may remain powered on via these signals.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Modem Reset Input The reset input line (HCRESET) is an active low input signal (TTL compatible) and is fitted with a 6.8kΩ series resistor for input protection. Internally it is passively pulled high (after the series resistor) to the supply rail (3V) and is asserted with an actively driven low signal to ground.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Serial Communications Interface The modem communicates with the controller using the Data Interface Port connection interface. The host asynchronous serial interface on the Boomer-III OEM Modem operates at 3V and can be controlled by a wide variety of micro controllers and microprocessors.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Serial Communications Equivalent Circuits Serial Communications Electrical Characteristics Parameter Input Voltage Output Voltage Range Low High 0-3V OR 0-5V 0.8 V (max) 2.0 V (min) 0 – 3V 0.4 V (max) 2.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Status Signal Multi-Function Lines The status lines (SS0 to SS4) have multi-functional capability and may be software configured for specific operation. All the lines may be used as digital input/outputs. SS0/SS1 and SS2/SS3 may be used as a second and third serial communications port respectively. SS2-SS3 may be used to measure analogue input voltages with 10-bit resolution.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide LED Indicators The modem provides three on-board indicators (LED’s), for diagnostic monitoring purposes as well as three modem controllable LED outputs through the Data Interface Connector. On-Board LED Indicators The on-board LED’s are visible through windows in the case of the modem and are defined as below.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation LED Output Lines In addition to the on-board LED’s there are three signal lines (Low Battery, Message Waiting, In-range), which are controllable by the modem for connection to an external LED. These lines also have multifunction capability through software configuration as digital input/outputs or as a Synchronous Peripheral Interface (SPI) port.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide LED Interface Definitions J1 Pin # Signal Description Signal Active State 13 LED0_MSGWTG Message waiting Output Low when message waiting 14 LED1_INRANGE In range Output Low when modem in-range 15 LED2_LOWBAT Low battery Output Low when battery is <3.5V, High when battery is >3.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Selecting & Positioning the Antenna Use this information to assist you in selecting the appropriate antenna to incorporate into your product package. For specific detailed information, Wavenet recommends that you use the expertise of an antenna design engineer to solve individual application concerns.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Cabling demands the same consideration as an internal antenna application. In a typical laptop application, the antenna must be placed as far as possible from a display to avoid deflection. This usually causes a deep null in radiation patterns.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation The power output of the Boomer-III OEM Modem is nominally 2W at the antenna port. The antenna gain or loss will affect the radiated value. Connecting the Antenna The Boomer-III OEM Modem Module provides an MMCX RF connector located at the top of the unit, to attach to the antenna cable.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide The Boomer-III modem module operates on a packet data network which sets the timing of most aspects of the RF signalling protocol. The shortest transmit event over which the Boomer-III modem has control is a transmit transaction which is comprised of a series of transmit pulses.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation The algorithm for the Source Based Time Averaging transmit control and the relevant parameters are given below: Idle_Time = Duty_Factor * Transmit_Duration Duty Factor = (100 – Duty_Cycle%) / Duty_Cycle% Duty_Cycle% = Preset limit for SAR compliance No Any data to transmit? Yes Has the transmit Idle_Time expired? Buffer data Decrement Idle_Time Yes No Wait for data Decrement Idle_Time Transmit d
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Supplying Power The Boomer-III OEM Modem must be provided with a clean power source capable of delivering bursts of high current. The modem draws its power in bursts. The power required changes rapidly depending on whether the modem is transmitting, receiving or on standby. Ratings The power supply requirements are: Voltage: 3.8V (3.4 to 4.8V range) Transmit Current: 1.6A maximum (2.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation The power supply should have good regulation with < 200mV drop at 2.2A. Adequate supply decoupling (10,000uF min.) is added at terminal connector to reduce ripple and smooth supply voltage steps. The power supply be capable of supplying non-ideal current consumption conditions of up to 2.2A for up to TBD seconds and with a duty cycle (set by data usage) ~ 30% maximum.