HC8-901-1700-000Wireless Data Transfer Option

Digital Recorders WIRELESS DATA TRANSFER Operations and Maintenance Manual P/N 597-0002-000 Release 5/15/01 ©2001 Digital Recorders, Inc. All rights reserved. COPYRIGHT © 2001 DIGITAL RECORDERS, INC. ALL RIGHTS RESERVED No part of this manual may be reproduced or transmitted in any form electronic or mechanical without the express written permission of Digital Recorders, Inc. The information contained in this manual is updated regularly. Every effort has been taken to ensure the accuracy of the information within this manual. Digital Recorders, Inc. cannot assume liability for losses of any nature arising from errors or omissions. Printed in the US NOTE: This equipment 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 cause undesired operation. WARNING: Changes or modifications not expressly approved by Digital Recorders, Inc. may void the user’s authority to operate this equipment. WARNING: To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of 32cm or more should be maintained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended. To our valued customer; Digital Recorders is pleased to provide you with this Operations and Maintenance Manual for your Wireless Data Transfer. We hope you will find the information within both useful and informative. Every effort has been made to ensure the information found in this manual is accurate. If, however, you discover any errors, omissions or have any suggestions for changes or improvements please contact us. All of us at Digital Recorders wish to sincerely thank-you for choosing the Talking Bus ® family of products. We are continually striving to provide the highest quality products available along with the best customer service possible! We look forward to working with you. If you have any questions you can visit us on the web at www.talkingbus.com or contact us at 1-800-222- 9583. “The Transit Market's choice for automated voice announcement systems and related products and services." ™ Yours Truly, Tanya L. Johnson General Manager and Vice President Wireless Data Transfer SECTION 1 1-1 GENERAL INFORMATION 1.1 ABOUT THIS MANUAL This manual describes the theory of operation, system components, connections, and checkout procedure for the Digital Recorders Wireless Data Transfer option, which is an add-on to the DR500C ‘Talking Bus’ product. 1.2 ABOUT THE WIRELESS DATA TRANSFER OPTION 1.2.1 INTRODUCTION The Wireless Data Transfer option enables data to be wirelessly transmitted within a localized area between one or more base-station PC’s and vehicle-mounted DR500C ‘Talking Bus’ units. Depending upon system configuration, data transfer may be one-way (vehicles to PC or vise-versa) or two-way communication. This wireless communication link eliminates the need to physically transport the associated data to and/or from each vehicle via a PCMCIA card or other media. Wireless communication is provided using 2.4Ghz, Spread Spectrum Frequency Hopping (SSFH) technology. This technology provides high speed, secure, and reliable communication which is highly immune to outside interference. 1.2.3 THEORY OF OPERATION In addition to the standard ‘Talking Bus’ equipment, each Wireless Data Transfer-enabled vehicle contains a 2.4Ghz SSFH wireless modem, antenna, and associated hardware. A localized area on the transit property where the equipped vehicles congregate (such as the vehicle refueling area or garage) is identified and a centralized computer (with wireless modem, antenna, and associated hardware - collectively known as the wireless base-station), is installed at the location. For operational or coverage purposes, there may be more than one base-station installed at each location, or base-stations may be installed at multiple locations such as separate garages. In a typical vehicle yard there is a consistent manner in which the vehicles arrive for nighttime storage. Each vehicle arrives, one by one, at a fare collection, refueling, and/or washing station where it is serviced for a number of minutes. Afterwards, each continues to a yard or garage where it is parked along side all of the other vehicles and stored for the night. Wireless Data Transfer SECTION 1 1-2 These two areas (fare/fuel/wash and yard/garage) are typically co-located and within a few hundred yards of each other. Depending upon system configuration, the two locations described above may combine to define a single large wireless transmission area, or instead be considered two separate communication points, each with a separate base-station or set of stations. In the case of data download from the vehicle to the base-station (such as AVM data), the data will typically be downloaded at the fare/fuel/wash station area. Where physically possible, the yard/garage storage area may also be included to enable downloads to continue as the vehicles are parked. As each vehicle enters the download area, a full duplex communication link with the base-station is established. Up to four vehicles may communicate with a single base-station simultaneously and at full speed. If four vehicles are in the process of downloading data when additional vehicles enter the area, the entering vehicles are placed in a queue. Additional base-stations may be added to scale the number of simultaneous downloads. A day’s worth of AVM data will typically consist of less than 1MB of data, which should complete in under 5 minutes time per vehicle. If uploading of data (such as route changes) to the vehicles is also configured, then the yard/garage area is defined as a second communication point. A separate base-station is located in this area and dedicated to the data upload to vehicles. In the case of…

