UQR-CMDCSTM3STM3 Transmitter Module

CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 1 of 38 STM3 User Manual Document Number: CMDC-DOC-1767 Document Revision: 1.14 Date: September 30, 2010 © Comtech Mobile Datacom Corporation (Comtech). All Rights Reserved This document contains information which is privileged, confidential, and/or proprietary to Comtech. This information is commercially sensitive in nature, is not made generally available for public review. The information contained herein is protected, among other things by the Trade Secrets Act, as codified, and any improper use, distribution, or reproduction is specifically prohibited. Comtech makes no representations or warranties, either express or implied, as to the information’s adequacy, sufficiency, or freedom from defect of any kind, including freedom from any patent infringement that may result from the use of such information, nor shall Comtech incur any liability or obligation whatsoever by reason of such information. Comtech’s disclosure of this information shall in no manner grant to the receiving party any right, title, interest, or license in or to the information, other than its use in accordance with the purposes specifically set forth in writing between Comtech and the receiving party. Under no condition should the information contained herein be provided in any manner whatsoever to any third party without the prior express written permission of Comtech, and the concurrent execution of a suitable Non-Disclosure Agreement. Comtech Mobile Datacom Corporation CMDC-DOC-1767, Rev. 1.14 CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 2 of 38 Revision History Revision Revision Date Description of the Changes 1.1 03/03/2010 New Document 1.2 Review of content to see progress. 1.3 Continued putting content into document 1.4 03/18/2010 Put in comments from Garrett & Saad review. Including Global changes: • Chopin -> STM3 • Chopin Module -> Chopin device • Unit ID -> ESN • STU -> STM3 • Should/shall – present tense (and will when applicable) • High / low power to standard power • “_” to identify pin names that may not be capitalized. Replaced with all caps where found Reformatted all table headings to center alignment (vertically/horizontally) Replaced pinout illustration with revised and reviewed drawing Highlighted all TBDs and put in notes identifying content to re-review 1.5 Kerry Keksz Accepted edits and text changes. Touched up Figure 7 Timing diagram. Responded to comment questions. Added content on ACK and NAK. Minor edits made to new paragraph with Track Changes on. 1.6 Kerry Keksz Put in Operating and Storage temperatures. Global search/replace to replace to STM3, replace air interface with OTA, replace TTL with 3.3V CMOS, and consistent use of Celsius and μ font. Updated RF Timing Spectrum. Content edits throughout per SME review. Comtech Mobile Datacom Corporation CMDC-DOC-1767, Rev. 1.14 CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 3 of 38 1.7 Saad Anis Accepted all comments and made minor changes throughout. Removed current consumptions on V_RF1 And V_RF2 until measurements are verified. 1.8 Chris Thorne Added details of SPI interface. 1.9 Garrett Chandler Corrected CTS_RDY and RTS_CE pin names. Corrected table and figure cross-references. 1.10 Anthony Valenzano Updated power levels. Updated firmware version. Changed tries to 5. Changed antenna gain to 5dBi. Added recommended antenna. Added recommendations for external antennas. Corrected current consumption. Total current consumption should be the digital consumption current plus the RF power consumption. 1.11 Garrett Chandler Updated firmware version number. 1.12 Saad Anis Added Certification Section Information. 1.13 Garrett Chandler Clean up formatting of document and content. Moved notice of certification requirements to Notices section of document. 1.14 Saad Anis Added FCC/IC Notes and reformatted Globalstar Notes. Comtech Mobile Datacom Corporation CMDC-DOC-1767, Rev. 1.14 CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 4 of 38 Notices The following terms are used in specific context throughout this document: WARNINGS, CAUTIONS, NOTES, and TIPS. WARNINGS are for procedures that, if not followed, may result in personal injury or death. CAUTIONS are for procedures that, if not followed, may result in hardware or software damage or failure. NOTES are included to provide the operator with additional information intended to simplify a step or entire procedure. TIPS are included for the operator detailing useful information about using the equipment and software. FCC/ IC NOTES: The STM3 is a transmitter module designed for mobile or fixed operations. STM3 devices will be manufactured with labels that include product information including FCC ID and IC ID of UQR-CMDCSTM3 and 8863A-CMDCSTM3 respectively. Purchasers of the STM3 devices are required to do one of the following while integrating