Becker Designed AR 3201 User's Manual
Contents
1. Apply squelch switch and check squelch function The squelch threshold can be set from without by means of the squelch control CAUTION In speaker operation no acoustic feedback should occur via the sidetone If necessary turn down sidetone by means of the SIDETONE control SIDE TONE O ic C SQUELCHO Fig 2 7 Location of IC control Page 2 8 DV 28110 03 04 Issue 04 92 BECKET AMIONIC SYSTEMS AR 3201 Table of contents Section 3 Operating Instructions 3 1 Control and Indicators 3 2 Operating instructions for serial no 0 to serial no 3999 3 3 Operating instructions serial no 4000 upwards 3 4 Storing frequencies 3 5 Setting the emergency frequency 3 5 1 Setting the emergency frequency on models with serial numbers up to 3999 3 5 2 Setting the emergency frequency on models with serial numbers of 4000 or above 3 6 LC display blinking 3 7 IC operation 3 8 Optional temperature voltage measurement 3 9 Auxiliary audio input optional standard as of module No 471 3 10 No channel freuency storage 3 11 Precautions Fig 3 1 Controls and indicators DV 28110 03 04 Issue 04 92 Page 3 1 3 3 3 4 3 4 3 5 3 5 3 6 2 BECKER AMIONIC SYSTEMS AR 3201 Blank DV 28110 03 04 Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 Section 3 Operating Instructions 3 1 Control and Indicators VOLUME CONTROL ON OFF SWITCH COMBINED WITH SQUELCH SWITCH STORE BU2. Panel illumination Receive stand by Receive stand by with auxiliary input Transmit Panel illumination Fuse Operating temperature range Env Cat RTCA DO 160A Altitude max Env Cat RTCA DO 160A Vibration Env Cat RTCA DO 160A Dimensions Panel Mounting depth Weight 1 5 2 Receiver specifications Type Receiver Frequency range Channels Channel spacing Sensitivity mod 1000 Hz 30 Bandwidth Selectivity DV 28110 03 04 Issue 04 92 12 4V 15 1V Intelligible communication typ 70 mA typ 90 mA typ 1 8 A 13 8 V 40 mA DC 5A D1 20 55 C shorttime temperature 70 C D1 50000 ft MNO 60 6 mm x 60 6 mm 212 5 mm 0 9 kg Single superhet 118 000 MHz 136 975 MHz 760 25 kHz lt 5uV emf for 6 dB S N N gt 8 kHz at 6 dB down 240 dB at 17 kHz 260 dB at 25 kHz Page 1 5 DECKER AMIONIC SYSTEMS AR 3201 Squelch AGC characteristic from 5uV 100 mV emf Undesired radiation Distortion m 85 Frequency response audio channel relative to 1000 Hz 0 dB Intermediate frequency Rated audio output Speaker Headphone Audio power output unregulated Auxiliary input 1 5 3 Transmitter specifications Transmitter output Mode of modulation Modulation depth Input voltage for m 85 dyn mike Standard mike Frequency deviation Undesired radiation Spurious emissions within the 108 117 95 MHz range P
3. 913400 e Due snu JN LNJINO QIUDU 348 ATRID 7 unu 822 559 Ela svoydsazi rusawaraxsa HOLIMS DI 7489 2U9S 5I 222 22b G8r with Speaker Junction Page 2 7 Fig 2 6 Wiring diagram AR 3201 DV 28110 03 04 Issue 04 92 DECKER AMIONIC SYSTEMS AR 3201 2 6 Testing after installation 2 6 1 Ground testing with engine OFF After installing the transceiver measure antenna matching between antenna base and antenna feeder by means of a VHF reflection meter voltage standing wave meter Over the complete frequency range of the transceiver the voltage standing wave ratio must be within the value 3 1 Exceeding this value is an indication of mismatch which can be due to a wrong or inadequate counterweight After antenna measurement carry out a voice test with the ground station 2 6 2 Ground testing with engine ON With the engine running make sure that the aircraft voltage is within the permissible tolerances at approx 14 V Make the test at engine cruising speed Carry out speech test at a long distance away from the ground station At engine cruising speed the cabin noise of the aircraft must only be heard muted thus making for clear intelligible conversation Hold microphone close to lips when speaking Switch on intercommunications by means of the IC switch when provided and carry out speech test at engine cruising speed If necessary correct volume by means of IC control see Fig 2 7
