NT9-PROFI-CARModel Aircraft Radio Control Transmitter

FCC Label Location Bottom view of PROFI CAR 707 Forward

Description of the R/C - system Car 76 Mc / RF - Unit Specification of the crystal controlled transmitter: Power supply 8.4 Volts ( 6 NI - Cells ) Input current up to 180mA ModesFM and AM RF - output power 250 mW Frequency band 76 Mc FM - mode 1.65 Kc PPM4 AM - mode m = 90 % PPM4 Crystal specification MPX - 1032 RF - Unit Car - Transmitter part 76Mc : The rf unit is a crystal controlled transmitter ( 4 stages) The oscillator operates on frequency trebling optional working in FM or AM mode. The mode options of this R/C system can be chosen by menu. Working as a FM transmitter the crystal oscillator stage will be used for FM modulation . Working as an AM transmitter the power amplifier stage is used for amplitude modulation and FM modulation is blocked . The transmitter operating only in one of these modes (FM or AM). In both options the control signals are filtered to obtain lower bandwidth. The rf - output signal is filtered and matched to the antenna. The rf filter combination of the final stage are limiting the emission of harmonics to the required values. The transmitter unit is able to perform control data types such as PPM 4 and PPM 7 , which can be chosen by the basic μP controlled RC - System. All settings and adjustments are tested in order to obtain the requirements of the FCC regulations and best performance. Niefern 8.2.2000

1 MULTIPLEX Profi car Transmitter for radio controlled models Technical description of basic transmitter and RF section Manufacturer:MULTIPLEX Modelltechnik GmbH Neuer Weg 2 D-75223 Niefern-Oeschelbronn Germany Type designation:MULTIPLEX Profi car 403 and Profi car 707 Mode of operation:One-way symbolic transmission Operating voltage:7.2 Volt +/- 10% Ni/Cd battery, 600 mAh Number of control functions:Profi car 4034 functions Profi car 7077 functions AM mode2 functions, both versions Aerial:Screw-fitting telescopic aerial, approx. 100 cm Description of function, signal section: The Profi car 403 and 707 devices are of identical construction. The Profi car 403 is the standard version which includes all the essential functions required for controlling ground- based vehicles. It provides control of four functions. A maximum of three user-defined memories can be used to store control travels and function assignments. The Profi car 707 features additional auxiliary functions and three extra control functions, and the number of memory spots is increased to seven. The electrical and mechanical construction of the two devices are identical. The central control unit of the main circuit board of the Profi car radio control transmitter consists of an AT-Mega603 RISC micro-controller made by the ATMEL company. This part is designated IC 4 in the circuit diagram. The micro-controller contains a programmable flash ROM in which the program data are stored. The micro-controller also includes RAM (Random Access Memory) and an EEPROM for permanent storage of the transmitter-specific set-up data. The controller’s pulse oscillator is frequency-stabilised by means of a crystal operating at a frequency of 8 MHz. IC 2 (TC1055) generates a stabilised voltage of 5 Volts. This voltage serves as power supply voltage for the micro-controller, reference voltage for the A/D converter and as power supply voltage for the transmitter controls. This module also monitors the operating voltage and produces a defined reset signal when the transmitter is switched on. The transmitter is operated by means of the integral main central control, which provides steering and throttle control of a model vehicle. Grouped around the main control are additional operating elements in the form of momentary switches, rotary controls and digital controls. The top surface of the transmitter features a keypad comprising 5 separate buttons which are used for entering data and switching functions on and off. The function of the controls and buttons varies according to the current mode of operation of the transmitter. The analogue values of the controls are passed to the analogue inputs ADC0 to ADC4 of the micro-controller IC4. 2 The switched state of the momentary switches and of the incremental control are read-in via the port inputs PA, PB to PD in digital form. The RF module is modulated and the AM- FM mode is selected via the port PE. An application-specific LCD screen serves as display for the battery state and the transmitter functions, and is controlled by the LCD driver IC1. The LCD driver and screen unit are located on a separate circuit board, connected to the main circuit board via a connector. The system also includes an audible warning for indicating low battery voltage. The socket D1 serves as charge socket for the integral Ni/Cd battery.