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September 4, 2001 FEDERAL COMMUNICATIONS COMMISSION 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: FCC Certification Authorization Application under FCC PART 15, Subpart C, Section 15.247 - Frequency Hopping Spread Spectrum Transmitters operating in the frequency band 2402 - 2478 MHz. Applicant: Digital Recorders, Inc. Product: Wireless Data Transfer Option Model No.: PX3 FCC ID: HC8-901-1700-000 Dear Sir/Madam As appointed agent for Digital Recorders, Inc., we would like to submit the application to the Federal Communications Commission for certification of the above product. Please review all necessary files uploaded to FCC OET site for detailed information. There are two test reports uploaded for this application, AeroComm Test Report and PX3 Test Report. Please refer AeroComm Test Report for Hopping Channel Frequency Characteristics (section 6.6 and 6.7) and Spurious Emissions – Conducted (section 6.10). All other applicable tests will be in PX3 Test Report. The above product incorporates an AeroComm 2.4 GHz FHSS Transceiver Module (FCC ID: KQL-PKLR2400-200). The incorporated radio is identical in design and construction to the original except without it’s enclosure shield and the external antenna used is a Maxrad Low profile – Vertical antenna (model MLPV1700, Frequency Range: 1700-2500MHz, Gain: 4dBi). • Compliance with RF Exposure Requirements: This radio transmitter is intended for use with a mobile or base system. Therefore, it shall comply with FCC 2.1091 with the minimum RF safety distance of 32 cm. The antenna required to be professionally installed as specified in section 3-1 of the Manual. If you have any queries, please do not hesitate to contact us. Yours truly, Tri Minh Luu, P. Eng., V.P., Engineering 2 3000 Bristol Circle Oakville, Ontario, Canada L6H 6G4 Telephone (905) 829-1570 Facsimile (905) 829-8050 Website: www.ultratech-labs.com Email: [email protected] [email protected] UltraTech Group of Labs

4018 Patriot Drive One Park Center, Suite 100 P.O. Box 14068 Research Triangle Park, NC 27709-4068 Tel: 919 361-2155 800 222-9583 Fax: 919 361-2947 www.talkingbus.com June 4, 2001 FEDERAL COMMUNICATIONS COMMISSION 7435 Oakland Mills Road Columbia, MD 21046 U.S.A. Subject: Authority to Act as an Agent to FCC Applicant: Digital Recorders, Inc. Product: Wireless Data Transfer Option Model: PX3 FCC ID: HC8-901-1700-000 Dear Sir/Madam, I hereby appoint UltraTech Engineering Labs Inc. (UltraTech) to act as my agent in preparation of this application to F.C.C. for authorization of equipment under F.C.C. Rules. I also certify that the information provided properly describes the device or system for which authorization is required. Regards, Steven Halberstadt Senior Project Engineer Digital Recorders, Inc.

4018 Patriot Drive One Park Center, Suite 100 P.O. Box 14068 Research Triangle Park, NC 27709-4068 Tel: 919 361-2155 800 222-9583 Fax: 919 361-2947 www.talkingbus.com June 4, 2001 FEDERAL COMMUNICATIONS COMMISSION 7435 Oakland Mills Road Columbia, MD 21046 U.S.A. Subject: Request for withholding from public disclosure the schematic diagrams and system block diagrams pursuant to an application for certification. Applicant: Digital Recorders, Inc. Product: Wireless Data Transfer Option Model: PX3 FCC ID: HC8-901-1700-000 Dear Sir/Madam, We, Digital Recorders, Inc., request that the schematic diagrams and system block diagrams submitted with the application for certification be withheld from public disclosure as per Section 0.459 of FCC Rules. This request is made under the provisions of Section 0.457(d) of the Commission’s Rules, and Section 552(b)(4) of the Freedom of Information Act. These sections authorize withholding from public inspection materials which would be privileged as a matter of law if retained by the person submitting them, and materials which would not customarily be released to the public by that person. The detailed confidential materials are listed as follows: No. Title Drawing No. Sheet No. 1. Schematic, PX3 Circuit Board SA-911-1601-000 1 2. Schematic, PX3 Circuit Board SA-911-1601-000 2 If you have any queries, please do not hesitate to contact us by our toll free number: 1-800-222-9583 Regards, Steven Halberstadt Senior Project Engineer Digital Recorders, Inc.

