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RT-1000 User Manual

1. Sms 1 V R L signal Channels Sms 5 V Ch1 1 V T div 5ms Ch2 5 V Trig 52div CHAN 2 x H H d Amplitudes of clockwise rotation blocks or counter clockwise rotation blocks pump The amplitudes of the clockwise rotation blocks and counter clockwise rotation blocks are different Possible causes Effect of reflection Extreme flight manoeuvres of the calibration aircraft Jamming transmitter on same channel e Amplitude of R L blocks is very large Effect of reflection It is not possible to list all the possible disturbances and influences of direction finding signals here As a rule it is assumed that if the direction finding signal is undisturbed the bearing shown by the controller is correct If the direction finding signal is observed during the complete circular flight this provides a very good indication of the quality of the direction finding This applies also for the azimuths at which no measur ing points were recorded 4 21 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 4 4 3 2 Evaluation of QDR Live Display Green Light Dot Circle Th
2. antenna o Geet controll 6 wire telephone cable cabe M TO RO ET E W A g T v d RS 232 amp audio max length 10m Slave Display RTS 1100 A 14 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 1 1 5 Configuration C System configuration like 1 1 4 but with additional modem which makes it possible to bridge a distance between controller and slave display up to 10 km Application The cable distance between the controller and slave display is longer than 10 m Controller RTC 1100 A DF Antenna Receiver Unit RTA 1300 A RTR 1200 A antenna 4 control 6 wire data cable D o max 10 km RF cable with modem and 6 wire cable max length 10km Slave Display RTS 1100 B 1 5 RHOTHETA Elektronik GmbH 1 1 6 Configuration D User Manual RT 1000 Rev 2 01 The bearing data and the remote control has to work over long distance via Intranet or Internet Application DF Antenna RTA 1300 A if DF location is far awa
3. Fig 4 7a RTA 1300 A Direction Finder Antenna 4 12 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 11 18 Fig 4 7b RTA 1300 A Direction Finder Antenna bottom view RHOTHETA Elektronik GmbH 4 3 Assembly Instructions 1 Fit O ring on mast tube see Figure 4 8 2 Pull antenna cable through mast tube 3 Connect RF cable 4 Screw cord grip tight to clamp RF cable 5 Plug the control cable into the connection board Push back guard sockets User Manual RT 1000 Rev 2 01 O ring Using pointed flat nose pliers grip the flat plug covers and push fully onto the flat plugs Push guard sockets back on again X22 X19 RF connection X15 Cord grip tight X17 Connection board X13 X21 Fig 4 9 Allocation of connections Allocation of connections Fig 4 8 Fitting O ring Connection ground brown Connection west signal orange Connection east signal yellow Connection south signal green Connection north signal black Connection 15 V voltage red Flat plug name Control cable color X22 GND brown Earth X13 NORTH black North dipole control current X17 SOUTH green South dipole control current X15 EAST yellow East dipole control current X
4. 2 23 2 3 11 Frequency Deviation 2 23 2 3 12 Error IndiCatloh EE 2 23 2 3 13 Dimmer 01 DIN een nee 2 24 2 3 14 Volume Control 09 coo eiie oco arredo c cce ke 2 24 2 3 15 Headphones Connection 10 2 24 2 3 16 STANDBY Indicator 11 c u L 2 24 2 3 17 OFF Switch 12 EEN 2 24 2 3 18 Line Mains Switch 15 l u uuu uu u 2 25 2 3 19 Power Supply OK Indicator 19 J u u u u u 2 25 2 3 20 Data Port Data Interface 20 u 2 25 2 3 21 Sync Synchronisation Indicators 21 22 2 27 2 3 22 DF Signal 2 Test Plug CT EE 2 27 2 3 23 R L Test Connector 23 EEN 2 27 2 3 24 Ser Port Serial Interface 28 2 27 2 3 24 1 ee ee LIE 2 29 2 3 24 2 Data Inp Ut panissa aniani kaskkuaywkuypaqrubappawausaxhusyhyasyanwyapappasau anhasyhpssa 2 31 2 3 24 3 Technical Data 2 cs anna 2 32 2 3 244 Ser Port Plug Wiring 28 l l u u u u u 2 32 2 3 24 5 Connection to a Data Te
5. 400 x 3400 mm Weight antenna 3 0 kg Weight antenna including antenna rods 3 8 kg Weight antenna complete with mast an lightning rod 10 2 kg 1 8 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Lateral thrust due to wind with constant wind speed 150 km 7 NEE approx 135 N 180 km 7h daret uta ed approx 195 N data with lightning rod and mast 1 2 3 4 Notes Depend on the software configuration Not for configuration B dependent on the type of receiver For undistorted wave reception and sufficient field strength Measurement is made with continues vertical polarised signal without modulation at constant frequency by changing the angle of incidence in order to exclude site errors angle variation is done by rotating the DF antenna on a rotator With Option bearing precision improvement System sensitivity for 1 bearing fluctuations cable attenuation of less than 2 dB between antenna and the receiver received signal vertically polarised 1 9 RHOTHETA Elektronik GmbH 1 3 1 4 Supplied Accessories Set of antenna cables AC cable Operating instructions Adapter for rack installation of controller Interface connector Antenna rod Lightning rod Options Special antenna mast Mast extension S Hazard light Dummy antenna Service kit Service manual Sl
