LV3RF1Transmitter Module for Digitrax Products

FCC ID: LV3RF1 SECTION 6 USER'S MANUAL FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1

September 7, 2000 Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sirs , This letter is being submitted regarding Digitrax, Inc. submittal for FCC ID: LV3RF1 . The EUT submitted in this report is a modular transceiver. This transceiver has been previously approved in Model DT100R throttle controller under FCC ID: LV3DT100R. For purposes of this application, t he EUT was tested as a stand alone device in order to submit the Transmitter board for modular approval. The EUT will only be used in Digitrax, Inc. products and in similar packaging arrangements as previously approved. The EUT meets all of the module design requirements except for the requirement for having its own RF shielding. Technical Information regarding these issues has been supplied to the uploaded to the FCC in the Operational Description Folder. Since the EUT does not meet with the shielding requirements, the wish to pursue a "Limited Modular Approval" (LMA). I hope that you find that this information fulfills the necessary FCC requirements for the Part 15 Certification requirements. If you have any questions, please feel free to contact me at (770)741-0717. Sincerely, Timothy R. Johnson NARTE Certified EMC Engineer No. EMC-002205-NE

SECTION 3 LABELING INFORMATION FCC ID: LV3RF1 Labeling of EUT FCC ID: LV3RF1 Exa mple Labe li ng of Fi nal P ro ducts w it h Mo dula r T X (EU T) Instal le d

FCC ID: LV3RF1 SECTION 5 PHOTOGRAPHS FCC ID: LV3RF1 PHOTOS OF THE TESTED EUT The following photos are attached: Photo 1.EUT, Top View of Transmitter Board Photo 2.EUT, Bottom View of Transmitter Board FCC ID: LV3RF1 Photo 1.EUT, Top View of Transmitter Board FCC ID: LV3RF1 Photo 2.EUT, Bottom View of Transmitter Board