the STM3 module into their products:  Provide visibility of the STM3 module through a window or,  Provide an easy way to get to the module when an access panel or door is removed or,  Place a label on the outside of the final (integrator) product that contains the following texts: “Contains FCC ID: UQR-CMDCSTM3” and “Contains IC: 8863A-CMDCSTM3”. GLOBALSTAR NOTE: Comtech Mobile Datacom Corporation CMDC-DOC-1767, Rev. 1.14 CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 5 of 38 CAUTION: RF exposure hazard. This unit must be operated with a minimum separation distance of 20 cm from a person’s body. Purchasers or integrators of the STM3 are required to have the products that incorporate the STM3 module certified by Globalstar before they can be activated, tested, or otherwise used on the Globalstar satellite constellation. Integrators are fully responsible for all regulatory and business licensing re…

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External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3 External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3

STM3 Label Information The STM3 label will contain the following information: Comtech Mobile Datacom Corp Model: STM3 P/N: CMDC-SENS-STM3 FCC ID: UQR-CMDCSTM3 IC: 8863A-CMDCSTM3 Ver A The Barcode information is as follows:  barcode is Code 128  B to C.  CPI is 15.0. Standard  max CPI is 12.0 for Below is an illustration of the STM3 with a label:

External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3 External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3 External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3 External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3 External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3 External Photos ©2008 Washington Laboratories, Ltd FCC ID: UQR-CMDCSTM3

CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 1 of 7 STM3 FCC Operational Description Document Number: CMDC-DOC-1849 Document Revision: 1.0 Date: August 24, 2010 © Comtech Mobile Datacom Corporation (Comtech). All Rights Reserved This document contains information which is privileged, confidential, and/or proprietary to Comtech. This information is commercially sensitive in nature, is not made generally available for public review. The information contained herein is protected, among other things by the Trade Secrets Act, as codified, and any improper use, distribution, or reproduction is specifically prohibited. Comtech makes no representations or warranties, either express or implied, as to the information’s adequacy, sufficiency, or freedom from defect of any kind, including freedom from any patent infringement that may result from the use of such information, nor shall Comtech incur any liability or obligation whatsoever by reason of such information. Comtech’s disclosure of this information shall in no manner grant to the receiving party any right, title, interest, or license in or to the information, other than its use in accordance with the purposes specifically set forth in writing between Comtech and the receiving party. Under no condition should the information contained herein be provided in any manner whatsoever to any third party without the prior express written permission of Comtech, and the concurrent execution of a suitable Non-Disclosure Agreement. CMDC-DOC-XXXX, Rev. X Page 2 of 7 Comtech Mobile Datacom Corporation CMDC-DOC-XXXX, Rev. X CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 3 of 7 Revision History Revision Revision Date Description of the Changes 1.0 August 24, 2010 Initial version Comtech Mobile Datacom Corporation CMDC-DOC-XXXX, Rev. X CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 4 of 7 Table of Contents 1.0 DESCRIPTION OF STM3..................................................................................... 5 2.0 HOW IT WORKS................................................................................................... 6 3.0 BASIC ARCHITECTURE..................................................................................... 7 4.0 TYPICAL INTEGRATION................................................................................... 7 5.0 OVER-THE-AIR INTERFACE ............................................................................ 