NS901P6900 MHz Spead Spectrum Module

Operating Manual MHX-920E 900 MHz Spread Spectrum OEM Transceiver Revision 1.00 March 6, 2001 Microhard Systems Inc. #110, 1144 - 29 th Ave. N.E. Calgary, Alberta T2E 7P1 Phone: (403) 248-0028 Fax: (403) 248-2762 www.microhardcorp.com iiMHX-920E Operating Manual MHX-920E 900 MHz Spread-Spectrum Embedded Modem WARNING In order to comply with the FCC/IC adopted RF exposure requirements, this transmitter system will be installed by the manufacturer's reseller professional. Installation of all antennas must be performed in a manner that will provide at least 23 cm clearance from the front radiating aperture, to any user or member of the public. EQUIPMENT LABELING The manufacturer, product name, and FCC and Industry Canada identifiers of this product must appear on the outside label of the end-user equipment. l This manual contains information of proprietary interest to Microhard Systems Inc. It has been supplied in confidence to purchasers and users of the MHX-920E, and by accepting this material the recipient agrees that the contents will not be copied or reproduced, in whole or in part, without prior written consent of Microhard Systems Inc. Microhard Systems Inc. has made every effort to assure that this document is accurate and complete. However, the company reserves the right to make changes or enhancements to the manual and/or the product described herein at any time and without notice. Furthermore, Microhard Systems Inc. assumes no liability resulting from any omissions in this document, or out of the application or use of the device described herein. Microhard Systems’ products are appropriate for home, office, or industrial use, but are not authorized for utilization in applications where failure could result in damage to property or human injury or loss of life. The electronic equipment described in this manual generates, uses, and radiates radio frequency energy. Operation of this equipment in a residential area may cause radio interference, in which case the user, at his own expense, will be required to take whatever measures necessary to correct the interference. FCC Declaration of Conformity This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received including interference that may caused undesired operation. Microhard Systems Inc.’s products are warranted against all failures which occur as a result of defective material or workmanship within 12 months of purchase by the user. This warranty does not extend to products that, in the opinion of Microhard Systems Inc., have been subject to misuse, accidents, lightning strikes, improper installation or application, nor shall it extend to units which have, in Microhard Systems Inc.’s opinion, been opened, tampered with or repaired by an unauthorized facility. Microhard Systems Inc. Leaders in Wireless Telecom #110, 1144 - 29 th Ave. N.E. Calgary, Alberta T2E 7P1 Phone: (403) 248-0028 Fax: (403) 248-2762 www.microhardcorp.com © 2001 by Microhard Systems Inc., All Rights Reserved. HyperTerminal is copyrighted by Hilgraeve Inc, and developed for Microsoft. Microsoft and Windows are registered trademarks of Microsoft Corporation. pcANYWHERE and Symantec are registered trademarks of Symantec Corp. All other products mentioned in this document are trademarks or registered trademarks of their respective holders. Manual Revision 1.00, March 6, 2001. iiiMHX-920E Operating Manual Contents 1.Introduction 1.0Product Overview.............................................................................................................................................................................. 1 1.1Features.............................................................................................................................................................................................. 1 1.2About this Manual............................................................................................................................................................................. 2 2.Electrical/Physical 2.0Functional Block Diagram................................................................................................................................................................. 3 2.1Pinout................................................................................................................................................................................................. 4 2.2LED Operation................................................................................................................................................................................... 6 2.3DC Characteristics............................................................................................................................................................................. 8 2.4AC Characteristics..............................................................................................................................................................................9 3.Modes of Operation.....................................................................................................................................................................................11 3.1Data Mode........................................................................................................................................................................................11 3.2Command Mode...............................................................................................................................................................................12 3.2.1AT Command Interface.......................................................................................................................................................13 3.3Switching Between Command and Data Modes.........…

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#110, 1144 - 29th Avenue N.E. Calgary, Alberta T2E 7P1 Tel: (403) 248-0028 Fax: (403) 248-2762 Website: http://www.microhardcorp.com FCC ID: NS901P6 March 5, 2001 Federal Communications Commission OET Laboratory Division 7435 Oakland Mills Rd. Columbia, MD 21046 Re: Request for Confidentiality. Pursuant to the Commission’s Rules Microhard Systems Inc. requests confidential treatment of the Schematics and Bill of Materials for the MHX-920E (FCC ID: NS901P6) These documents contain trade secrets and proprietary information, which is not released to the public. Extensive research and development efforts have provided us with spread spectrum radio technology that significantly outperforms much of our competition. The public disclosure of these materials would be harmful to Microhard Systems Inc. and would give our competitors unfair benefits. Thank you in advance. Hany H. Shenouda President

MHX-920E Transceiver External Photographs MHX-920E Transceiver External Photographs MHX-920E Transceiver External Photographs MHX-920E Transceiver External Photographs MHX-920E Transceiver External Photographs MHX-920E Transceiver External Photographs

LABEL FORMAT AND LOCATION TOP View MHX-920E 900 MHz Wireless Spread Spectrum Microhard Systems Inc. SN: 00010000 CANADA: FCC ID: NS901P6 This device complies with Part 15 of the FCC Rules. Operation of this device is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference which may cause undesired operation.

