Becker Avionics RT320911 Aviation Communications Transceiver User Manual TIT E 03

Becker Flugfunkwerk GmbH Aviation Communications Transceiver TIT E 03

Contents

User Manual

Installation and OperationManual DV 60602.03Issue 1August 1997BECKER FLUGFUNKWERK GMBH • Baden Airpark • P.O. Box 34 D-76549 Huegelsheim • Telephone 07229 / 305-0VHFTransceiverRT 3209 - ( )
FIRST ISSUE AND CHANGESIssue . . . . . 1 . . . . . August 1997LIST OF EFFECTIVE PAGESPage No.: Date : Page No.: Date :Title1 -I - 1-II1-1 - 1-102-I - 2-II2-1 - 2-808/9708/9708/9708/9708/97© by Becker FlugfunkwerkAll rights reserved
Table of contentsSection IGENERAL DESCRIPTION Seite1.1 Introduction 1-11.2 Purpose of equipment 1-11.3 General description 1-21.4 Variants survey 1-31.5 Technical data 1-31.5.1 Power supply 1-31.6 General data 1-41.6.1 Dimensions Weight, Fuse 1-41.6.2 Receiver data 1-51.6.3 Transmitter data 1-61.7 Software 1-71.8 Approval and Regulations 1-71.9 Environmental Qualification Form 1-81.10 Scope of delivery 1-91.11 Accessories 1-9RT 3209 - ( )DV 60602.03/.04 Issue 08/97 Page 1-I
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Section IGENERAL DESCRIPTION1.1 IntroductionThe following manual describes the VHF transmit/receiver RT 3209 - ( ). The manuals DV 60602.03("Installation and Operation") and DV 60602.04 (Maintenance and Repair") contain the followingsection :Section DV 60602.03 DV 60602.041General Information X X2Installation X X3Operation X X4Theory of operation X5Maintenance and Repair X6Illustrated Parts List X7Modification and Changes X8Circuit Diagrams x1.2 Purpose of equipmentThis remote-control VHF-transceiver RT 3209 - ( ) is controlled by a CU 5209 - ( ) control unit (or equal).The transceiver enables voice communication on 760 channels in the 118.000 MHz to 136.975 MHzrange with a channel spacing of 25 kHz. It complies with the requirements of ICAO Annex 10 validfrom 01.01.1995.RT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 1-1
1.3 General descriptionThe transceiver is designed for installation in the avionics compartment.The following are mounted on the connector end.The equipment connector for connecting to the aircraft system.The antenna socket for connecting the antenna.The electronic system of the unit consists of the following circuit boards, which are connected to eachother by connectors.l1. Audio boardl2 Connector boardl3. Receiver boardl4 Transmitter boardl5. Processor boardThe processor board is secured to the front panel by three bolts. The microcontroller as well as thenecessary storage and peripheral components are located on the processor board.The VHF transceiver is fitted with a single superheterodyne receiver. A squelch (muting) circuitsuppresses transmitters or disturbances below a certain field strength. The switching threshold canbe set. The squelch function can also be switched off.The transmitter is designed to be wideband over the 118.000 MHz to 136.975 MHz range. The sidetoneis automatically switched to the headphone output during transmission. The oscillator frequency of the receiver and the transmitting frequency of the transmitter are generatedby a VCO (voltage controlled oscillator). This is monitored by a digital frequency evaluation circuit.This digital frequency processing operates in conjunction with a microprocessor.The microphone inputs are designed for parallel both dynamic and standard microphones. The inputsare connected to a dynamic volume compressor which keeps the modulation voltage constant over awide input voltage range.Aircraft internal communication is possible in the IC (intercom) mode. Activation is by means of anexternal IC button (or switch) which is to be connected to the equipment connector.The AF auxiliary input enables AF signal switching of auxiliary units in the aircraft. The switchedAF signals can, however, only be monitored in the reception mode.RT 3209 - ( )Page 1-2 DV 60602.03/04 Issue 08/97