6. l l u u 3 10 3 2 7 Setting the Receiver u Aa S Sa S u Aa usss 3 11 3 3 Using the RTR 1200 Receiver Unit J J 3 12 3 3 1 Switching on the Receiver Uni t l 3 12 3 3 2 Switch on Reaction Operation Control Equipment 3 12 3 3 2 1 Receiver Self test l u u u u T T 3 12 3 3 2 2 Power Supply OK Control Lamp T 3 12 3 3 2 3 Control Data Transmission u u u uu u u 3 13 3 3 2 4 Squelch Control Lamp 41 7 u u u 3 13 3 3 2 5 F F Deviation Recognition Control Lamps 6 3 13 3 3 2 6 Control Lamp No Sync 5 U seen n u u u 3 13 3 3 2 7 IF Intermediate Frequency Jack 9 3 13 3 3 2 6 RE OFF BUON EENS EEN 3 13 3 3 2 9 Antenna Control Jack 3 14 3 3 2 10 Receiver Operat O u u E aa da ae a SEENEN 3 15 3 3 2 10 1 Remote Local Switch 13 U
7. u u u 4 24 4 5 Installation Dimensions U 4 25 a1 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 4 1 4 2 4 3 4 4 4 6 4 7a 4 7b 4 8 4 10 4 11 4 12 4 13 List of Figures Free space propagation of radio waves l enne ul 4 3 Field of lines of equal phase relations for two coherent waves 4 5 Reflected path distance and direct path distance of the radio 4 6 The phases between a direct wave W and reflected wave R 4 7 Signal strength lobes plotted against angle of elevation 4 8 Surveying the direction finder using criss cross and circular flights 4 10 RTA 1300 A Direction Finder Antenna 4 12 RTA 1300 A Direction Finder Antenna bottom view 4 13 Fitting O riNg 2 e cE 4 14 Allocation of connections 4 14 Assembly of radia
8. 5 3 5 1 4 Approval Plate EE 5 3 5 1 5 Declaration of Conformity U u u u u u u 5 4 5 1 6 Declaration of Interoparability 5 5 5 1 7 Approval Certificate BZT u u u u u u u 5 8 5 1 8 Approval Certificate BES I hua usss 5 10 5 2 Interwiring of the Direction Finder RT 1000C 5 13 5 3 Interwiring oft he Direction Finder RT 1000 C 2 Channel 5 14 5 4 Test Beet 5 15 5 1 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 1 Approval of Direction Finder System After successful installation of all components and north alignment of the direction finder antenna as described in section 4 4 the system is ready for operation But before bearings may be transmitted to aircraft approval from the appropriate authority must be obtained This approval is regulated differently in every country 5 1 1 Approval in the Federal Republic of Germany In the Federal Republic of Germany fixed flight navigational radio stations can be registered and oper ated by natural or juristic persons only with the approval of the air traffic control authority responsible for the particular area 81 LuftVZO To do this an application for agreement and approval for the setting up erection
9. eese u u u u 2 15 2 3 Display and Operating Functions J 2 16 2 3 1 Bearing Display and Bearing Quality Analysis 2 16 2 3 2 Test Te E 2 16 2 3 3 Repetition of Bearing Indication l u J u J T J 2 17 2 3 4 Frequency Selection u AI aG aree mor tee EENEG 2 17 2 3 4 1 Direct Frequency Selection U U u nannten nnn 2 17 2 3 4 2 Calling up Frequency Memory u u u u u 2 18 2 3 4 3 Programming the Frequency Memory 2 18 2 3 5 Direct Selection of Channel Number in Maritime Radio Communication 2 19 2 3 0 Scanning KEE 2 20 2 3 6 1 Selection of Scan 2 20 2 3 6 2 Ending Scanning E 2 20 2 3 7 Calling up the Distress Frequency 121 500 MHZ 2 21 2 1 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 8 Selection of the reference directions QDM QDR QUJ und 2 21 2 3 9 Checking the Variation adjustment l u u u u u 2 22 2 3 10 North Adjustment
10. Cht 1V T div Sms Ch2 5 V Trig 52div CHAN 2 The amplitude of the bearing signal fluctuates within the individual blocks refer to Fig 4 13 The fluctuation coincides with the rhythm of the audio signal Possible causes the carrier is modulated e g by speech has no influence on the bearing accuracy i P DF signal i HH BURN H frt i Channel 1 R L signal ae d V l Channel 2 E I Sms 5 V Chi 1 V T div Sms Ch2 5 V Trig 52div CHAN 2 The direction finding signal is very noisy Possible causes The field strength of the transmission signal is too low The transmitter is masked by hills buildings forests etc There is no theoretical line of sight to the transmitter The direction finding looses accuracy or is distorted by the masking 4 20 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Fig 4 14 DF signal 2 and R L signal 1 with noisy reception signal 7 DF signal EE EE