August 14, 2000 FEDERAL COMMUNICATIONS COMMISSION 7435 Oakland Mills Road Columbia, MD 21046 U.S.A. Subject: Request for withholding from public disclosure the schematic diagrams and system block diagrams pursuant to an application for certification. Applicant:AeroComm Inc. Product:2.4GHz FHSS OEM Transceiver Model:PKLR2400-200 FCC ID:KQL-PKLR2400-200 Dear Sir/Madam, We, AeroComm, would like to request that the schematic diagrams and system block diagrams/frequency plan, submitted with the application for certification be withheld from public disclosure as per Section 0.459 of FCC Rules. This request is made under the provisions of Section 0.457(d) of the Commission's Rules, and Section 552(b)(4) of the Freedom of Information Act. These sections authorize as a withholding from public inspection materials which would be privileged as a matter of law if retained by the person submitting them, and materials which would not customarily be released to the public by that person. The detailed confidential materials are listed as follows: No. Title Drawing No. No & Pages 1 GENOEM 100mW RF & OEM Frequency Plan 032-1006-MJV42 2 OEM Frequency Plan--1 3 PKLR2400-200 Bill of Materials--1 4 Aerocomm PKLR2400-200 Transmitter Operation Description3 If you have any queries, please do not hesitate to contact us by our TOLL FREE numbers: OUR TELEPHONE NO.:(800)492-2320 (913)492-2320 Yours truly, Daniel A. Miller President

ANNEX 3 – EXTERNAL EUT PHOTOS Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A3 - 1 ANNEX 3 – EXTERNAL EUT PHOTOS Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A3 - 2

2.50 1.00 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 cause undesiredoperation. FCC ID: HC8-901-1700-000 6.83 1.78 H G F E DC BA 87654321 H G F E DC BA 87654321 SIZE PROJECT NO. DWG NO REV A N/A A SCALE SHEET 1 OF 1 TITLE LOCATION OF FCC LABEL, PX3 MODULE REVISED 6/11/01 FILENAME FCC LABEL.VSD DRAWN BY SBH DATE 6/4/01 4018 PATRIOT DRIVE, SUITE 100P.O. BOX 14068RESEARCH TRIANGLE PARK, NC 27709 USA1.800.222.9583 FAX 919.361.2947www.talkingbus.com TM A DRI Company THIS DRAWING IS THE PROPERTY OF DIGITAL RECORDERS,INC.,WHO RETAINS ALL PATENT, PROPRIETARY DESIGN, USE, SALE,AND PRODUCTION RIGHTS. IT MAY NOT BE REPRODUCED ORUSED AS THE BASIS FOR MANUFACTURE OR SALE OF APPARATUSWITHOUT PERMISSION. REAR (antenna end) FRONT (LED end) TOP BOTTOM

ANNEX 4 - INTERNAL EUT PHOTOS Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A4 - 1 ANNEX 4 - INTERNAL EUT PHOTOS Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A4 - 2 ANNEX 4 - INTERNAL EUT PHOTOS Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A4 - 3 ANNEX 4 - INTERNAL EUT PHOTOS Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A4 - 4 ANNEX 4 - INTERNAL EUT PHOTOS Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A4 - 5