4. Only use shielded flexed leads noting the color coding of the connecting cables The red lead must be connected to J 3101 8 the blue lead to J 3101 2 The shielding must be connected to pin 4 of J 3101 DV 28110 03 04 Issue 04 92 Page 2 1 DECKER AMIONIC SYSTEMS AR 3201 The temperature measuring circuit in the VHF transceiver and the temperature sensor are calibrated in the factory together for optimum temperature measuring accuracy Should the device g the temperature sensor develop a fault or should the transceiver need replacing the device will need recalibrating according to the instructions as given in Section 5 Item 5 7 2 4 Installation wiring 2 4 1 General Fig 2 5 illustrates the installation wiring of the VHF transceiver In wiring the VHF transceiver the battery voltage feeder cable should be AWG 20 NOTE a Only use airworthy cable i e self extinquishing in suitable AWG for power supply and the other lines b Pull rubber sleeves over the solder juctions on the instrument connector c A3A fuse or circuit breaker must be incorporated in the power supply d Prior to switching on the unit carefully check the wiring particularly making sure that ve and ve are not confused CAUTION The AR 3201 is only protected against wrong polarity when a fuse is incorporated in the power supply i e so that the fuse blows leaving the unit undamaged If no fuse is provided the unit can be ruined In this case
5. automatically switches to the emergency frequency 121 500 MHz when the channel selector is positioned to A in switching the transceiver on To quickly switch to the emergency frequency in an emergency situation best procedure is to switch the channel selector to A and to briefly switch the transceiver off on after which the transceiver operates on the emergency frequency of 121 500 MHz Under normal operating c onditions this can be set by means of the frequency selector switches Another possibility is to store the emergency frequency directly in one of the four available channels 3 5 2 Setting the emergency frequency on models with serial numbers of 4000 or above In models with serial numbers of 4000 or above the emergency frequency 121 500 MHz does not automatically appear when the channel selector switch is in position A and the transceiver is powered up It is recommended to store the distress frequency in one of the 4 memory locations In models with serial numbers of 4000 or above an arrow flashes on and off in the LCD during transmission This is activated by the microprocessor which outputs the instruction for this along with the other data for the liquid crystal display Page 3 4 DV 28110 03 04 Issue 02 92 BECKER AMIONIC SYSTEMS AR 3201 3 6 LC display blinking As soon as the operating voltage for the transceiver drops to a value of 10 5 V to 11 V the display starts blinking to signalize e g in battery operation that
6. strength The switching threshold is adjustable from without through the case The squelch can be defeated with the squelch switch The transmitter has wideband tuning over the range 118 000 MHz to 136 975 MHz Transmitter output power is greater than 5 watt In transmitter operation sidetone is automatically on In transceiver with serial No of 4000 and above an arrow flashes on and off in the upper left side of the LCD during transmission The injection frequency of the receiver and the transmit frequency of the transmitter are generated by a voltage controlled oscillator VCO which is signalled by a digital frequencysynthesizer in conjunction with a microprocessor The microphone input is designed for a dynamic microphone or for a standard microphone the transceiver being infactory set for a dynamic microphone Conversion to a standard microphone is done in transceivers up to serial No 86 by resoldering a jumper on the soldering side of the audio module As of serial number No 86 the conversion is made by reconnecting a wire jumper on the component side of the audio module The microphone input is connected to a dynamic compressor which maintains the modulation depth constant over a microphone input voltage range of approx 40 dB The frequency indication is a liquid crystal display LCD The MHz and kHz frequency selectors permit selection of the desired channel frequency The MHz frequency selector indexes in steps of 1 MHz the kHz freq