11. 3 15 3 3 2 10 2 Level Frequency Special Switch 17 3 15 3 3 2 10 3 Frequency Selection key T 14 15 l uu uuu u 3 15 3 3 2 10 4 Squelch adjustment potentiometer 18 3 15 3 4 Installation Dimensions 3 16 34 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 1 3 2 3 4 List of Figures Front view of receiver unit J J u u J nnn insani uJ 3 5 Front view additional bearing receiver option 3 6 Mains voltage selector 3 7 Antenna CONNECTION m 3 10 3 2 RHOTHETA Elektronik GmbH 3 1 oO ON O Q CQ N Zeck ch ek K Co eck Sech NO Go N O 1401 Antenna control R L off 1201 No Sync F F Sql 1204 IF Power 1205 Frequency Remote Local 4 Mode Level Frequency Special Sql X16 X5 X15 x4 Front View of Receiver Unit Power supply module Plug for connection of dummy antenna Test button R L off Antenna control module Control lam
12. 5 DATA 2B 8 a The matched signals DATA 1 and DATA 2 P PHI 1 and P PHI 2 and 48kHz 1 and 48kHz 2 are assigned to one pair of wires each in the communications cable If the communications cable used as the data cable is of the star quad type i e the four wires of two pairs are twisted together the signals DATA 1 2 and 48kHz 1 2 are to be assigned to one and the same star quad see section 5 2 3 2 7 Setting the Receiver The Bearing Receiver is integrated in the Receiver Module RTR 1204 1205 8 11 which also contains the receiver interface Both units are set correctly at the factory Nevertheless before using the direc tion finder for the first time all settings should be checked once again Setting of receiver Move Remote Local switch 13 to Remote position E EE RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 3 Using the RTR 1200 Receiver Unit Once all checks listed in section 3 2 have been carried out the receiver unit can be used 3 3 4 Switching on the Receiver Unit The receiver unit is switched on by plugging the mains cable into the mains Ensure that the socket for the mains connection is close to the receiver unit and can be reached at any time to enable the unit to be immediately disconnected from the mains if necessary The RTR 1200 Receiver Unit is designed for continuous operation To preclude incorrect operation the receiver unit is not provided with its own mains switch If a shut
13. 330 0 340 343 3 350 351 1 In the example larger deviations occur when measuring for the 20 110 and 210 desired values As can be seen by the evaluation of the direction finding signal and the green light dot circle they are due to masking of the transmitter and reflections The measurements are no longer taken into account in further assessment If interference of this kind occurs the site of the antenna is to be changed In the example the deviations are in the 2 to 3 range In practice the deviations can be greater due to measuring uncertainties or reflections at the antenna site The details of the system accuracy given in the section 1 technical data System Accuracy apply to reflection free reception conditions at the antenna site but in practice such conditions are never found Whether an antenna site is suitable must therefore be assessed in the light of the requirements of everyday operation 4 4 4 Determining the North Correction To determine the final north adjustment the average value of the deviation is determined from the test record To do this the sum of all the different values the signs must be taken into account are added and divided by the number of measurements Sum of all deviations average deviation Number of measurements Example 18 0 55 33 In the example the direction finder has a bearing which is on average 0 55 too great This can now be corrected with the a
14. 6 wire telephone cable bei max 10 km Controller RTC 1100 A co I ES DDD D E pan E3 LI Controller RTC 1100 A II DDD DDD D DDD H E E LI 1 6 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 1 2 Technical Data Frequency range air band LTS TED Mop nD REP PRON 118 to 136 975 MHz Frequency range marine band eeh 156 to 174 000 MHz Operating channels air band 760 10 preselected Channel 22 1 td cie db te Leti tet cae Hero te 25 kHz Type of modulation to be detected F3E A2X ELT modulation System accuracy cassia cut dts sr HU LE EE 2 1 RMS with antenna Sensitivity BO EU lt 2 uV m without antenna amplifier Polarisation nn dee celine dee ee deeds vertical PolarisatiOn error ciet ect rena recte ate cuite bere lt 1 with field vector rotation up to 45 Cone of silence n a approx 35 referred to the vertical Power supply oA 115 230 V 15 47 to 63 Hz Dm edd eden ende M Sk aie t nied eme 24 V 10 20 automatic switch over to DC voltage in case of AC mains failure Power consumption Controller Uribe cin ete aei max 15 VA Receiver DEEN max 10 VA 52 VA with heater Temperature ranges Operating temperature ANTONIN eee e etri idee 40 to 80 C Receiver unt 40 to 60 C Controlle