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Power Profile The modem’s power consumption profile depends on the usage and the network configuration of the Power Save protocol. For example, the following numbers present a typical profile for the Boomer-III modem based on reasonably heavy usage and assuming a 3.8V supply current: (Power Save Mode = Maximum) 80 % Sleep @ 4.4 mA typical 19.9 % Receive @ 76 mA typical 0.1% Transmit @ 1.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Power Control The host/terminal provides the supply rail (HOST 3.8V) to the modem through the Data Interface Connector. The host/terminal turns the modem ON by asserting the HOSTPWR_ON signal. The host/terminal may request the modem to turn OFF by de-asserting the HOSTPWR _ON or by sending a specific MASC command across the serial interface.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Power-Up Timing Diagram Optional Delay HOST 3.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Power Down Sequence The host/terminal may request the modem to turn OFF by de-asserting the HOSTPWR _ON or by sending a specific MASC command across the serial interface. For the modem to turn OFF after an MASC request the HOSTPWR_ON signal must be de-asserted. Warning: The power supply rail must be maintained during a power down sequence or else memory may be corrupted.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Power Down Diagram Callouts 1 HOSTPWR_ON is de-asserted from the host/terminal to the modem. Important: The power rail must be present for up to ten seconds (typically two seconds) after HOSTPWR_ON is de-asserted for the deregistration process to complete orderly. 2 The modem starts the soft shutdown process. The battery status indicator pulses quickly until the shutdown steps are complete.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Internal impedance of 25-30µΩ per 1.2V cell Typical cell voltages are 1.2V, with multiple cells used to obtain higher operating voltages Can withstand high current pulses, which are characteristic of packet data applications Typical charge method is −∆ V (known as negative delta voltage), which involves charging the battery while looking for the battery voltage to peak.
Installation________________________________________________ Boomer-III User Manual & Integrator’s Guide Availability is an issue, as most suppliers do not sell cells, but force customers into particular solutions through their battery pack designs. Purchasing cells in an effort to design your own battery pack may be problematic due to cell lead times. Li-ion does not exhibit the memory effect and is unaffected by partial discharging-charging cycles Internal impedance of 100-150mΩ per 3.6V cell.
Boomer-III User Manual & Integrator’s Guide_________________________________________________Installation Messaging model To determine the required battery capacity for your product, you need to define the messaging model for your target market.
Modem Test Jig ___________________________________________ Boomer-III User Manual & Integrator’s Guide Copyright Wavenet Technology © October 2003 52 BM310012WT05
Boomer-III User Manual & Integrator’s Guide____________________________________________ Modem Test Jig Using the Modem Test Jig The Boomer-III modem may be used with the Boomer-II Test Jig which provides RS-232 serial interface ports between a PC and the modem. It is designed to enable you to quickly interface the Boomer-III to a standard PC (through a COM port) or a terminal device with an RS-232 serial port.
Modem Test Jig ___________________________________________ Boomer-III User Manual & Integrator’s Guide Exploring the Boomer-II Test Jig The test jig comprises the following components: DC Jack Input Supply On/Off Switch 3 RDW Header connector VCC test pin 3.
Boomer-III User Manual & Integrator’s Guide____________________________________________ Modem Test Jig Port 2 / SPY PC Connector DB9 connector used for two purposes depending upon the settings of the jumper switches located just behind the connector on the PCB. If the jumpers are used to connect the centre column to the right hand outer column (TX, RTS etc), then the port acts as a spy connection for the data between the PC and the modem via the PC connector. An analyser program such as “spy.
Modem Test Jig ___________________________________________ Boomer-III User Manual & Integrator’s Guide Audio Out Connector for monitoring an audio output. Used to monitor base band signal, BIT Error Rate (requires a PER test jig), receiver and demodulation. Warning: Must use a high impedance monitor, 100kΩ. Audio In Connector for monitoring an audio input. Used to monitor modulation and transmission. Warning: Must use a high impedance monitor, 100kΩ.
Boomer-III User Manual & Integrator’s Guide____________________________________________ Modem Test Jig Initial Calibration Without connecting a Boomer-III OEM Modem to the Test Jig, initially check the calibration of the on-board voltage regulator. (This regulator supplies the RS232 converter and other on-board circuitry only. It does not supply power to the modem). 1. Connect the centre pin of the DC jack to the +3.8V power supply with 2A capability and the external pin to the ground. 2.