7. the following procedure to establish whether they have been damaged in transit 2 2 2 Visual inspection Prior to commissioning the equipment carry out a visual inspection to establish any of the following deficiencies 1 Soilage dents scratches corrosion broken fasteners damaged paintwork on enclosures and parts thereof 2 Soilage and scratches on the nameplate front panel and markings 3 Soilage bends or broken off pins cracked plug and socket inserts 4 Soilage and mechanical damage to rotary switches LCD elements knobs and pushbutton 2 3 Mechanical installation 2 3 1 Mechanical installation VHF transceiver The VHF transceiver is designed for incorporating in an aircraft instrument panel in behind panel installation The circular cutout and the fastener holes must be drilled in accordance with the standard for small size instruments Location must be min 30 cm away from the magnetic compass of the aircraft to avoid the compass being affected by the transceiver Dimensional requirements are shown in Fig 2 4 Four DUZ fasteners supply are used to secure the unit 2 3 2 Mechanical installation of a temperature sensor The VHF transceiver permits indication of temperatures in the range 20 C to 100 C with the aid of an integral measuring circuit and a connected remote temperature sensor The latter is located in accordance with the particular requirements and local conditions The wiring can be seen from Fig 2 5
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9. 04 General Information X x x ee Maintenance and Repair Illustrated Parts List Modification and Changes EX 1 2 Purpose of equipment The VHF transceiver permits transceiver communication on 760 channels in the frequency range 118 000 MHz to 136 975 MHz with a channel spacing of 25 kHz It can also be limited to 135 975 MHz 720 channels by incorporating a different PROM Extensions for additional modes such as temperature and operating voltage measurements etc are provided for The VHF transceiver is physically designed for unrestricted application in category II aircraft In the environmental categories there is no limitation for application in the instrument panel and for use in DV 28110 03 04 Issue 04 92 Page 1 1 DECKER AMIONIC SYSTEMS AR 3201 rigid fuselage mounting in all aircraft The VHF transceiver is designed for compliance with RTCA and EUROCAE airworthiness requirements 1 3 General description The VHF transceiver is designed as a single block unit with dimensions in keeping with 58 mmdiameter standard instrument size Mounting is by means of four screws behind panel fitting All controls and indicators are located on the front panel The rear panel locates the connector for connecting the transceiver to aircraft wiring the antenna socket and a test connector The transceiver features a single superhet receiver A squelch circuit suppresses noise and input signals below a specific field
10. BECKER AVIONIC SYSTEMS VHF Transceiver AR 3201 Installation and Operation Manual DV 28110 03 Issue 1 April 1992 BECKER FLUGFUNKWERK GMBH Baden Airpark B 108 D 77836 Rheinm nster Telephon 49 0 7229 305 0 E Mail info becker avionics de or support becker avionics de FIRST ISSUE AND CHANGES April 1992 LIST OF EFFECTIVE PAGES Title 1 1 1 1 1 1 1 8 2 1 2 11 2 1 2 8 3 1 3 1 3 1 3 6 8 1 8 Il Annex 1 to 27 Copyright by Becker Flugfunkwerk All rights reserved BECKET AMIONIC SYSTEMS AR 3201 Table of contents Section 1 1 1 Introduction 1 2 Purpose of equipment 1 8 General description 1 4 Variants survey 1 5 Specifications 1 5 1 General data Transceiver 1 5 2 Receiver specifications 1 5 3 Transmitter specifications 1 5 4 Optional functions 1 6 Certification 1 7 Accessories 1 8 Scope of delivery 1 9 Software DV 28110 03 04 Issue 04 92 GENERAL INFORMATION Page 1 1 1 1 1 2 1 3 1 5 1 5 1 7 1 7 1 8 1 8 EI BECKER AMIONIC SYSTEMS AR 3201 Blank DV 28110 03 04 Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 Section 1 GENERAL INFORMATION 1 1 Introduction The following Handbooks describe the VHF communications transceiver AR 3201 The Handbooks DV 28110 03 Installation and Operation and DV 28110 04 Maintenance and Repair contain the following sections Section DV 28110 03 DV 28110
11. HH PHONE Ug SWITCHED EIE deal PTT KEY Kar X 1 me 43103 4re GROUND INTERRUPT BR DATA EXCHANGE CONTROL DE DATA OUTPUT ENABLE DISPLAY CLOCK SYNTHESIZER CLOCK DISPLAY z 4 SNABLE SYNTHESIZER DATA INPUT el CONNECTOR WIRING SIDE SENSOR LINE 2 9 1 RED SoaopooooG BY el senaa spare i m SOUR DA 198 SENSOR LINE 1 a eet GROUND tea osonva CONTROL LINE KEY 2 EXT 1 La gf 020034 LES GROUND S PUSHBUTTON SOURIA 04 5 P CONTROL LIN KEY 1 est 30 TS D UNLESS OTHERWISE SPECIFIED USE AWG 22 FOR INTERCONNECT WIRING ED FOR BALANCEO CONNECTIONS USE A DAS P TWISTED PAIR SHIELOEO WIRE TH Pay ATTENTION TO NOTES GIVEN IN SECTION 246 OF SHEET 24 Fig 2 5 Aircraft wiring Page 2 6 DV 28110 03 04 Issue 04 92 AMIONIC SYSTEMS AR 3201 BECKER PRUSO FP ON ON HMIOLS JN IL9389H 20n220 uou 7 20 N OQUOUY FLA Zen U QUOVOU92UI UNGIBINUSDO Bf NO SCO ME 2Uay UNH H LH NO119ANNOD ONST SI HOLIMS DI ON JI di3dwar ane sed aney_uolzsauol 35 eseg gp e6b gyeo IAP BPEJLI B Inod pJDQ B 2 989 L943 7 PUN N 949 QUOU JOJJQUOS DI ULOH BLLES OVONJE D XO8 NOLIINIf ADHIAHS Pue WOOT DNIJIM DISHB ULIN IQ2E2 EJ LEO SNIMIM Sua SIL Duno J428 2342A4 aa2uaaads4n pun zyesjaqey ona tu TQIENH Gun age JJBAPJOB 7062QUOU NO SJD Q212O9092J 241 UYAM W E I OR OWIULU QOUP3SIP QUI SROMOD DILOA BOUSNI JU sN Jec INeY VOLZIUOL BO 2310G Bs20A op ONbiQOUbew deu 91 UGI LUIH iNOLLU20 HR S9NIIO3T38 NGHM