Special functionsThe transceiver contains some special functions which can be set in the service mode in conjuntion with the control unit CU 5209 - ( ).lThe squelch sensitivity, IC, sidetone and audio external input volume lThe frequency setting can be inhibited. The transceiver then operates only on thefrequencies stored in the storage channels.lThe storage of frequencies in the storage channels can be inhibited.lAccess to the service mode can be interlocked with a 4-digit password.1.4 Variants surveyType designation Part No.: Transmitter output Power supply voltageRT 3209 - (11)60602-0000.0000505.668-910 ≥ 6,5W≥ 10W13,75V27,5 V1.5 Technical data1.5.1 Power supply Nominal supply voltage 13.75 V.d.c.Supply voltage range 12.4 V to 15.1 VEmergency operation (10.0 V) Good intercomorNominal supply voltage 27.5 V.d.c.Supply voltage range 24.8 V to 30.3 VEmergency operation (20.0 V) Good intercomPower consumptionStandby" reception mode ≤ 100 mAReception mode ≤ 530 mATransmission mode ≤ 2.5 ART 3209 - ( )DV 60602.03/04 Issue 08/97 Page 1-3
1.6 General data Frequency range 118.000 MHz to 136.975 MHzNumber of channels 760Channel spacing 25 kHzStorage temperature range -55°C to +85°COperating temperature range as perEUROCAE/RTCA ED-14C/DO-160C -20°C to +55°C short-time +70°COperating altitude as perEUROCAE/RTCA ED-14C/DO-160C 50 000 ftVibration as perEUROCAE/RTCA ED-14C/DO-160C Cat. NMHumidity as perEUROCAE/RTCA ED-14C/DO-160C Cat. A/ +50°C: 95%, 48 h1.6.1 Dimensions Weight, FuseFront panel 139 mm x 50 mmDepth of transceiver with mounting plate 253 mmWeight 1,2 kgFuse internal 4 A automatic cut-outRT 3209 - ( )Page 1-4 DV 60602.03/04 Issue 08/97
1.6.2 Receiver data Type of receiver Single superhetrodyne receiverSensitivity ≤ 5 µV EMF for 6 dB = SINAD(mod. 1000 Hz/30%)IF bandwidth ≥ ± 8 kHz at 6 dB attenuationSelectivity ≥ 40 dB at ± 17 kHz≥ 60 dB at ± 25 kHzSquelch Can be adjusted and switched offAGC characteristic for5 µV to 100 mV EMF ≤ 6 dBDistortion m = 85% ≤ 15%Audio frequency response ≤ 6 dB 350 Hz to 2500 Hzrelative to 1000 Hz ≥ 18 dB at 4000 HzIntermediate frequency 21.4 MHzRated outputfor speaker operationat 13.75 V nominal operatingvoltage ≥ 3 W into 4 Ωat 10.0 V operating voltage (emergency mode) ≥ 1.5 W into 4 Ωwith headset connectedat 13.75 V nominal operating voltage ≥ 100 mW at 600 Ωat 10.0 V operating voltage (emergency mode) ≥ 30 mW at 600 ΩAudio auxiliary input 1 V to 8 V at 600 Ω ± 10%adjustable (regardless of volume)RT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 1-5
1.6.3 Transmitter data Transmitter output RT 3209 -(11) ≥ 10 W at 50 Ω at 27.5 V nominal operating voltage ≥ 10 W at 50 Ωat 20.0 V operating voltage(emergency mode)Transmitter output AR 3209 -(11) ≥ 6.5 W at 50 Ωat 13.75 V nominal operating voltage ≥ 2 W at 50 Ωat 10.0 V operating voltage(emergency mode)Frequency tolerance ≤ 15 ppmDuty cycle 1:4 (Min)Type of modulation A3E amplitude modulationModulation factor ≥ 70% to ≤ 99% (dynamiccompressor)Distortion at 70% modulation ≤ 15%Modulation bandwidth 350 Hz to 2500 HzFrequency response -6 dB (relative to 1 kHz/0 dB)Input voltage (m = 70%) Dynamic microphone ≤ 2 mV symmetrical 200 Ω(dynamic compressor) Standard microphone ≤ 120 mV 150 Ω(dynamic compressor)FM deviation with modulationm = 70% f = 1.25 kHz ≤ 3 kHzSidetone true, adjustableAutomatic shutdown on short after 2 mins of continuouscircuit of transmit button transmission, the transmittershuts down. Activated by releasingthe transmit button and re-pressing.RT 3209 - ( )Page 1-6 DV 60602.03/04 Issue 08/97
1.7 SoftwareThe frequency synthesizer and the frequency memory are controlled by a microprocessor.The associated software was classified as software level 2 in accordance with the guidelines ofEUROCAE/RTCA document ED12A/DO-178A:1.8 Approval and RegulationsLBA-No. 10.911/99JTSOBAPT-No.: A133570JRegulationsJTSO - 2C37d, ED-23A, Equipment Class 4JTSO - 2C38d, ED-23A, Equipment Class CEUROCAE/RTCA ED-14C/DO-160CBAPT FTZ 17TR2010Software EUROCAE/RTCA ED12A/DO-178A level 2Environmental condition D1-BA(MN)XXXXXXZBABATAXXXRT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 1-7