15. The transformer is not disconnected from mains supply 2 24 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 18 Line Mains Switch 15 Mains switch 17 Fig 2 2 provides a double pole disconnection of the power supply module from the mains The DC power supply is not affected which means that with the switch in the OFF position the power supply module is switched to the DC power supply Modes Mains switch DC power supply ON OFF switch Controller Standby setting setting Indicator 17 Fig 2 2 12 Fig 2 1 11 not connected OFF not connected OFF connected OFF connected operates in DC mode not connected OFF not connected operates in mains mode connected OFF connected operates in mains mode 2 3 19 Power Supply OK Indicator 19 After switch on the green indicator 19 Fig 2 2 lights up This indicates that the power module is op erating correctly 2 3 20 Data Port Data Interface 20 The data port is used to connect the RTR 1200 Receiver Unit to the controller Additionally the internal power supply voltages and the AF signal audio signal floating via a separate amplifier are applied to this connector Plug type D sub miniature female multipoint connector 25 way 2 25 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 o 13 96 0 96 96 14 6 Sao 1 D sub jack 25 way Plug
16. 2 test output on the rear of the controller The right left rotation signal at the R L test output is used to trigger the oscilloscope It is taken from the R L test output on the rear of the controller The connecting cables for the test outputs are contained in the RTM 1500 Service Kit or can be ordered from your dealer a Where there is correct reception without reflections the bearing signal appears as shown in Figure 4 12 Both blocks clockwise and counter clockwise rotation have the same amplitudes The envelope curve of the oscillation increases steadily in accordance with e function and has no dips The blocks also experience no amplitude fluctuations over a long time period 5 seconds If the bearing signal has the above shape it can be assumed that the bearing indicated by the controller is correct 4 19 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Fig 4 12 DF signal 2 and R L signal for undisturbed reception b Fig 4 13 DF signal 2 and R L signal with a modulated reception signal c mr ur DF signal i Channel 2 pms 5 V
17. 4 4 North Alignment Using a Ground Transmitter Presetting Presetting which requires further correction by the north adjustment on the controller in the 90 range resolution 0 5 as described in section 2 2 10 is achieved by the mechanical alignment of the direc tion finder antenna Nevertheless the setting of the antenna should be carried out as accurately as possible since this makes subsequent measurements easier Procedure a Mount the direction finder antenna on the antenna mast so that it is free to rotate Point the marked dipole to the north For the RTA 1306 Antenna Mast loosen the clamping screws pro vided for the purpose b Switch on the direction finding system Set the north adjustment to zero Carry out a phase adjustment refer to section 2 2 9 Set up a transmitter at an adequate distance at least 100 m From there use a compass to determine the direction to the direction finder antenna Caution When measuring using the compass ensure that during the measurement there are no objects transmitters cars in the vicinity of the compass which could affect the mag netic field p Activate the transmitter and transmit a continuous signal Caution When transmitting with a monopole antenna e g a hand held RT unit care must be taken due to undefinable radiation conditions to ensure that the antenna is as free as possible from disturbance i e vertically in stalled For hand he