12. TTON LC FREQUENCY AND TRANSMIT FING DISPLAY kHz FREQUENCY SELECTOR SWITCH MHZ FREQUENC Y SELECTOR SWITCH Fig 3 1 Controls and indicators Volume control Potentiometer Turning control clock wise increases volume continuousiv ON OFF switch combined with 3 position rocker switch Postion OFF squelch VHF transceiver OFF Position ON VHF transceiver ON squelch OFF input noise audible Position SQL Transceiver ON Squelch ON Input limited to transmitters having a field strength exceeding the set squelch threshold DV 28110 03 04 Issue 02 92 Page 3 1 BECKER AMIONIC SYSTEMS AR 3201 Channel selector 5 position rotary switch Position A When the transceiver is powerd up a brief test routine is performed for the segments of the display Afterwards the channel frequency 121 500 MHz appears in the display and the transceiver is ready for operation In models with serial no of 4000 or above the moste recently set frequency instead of 121 500 MHz The setting of channel frequencies is performed with the channel selector switch in position A regardless of the units serial number Position 1 through 4 If is wished to store a channel frequency in any one of the four memory locations then channel frequency to be stored must first be set with the frequency selector switch in position A Then the desired memory location is selected using the channel selector switch and the Store butto
13. age 1 6 fixed in unit defeatable with squelch switch lt 6 dB lt 4 x 10 watt lt 10 lt 6 dB 350 Hz 2500 Hz gt 18 dBat 5000 Hz 21 4 MHz at 13 8 V operating voltage gt 2 5 watt into 40 typ 3 watt at 10 0 V operating voltage gt 1 5 watt into 4 0 at 13 8 V operating voltage gt 40 mW into 300 Q at 10 0 V operating voltage gt 30 mW into 300 Q 100 mV 30 mod Ri gt 10kQ 1 V eff 600 Q at 13 8 V operating voltage gt 5 watt at 10 0 V operating voltage Emergency operation gt 2 watt amplitude modulation A3E 2 85 lt 100 dynamic compressing no overmodulation at input voltages ca 2mV Dynamic Compressor ca 200 mV Dynamic Compressor lt 0 002 lt 2 5x 10 watts 2 x 10 7 watts DV 28110 03 04 Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 Frequency response lt 6 dB 350Hz 2500 Hz Distortion m 85 1000 Hz lt 10 m 85 350 1000 Hz lt 20 Carrier noise level gt 35 dB 1 5 4 Optional functions Digital voltmeter operating voltage indication 7V 35VDC 0 1V Ditial thermometer 20 4100 C Temperature sensor Linear tolerance 1 5 C NOTE The VHF transceiver is designed for the frequency range 118 to 137 MHz The frequency range between 136 MHz and 137 MHz may not be used for mobile aircraft radio communications until after January 1990 in accordance with the relevant regulations 1 6 Certification FTZ certification LB 393 83 LBA certif
14. age 3 3 DECKER AMIONIC SYSTEMS AR 3201 selector switch is in position A If the channel selector switch is set to one of the stored channel frequencies any one of switch positions 1 through 4 then the channel frequency stored in that memory location will appear in that display If any other channel frequency is desired other than those channel frequencies stored then the channel selector switch should be set to positionA whereupon the desired frequency can be set using the MHz and kHz frequency selector dials 2 Repeat steps 2 through 6 of Section 3 2 3 4 Storing frequencies Four memory locations are available for channel frequencies each of these can be used to store any channel frequency used for aircraft communications They can be used in any desired order To store proceed as follows a Switch the channel selector switch to position A b Use the MHz and kHz rotary switches to set the desired channel frequency c Set the channel selector switch to the desired memory location d Press the store button For models with serial nos of 4000 or above the STORE button must be held depressed for approx 2 seconds NOTE When overwriting a stored channel frequency the same procedure as listed in steps a through d should be followed 3 5 Setting the emergency frequency 3 5 1 Setting the emergency frequency on models with serial numbers up to 3999 As already described in the operating instructions the transceiver