Modem Test Jig ___________________________________________ Boomer-III User Manual & Integrator’s Guide c. Press down the lock lever. Note: If the cable has been partially inserted, or out of alignment, the lock lever will not engage. Should this occur, remove the cable (see below) and repeat steps a-c. Use the following procedure to remove the cable from the FPC connector. a. Lift up the lock lever of the FPC connector by flipping it up with the nail of your thumb or index finger. Lock Lever b.
Boomer-III User Manual & Integrator’s Guide__________________________ Wavenet Software Development Tools Software Development Tools Wavenet SDK Mobitex networks allow wireless communication and are installed in many different countries around the world. The Wavenet Software Development Kit (SDK) has been developed to facilitate development of applications for these networks by providing a simple program interface for communicating with the network devices.
Wavenet Software Development Tools__________________________ Boomer-III User Manual & Integrator’s Guide Wavenet Commander The radio service utility software “Wavenet Commander” enables a user to exercise and configure Wavenet Modems. This software runs under Windows 95, 98, NT, or 2000. Wavenet Commander interfaces with the Boomer-III OEM Modem via a PC’s communications port and the Test Jig’s PC port using an RS-232 cable.
Boomer-III User Manual & Integrator’s Guide__________________________ Wavenet Software Development Tools Operations Wavenet Commander display is broken up to four quadrants as follows: Upper-Left Upper-Right “Modem Info” Tree View “Modem Info” Property View The modem Type and display options are represented as Tree view. Use the mouse to select the following modem information views. Displays the associated property pages as selected by the quick link in the tree view.
Wavenet Software Development Tools__________________________ Boomer-III User Manual & Integrator’s Guide Ensure the test jig with the modem is powered up and connected (Serial cable from PC port of the Test Jig to your PC’s Communication port) and the above the communication settings are correct for your set-up. Modem Info Tree View ModemInfo uses the MASC API to interface to the Mobitex network.
Boomer-III User Manual & Integrator’s Guide__________________________ Wavenet Software Development Tools TTY Control View The TTY control View allows the user to perform the following: • Display detailed commands and responses. The commands to the modem and the responses from the modem are displayed in Hex format. A maximum of 200 bytes is displayed per command or response. • Allows the user to enable / disable the wc.log file.
Wavenet Software Development Tools__________________________ Boomer-III User Manual & Integrator’s Guide Wavenet Application Loader The Application Loader software is used to upgrade the resident software installed on your Wavenet OEM modem. For optimum performance ensure that you are using the latest application version. This appendix explains the procedure for updating the Application Loader software and has a troubleshooting section to assist with any problems.
Boomer-III User Manual & Integrator’s Guide__________________________ Wavenet Software Development Tools Note: The message shown above will appear if you are attempting to upgrade using ApploaderM408.exe with a BM3 modem. Select the appropriate com port on your PC that the modem is connected to. Click the Download Application button to download the latest version. 7. The following screen is typically displayed. Displays the current version of Application software on your modem.
Wavenet Software Development Tools__________________________ Boomer-III User Manual & Integrator’s Guide 13. A message is then displayed in the status bar, informing you that that the application software on the modem is up to date. 14. Click the modem. to exit the program. This will automatically reset Troubleshooting You shouldn’t encounter any problems updating the Application Loader software, however the following messages may appear.
Boomer-III User Manual & Integrator’s Guide__________________________ Wavenet Software Development Tools This message (or similar) will appear if you have attempted to upgrade your modem with the incorrect Application Loader file. The letter preceding the three numerical characters at the end of the Application loader file name denotes which modem the file is appropriate for, i.e. BM3 for the Boomer-III OEM modem.
Wavenet Software Development Tools__________________________ Boomer-III User Manual & Integrator’s Guide Copyright Wavenet Technology © October 2003 68 BM310012WT05
Boomer-III User Manual & Integrator’s Guide___________________________________________________ Testing Integration Testing This section contains a product development checklist of parameters to check, requirements to meet, and standards of performance to evaluate. You can use these process checks and functional test procedures to fully qualify that the Boomer-III OEM Modem has been integrated properly into the host/terminal.