Bottom View MHX-920E NS901P6

Top View MHX-920E NS901P6

RF Shield View MHX-920E NS901P6

Microhard Systems Inc. MHX-920E Operational Description MHX-920E Operational Description1 1.0 Operational Description The MHX-920E is a high-performance embedded spread spectrum data transceiver. Users communicate with this module via an asynchronous RS-232 interface. All data that users send to the module is buffered in banks of SRAM memory, packetized with the appropriate header information, and sent over the air at a fixed bit rate. The microprocessor inside the module precisely controls the bit-width, packet size, and hopping algorithm, to ensure that the RF occupied bandwidth and channel dwell-times remain constant. Users have no ability to modify the occupied bandwidth of the transmitted data. Users power the module from a 5 - 5.5V source. Linear regulators and biasing ensure that increases to the supply voltage will not increase the transmitted power, which is limited to 1W, or in the case that the module is sold with high gain antennas, the transmitted power is factory-limited to 100mW. The MHX-920E modem can be configured for a wide range of applications. The module is designed such that all communication is through one serial port (Pins 21 to 28 on the module). This port has two functions: 1. It provides the asynchronous interface with the host equipment for data that is sent/received on the RF channel. When operating in this fashion, the module is said to be in data mode. 2. It is also used for configuring and programming the module. When operating in this fashion, the module is said to be in command mode. The functionality of any particular MHX-920E can be configured as follows: nMaster Point-to-Point: The modem is configured to communicate with a single Slave, either directly, or through one or more Repeaters. nMaster Point-to-Multipoint: The modem is configured to communicate with one or more Slaves and/or Repeaters. nSlave: The modem is configured to communicate with one Master either directly or through one or more Repeaters.. nRepeater: The modem is configured to pass information from either a Master or another Repeater onto subsequent Repeaters and/or Slaves and vice versa. The Repeater also acts as a Slave in the sense that, like a Slave, it passes information to/from its serial port. The MHX-920E is a frequency hopping transceiver, meaning that it “hops” to a new frequency after a predetermined time interval. This time interval is a fixed time set by the user, and can range from 8ms to 120ms. The MHX-920E hops according to a pseudorandom pattern of 50 different channels. Each of the 50 channels is used once in the pseudorandom pattern, and the dwell time is equal among channels. There are 64 available channels with spacing of 400 kHz starting at 902.4 MHz and going up to 927.6 MHz. The system receiver input bandwidth is 350 kHz The RF connector on the module is an MCX straight PC mount jack. The manufacturer's part no. is: Johnson # 133-3701-211

8.0 RF Exposure Statement: Notice in Installation Manual: FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment, when installed as directed. This equipment should be installed and operated with fix-mounted antennas that are installed with a minimum of 2 meters of separation distance between the antenna and all persons’ body during normal operation. RF Exposure Calculations: The following information provides the minimum separation distance for the highest gain antenna provided with the EUT, as calculated from FCC OET 65 Appendix B, Table 1B Guidelines for General Population/Uncontrolled Exposure. This calculation is based on the highest EIRP possible from the system, considering maximum power and antenna gain, and considering a 0.6 mW/cm^2 uncontrolled exposure limit. The Friss formula used was: S = (Po*G) / (4*Pi*r^2)orr =(Po*G) / (4*Pi*S) WhereS = 0.6 mW/cm^2 for 902 MHz (902 / 1500) WherePo = 100 mW Peak for Yagi antennas, and 1000 mW for Omni Antennas WhereG= Isotropic antenna gain (numeric) Wherer= Minimum Safe Distance from antenna (cm) For:12 dB Yagi Antennar = 14 cm 2.5dB Omni Antennar = 15 cm 6 dB Omni Antennar = 23 cm FCC ID: NS901P6Page 2 of 2 RF Exposure Table For Antennas Used With This Equipment Antenna Type Gain (dBi) Numeric Gain ChannelPeak Output Power (mW) Calculated Distance (cm) Minimum RF Exposure Separation Distance (cm) Yagi121611001420 Yagi111311001320 Omni64110002323 Omni2.51.8110001620