15. function At a distance of 5 10 km from the ground station however the connection will doubtlessly fail Transceiver communication contact should always be conducted using a clear loud voice and by speaking directly into the microphone Otherwise cabin background noise could predominate making the message inaudible Use suitable microphones or headset for aircraft only With certain aircraft types wood orfibre glass aircraft gliders and helicopters the signals transmitted by the unit s antenna may be picked up and enhanced by the integrated microphone amplifier feed back As a result the signal received by the flight control will be superimposed by whistles and or strong distortion This phenomenon may not necessarily remain constant for all channels The PTT button of the microphone or control unit might jam causing the system to remain in the transmission mode In order to rule such cases out please ensure that the arrow in the frequency display from serial no 4000 onwards illuminates during the transmission mode and extinguishes when the PTT button is released Page 3 6 DV 28110 03 04 Issue 02 92
16. g 2 5 Fig 2 6 Fig 2 7 BECKET AMIONIC SYSTEMS AR 3201 Table of contents 2 INSTALLATION General Pre instailation check General Visual inspection Mechanical installation Mechanical installation VHF transceiver Mechanical installation of a temperature sensor Installation wiring General Microphone connection Speaker headphones connection IC connection Panel lighting Auxiliary audio input optional standard as of module No 471 Testing after installation Ground testing with engine OFF Ground testing with engine ON Jumpers location for charging the microphone input from dynamic to standard microphone Panel connection Auxiliary audio input Dimensions of VHF transceiver Aircraft wiring Wiring diagram AR 3201 with Speaker Junction Location of IC control DV 28110 03 04 Issue 04 92 Page 2 1 2 1 2 1 2 1 2 1 2 1 2 2 2 3 2 3 2 3 2 4 2 8 2 8 2 8 2 4 2 5 2 6 2 7 2 8 2 l 2 Il BECKER AMIONIC SYSTEMS AR 3201 Blank DV 28110 03 04 Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 Section 2 INSTALLATION 2 1 General Installation of the VHF communication transceiver and the battery box depends on the type of aircraft and equipment involved the instructions given in this section thus being only generally applicable 2 2 Pre instailation check 2 2 1 General Prior to fitting the new system in the aircraft the units must be checked according to
17. hone with an impedance of 3000 6000 or both in parallel without having to switch the transceiver over CAUTION The magnetic field of the speaker will affect the compass therefore minimum spacing between speaker and compass must be 1 3 m when selecting speaker location 2 4 4 IC connection The IC connection is provided for aircraft with high ambient noise and requires use of the headset together with an IC switch in the unit connector for the additioning wiring see aircraft wiring Fig 2 4 The normal communications position is the OFF position of the IC switch i e in the ON position communications operation is the same as before however with intercommunication between the two crew members without having to press the PTT button 2 4 5 Panel lighting The transceiver features a panel lighting circuit which must be connected to the 14 V supply voltage by connection P 4101 7 or to a dimmer control It is good practice to provide the lighting externally via a separate lighting switch to save current in aircraft having no power system e g gliders CAUTION The lighting is not switched off on operation of the ON OFF switch DV 28110 03 04 Issue 04 92 Page 2 3 DECKER AMIONIC SYSTEMS AR 3201 ILLUMINATION 14 y OPERATING VOLTAGE 1 e ILLUMINATION 14 V EXTERNALLY LIGHTING SWITCH Fig 2 2 Panel connection 2 5 Auxiliarv audio input optional standard as of module No 471 The auxilia