FCC CERTIFICATION TEST REPORT prepared for MULTIPLEX USA 14751 Calvert Street Van Nuys, CA 91411 FCC ID: NT9-PROFI-CAR May 17, 2000 WLL PROJECT #: 5681X This report shall not be reproduced, except in full, without the prior written consent of Washington Laboratories, Ltd. MULTIPLEX USA FCC ID: NT9-PROFI-CAR WLL Project #:5681X i TABLE OF CONTENTS Statement of Qualifications 1.0 INTRODUCTION ........................................................................................................................................... 1 1.1 S UMMARY .............................................................................................................................................................. 1 2.0 DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) ............................................................. 1 3.0 TEST CONFIGURATION ........................................................................................................................... 1 3.1 RF O UTPUT P OWER (FCC R ULE P ART 95.639) ...................................................................................................... 2 3.2 A UTHORIZED B ANDWIDTH (FCC R ULE P ART 95.633) ............................................................................................ 2 3.3 R ADIATED E MISSIONS T ESTIN G (FCC R ULE P ART 95.635)..................................................................................... 2 3.3.1 Radiated Data Reduction and Reporting ...................................................................................................... 3 3.4 F REQUENCY S TABILITY (FCC R ULE P ART 95.623) ................................................................................................. 5 Tables Table 1.Radiated Emissions Data Table 2.Measurement Equipment Used Appe ndice s Appendix A.Occupied Bandwidth Plot Appendix B.Statement of Measurement Uncertainty MULTIPLEX USA FCC ID: NT9-PROFI-CAR WLL Project #: 5681X 1 FCC CERTIFICATION REPORT for MULTIPLEX USA 1.0 Introduction This report has been prepared on behalf of MULTIPLEX USA in support of their application for FCC Certification under Part 95 of the FCC Rules and Regulations for an R/C transmitter. The Equipment Under Test was the PROFI 707 Radio Controller. 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 and Part 95, specifically the requirements stipulated in Part 95 Subpart E – Technical Regulations 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 C for Statement of Measurement Uncertainty. 1.1 Summary The MULTIPLEX USA PROFI mc 4000 Radio complies with the technical requirements of Part 95 of the FCC Rules and Regulations. 2.0 Description of Equipment Under Test (EUT) The MULTIPLEX USA PROFI mc 4000 Radio is a model aircraft remote control transmitter. The EUT is hand-held battery powered and provides for the remote operation of model aircraft. The unit operates in the 72.01-72.99 MHz band reserved for this purpose and provides control for full aircraft flight. The R/C transmitter uses FM-PPM modulation with a frequency deviation of 1.5 kHz. 3.0 Test Configuration To complete the test configuration required by the FCC, the R/C Transmitter was tested with the transmitter being set to continuously transmit. For emissions testing the EUT antenna was placed both horizontally and vertically. A power supply was used to power the EUT and to avoid battery drain. MULTIPLEX USA FCC ID: NT9-PROFI-CAR WLL Project #: 5681X 2 3.1 RF Output Power (FCC Rule Part 95.639) The EUT was placed on a 0.8m table with the antenna fully extended. A power charging cord was connected to keep the unit at full charge power, however, the unit only runs off batteries. The output from the transmitter was connected to a 10 dB attenuator and then to the input of an HP 8568B RF Spectrum Analyzer. The analyzer offset was adjusted to compensate for the 10 dB attenuator. The RF output power across a 50 ohm load termination was measured directly by the analyzer. RESULTS: The measured RF output power was 25 dBm, or 0.316 W. LIMIT:For 72-76 MHz operation: 0.75 W 3.2 Authorized Bandwidth (FCC Rule Part 95.633) The authorized bandwidth was measured using the same setup that was used for the RF power measurements test except for the spectrum analyzer resolution bandwidth was set to 1000 Hz. Results of the testing are displayed in Appendix A of this report. RESULTS:7.85 kHz LIMIT:8 kHz 3.3 Radiated Emissions Testing (FCC Rule Part 95.635) The EUT was placed on an 80 cm high, 1 X 1.5 meters non-conductive motorized turntable for radiated testing on a 3 meter open field test site. The emissions from the EUT w ere measured continuously at every azimuth by rotating the turntable. Broadband antennas were mounted on an antenna mast to determine the height of maximum emissions. The height of the antenna was varied between 1 and 4 meters. Horizontal and vertical field components were measured. The EUT was setup in a fixed in an upright position with the antenna vertical and laying flat and with the antenna horizontal. The batteries were fully charged during testing. Emissions were measured in both vertical and horizontal polarization. The output from the antenna was connected, via a preamplifier, to the input of the spectrum analyzer. The detector function was set to peak. The measurement bandwidth of the spectrum analyzer system was set to at least 120 kHz, wi…

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