7 Comtech Mobile Datacom Corporation CMDC-DOC-XXXX, Rev. X CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 5 of 7 1.0 DESCRIPTION OF STM3 The STM3 device provides simplex modem functionality that sends packet-switched data containing user information through a satellite constellation to ground stations and then to the end user via the Internet (see Figure 1). Error! Reference source not found. is a photo of the STM3 device. Endpoint DeviceSatellite NetworkGateway ReceiversEnd Customer STM3 STM3 STM3 Network Back Office Figure 1: System Overview Comtech Mobile Datacom Corporation CMDC-DOC-XXXX, Rev. X CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 6 of 7 Figure 2: STM3 2.0 HOW IT WORKS The STM3 device accepts commands and queries via a Universal Asynchronous Receiver/Transmitter (UART) or a serial peripheral interface (SPI) communications channel. The primary function of the device is to receive message data via one of the communications ports and then packetize and transmit the data to the satellite constellation. Depending on the configuration set by the host, the STM3 will repeat those messages up to 20 times at user-selected intervals in order to improve the probability of the message successfully being decoded at a Gateway Receiver. The number and interval of transmissions is set by user command and executed by the STM3 device. To remain as power conscious as possible, the default state of the STM3 device is sleep mode. The STM3 microcontroller is awakened by a user signal and responds to request the when it is ready to receive commands. Commands are then sent by the user and acted upon by the device. When a command/response transaction is complete the device re- enters sleep mode. While a message transmission cycle is under way, the STM3 enters sleep mode between each transmission attempt until all attempts are made, at which time it permanently enters sleep mode until the user initiates another command transaction. Comtech Mobile Datacom Corporation CMDC-DOC-XXXX, Rev. X CMDC Confidential and Proprietary Information - Use and Disclosure Restrictions Apply Page 7 of 7 3.0 BASIC ARCHITECTURE The STM3 device is built on a 1.15" x 1.15" printed circuit board (PCB). The circuitry is covered by a metal radio frequency (RF) shield. The STM3 circuitry consists of a microcontroller for command processing and system control and a complex programmable logic device (CPLD) that integrates the data with the spreading code. The CPLD is followed with a synthesizer, a mixer, and a power amplifier to up-convert and amplify the baseband data for transmission. 4.0 TYPICAL INTEGRATION The STM3 device is intended to be a module in a larger system. The system must have means of providing adequate power (low noise and relatively high-current) and must possess an electrical signaling mechanism compatible with the module. The system into which the STM3 is integrated also must provide a path for the RF energy to move from the STM3 to an appropriate antenna. Caution also must be exercised to ensure that transmitted and leakage RF energy do not cause interference with the nominal operation of the components on the user’s circuit board. 5.0 OVER-THE-AIR INTERFACE Once a packet is created, it is sent over the air multiple times (called transmission attempts). The number of transmission attempts, as well as the interval rang…

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Certificates and reports shall not be reproduced except in full, without the written permission of Washington Labs, Limited. Maximum Permissible Exposure Evaluation For the Comtech Mobile Datacom Corporation STM3 TRANSMITTER MODULE FCC ID: UQR-CMDCSTM3 IC: 8863A-CMDCSTM3 September 22, 2010 WLL Report: 11315-MPE Prepared for: COMTECH MOBILE DATACOM CORPORATION 20430 CENTURY BLVD. G ERMANTOWN, MD 20874 Prepared by: WASHINGTON LABORATORIES, LTD. 7560 LINDBERGH DRIVE G AITHERSBURG, MARYLAND 20879 Testing Certificate AT-1448 Comtech Mobile Datacom Corporation Chopin project RF Exposure Test Report September, 2010 WLL Report #11315-MPE - ii - © 2010 Washington Laboratories, Ltd. Maximum Permissible Exposure Evaluation For the Comtech Mobile Datacom Corporation STM3 TRANSMITTER MODULE September 22, 2010 WLL Report # 11315-MPE Prepared by: James Ritter EMC Compliance Engineer Reviewed by: Steven D. Koster EMC Operations Manager Comtech Mobile Datacom Corporation STM3 Transmitter Module RF Exposure Test Report September, 2010 WLL Report #11315-MPE - iii - © 2010 Washington Laboratories, Ltd. Abstract This report has been prepared on behalf of Comtech Mobile Datacom Corporation STM3 Module project to document the findings of the maximum permissible exposure evaluation on the Comtech Mobile Datacom Corporation STM3 Module project. The purpose of this evaluation is to establish a minimum safe distance as per the RF exposure requirements as defined in FCC §1.1307 & §1.1310. This report documents the results of testing to the requirements of: • CFR Title 47 Volume 1 Practice and Procedure; (1.1307) Environmental Assessments The Evaluation was performed by Washington Laboratories, Ltd, 7560 Lindbergh Drive, Gaithersburg, MD 20879. Washington Laboratories, Ltd. has been accepted as an EMC Conformity Assessment Body (CAB) under the United States/European Union Memorandum of Agreement. Washington Laboratories, Ltd. is accredited by ACLASS under Testing Certificate AT-1448. Revision History Reason Date Rev 0 Initial Release September 22, 2010 Comtech Mobile Datacom Corporation STM3 Transmitter Module RF Exposure Test Report September, 2010 WLL Report #11315-MPE - iv - © 2010 Washington Laboratories, Ltd. Table of Contents Abstract .................................................................................................................................................................... ii 1 Introduction ................................................................................................................................................ 