M M I I C C R R O O H H A A R R D D S S Y Y S S T T E E M M S S , , I I N N C C . . F F C C C C I I N N F F O O R R M M A A T T I I O O N N FCC ID: NS901P6Page 2 of 48 R R R F F F M M M e e e a a a s s s u u u r r r e e e m m m e e e n n n t t t R R R e e e p p p o o o r r r t t t P P P r r r e e e p p p a a a r r r e e e d d d b b b y y y : : : N N N a a a t t t i i i o o o n n n a a a l l l C C C e e e r r r t t t i i i f f f i i i c c c a a a t t t i i i o o o n n n L L L a a a b b b o o o r r r a a a t t t o o o r r r y y y 8370 Court Avenue, Suite B-1 Ellicott City, Maryland 21043 (410) 461-5548 I I I n n n S S S u u u p p p p p p o o o r r r t t t o o o f f f : : : F F F o o o r r r : : : Microhard Systems, Inc. #110, 1144-29 th Avenue, NE Calgary Alberta, Canada T2E 7P1 Model: MHX-920E FCCID: NS901P6 Demonstration of Compliance with FCC Rules Part 15.247 No part of this report may be reproduced without written approval of National Certification Laboratory February 22, 2001 FCC APPLICATION FOR CERTIFICATION FCC ID: NS901P6Page 3 of 48 TABLE OF CONTENTS 1.0General Information.................................................................................................................................5 1.1Summary 1.2Test Methodology...................................................................................................................................5 1.3Test Facility.............................................................................................................................................5 2.0Description of Equipment Under Test (EUT).........................................................................................6 2.1EMI Countermeasure..............................................................................................................................7 3.0Test Program 4.0Test Configuration For Antenna Terminal Conducted.........................................................................8 4.1Peak Power Test Results.........................................................................................................................9 4.1.1Peak Power Modulated Carrier (1 MHz Res. BW) Low Channel Plot.........................................10 4.1.2Peak Power Modulated Carrier (1 MHz Res. BW) Mid Channel Plot.........................................11 4.1.3Peak Power Modulated Carrier (1 MHz Res. BW) High Channel Plot........................................12 4.220 dB Emission Bandwidth Test Results..............................................................................................13 4.2.120 dB Bandwidth Emissions (3 kHz Res. BW) Low Channel Plot..............................................14 4.2.220 dB Bandwidth Emissions (3 kHz Res. BW) Mid Channel Plot...............................................15 4.2.320 dB Bandwidth Emissions (3 kHz Res. BW) High Channel Plot..............................................16 4.3RF Antenna Conducted Spurious/Harmonics Emissions......................................................................17 4.3.1FCC Part 15.247(c) Conducted Spurious, 902.47 MHz Frequency Of Carrier............................18 4.3.2FCC Part 15.247(c) Conducted Spurious, 914.8 MHz Frequency of Carrier...............................19 4.3.3FCC Part 15.247(c) Conducted Spurious,927.6 MHz Frequency of Carrier................................20 4.3.4Conducted Harmonics Emissions (100kHz Res. BW) Low Cannel Plot......................................21 4.3.5Conducted Harmonics Emissions (100kHz Res. BW) Mid Cannel Plot......................................22 4.3.6Conducted Harmonics Emissions (100kHz Res. BW) High Cannel Plot.....................................23 4.4Conducted Bandedge Emissions Test Results......................................................................................24 4.4.1Low Channel Conducted Bandedge Emissions Plot.....................................................................24 4.4.2High Channel Conducted Bandedge Emissions Plot....................................................................25 4.5Channel Occupancy Test Results..........................................................................................................26 FCC ID: NS901P6Page 4 of 48 4.6UT Average Time of Channel Occupancy and Dwell Time.................................................................27 4.7Hopping Dwell Time.............................................................................................................................28 5.0Test Configuration For Conducted And Radiated Emissions............................................................29 6.0A.C. Conducted Emissions Scheme.......................................................................................................29 6.1AC Conducted Emissions Data Table...................................................................................................30 7.0Radiated Emissions Scheme...................................................................................................................31 7.1Yagi Antenna, 902.8 MHz, 100mW Radiated Emissions Data Table..................................................32 7.2Yagi Antenna, 914.7 MHz, 100mW Radiated Emissions Data Table..................................................33 7.3Yagi Antenna, 927.1 MHz,100mW Radiated Emissions Data Table...................................................34 7.46 dBi Omni Antenna, 902.8 MHz, 1000mW Radiated Emissions Data Table.....................................35 7.56 dBi Omni Antenna, 914.7 MHz, 1000mW Radiated Emissions Data Table.....................................36 7.66 dBi Omni Antenna, 927.1 MHz, 1000mW Radiated Emissions Data Table.....................................37 7.7Receiver, 915 MHz Radiated Emissions Data Table............................................................................38 8.0RF Exposure Statement........................................................................................................…

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MHX-920E Transceiver Conducted Emission Photographs MHX-920E Transceiver Conducted Emissions Photographs

MHX-920E Transceiver Radiated Emissions MHX-920E Transceiver Radiated Emissions MHX-920E Transceiver Radiated Emissions MHX-920E Transceiver Radiated Emissions