18. ication 10 911 76 Specification RTCA DO 156 RTCA DO 157 RTCA DO 160A EUROCAE ED 23 ED 24 ED 14A Performance classification D1 AMNO XXXXXXABABA 1 7 Accessories The following connectors are necessary for connecting the transceiver without options 1 Cable connector plug for transceiver Order No 430 722 277 Antenna connector plug UG 88 U for transceiver Order No 725 706 277 IC Switch Order No 213 055 278 DV 28110 03 04 Issue 04 92 Page 1 7 DECKER AMIONIC SYSTEMS AR 3201 When the transceiver incorporates the temperature or voltage measurement option the following items are required 1 Cable connector complete Order No 431 036 950 Detail parts 1 Cable connector plug for option Order No 710 687 277 Temperature sensor 65 C 150 C Order No 431 044 955 Bounceless pushbuttons Order No 724 742 278 1 8 Scope of delivery Screw block Order No 472 875 203 Spring washer Order No 213 126 213 1 9 Software Frequency synthesizer frequency storage and frequency display of the AR 3201 are controlled by a microprocessor The software used has been categorized to Function Criticality Category ESSENTIAL accordirig to the guide lines of RTCA DO 178 Uses elass was determined to be CLASS X Page 1 8 DV 28110 03 04 Issue 04 92 Section 2 1 2 2 2 2 1 2 2 2 2 3 2 3 1 2 3 2 2 4 2 4 1 2 4 2 2 4 3 2 4 4 2 4 5 2 5 2 6 2 6 1 2 6 2 Fig 2 1 Fig 2 2 Fig 2 3 Fig 2 4 Fi
19. ltage indication 3 9 Auxiliary audio input optional standard as of module No 471 Via the auxiliary audio input other radio equipment e g navigation receiver can be monitored When the system is wired up for this application the volume control of the remote equipment must be set so that these inputs are intelligible and can be differentiated from each other During transmission the auxiliary input from the audio output amplifier is OFF 3 10 No channel frequency storage When the stored frequencies are lost when the transceiver is switched off first measure the battery voltage at the two button batteries which must be 2 4 V These batteries are automatically charged when the transceiver is switched on When the unit is not switched on for a long time or in lengthy storage the batteries may become discharged To recharge the battery it is sufficient to simply connect the transceiver to the aircraft voltage for a couple of hours The service life of a new battery is between 3 and 5 years DV 28110 03 04 Issue 02 92 Page 3 5 DECKER AMIONIC SYSTEMS AR 3201 3 11 Precautions In order to secure a reliable transceiver operation please note the following precautions a b e Qa L Before running up the engines ensure that the transceiver is switched off Always conduct a verbal pre flight check Note that in the vicinity of a flight control a broken or shorted antenna cable must not necessarily impair the
20. n is pressed Stored channel frequencies remain in the memory even when the unit is powered down and can be immediately called up again after the unit has been switch on MHz frequency selector switch Rotary switch continuous Switches the MHz steps indicated by the frequency readout kHz frequency selector switch Rotary switch continuous Switches the 25 kHz steps indicated in the frequency readout The 3rd digit behind the point is not indicated e g 125 52 125 525 MHz Frequency indication LC display 5 digits When the unit switched on following completion of the self test routine the frequency appers in the display on which the unit is ready to operate During transmission in models with serial no 4000 or above arrow also flashes on and off Page 3 2 DV 28110 03 04 Issue 02 92 BECKER AMIONIC SYSTEMS AR 3201 Store button Pushbutton Briefly pressing the STORE button causes the display frequency to be stored in one of the four memory locations provided that the channel selector switch is not in position A but set to one of the four memory positions 1 4 In models with serial no of 4000 or above the STORE button must be held depressed for approx 2 seconds in order for the displayed channel frequency to be written into the selected memory location 3 2 Operating instructions for serial no 0 to serial no 3999 NOTE Switch off transceiver when engines are started or stopped 1 Switch
21. on VHF transceiver with ON OFF switch For a few seconds the LC display reads 188 88 display test The transceiver then automatically switches to 121 500 MHz emergency frequency when the channel selector is in position A When it is positioned to one of the stored channel frequencies switch position 1 4 the display reads the stored channel frequency To select a channel frequency other than the stored channel frequencies position channel selector to A and then set the desired frequency by means of the MHz and kHz frequency selector switches 2 Set to frequency of local ground station and position VOL control to center position 3 Operate PTT key and call ground station For optimum intelligibility keep microphone dmost touching lips 4 On response from the ground station adjust for desired volume using VOL control 5 Position ON OFF switch to SQL to suppress weak input signals and input noise 6 The sidetone volume can be adapted to the noise level of the aircraft by means of the sidetone volume control 3 3 Operating instructions serial no 4000 upwards NOTE Switch off transceiver when engines are started or stopped 1 Use the ON OFF switch to turn on the VHF transceiver For a few seconds the digits 188 88 will appear in the LCD display test as well as an arrow to indicate transmission mode Afterwards the VHF transmitter automatically switches to the most recently set frequency if the channel DV 28110 03 04 Issue 02 92 P