2.4 GHz FHSS Transceiver Module for Mobile and Fixed Station Model No.: PKLR2400-200 FCC ID: KQL-PKLR2400-200 Applicant: Aerocomm Inc. 13256 West 98th Street Lenexa, Kansas USA, 66215 In Accordance With FEDERAL COMMUNICATIONS COMMISSION (FCC) PART 15, SUBPART C, SEC. 15.247 Frequency Hopping Spread Spectrum Transmitters Operating in the Frequency Band 2402 - 2478 MHz UltraTech's File No.: AER39-FTX This Test report is Issued under the Authority of Tri M. Luu, Professional Engineer, Vice President of Engineering UltraTech Group of Labs Date: September 14, 2000 Report Prepared by: Dan Huynh Tested by: Hung Trinh Issued Date: September 14, 2000 Test Dates: September 12, 2000 The results in this Test Report apply only to the sample(s) tested, and the sample tested is randomly selected. UltraTech 3000 Bristol Circle, Oakville, Ontario, Canada, L6H 6G4 Telephone (905) 829-1570 Facsimile (905) 829-8050 Website: www.ultrat4ech-labs.com Email: [email protected] FCC PART 15, SUBPART C, SEC. 15.247 - FREQUENCY HOPPING SPREAD SPECTRUM TRANSMITTERS Contents i 2.4 GHz FHSS Transceiver Module for Mobile and Fixed Station, Model PKLR2400-200 FCC ID: KQL-PKLR2400-200 ULTRATECH GROUP OF LABS File #: AER39-FTX 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 September 14, 2000 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: [email protected], Website: http://www.ultratech-labs.com • Assessed by ITI (UK) Competent Body, NVLAP (USA) Accreditation Body & ACA/AUSTEL (Australia), VCCI (Japan) • Accredited by Industry Canada (Canada) under ACC-LAB (Europe/Canada MRA and APEC/Canada MRA) • Recognized/Listed by FCC (USA ) • All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST) TABLE OF CONTENTS EXHIBIT 1. SUBMITTAL CHECK LIST..................................................................................................................................1 EXHIBIT 2. INTRODUCTION...................................................................................................................................................3 2.1. SCOPE.....................................................................................................................................................................................3 2.2. RELATED SUBMITAL(S)/GRANT(S)......................................................................................................................................3 2.3. NORMATIVE REFERENCES...............................................................................................................................................3 EXHIBIT 3. PERFORMANCE ASSESSMENT.......................................................................................................................4 3.1. CLIENT INFORMATION......................................................................................................................................................4 3.2. EQUIPMENT UNDER TEST (EUT) INFORMATION.........................................................................................................4 3.3. EUT’S TECHNICAL SPECIFICATIONS............................................................................................................................5 3.3.1. Transmitter Specifications........................................................................................................................................5 3.3.2. Antenna Description..................................................................................................................................................5 3.4. LIST OF EUT’S PORTS............................................................................................................................................................7 3.5. ANCILLARY EQUIPMENT.....................................................................................................................................................7 3.6. GENERAL TEST SETUP.......................................................................................................................................................8 EXHIBIT 4. EUT OPERATING CONDITIONS AND CONFIGURATIONS DURING TESTS.......................................9 4.1. CLIMATE TEST CONDITIONS...............................................................................................................................................9 4.2. OPERATIONAL TEST CONDITIONS & ARRANGEMENT FOR TESTS...............................................................................9 EXHIBIT 5. SUMMARY OF TEST RESULTS.......................................................................................................................10 5.1. LOCATION OF TESTS.......................................................................................................................................................10 5.2. APPLICABILITY & SUMMARY OF EMC EMISSION TEST RESULTS............................................................................10 5.3. MODIFICATIONS INCORPORATED IN THE EUT FOR COMPLIANCE PURPOSES..........................................................10 EXHIBIT 6. MEASUREMENTS, EXAMINATIONS & TEST DATA FOR EMC EMISSIONS.....................................11 6.1. TEST PROCEDURES..............................................................................................................................................................11 6.2. MEASUREMENT UNCERTAINTIES.....................................................................................................................................11 6.3. MEASUREMENT EQUIPMENT USED:.................................................................................................................................11 6.4. ESSENTIAL/PRIMARY FUNCTIONS AS DECLARED BY THE MANUACTURER:..............................................11 6.5. UNLICENSED MODULAR TRANSMITETR APPROVAL REQUIREMENTS @ FCC PUBLIC …