1 2 Requirements .............................................................................................................................................. 1 2.1 Transmitter Categories ............................................................................................................................. 1 2.2 Exposure Categories ................................................................................................................................ 2 3 Device Summary ......................................................................................................................................... 3 4 Radio Frequency Radiation Exposure Evaluation ..................................................................................4 List of Tables Table 1: MPE Limits ..................................................................................................................................................3 Table 2: Device Summary of the STM3 Module .......................................................................................................3 Table 3: Transmitter MPE Calculation Summary ......................................................................................................4 Comtech Mobile Datacom Corporation STM3 Transmitter Module RF Exposure Test Report September, 2010 WLL Report #11315-MPE - Page 1 of 4 - © 2010 Washington Laboratories, Ltd. 1 Introduction This report has been prepared on behalf of Comtech Mobile Datacom Corporation STM3 Transmitter Module to show compliance with the RF exposure requirements as defined in FCC §1.1307 Testing supporting this evaluation was performed at Washington Laboratories, Ltd, 7560 Lindbergh Drive, Gaithersburg, MD 20879. Washington Laboratories, Ltd. has been accepted as an EMC Conformity Assessment Body (CAB) under the United States/European Union Memorandum of Agreement. Washington Laboratories, Ltd. is accredited with ACLASS under Testing Certificate AT-1448. 2 Requirements Three different categories of transmitters are defined by the FCC in OET Bulletin 65. These categories are fixed installation, mobile, and portable. Additionally, the FCC categorizes the use of the devices based on the user’s awareness and the ability to exercise control over his or her exposure. The two categories are defined as Occupational/Controlled Exposure and General Population/Uncontrolled Exposure. 2.1 Transmitter Categories 2.1.1 Fixed Installations A fixed location means that the device, including its antenna, is physically secured at a permanent location and is not able to be easily moved to another location. Additionally, distance to humans from the antenna is maintained to at least 2 meters. 2.1.2 Mobile Devices A mobile device is defined as a transmitting device designed to be used in other than fixed locations and to be generally used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter's radiating structures and the body of the user or nearby persons. Transmitters designed to be used by consumers or workers that can be easily re-located, such as a wireless modem operating in a laptop computer, are considered mobile devices if they meet the 20 centimeter separation requirement. The FCC rules for evaluating mobile devices for RF compliance are found in 47 CFR §2.1091. 2.1.3 Portable Devices A portable device is defined as…

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Certificates and reports shall not be reproduced except in full, without the written permission of Washington Laboratories, Limited. FCC Part 25 Test Report For the Comtech Mobile Datacom Corporation STM3 TRANSMITTER MODULE FCC ID: UQR-CMDCSTM3 WLL REPORT# 11315-01 Rev 5 March 2, 2010 Re-issued September 22, 2010 Prepared for: Comtech Mobile Datacom Corporation 20430 Century Blvd. Germantown, MD 20874 Prepared By: Washington Laboratories, Ltd. 7560 Lindbergh Drive Gaithersburg, Maryland 20879 Testing Certificate AT-1448 Comtech Mobile Datacom Corporation STM3 Transmitter Module FCC Part 25 Test Report September 2010 WLL Report #11315-01 - Page 1 of 45 - © 2010 Washington Laboratories, Ltd. FCC Part 25 Test Report For the Comtech Mobile Datacom Corporation STM3 TRANSMITTER MODULE WLL REPORT# 11315-01 Rev 5 March 2, 2010 Re-issued September 22, 2010 Prepared by: James Ritter EMC Compliance Engineer Reviewed by: Steven D. Koster EMC Operations Manager Comtech Mobile Datacom Corporation STM3 Transmitter Module FCC Part 25 Test Report September 2010 WLL Report #11315-01 - Page 2 of 45 - © 2010 Washington Laboratories, Ltd. Abstract This report has been prepared on behalf of Comtech Mobile Datacom Corporation STM3 Transmitter Module to support compliance of a Satellite Earth Station under Part 25 of the FCC Rules. This Part 25 Test Report documents the test configuration and test results for a Comtech Mobile Datacom Corporation STM3 Transmitter module. Testing was performed on an Open Area Test Site (OATS) of Washington Laboratories, Ltd, 7560 Lindbergh Drive, Gaithersburg, MD 20879. 