22. r is switched on Should the aircraft supply voltage drop to 11 V 10 5 V the readout will commence flashing For operation on an 28 V aircraft system a voltage regulator VR 2011 is necessary In aircraft with no power circuit gliders the battery box BK 5 is provided When using the emergency power unit EPU 400 the transceiver can be continued to be operated at reduced output power 12 V operating voltage even when aircraft power is down When operating the IC mode the transceiver can be used for intercommunications The auxiliary audio input permits input of audio signals from other equipment in the aircraft however these auxiliary audio input is standard as of module No 471 Up to module No 470 this feature was only available as an option If LCD illumination is required it can be connected either directly to the operating voltage or to a dimmer The standard version can be extened by optional voltage and temperature measuring facilities without affecting the airworthiness of the transceiver An optional voltage and temperature measurement circuit permits measurement of either two different voltages or two different temperatures or a single voltage and a single temperature with the aid of two corresponding sensors and two external pushbuttons The LCD provides indication on pressing the external pushbuttons for approx 4 seconds Temperature can be indicated in Fahrenheit or Celsius 1 4 Variants survey Table 1 1 surveys
23. ry audio input permits audio input from other equipment in the aircraft This input can only be heard however in the RX mode The possibilitv of circuiting two units together finds application in aircraft having for instance only one transceiver and one NAV receiver When using the auxiliary audio input a 6800 resistor must be switched to GND When circuiting units together 100 decoupling resistors must be included see following diagrams Output of the audio listening amplifier requires an audio input voltage of approx 1 V 6000 P4101 MF Ausgang NAY AUDIO OUTPUT NAY DR em NF Ausgong MAN A UTPUT WOR UDI NAY NF ALZgang ADF AUDIO QUTPUT ADF 660R fOOR Fig 2 3 Auxiliary audio input Page 2 4 DV 28110 03 04 Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 Hin er Panel Montage BACK PANEL MOUNTING 60 6 20 1mm 2 3 0 2mm 2 9867 20 9047 1 862 20 008 Smm 04387 U 3 E G A SL SCH I Y x 212 5 mm WIKI TAS 198 Smm 1815 Fig 2 4 Dimensions of VHF transceiver DV 28110 03 04 Issue 04 92 Page 2 5 DECKER AMIONIC SYSTEMS AR 3201 TRANSCEIVER ANTENNA 12 69 35 1 POWER SUPPLY AUX ALI MAUT B x AUDIO GROUND Tlag GM E rare A SPEAKER q AUDIO QUTAUT 35 s i Ic OFF IE CONTROL LINE nl 13 ME jil A JON oT ses TRANSMIT CONTROL LINE m 12 ES gt 9 PIT KEY HIKE GROUND lL MIKE INPUT ki GROUND AUG UNCONTROLLED
24. the batteries need recharging The display will start blinking in transmitter operation since this situation involves the highest current drain Since the discharge curves of batteries greatly depend on the type of batteries involved e g lead acid or nickel batteries and on the ambient temperature of the batteries no accurate indication can be given as to how long the transceiver will remain fully functional on commencement of LC display blinking After a few keying cycles the batteries can be empty in transmitter operation In receiver operation the instrument will remain functional for approx 1 2 hours from commencement of blinking At an operating voltage of 10 V the transceiver remains fully functional but at reduced output power 3 7 IC operation 1 Switch on IC switch 2 Carry out speech test 3 IC volume can be adapted to the noise level of the aircraft by means of the IC volume control see Fig 2 7 3 8 Optional temperature voltage measurement When the standard version is supplemented by optional temperature and voltage measurement circuits note Temperature of voltage is measured continuously whereas display follows only after pressing the external pushbutton for approx 4 sec after which the previously set channel frequency appears NOTE Independent of the temperature or voltage measurement transceiver operation is available at the set channel frequency even when the instrument is displaying a tempe rature or vo