18. Adjustment Using a Transmitter Position a test transmitter e g walkie talkie approx 100 m away exactly to the north of the direction finder antenna dipole north with label pointing towards the transmitter The bearing display should show QDM 180 and QDR 0 The north adjustment on the controller should be set to 0 see 2 2 10 Phase adjustment is set as described in 2 2 9 1 2 2 10 North Adjustment The bearing display QDM QDR is relative to magnetic north on condition that the antenna is me chanically adjusted towards north see section 3 Antenna Perform exact adjustment using the north adjustment on the controller The correction value for north adjustment appears on the frequency display 08 Fig 2 1 when buttons TEST 07 and REPEAT 14 are pressed simultaneously Example Display indicates correction value 3 5 N 03 5 2242 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Correction is possible in 0 5 steps in a 90 range Press the following buttons simultaneously to per form the adjustment TEST 07 REPEAT 14 NORTH ADJ 24 Fig 2 2 or TEST 07 REPEAT 14 NORTH ADJ 25 Fig 2 2 During this procedure bearings must be taken of a transmitter located in a known direction referred to the antenna position Correct the bearing display 02 Fig 2 1 to this direction QDM using the north adjustment 2 2 41 Variation Adjustment To show directions with magnetic reference
19. Authorised Representative Dipl Ing FH Wolfgang Pichl Managing Director RHOTHETA Elektronik GmbH Dipl Ing FH Oliver Lang Deyhle Managing Director RHOTHETA Elektronik GmbH 2 Erkl rung RHOTHETA Elektronik GmbH 82418 Murnau declare under our own responsibility that the interoperability constituent to which this declaration refers complies with the EU Directives and relevant Technical Specifications of Interoperability Murnau 2012 07 06 1 Authorised Representative 2 Authorised Representative ei D Td U 4 Ar fi ia W Al ia E47 y yl Wolfgang Pichl Oliver Lang Deyhle 5 5 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 ID H EC declaration of suitability for use 82418 Mumau Elektronik GmbH Germany RTR 1200 Tel 49 8841 4879 0 E Mail omail rhotheta de Fax 4983414879 15 Inlernet www tholhets de Rev 3 00 EC Declaration of Suitability for Use of Interoperability Constituent Name and Address of the Manufacturer Interoperability Constituent RHOTHETA Elektronik GmbH RTR 1200 Kemmelpark VHF Compact Direction Finder Dr Ingeborg Haeckel Str 2 RHOTHETA RT 1000 82418 Murnau Receiver referred to in EC No 552 2004 Annex Ill 1 1 Reference Number of the Regulation Essential Requirements of the Interoperability Regulation EC No 552 2004 1 2 Manufacturer RHOTHETA Elektronik GmbH Kemmelpark Dr Ingeborg Haeckel Str 2 82418 Murnau 1 3 Des
20. BNC X15 connector X16 Jack Receiver Unit RTR 1200A 4 terminal block 02 01 03 04 05 06 data cable X X X X X X VU 115 230V 16A U X m N 10 12 02 04 06 08 GND bolt 25 pol D Sub female connector Data Port Controller RTC 1100 A DF channel B 10 12 02 04 06 08 LITT 115 230V 16A 115 230V 16A I gt GND bolt x 25 pol D Sub female connector Data Port Controller RTC 1100 A DF channel A 5 14 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 4 Test Record 1 Objective of test To determine the direction finding accuracy and check the correct function of the complete system at different operating frequencies 2 Test layout Absorber Room PC 1 RF Measuring Antonna RT Mess Dipol SN COLIBRI DCU Direction Finder Test Stand RT 1000 Test Setup Test Stand equipment as listed e PC with RHOTHETA LabVIEW application software running Drehstand exe Rev gt 4 00 e USB Serial adapter MOXA UPort 1450 e Colibri Positioning Control e RF signal generator R amp S SML e Modulation source DAQ module NI USB 6211 e RF measuring antenna with 6dB attenuator e DUT complete DF System RT 1000 5 15 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 3 Preparation for test See work ins
21. SCAN 16 Fig 2 1 and then one of the four possible scan mode keys key 1 DOWN 3 UP 2 MO 9 0 ACT MO Scan modes DOWN The entire currently active frequency band aeronautical or maritime radio communica tion is scanned continuously in downward direction The frequency increment is 25 kHz Once the lowest frequency of the band has been reached scanning restarts at the highest one the frequency band is scanned in upward direction otherwise as in DOWN scanning 9 The ten frequency memories see section 2 3 4 3 are scanned continuously Two frequencies are scanned namely the active frequency and that in memory 0 Example Scanning frequency memories 0 to 9 STOP SCAN Remarks While scanning is in progress the display 08 Fig 2 1 briefly shows the message SCANNING every tow seconds While scanning is in progress the scan mode is only changed by pressing the relevant mode key If for example you wish to change from UP to DOWN scanning just press the DOWN key f you wish to continue scanning although a signal is being received press the relevant scan mode key and keep pressing until a new frequency is set Example In UP scanning a signal is being re ceived at 125 000 MHz and scanning stops If you still wish to continue UP scanning press key UP until 125 025 MHz appears and UP scanning continues automatically You may also store channel numbers for maritime radio communi