Testing __________________________________________________ Boomer-III User Manual & Integrator’s Guide the modem and host/terminal. Ensure that the following hardware integration issues are evaluated: RF Immunity RF transmissions of the modem do not interfere with operation of the host/terminal. Electrical Signaling Power sources and interface are functionally compatible between the host/terminal and the modem.
Boomer-III User Manual & Integrator’s Guide___________________________________________________ Testing modem . The ability to turn on and off the various circuits in the host/terminal allows for the identification and analysis of the host/terminal components that are responsible for desense. This approach to desense troubleshooting can greatly speed up the OEM integration effort. For more detailed information about desense, refer to “Guide to Desense” on page 75.
Testing __________________________________________________ Boomer-III User Manual & Integrator’s Guide Application Software Tests need to verify the communications links between the host/terminal and the modem and between the modem and the network, as follows: Software Driver Configuration Ensure that the host/terminal can enable the modem serial port to permit the host/terminal and modem to communicate. This test verifies that the driver software functions well and is configured properly.
Boomer-III User Manual & Integrator’s Guide___________________________________________________ Testing Effective tests provide a systematic, positive acknowledgment from each of the network components.
Testing __________________________________________________ Boomer-III User Manual & Integrator’s Guide Copyright Wavenet Technology © October 2003 74 BM310012WT05
Boomer-III User Manual & Integrator’s Guide______________________________ APPENDIX F – Guide to Desense Appendix A – Guide to Desense When you integrate wireless data radio technology into computing and telemetry devices, you must consider hardware issues related to RF emissions. For example, you must address the technical aspects of enabling a wireless RF device as an integrated peripheral in a host/terminal, such as RF performance and inter-operability with the host/terminal.
APPENDIX F – Guide to Desense _____________________________ Boomer-III User Manual & Integrator’s Guide Consistent and reliable reception occurs when a safety margin dictated by co-channel rejection is maintained. For example, if the co-channel rejection is 10dB, all unwanted signals must be 10dB below the receiver’s sensitivity level. Some modems and networks have different rejection levels. Use the rejection level appropriate for your modem (typically –10dB).
Boomer-III User Manual & Integrator’s Guide______________________________ APPENDIX F – Guide to Desense Indirectly by recording the emission level from the host/terminal and then calculating the effect on the modem. Directly by using packet error rate testing off air. Testing directly is preferred method because it is more of a system test. The test must be non-intrusive.
APPENDIX F – Guide to Desense _____________________________ Boomer-III User Manual & Integrator’s Guide over driven by other RF signals, such as FM radio stations. Any spikes that appear might cause desense problems. The indirect method cannot account for characteristics of the data protocol and is less effective. Also, the bandwidth of the noise source is important. If the source is narrow-band, it has less effect than one occupying the entire channel bandwidth.
Boomer-III User Manual & Integrator’s Guide______________________________ APPENDIX F – Guide to Desense Applications by David A Weston. The publisher is Marcel Dekker, Inc. 270 Madison Avenue, New York, NY 10016. Any well written text on EMI control should cover the design of shielded enclosures. Components of the Shield Design To be effective, the shield design must incorporate: A highly conductive shielded enclosure that encapsulates all of the active circuitry.
APPENDIX F – Guide to Desense _____________________________ Boomer-III User Manual & Integrator’s Guide Computing devices have many more than one source Each source must be identified and controlled. This identification is at times difficult. The host/terminal and modem must communicate the problem at hand to attempt to correct it. This capability is not supported by the Boomer-III OEM modem.
Boomer-III User Manual & Integrator’s Guide______________________________ APPENDIX F – Guide to Desense device if it is within 30 meters of the device, assuming that an emission exists at the channel frequency of the radio. Networks can assist in the desense problem by offering more than one channel frequency at which to operate. If the radio encounters interference on a channel, it can then roam to another.
APPENDIX F – Guide to Desense _____________________________ Boomer-III User Manual & Integrator’s Guide The impact of the RF fields from the wireless device transmitter on host/terminal operation The latter consideration is not a significant problem. If RFI is assessed properly, it is usually corrected with little effort and cost. Because of the need for system coverage, the host/terminal EMI interaction with the radio receiver can be a significant and often elusive problem to characterize and correct.
Boomer-III User Manual & Integrator’s Guide_______________________ APPENDIX G - Numeric Conversion Chart Appendix B - Numeric Conversion Chart Binary/Octal/Decimal/Hex/C/ASCII Conversion Table Binary 00000000 00000001 00000010 00000011 00000100 00000101 00000110 00000111 00001000 00001001 00001010 00001011 00001100 00001101 00001110 00001111 00010000 00010001 00010010 00010011 00010100 00010101 00010110 00010111 00011000 00011001 00011010 00011011 00011100 00011101 00011110 00011111 00100000 00100001 00100
APPENDIX G - Numeric Conversion Chart ______________________ Boomer-III User Manual & Integrator’s Guide Copyright Wavenet Technology © October 2003 84 BM310012WT05
Boomer-III User Manual & Integrator’s Guide__________________________________APPENDIX H - Specifications Appendix C – Boomer-III Specifications Physical Properties Weight < 75g Size (L x W x H) 68mm x 42mm x 8mm Communication Protocols Modem to radio network protocol Mobitex Modem to host protocol MASC 9600 bps 7 data bits, even parity, 1 stop bit Environmental Conditions Operating temperature -30°C to +60°C Storage temperature -40°C to 70°C Relative Humidity 0 to 95% Ports Data Interface Por
APPENDIX H - Specifications_________________________________ Boomer-III User Manual & Integrator’s Guide Synthesiser Frequency range 890 – 902MHz Channel spacing 12.5kHz Frequency Error ±0.8ppm (750Hz) Transmitter Frequency range 896 – 902MHz Channel spacing 12.5kHz Data rate 8 kbps Deviation 2kHz Modulation GMSK RF output power (at 50Ω antenna port) 2.
Boomer-III User Manual & Integrator’s Guide______________________________________ APPENDIX I - Glossary Appendix I - Glossary ACK ADC ALC ANSI AOC ASIC ATE BGA BER BNC Bps BSC CCR CHRONOS CLK CMOS CNTL COM CPU CQA CNTL CSA DAC DB DBc DBm DCD Debounce Desense DISC DOS DTE DTR DTU DVM EEPROM EIA EMA EMI EPC EPROM ERP ESD ESN FCC FET FIFO FNE FPC BM310012WT05 Acknowledgment Analog-to-digital converter Automatic level control American National Standards Institute Automatic output control Application-specific
APPENDIX I - Glossary _____________________________________ Boomer-III User Manual & Integrator’s Guide FracN FRU FSK GaAs GND GPIB GTEM HCT Host HP I/O IB IC Inbound IP IR LC LED Li-ion LNA MAN MASC MFR MPS NAK NatSim NiCad / NiCd NiMH NPN NSI OB OEM op-amp OSMT Outbound PCA PCB PC Card PCMCIA PDA PIC PLL p/n PMIT POST Ppm QFP R&D RAM Fractional division synthesizer IC Field-replaceable unit Frequency shift keying Gallium arsenide, a semi-conducting material Ground A type of ATE interface Gigahertz trans
Boomer-III User Manual & Integrator’s Guide______________________________________ APPENDIX I - Glossary Rayleigh RC RD-LAP RF RFI RGxxx RMA RNC RPM RS-232 RSSI RTU Rx SAR Schottky diode SDK SINAD SMA SMB SNR SPDT SPI SRAM TBD TNC Transorb TTO Tx UART UL VCC VCO VDD Vpp VSWR Wireline XIP ZIF BM310012WT05 A measure of multi-path fading depth of a signal Resistor-capacitor Radio Data-Link Access Procedure Radio frequency Radio-frequency interference Cabling designation number Return material authorization R
APPENDIX I - Glossary _____________________________________ Boomer-III User Manual & Integrator’s Guide Copyright Wavenet Technology © October 2003 90 BM310012WT05