1.9 Environmental Qualification FormThe following performance standards under environmental test conditions have been established inaccordance with the procedures set forth in EUROCAE/RTCA Document No. ED-14C/DO-160C.Environmental condition ED - 14CDO - 160CCategory PerformanceTemperature 4.0 D1Low operating temperature 4.5.1 - 20° CLow ground survival(storage temperature)- 55° CHigh short-time opera-ting temperature4.5.2 70° CHigh operatingtemperature 4.5.3 + 55° CHigh ground survival(storage) temperature 85° CMin. operating pressure(equivalent altitude)4.6.1 50.000 ft.Temperature variation 5.0 BHumidity 6.0 A48 hrs at up to 50° C and95% relative humidityShock : 7.0Operational shocks 7.2 11 ms at 6 G for all threedimensional axesCrash safety shocks 7.3 11 ms at 15 G for all threedimensional axesVibration 8.0 MNMagnetic effect 15.0 ZDeflection of 1° of compass ata distance of ≥ 30 cmPower input variation 16.0 BThe equipment functions on a10-volt emergency powersupplyResistance to voltagespikes on equipmentpower leads17.0 AAudio-frequencyconducted susceptibility18.0 BSusceptibility to inducedmagnetic and electric •fields at 400 Hz19.0 ARadio-frequency interference susceptibility20.0 TSpurious RF emissions 21.0 ART 3209 - ( )Page 1-8 DV 60602.03/04 Issue 08/97
1.10 Scope of deliveryRT 3209 - (11) VHF transceiver Stock No. 0505.668-910Operating instructions Stock No.1.11 AccessoriesUnit connectionCable socket 25 pin Stock No. 0725.021.277Connector housing Stock No. 0775.479-277Antenna plug Stock No. 0725.706-277ManualsInstallation and Operation Stock No. 0511.560-071Maintenance and Repair Stock No. 0511.579-071RT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 1-9
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Table of contentsSection II INSTALLATION Seite2.1 General 2-12.2 Testing before installation 2-12.2.1 General 2-12.2.2 Visual examination 2-12.3 Mechanical installation 2-12.3.1 Mechanical installation of transceiver. 2-12.4 Installation wiring 2-22.4.1 General 2-22.4.2 Microphone connection 2-22.4.3 Speaker connection 2-22.4.4 Headphone connection 2-22.4.5 Intercom mode "IC connection". 2-32.4.6 Auxiliary" audio input 2-32.4.7 Setting the squelch sensitivity 2-32.4.8 Setting the sidetone volume 2-42.4.9 Internal automatic cut-out 2-42.5 Testing after installation 2-72.5.1 Ground test with engine shut down 2-72.5.2 Ground test with engine running 2-7Fig. 2-1 Internal automatic cut-out 2-4Fig. 2-2 Mounting dimensions transceiver 2-5Fig. 2-3 Interwiring of the transceiver RT 3209 - ( ) with control unit CU 5209 - ( ) 2-6RT 3209 - ( )DV 60602.03/.04 Issue 08/97 Page 2-I
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Section II INSTALLATION2.1 GeneralThe installation of the transceiver depends on the type of aircraft and its equipment. Therefore, onlygeneral information can be given in this Section.2.2 Testing before installation2.2.1 GeneralBefore installing the transceiver in an aircraft, inspect the unit for signs of transport damage.2.2.2 Visual examinationBefore commissioning, visually examine the unit paying particular attention to the following defects :1. Dirt, dents, scratches, corrosion or broken attaching parts, damaged paintwork on housing, partsof the housing .2. Dirt or scratches on the identification plate, or inscriptions.3. Dirt, bent or broken pins, displaced inserts of plugs and sockets.2.3 Mechanical installation2.3.1 Mechanical installation of transceiver.The transceiver is designed for installation in an avionics compartment. To do this, the mounting platemust first be secured to an appropriate point in the avionics compartment using five bolts. Theinstallation dimensions are given in Fig. 2-1. The transceiver is then pushed into the mounting plateand locked in place by two quick-release bolts.RT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 2-1
2.4 Installation wiring2.4.1 GeneralThe installation wiring is shown in Fig. 2-3.(a) Use only cable which is fit for use in aircraft (self extinguishing). AWG 20 for power supply andAWG 22 for other cables.(b) Fit rubber sleeves over the solder joints on the equipment connector.(c) Protect the power supply with a 7,5 A fuse or circuit breaker.NOTEThe transceiver is protected internally by a 4 A fuse.(d) No HF cables should be included in the cable harnesses of the system and the routing of connectingcables alongside cables which carry audio power or pulses should also be avoided.(e) Carefully check the wiring before switching on the unit and check particularly that (+) and (-) havenot been reversed.2.4.2 Microphone connectionThe transceiver enables a maximum of two dynamic microphones and two standard microphones (d.c.supply) to be connected at the same time. NOTEThe dynamic mike input sensitivity can be changed in the service mode.2.4.3 Speaker connectionA 4 to 8 Ohm speaker can be connected to audio output P2- Pin 1 AF-asym.CAUTIONThe magnetic field of a speaker influences the magnetic compass. When choosing themounting point, a minimum distance of 1.3 m must be maintained between the speakerand the magnetic compass.2.4.4 Headphone connectionUp to two headphones with an impedance of 600 Ohm can be connected to the audio output P2 -Pin 2 AF-HI/LO and Pin 3 AFLO.RT 3209 - ( )Page 2-2 DV 60602.03/04 Issue 08/97