25. the unit is not covered by our guarantee Suitable type cable sets are available for aircraft wiring contact manufacturer CAUTION Never tie any aircraft wiring into the connecting lines In addition the connecting cable must not be put down together with line carrying pulsed information IFC s DME XPR SLAVED GYRO the same applying to autopilot supply and control lines 2 4 2 Microphone connection The VHF transceiver features a microphone amplifier as standard which is compatible with both a dynamic microphone and a standard microphone Unless stated otherwise the transceiver is set in the factory for a dynamic microphone connection By resoldering jumper Br 4001 on the audio module the microphone input can be changed from a dynamic microphone to a standard microphone This jumper is accessible after unscrewing the case and removing the audio module As of serial No 86 conversion from dynamic to standard microphone has been simplified jumper 4401 then no bnger requiring resoldering but merely reconnecting without requiring removal of the audio module Page 2 2 DV 28110 03 04 Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 View showing components side of audio module Standard Mike Dyn Mike N Fig 2 1 Jumpers location for charging the microphone input from dynamic to standard microphone 2 4 3 Speaker headphones connection The audio output of the transceiver is compatible with a 4Q speaker or headp
26. the variants of transceiver AR 3201 The various variants are not different in appearance i e dimensions case depth etc being the same for all variants The necessary accessories are given in the List of Accessories at the end of Section 1 for the various variants all of which have no effect on airworthiness of the transceiver DV 28110 03 04 Issue 04 92 Page 1 3 Transceiver AR 3201 Drawing No Order No 281 10 00000 000 389 528 910 28111 00000 000 397 156 910 28112 00000 000 397 164 910 28113 00000 000 397 172 910 28114 00000 000 397 180 910 28120 00000 000 767 018 910 28121 00000 000 767 026 910 28122 00000 000 767 034 910 28123 00000 000 767 042 910 28124 00000 000 767 050 910 Page 1 4 BEC KER AMIONIC SYSTEMS AR 3201 Voltage Tamperature Temperature measurement measurement measurement in deg Celsius in deg Fahrenheit AR 3201 1 AR 3201 2 AR 3201 3 AR 3201 4 AR 3201 10 AR 3201 11 AR 3201 12 AR 3201 13 AR 3201 14 yes yes yes two different temperatures yes two different temperatures Table 1 1 yes yes two different temperatures yes two different temperatures DV 28110 03 04 channel channel Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 1 5 Specifications 1 5 1 General data Transceiver Operating voltage Emergency operation 10 0 V Current consumption 14 V without
27. uency selector in 25 kHz steps The transceiver also contains a memory for storing four different channel frequencies even when the transceiver is OFF The stored frequencies are called up by the channel selector switch in positions 1 4 In switch position A a further channel frequency can be set which is however lost when the transceiver is switched off In transceiver with serial No fo 4000 or above the channel frequency set in position A is also stored and not deleted when the unit is powerd down In addition when the VHF transceiver is powered up a Self test function is automatically activated to test the LCD For a period of a few secounds all of the segments in the LCD flash on 188 88 Aterwards either the frequency 121 5 MHz appears channel selector switch in position A or one of the 4 stored frequencies depending on the position of the channel selector switch The VHF transceiver is now ready for operation In Transceiver with serial No of 4000 or above either the most recently set frequency in channelA appears or one of four stored frequencies depending on the position of the channel celector switch When the self test function is activated an arrow flashes on and off in addition to the digits 188 88 lt 188 88 Page 1 2 DV 28110 03 04 Issue 04 92 BECKER AMIONIC SYSTEMS AR 3201 The transceiver also contains a stage for monitoring the aircraft supply voltage This stage is ON as soon as the transceive
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