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. At the initial issuance of this report Washington Laboratories, Ltd. was accepted by the FCC and approved by the American Association for Laboratory Accreditation (A2LA) under Certificate 2675.01 as an independent FCC. As of April 1 st 2010, Washington Laboratories, Ltd is accredited by ACLASS under Testing Certificate AT-1448. The Comtech Mobile Datacom Corporation STM3 Transmitter module complies with the limits for a Satellite Earth Station device under FCC Part 25. Revision History Reason Date Rev 0 Initial Release March 2, 2010 Rev 1 Changed Authorized bandwidth to 2.5MHz in Table 1 –page 7 and under heading 4.3 Authorized bandwidth page 25 Replotted Pt25.202 emission mask to reference mean output power Name of unit changed from Chopin to STM3 March 16, 2010 Rev 2 Added section 4.1.3 ‘Conducted Peak RMS Power at Antenna Port’, added Peak RMS Power row to Table 1 ‘Device Summary’ April 23, 2010 Rev 3 Retested the STM 3 to verify the unit for component changes and an antenna change. July 27, 2010 Rev 4 Corrected typos in Table 1 referencing a 3dBi antenna, should have been 5dBi. July 29, 2010 Rev 5 Added new sections 2.2 ‘Modulation Description and Emission Designator’ and 2.3 ‘Voltages and Currents of Transmitter Output Amplifier- September 22, 2010 Comtech Mobile Datacom Corporation STM3 Transmitter Module FCC Part 25 Test Report September 2010 WLL Report #11315-01 - Page 3 of 45 - © 2010 Washington Laboratories, Ltd. Table of Contents Abstract ....................................................................................................................................................... ii 1 Introduction..........................................................................................................................5 1.1 Compliance Statement .....................................................................................................5 1.2 Test Scope ........................................................................................................................5 1.3 Deviations to the Standard ...............................................................................................5 1.4 Contract Information........................................................................................................5 1.5 Test Dates ........................................................................................................................5 1.6 Test and Support Personnel .............................................................................................5 1.7 Abbreviations ...................................................................................................................6 2 Equipment Under Test .........................................................................................................7 2.1 EUT Identification & Description ...................................................................................7 2.2 Modulation Description and Emission Designator ..........................................................7 2.3 Voltages and Currents of Transmitter Output Amplifier .................................................8 2.4 Test Configuration ...........................................................................................................8 2.5 Testing Algorithm..........................................................................................................10 2.6 Test Location .................................................................................................................10 2.7 Measurements ................................................................................................................10 2.8 Measurement Uncertainty..............................................................................................10 3 Test Equipment ..................................................................................................................12 4 Test Results ........................................................................................................................13 4.1 RF Power Output (FCC 25.204) ....................................................................................13 4.2 20dB Occupied Bandwidth ........…

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Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd