OKKNMX910Mobitex Transmitter Module

NMX910 Technical Notes OEM Interface Guide Issue:1.6 Last Update: 19/04/99 Author:Barry Hay DCC# COPY# FILE Unassigned REVISION CONTROLLED DOCUMENT NO UNAUTHORISED COPYING Copyright © 1999 Nomadic Communications ACN 056 637 453 All rights reserved. No part of this document may be reproduced or copied in any form by any means (graphic, electronic or mechanical, including photocopying or recording by any other information retrieval system) without the prior written permission of Nomadic Communications. The information contained in this document is commercial-in-confidence to Nomadic Communications and is subject to non-disclosure to any other party. Distribution of part or all of this document to parties other than only authorised recipients by Nomadic Communications is strictly prohibited. Nomadic Communications A.C.N. 056 637 453 Unit 6, 27 - 33 Thornton Crescent Mitcham, Victoria, Australia 3132. Box 506 Eastern MC Victoria, Australia 3110. Ph: 03 9873 7988 (Intl. +61 39873 7988) Fax: 03 9873 8911 (Intl. +61 39873 8911) NMX910 OEM GuideOEM Interface Guide Commercial in confidenceii Nomadic Communications Approvals Issue Technical Approval Project Approval 1.4Mike HamiltonNoel Diviney Record of Issue(s) IssueIssued byDateNature of Amendment(s) 1.0AH19.05.98Draft release 1.1AH3.07.98Revised for BBR605 / RF400302 1.2AH10.07.98q Signal naming convention changed to improve meaning q Document rearranged to improve readability q LED pins described q Design notes updated 1.3AH29.07.98Added section – Special Notes 1.4BH18.11.98Revised for related Mobitex document references RF Power vs Vrad issues 1.5BH12.01.99Revised For NMX900 Preliminary Issue 1.6BH03.05.1999Marketing Name Change to identify Production Release Added power requirements template Added discussion of Human Exposure to Radiofrequency Electromagnetic Fields NMX910 OEM GuideOEM Interface Guide Commercial in confidenceiii Nomadic Communications Contents Approvals.........................................................................................................................................ii Record of Issue(s)............................................................................................................................ii Contents..........................................................................................................................................iii 1 Introduction...................................................................................................................................4 1.1 Scope......................................................................................................................................4 2 Special Notes................................................................................................................................5 3 External Interface..........................................................................................................................6 3.1 LED Configuration....................................................................................................................7 4 Modes of Operation......................................................................................................................7 4.1 Application of power.................................................................................................................8 4.2 Network Contact.......................................................................................................................8 4.3 Mode Change...........................................................................................................................8 4.4 Shutdown.................................................................................................................................9 4.5 Removal of power....................................................................................................................9 5 NMX910 RECOMMENDED POWER SUPPLY REQUIREMENTS.................................................10 6 Human Exposure to Radiofrequency Electromagnetic Fields..................................................12 7 Housing Dimensions..................................................................................................................13 8 Technical Specifications............................................................................................................14 Disclaimer................................................................................................................................14 Overview..................................................................................................................................14 Key Features............................................................................................................................14 Approvals.................................................................................................................................14 NMX910 OEM GuideOEM Interface Guide Commercial in confidence4 Nomadic Communications 1 Introduction The NMX910 Radio Packet Modem provides access to MOBITEX networks using a standard serial communications interface and is designed for integration into OEM type products (the OEM Device). OEM designers are primarily interested in the electrical and functional characteristics of the NMX from a “black-box” frame of reference. To this end, the NMX can be considered as a device with two ports; the External Interface and the Antenna Port. The Antenna Port provides the RF interface between the NMX radio and an external antenna. The External Interface provides all external control signals, data communications and power supply lines to the NMX through a predefined connector at the OEM Device (see section 3 below). When considering the integration of the NMX910 into an OEM design the designer should provide for the following: q EIA-232 serial communications port 7bit, Even Parity, 1 Stop bit (ie. TXD, RXD, …