SECTION 7 RF TECHNICAL INFORMATION

SECTION 4 SCHEMATIC FCC ID: LV3RF1 FCC ID: LV3RF1 FCC ID: LV3RF1

Digitrax, Inc. FCC Part 15, Certification Application RF1 Modular Transmitter September 7, 2000 MEASUREMENT/TECHNICAL REPORT COMPANY NAME: Digitrax, Inc. MODEL: RF1 Modular Transmitter FCC ID: LV3RF1 DATE: September 7, 2000 This report concerns (check one): Original grant X Class II change_____ Equipment type: Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? yes_____ No X If yes, defer until:_________________ date N.A. agrees to notify the Commission by N.A. date of the intended date of announcement of the product so that the grant can be issued on that date. Report prepared by: United States Technologies, Inc. 3505 Francis Circle Alpharetta, GA 30004 Phone Number: (770) 740-0717 Fax Number: (770) 740-1508 FCC ID: LV3RF1 TABLE OF CONTENTS SECTION 1 GENERAL INFORMATION 1.1 Product Description 1.2 Related Submittal(s) SECTION 2 TESTS AND MEASUREMENTS 2.1 Configuration of Tested EUT 2.2 Test Facility 2.3 Test Equipment 2.4 Modifications 2.5 Test Procedure and Results 2.6 Antenna Description 2.7 Field Strength of Fundamental 2.8 Peak Radiated Spurious Emissions 2.9 Average Radiated Spurious Emissions 2.10 Power Line Conducted Emissions for Transmitter SECTION 3 LABELING INFORMATION SECTION 4 SCHEMATIC SECTION 5 PHOTOGRAPHS SECTION 6 USER'S MANUAL SECTION 7 RF TECHNICAL INFORMATION FCC ID: LV3RF1 LIST OF FIGURES AND TABLES 1)Test Configuration 2) Photograph(s) for Spurious and Fundamental Emissions 3) Peak Power Output 4) Peak Radiated Spurious Emissions 5) Duty Cycle Characteristics TABLES 1)EUT and Peripherals 2) Test Instruments 3) Field Strength of Fundamental 4) Peak Radiated Spurious Emissions 5) Average Radiated Spurious Emissions 6) Conducted Emissions Data (Transmitter) FCC ID: LV3RF1 SECTION 1 GENERAL INFORMATION FCC ID: LV3RF1 GENERAL INFORMATION 1.1Product Description The Equipment Under Test (EUT) is a Digitrax, Inc. Model RF1. The EUT is a 916.5 MHz control transmitter that is typically used as part of a system including a 900 MHz receiver. The EUT and the receiver are used in Digitrax LocoNet Systems to control high end model locomotives. The EUT has been previously approved in a Model DT100R throttle controller. The purpose of this application is to test and approve the transmitter as a stand-alone module. The EUT will only be used in Digitrax, Inc. products and in similar packaging arrangements as the previously approved DT100R. Since the EUT meets all of the module design requirements except for its own RF shielding, Digitrax, Inc. wishes to pursue a “Limited Modular Approval” (LMA). 1.2Related Submittal(s)/Grant(s) The EUT will be used with part of a system to send/receive data. The transmitter presented in this report will be used with a receiver, which has been submitted and approved under FCC ID: LV3UR91. The EUT is subject to the following authorizations: a) Certification as a transmitter The information contained in this report is presented for the certification authorization(s) for the EUT. FCC ID: LV3RF1 SECTION 2 TESTS AND MEASUREMENTS FCC ID: LV3RF1 TEST AND MEASUREMENTS 2.1 Configuration of Tested System The sample was tested per ANSI C63.4, Methods of Measurement from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz (1992). Conducted and radiated emissions data were taken with the test receiver or spectrum analyzer's resolution bandwidth adjusted to 9 kHz and 120 kHz, respectively. All measurements are peak unless stated otherwise. The video filter associated with the spectrum analyzer was off throughout the evaluation process. Interconnecting cables were manipulated as necessary to maximize emissions. Interconnecting cables were manipulated as necessary to maximize emissions. A block diagram of the tested system is shown in Figure 1. Test configuration photographs for spurious and fundamental emissions are shown in Figure 2. The sample used for testing was received by U.S. Technologies on June 19, 2000 in good condition. Since the EUT will be incorporated into hand held devices, it was placed into a continuous mode of transmit and rotated about all 3 axis to obtain worse case results. 2.2 Test Facility Testing was performed at US Tech's measurement facility at 3505 Francis Circle, Alpharetta, GA. This site has been fully described and submitted to the FCC, and accepted in their letter marked 31040/SIT. Additionally this site has also been fully described and submitted to Industry Canada (IC), and has been approved under file number IC2982. 2.3 Test Equipment Table 2 describes test equipment used to evaluate this product. 2.4 Modifications No modifications were made by US Tech, to bring the EUT into compliance with FCC Part 15 limits for the transmitter portion of the EUT. FCC ID: LV3RF1 FIGURE 1 TEST CONFIGURATION TX Board (EUT) Throttle Controller with 9V battery for powering unit TX Board (Used to Control TX Board Only) 2’ u 2’ u unterm. FCC ID: LV3RF1 Test Date:June 19, 2000 UST Project:00-0285 Customer:Digitrax, Inc. Model:RF1 FIGURE 2a Photograph(s) for Spurious and Fundamental Emissions (Front) FCC ID: LV3RF1 Test Date:June 19, 2000 UST Project:00-0285 Customer:Digitrax, Inc. Model:RF1 FIGURE 2b Photograph(s) for Spurious and Fundamental Emissions (Back) FCC ID: LV3RF1 Test Date:June 19, 2000 UST Project:00-0285 Customer:Digitrax, Inc. Model:RF1 FIGURE 2c Photograph(s) for Digital Device Conducted Emissions Since the transmitter is designed for use only in portable products operating off of battery power, conducted emissions were deemed not necessary. FCC ID: LV3RF1 TABLE 1 EUT and Peripherals PERIPHERAL MANUFACTURER MODEL NUMBER SERIAL NUMBER FCC ID:CABLES P/D Modular Transmitter Board (EUT) Digitrax, Inc. RF1N/AN/A2’ u Throttle Controller Digitrax, Inc. DT300N/AN/A2’ u unterm. u = unshield s = shielded FCC ID: LV3RF1 TABLE 2 TEST INSTRUMENTS TYPEMANUFACTURERMODELSN. SPECTRUM ANALYZERHEWLETT-PACKARD8593E3205A00124 SPECTRUM ANALYZERHEWLETT-PACKARD8558B2332A09900 S A DISPLAYHEWLETT-PACKARD853A2404A02387 COMB GENERATORHEWLE…

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