2.4.5 Intercom mode "IC connection".The intercom mode is designed for aircraft with a high noise level and assumes operation usingheadsets. Additional wiring on the equipment connector with an IC switch is necessary (refer tointerwiring diagram).The normal R/T communication takes place with the IC switch in the OFF position. When the IC switchis set to ON, R/T communication can be carried on as before but intercommunication is also possiblebetween two crew members. The IC is switched off during transmission. The IC volume can be changedin the service mode.2.4.6 Auxiliary" audio inputThe AF-AUX (P2 Pin 4) auxiliary audio input enables the switching of audio signals from otherequipment in the aircraft. The switched-in audio signals can, however, only be monitored in thereception mode. The facility to switch two units together will be used particularly in those aircraft whichare fitted with a VHF transceiver and an NAV receiver. An audio input voltage of 1 to 8 V, 600 Ohm isnecessary for modulation of the audio amplifier (can be adjusted in the "Service" mode).2.4.7 Setting the squelch sensitivityThe sensitivity of the squelch can be directly set on the VHF transceiver at any time in the SqL functionservice mode.RT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 2-3
2.4.8 Setting the sidetone volumeThe sidetone volume can be directly set on the transceiver at any time in the SIDE function servicemode.2.4.9 Internal automatic cut-out The transceiver is fitted with an automatic cut-out . The released automatic cut-out is reactivated bymeans of a peaked object.Fig. 2-1 Internal automatic cut-out RT 3209 - ( )Page 2-4 DV 60602.03/04 Issue 08/97
Fig. 2-2 Mounting dimensions transceiverRT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 2-5
Fig. 2-3 Interwiring of the transceiver RT 3209 - ( ) with control unit CU 5209 - ( )RT 3209 - ( )Page 2-6 DV 60602.03/04 Issue 08/97
2.5 Testing after installation2.5.1 Ground test with engine shut down(a) After installation of the unit, measure the antenna tuning between the base of the antenna and theantenna connecting cable using a VHF reflection-coefficient meter (voltage standing wave meter).(b) The VSWR (voltage standing wave ratio) over the complete frequency range of the unit shall bewithin 3:1. If this matching value is incorrect, this indicates a mismatch, caused for example by anincorrect or unsatisfactory counterpoise, a cable with an impedance which deviates significantlyfrom 50 Ohm or an incorrectly tuned antenna.(c) After the antenna measurement, check the readability by carrying out a speech test with a groundstation.2.5.2 Ground test with engine running(a) With the engine running at cruising speed check that the aircraft power supply is within thepermissible tolerances.(b) When performing the succeeding speech test, ensure that the distance from the ground station isas great as possible, at least 100 m. With the engine at cruising speed, the cabin noise of theaircraft should be only slightly transmitted and communication should be clear and distinct. Holdthe microphone close to the lips when speaking.(c) Switch on the aircraft intercom using the IC switch (if fitted) and carry out a speech test with theengine running at cruising speed. If necessary, adjust the IC volume (refer to the service mode inthe operating instructions (section 3)).(d) Switch on the squelch switch and check the squelch function. The point at which the squelchoperates is set in the service mode (refer to operating instructions, section 3).RT 3209 - ( )DV 60602.03/04 Issue 08/97 Page 2-7
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