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Wireless Data Transfer Option Model No.: PX3 FCC ID: HC8-901-1700-000 Applicant: Digital Recorders, Inc. 4018 Patriot Dr. One Park Center, Suite 100 P.O. Box 14068 Research Triangle Park, NC 27709-4068 USA In Accordance With FEDERAL COMMUNICATIONS COMMISSION (FCC) PART 15, SUBPART C, SECTION 15.247 Frequency Hopping Spread Spectrum Transmitters Operating in the Frequency Band 2402 - 2478 MHz UltraTech's File No.: DIR1-FTX This Test report is Issued under the Authority of Tri M. Luu, Professional Engineer, Vice President of Engineering UltraTech Group of Labs Date: September 4, 2001 Report Prepared by: Dan Huynh Tested by: Hung Trinh, RFI/EMI Technician Issued Date: September 4, 2001 Test Dates: August 1 & 31, 2001 The results in this Test Report apply only to the sample(s) tested, and the sample tested is randomly selected. UltraTech 3000 Bristol Circle, Oakville, Ontario, Canada, L6H 6G4 Telephone (905) 829-1570 Facsimile (905) 829-8050 Website: www.ultrat4ech-labs.com Email: [email protected] FCC PART 15, SUBPART C, SEC. 15.247 - FREQUENCY HOPPING SPREAD SPECTRUM TRANSMITTERS Contents i Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 ULTRATECH GROUP OF LABS File #: DIR1-FTX 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 September 4, 2001 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: [email protected], Website: http://www.ultratech-labs.com • Assessed by ITI (UK) Competent Body, NVLAP (USA) Accreditation Body & ACA/AUSTEL (Australia), VCCI (Japan) • Accredited by Industry Canada (Canada) under ACC-LAB (Europe/Canada MRA and APEC/Canada MRA) • Recognized/Listed by FCC (USA) • All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST) TABLE OF CONTENTS EXHIBIT 1. SUBMITTAL CHECK LIST....................................................................................................................................1 EXHIBIT 2. INTRODUCTION.....................................................................................................................................................2 2.1. SCOPE........................................................................................................................................................................................2 2.2. RELATED SUBMITTAL(S)/GRANT(S)....................................................................................................................................2 2.3. NORMATIVE REFERENCES.....................................................................................................................................................2 EXHIBIT 3. PERFORMANCE ASSESSMENT.........................................................................................................................3 3.1. CLIENT INFORMATION..........................................................................................................................................................3 3.2. EQUIPMENT UNDER TEST (EUT) INFORMATION..............................................................................................................3 3.3. EUT’S TECHNICAL SPECIFICATIONS....................................................................................................................................4 3.4. LIST OF EUT’S PORTS.............................................................................................................................................................5 3.5. ANCILLARY EQUIPMENT......................................................................................................................................................5 EXHIBIT 4. EUT OPERATING CONDITIONS AND CONFIGURATIONS DURING TESTS.........................................6 4.1. CLIMATE TEST CONDITIONS................................................................................................................................................6 4.2. OPERATIONAL TEST CONDITIONS & ARRANGEMENT FOR TESTS.................................................................................6 EXHIBIT 5. SUMMARY OF TEST RESULTS...........................................................................................................................7 5.1. LOCATION OF TESTS..............................................................................................................................................................7 5.2. APPLICABILITY & SUMMARY OF EMC EMISSION TEST RESULTS...................................................................................7 5.3. MODIFICATIONS INCORPORATED IN THE EUT FOR COMPLIANCE PURPOSES.............................................................7 EXHIBIT 6. MEASUREMENTS, EXAMINATIONS & TEST DATA FOR EMC EMISSIONS.........................................8 6.1. TEST PROCEDURES.................................................................................................................................................................8 6.2. MEASUREMENT UNCERTAINTIES........................................................................................................................................8 6.3. MEASUREMENT EQUIPMENT USED:....................................................................................................................................8 6.4. ESSENTIAL/PRIMARY FUNCTIONS AS DECLARED BY THE MANUFACTURER...............................................................8 6.5. AC POWERLINE CONDUCTED EMISSIONS @ FCC PART 15, SUBPART B, PARA.15.207(A)...........................................9 6.5.1. Limits...............................................................................................................................................................................9 6.5.2. Method of Measurements.............................................................................................................................................9 6.5.3. Test Arrangement....…

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EXHIBIT 9 - TEST DATA PLOTS PLOT 1 OF 49 20 dB OCCUPIED BANDWIDTH FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 2 OF 49 AVERAGE TIME OF OCCUPANCY FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 3 OF 49 AVERAGE TIME OF OCCUPANCY FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 4 OF 49 AVERAGE TIME OF OCCUPANCY FCC ID: KQL-PKLR2400-200

EXHIBIT 9 - TEST DATA PLOTS PLOT 5 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 6 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 7 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 8 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 9 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 10 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 11 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 12 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200 EXHIBIT 9 - TEST DATA PLOTS PLOT 13 OF 49 SPURIOUS EMISSIONS (CONDUCTED) FCC ID: KQL-PKLR2400-200

ANNEX 2 - TEST SETUP PHOTOS (AC Powerline Conducted Emissions) Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A2 - 1 ANNEX 2 - TEST SETUP PHOTOS (AC Powerline Conducted Emissions) Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A2 - 2 ANNEX 2 - TEST SETUP PHOTOS (Radiated Emissions at 3 Meters Distance) Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A2 - 3 ANNEX 2 - TEST SETUP PHOTOS (Radiated Emissions at 3 Meters Distance) Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A2 - 4 ANNEX 2 - TEST SETUP PHOTOS (Radiated Emissions at 3 Meters Distance) Digital Recorders, Inc. Wireless Data Transfer Option, Model PX3 FCC ID: HC8-901-1700-000 A2 - 5