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NMX910 Technical Notes OEM Interface Guide Issue:1.8 Last Update: 10 th September 1999 Author:Barry Hay DCC# COPY# FILE Unassigned REVISION CONTROLLED DOCUMENT NO UNAUTHORISED COPYING Copyright © 2001 Nomadic Communications ACN 056 637 453 All rights reserved. No part of this document may be reproduced or copied in any form by any means (graphic, electronic or mechanical, including photocopying or recording by any other information retrieval system) without the prior written permission of Nomadic Communications. The information contained in this document is commercial-in-confidence to Nomadic Communications and is subject to non-disclosure to any other party. Distribution of part or all of this document to parties other than only authorised recipients by Nomadic Communications is strictly prohibited. Nomadic Communications A.C.N. 056 637 453 Unit 6, 27 - 33 Thornton Crescent Mitcham, Victoria, Australia 3132. Box 506 Eastern MC Victoria, Australia 3110. Ph: 03 9873 7988 (Intl. +61 39873 7988) Fax: 03 9873 8911 (Intl. +61 39873 8911) NMX910 OEM GuideOEM Interface Guide Commercial in confidenceii Nomadic Communications Approvals Issue Technical Approval Project Approval 1.4Mike HamiltonNoel Diviney Record of Issue(s) IssueIssued byDateNature of Amendment(s) 1.0AH19.05.98Draft release 1.1AH3.07.98Revised for BBR605 / RF400302 1.2AH10.07.98
Signal naming convention changed to improve meaning
Document rearranged to improve readability
LED pins described
Design notes updated 1.3AH29.07.98Added section – Special Notes 1.4BH18.11.98Revised for related Mobitex document references RF Power vs. Vrad issues 1.5BH12.01.99Revised For NMX900 Preliminary Issue 1.6BH03.05.1999Marketing Name Change to identify Production Release Added power requirements template Added discussion of Human Exposure to Radio frequency Electromagnetic Fields 1.7BH30.06.1999Added New Section ”Notes For Application Developers” 1.8BH10.09.1999Revisions added per notes from BellSouth. Added discussion on regulatory issues. NMX910 OEM GuideOEM Interface Guide Commercial in confidenceiii Nomadic Communications Contents Approvals............................................................................................................................................... ii Record of Issue(s) ................................................................................................................................. ii Contents................................................................................................................................................ iii 1 Introduction ........................................................................................................................................ 4 1.1 Scope ............................................................................................................................................ 4 2 Special Notes...................................................................................................................................... 5 3 External Interface ............................................................................................................................... 6 3.1 LED Configuration ......................................................................................................................... 7 4 Modes of Operation ........................................................................................................................... 7 4.1 Application of power ...................................................................................................................... 8 4.2 Network Contact............................................................................................................................ 8 4.3 Mode Change................................................................................................................................ 8 4.4 Shutdown ...................................................................................................................................... 9 4.5 Removal of power ......................................................................................................................... 9 5 NMX910 Recommended Power Supply Requirements ................................................................ 10 6 Notes For Application Developers ................................................................................................. 12 7 Regulatory Issues. ........................................................................................................................... 13 7.1 Class of Operation....................................................................................................................... 13 7.2 Antenna ....................................................................................................................................... 13 7.3 Exposure Limits........................................................................................................................... 14 7.4 Maximum Permissible Exposure (MPE) ..................................................................................... 14 7.5 References .................................................................................................................................. 14 8 Housing Dimensions........................................................................................................................ 15 9 Technical Specifications ................................................................................................................. 16 Disclaimer...................................................................................................................................... 16 Overview........................................................................................................................................ 16 Key Features .................................................................…

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NMX910 Technical Notes OEM Interface Guide Issue:1.9 Last Update: 15 th October 1999 Author:Barry Hay DCC# COPY# FILE Unassigned REVISION CONTROLLED DOCUMENT NO UNAUTHORISED COPYING Copyright © 2001 Nomadic Communications ACN 056 637 453 All rights reserved. No part of this document may be reproduced or copied in any form by any means (graphic, electronic or mechanical, including photocopying or recording by any other information retrieval system) without the prior written permission of Nomadic Communications. The information contained in this document is commercial-in-confidence to Nomadic Communications and is subject to non-disclosure to any other party. Distribution of part or all of this document to parties other than only authorised recipients by Nomadic Communications is strictly prohibited. Nomadic Communications A.C.N. 056 637 453 Unit 6, 27 - 33 Thornton Crescent Mitcham, Victoria, Australia 3132. Box 506 Eastern MC Victoria, Australia 3110. Ph: 03 9873 7988 (Intl. +61 39873 7988) Fax: 03 9873 8911 (Intl. +61 39873 8911) NMX910 OEM GuideOEM Interface Guide Commercial in confidenceii Nomadic Communications Approvals Issue Technical Approval Project Approval 1.4Mike HamiltonNoel Diviney Record of Issue(s) IssueIssued byDateNature of Amendment(s) 1.0AH19.05.98Draft release 1.1AH3.07.98Revised for BBR605 / RF400302 1.2AH10.07.98
Signal naming convention changed to improve meaning
Document rearranged to improve readability
LED pins described
Design notes updated 1.3AH29.07.98Added section – Special Notes 1.4BH18.11.98Revised for related Mobitex document references RF Power vs Vrad issues 1.5BH12.01.99Revised For NMX900 Preliminary Issue 1.6BH03.05.1999Marketing Name Change to identify Production Release Added power requirements template Added discussion of Human Exposure to Radiofrequency Electromagnetic Fields 1.7BH30.06.1999Added New Section”Notes For Application Developers” 1.8BH10.09.1999Revisions added per notes from BellSouth. Added discussion on regulatory issues. 1.9BH15.10.1999Revised Chapter 7. Regulatory Issues NMX910 OEM GuideOEM Interface Guide Commercial in confidenceiii Nomadic Communications Contents Approvals............................................................................................................................................... ii Record of Issue(s) ................................................................................................................................. ii Contents................................................................................................................................................ iii 1 Introduction ........................................................................................................................................ 4 1.1 Scope ............................................................................................................................................ 4 2 Special Notes...................................................................................................................................... 5 3 External Interface ............................................................................................................................... 6 3.1 LED Configuration ......................................................................................................................... 7 4 Modes of Operation ........................................................................................................................... 7 4.1 Application of power ...................................................................................................................... 8 4.2 Network Contact............................................................................................................................ 8 4.3 Mode Change................................................................................................................................ 8 4.4 Shutdown ...................................................................................................................................... 9 4.5 Removal of power ......................................................................................................................... 9 5 NMX910 Recommended Power Supply Requirements ................................................................ 10 6 Notes For Application Developers ................................................................................................. 12 7 Regulatory Issues. ........................................................................................................................... 13 7.1 Class of Operation....................................................................................................................... 13 7.2 Antenna ....................................................................................................................................... 13 7.3 Exposure Limits........................................................................................................................... 14 7.4 Maximum Permissible Exposure (MPE) .......................................Error! Bookmark not defined. 7.5 References .................................................................................................................................. 14 8 Housing Dimensions........................................................................................................................ 15 9 Technical Specifications ................................................................................................................. 16 Disclaimer...................................................................................................................................... 16 Overview........................................................................................................................................ 16 Key Features .......................................…

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NMX400/900 Firmware V1.49 Release Notes Nomadic Communications Pty Ltd1 NMX400/900 Firmware V1.54 Development Release Notes 15 October 1999 Mobitex modem firmware modifications for the V1.54 development release are as follows: 1. Incorporated is a message transmit hold-off time which enforces a maximum, inter- dialogue, uplink, transmit/receive duty cycle of 50%, where 'dialogue' refers to the complete sequence of communications required to successfully communicate a mobitex packet of data (MPAK) to the network. The restriction applies to externally generated, non-alert messages from the DTE application only, not ROSI protocol level solicited network traffic. This means it is impossible for the DTE application to cause the total transmit time to exceed the total receive time between the start of transmission of any two, application initiated, dialogues. The intra-dialogue transmit/receive duty cycle is dictated by the ROSI protocol and cannot be altered. Related issues in firmware development release V1.54 are: 1. An SOS packet received from the DTE during a buffers full condition does not displace user data packets. The modem supplies a separate pool of 4 buffers for SOS packets. If all SOS buffers are depleted then no further SOS packets are accepted. 2. A MASC frame exceeding 1150 bytes is ignored by the modem. 3. ACTIVE packets generated from a buffers available condition while out of contact are not buffered by the modem. 4. Flow control messages from the modem to the DTE are not buffered during DTE link failure but a buffers full message is regenerated on link recovery. 5. Detection of higher priority SVP frames causes the modem to immediately reject the channel rather than allowing the loss of sweep synchronisation to reject the channel. 6. External battery level detection and reporting is not supported.

Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910 Nomadic Communications NMX910 Canada XXXXXXXX FCC ID:OKKNMX910

Operational Description FCC ID: OKKNMX910 Circuit Description The channel frequency for both the transmitter and the receiver are controlled by two separate phase locked loops using a common VCTCXO reference of 9.60 MHz. The reference oscillator has a stability of +/-1 ppm over the temperature range of –30 to +60 degrees C. There is circuitry that disables the transmitter whenever the PLL is out of lock. Maximum frequency error of the transmitter is +/-1.35 KHz. Modulation is GMSK with a BT = 0.3. The gaussian filter associated with the modulator is contained inside the modem IC (U6, type FX909AD5). The modulation level is fixed by component values, and cannot be changed by any external control. Voice modulation is not possible. The resulting emission bandwidth complies with FCC 90.210 mask J for any digital sequence. Data rate is fixed at 8.0 KHz. The transmitter has a power leveling circuit to control the output power to within +/-2 dB. There is no external control of the power output. The receiver uses dual conversion with a first IF of 86.85 MHz injected on the high side of the carrier. There are not external filters associated with this product. Provision is made for the connection of an external antenna, required in normal operation. Function and Semiconductor Devices This description is limited to the transceiver section of the unit only. See the block diagram for the location of the devices identified by circuit reference numbers. CVCO1Receiver voltage controlled oscillator used as part of the RX phase locked loop to generate the first mixer injection signal. First mixer injection is on the high side. CVCO2Transmitter voltage controlled oscillator used as part of the TX phase locked loop. Runs at the final TX frequency. CXTL1Reference oscillator for both RX and TX phase locked loops. Runs at 9.6 MHz. Operational Description Page 2 U7Phase comparators and frequency dividers. Part of both the RX and TX phase locked loops. SQ6Frequency multiplier used in generating the second mixer injection signal. Multiplication is x 9. SQ7Second mixer injection amplifier. SU6RX front end amplifier and first mixer. SU8RX first IF amplifier, second mixer, second IF amplifier, and demodulator. The first IF is 86.85 MHz, the second IF is 450 KHz and the second oscillator injection is on the low side. SU1Level setting of the RSSI indicator from the receiver. SQ10TX pre-driver. Approximately 0dBm output. SQ4TX power amplifier driver. Approximately 9dBm output. CU3TX final power amplifier with power control element. CU2RX/TX antenna changeover switch driven by SQ2 and SQ3. SD1TX forward power detector. Part of the TX power control loop. SD2TX forward power detector. Part of the TX power control loop. SU12TX power control loop amplifier. SQ5TX output disable. Used for “out of lock” disable. SU9TX modulation input amplifier.

FCC CERTIFICATION REPORT prepared for Nomadic Communications PTY. LTD. Unit 6, 27-33 Thornton Crescent Mitcham, Victoria, Australia 3132 FCC ID: OKKNMX910 May 17, 1999 WLL PROJECT #: 5133X This report shall not be reproduced, except in full, without the prior written consent of Washington Laboratories, Ltd. Nomadic Communications PTY. LTD. FCC ID: OKKNMX910 WLL Project #: 5133X i TABLE OF CONTENTS Statement of Qualifications Letter of Agency ________________________________________________ 1.0 INTRODUCTION................................................................................................................................................. 1 1.1 S UMMARY ............................................................................................................................................................ 1 2.0 DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) ............................................................................... 1 3.0 TEST CONFIGURATION................................................................................................................................... 2 3.1 RF O UTPUT P OWER (FCC R ULE P ART 2.985) ..................................................................................................... 2 3.2 M ODULATION C HARACTERISTICS (FCC R ULE P ART 2.987)................................................................................. 2 3.3 O CCUPIED B ANDWIDTH (FCC R ULE P ART 2.989)................................................................................................ 2 3.4 S PURIOUS E MISSIONS AT A NTENNA T ERMINALS (FCC R ULE P ART 2.991) .......................................................... 3 3.5 R ADIATED E MISSIONS T ESTING (FCC R ULE P ART 2.993) .................................................................................... 6 3.5.1 Radiated Data Reduction and Reporting ..................................................................................................... 6 3.6 F REQUENCY S TABILITY (FCC R ULE P ART 2.995) ................................................................................................ 9 3.6.1 Frequency Stability for Voltage Variation ................................................................................................... 9 3.6.2 Frequency Stability for Temperature Variation ......................................................................................... 10 TABLES Table 1.Spurious Conducted Emissions Table 2.Radiated Emissions Data Table 3.Measurement Equipment Used APPENDICES Appendix A.Occupied Bandwidth Plot Appendix B.Spurious Emissions at Antenna Terminals Plot Appendix C.Statement of Measurement Uncertainty Nomadic Communications PTY. LTD. FCC ID: OKKNMX910 WLL Project #: 5133X ii Nomadic Communications PTY. LTD. FCC ID: OKKNMX910 WLL Project #: 5133X iii Nomadic Communications PTY. LTD. FCC ID: OKKNMX910 WLL Project #: 5133X 1 FCC CERTIFICATION REPORT for Nomadic Communications PTY. LTD. 1.0 Introduction This report has been prepared on behalf of Nomadic Communications PTY. LTD. in support of their application for FCC Certification under Part 90 of the FCC Rules and Regulations. The Equipment Under Test was a Mobitex RF Modem (Model: NMX910). All measurements were performed at Washington Laboratories, Ltd. test center in Gaithersburg, MD. Site description and site attenuation data have been placed on file with the FCC's Sampling and Measurements Branch at the FCC laboratory in Columbia, MD. Washington Laboratories has been accepted by the FCC and approved by NIST NVLAP (NVLAP Lab Code 200066-0) as an independent FCC test laboratory. Measurements were made on the Equipment Under Test in accordance with FCC Rule Part 2, specifically the requirements stipulated in: 2.985 RF Power Output 2.987 Modulation Characteristics 2.989 Occupied Bandwidth 2.991 Spurious Emissions at Antenna Terminals 2.993 Field Strength of Spurious Radiation 2.995 Frequency Stability All results reported herein relate only to the item tested. This report shall not be used to claim product endorsement by NVLAP or any agency of the US Government. The measurement uncertainty of the data contained herein is ± 2.3 dB. Refer to Appendix D for Statement of Measurement Uncertainty. 1.1 Summary The Nomadic Communications PTY. LTD. NMX910 complies with the technical requirements of Part 90 of the FCC Rules and Regulations. 2.0 Description of Equipment Under Test (EUT) The Nomadic Communications PTY. Ltd. NMX910 is a 900 MHz Mobitex  Radio Packet Modem designed for integration into third party OEM equipment. The EUT contains a MCX antenna connector and power/data interface connector. The 2 watt radio uses GMSK modulation on 12.5 kHz channels. The frequency range of operation is from 896.0125 MHz to 900.875 MHz with 800 channels. Testing was performed at the low channel (896.0125 MHz), middle channel (898.375 MHz), and high channel (900.875 MHz). Frequency Range:896.0125 MHz -900.875 MHz Modulation:GMSK Number of Channels:800 Maximum Output Power:2.24 watts Nomadic Communications PTY. LTD. FCC ID: OKKNMX910 WLL Project #: 5133X 2 3.0 Test Configuration 3.1 RF Output Power (FCC Rule Part 2.985) Testing was performed on a low, middle and high transmit channel and in all three orthogonal planes. Power to the EUT was supplied via a 7V AC/DC adapter through the interface board. During testing, the EUT was connected to a DK2 Modem Regulator and Interface Board via the modem cable. The RS-232 port of the DK2 was connected to the PC serial port for software control. Specific Nomadic software program (NMXTOOL.EXE) was used to program the test frequency, power level, modulation (on/off), transmit time, and transmit control (on/off). I/O PortsI/O Cables RS-232 Port/Modem Port2 meter shielded/foil, Modem …

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