22. Transmission Device Controller Data terminal or data RTC transmission device 1100 RxD TxD OO 3 TxD RxD 0002 SG SG M Ns RTS i CTS 8 DSR 6 DTR 4 gt DCD The plug wiring of the data terminal device applies for most PCs with 9 way D subminiature multipoint connectors The terminal wiring is to be individually checked 2 33 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 25 Par Port Parallel Interface 29 The parallel interface 29 Fig 2 2 enables the transmission of bearing data to an external display or evaluation unit Data output is by means of nine data bits and a transfer signal A signal is also available which indi cates the availability of valid bearing data In this case the determined QDR bearing average is output in binary form with positive 5 V logic low 0 V high 5 V If no valid bearing is present bearing sig nal off D9 OUT is low the DO to D8 OUT outputs are high The status of the data lines DO to D8 OUT is valid only during the high phase of the transfer signal STR1 The repetition time is approximately 15 ms i e approximately 66 bearings are output per second 2 3 25 1 Par Port Terminal Wiring 29 15 way female multipoint connector 29 Fig 2 2 Type D subminiature 5 Volt supply Data bit 1 Data bit 3 Data bit 5 Data bit 7 Transfer signal No function Data bit 8 Data bit 0 Data b
23. a Theodolite Set up the theodolite in the immediate vicinity of the direction finder antenna aligned with magnetic north The calibration aircraft then flies a circular flight path around the direction finder antenna and transmits a continuous signal Track the aircraft using a theodolite If the aircraft flies through a 10 mark report this from the theodolite to the controller e g by radio Record the instantaneous bearing at the controller 4 4 2 2 Determining the Position Using a GPS Receiver Store the site coordinates of the direction finder antenna in the GPS receiver During the circular flight around the direction finder antenna record the QDM values deter mined by the GPS receiver and transmit them by radio to the direction finder where they are then compared with the bearing 4 4 2 3 Simplified Method If no theodolite or GPS receiver is available a simplified measuring procedure must be used at the actual antenna installation site to precisely north align the system and determine its accuracy Route points With this method the calibration aircraft overflies prominent landmarks route points the position of which has been previously determined from conformal maps scale approximately 1 200000 Note that the angular values determined using the map are relative to geographical north and must therefore be corrected with the magnetic declination As the aircraft overflies the route point this is
24. as well as directions with true north reference it is neces sary to set the local variation For this please act as follows 1 unscrew the front panel and remove it a little bit out of the rack 2 now you can see the rotary code switches and as well as the switch and The variation will be adjusted by the rotary switch 0 2 and Switch equivalent to hun dreds switch equivalent to tens and switch G equivalent to ones 3 The adjustment value has to find out as follows east Variation has to be direct adjusted prefix example Variation 3 E 000 003 003 adjustment switch value 0 switch value 0 switch value 3 Variation to the west has to be adjusted wit negative prefix example Variation 3 W 360 003 357 adjustment switch value 3 switch value 5 switch value 7 The Variation change all the time and has to be checked once a year 2 13 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 2 12 Disable Selection of Reference Direction There are applications where a change of reference direction from QDM to another direction is not allowed or makes no sense For this cases it is possible to disable the reference direction switch If it is disabled digital display 02 always shows the QDM value For this please act as follows 1 unscrew the front panel and remove it a little bit out of the rack 2 now you can see the switch and 3 turn the
25. down facility is required an external mains switch e g at the controller position is to be provided It must be noted that at low temperatures a warm up phase lasting up to 30 minutes may be possible after switching on the receiver unit 3 3 2 Switch on Reaction Operation Control Equipment The receiver unit is designed for remote operation The unit is operated by remote control using the RTC 1100 A Controller see section 2 All relevant control functions and indications are transmitted to the controller via the data cable and evaluated in the controller The indications and settings on the receiver unit are present only for test purposes if the unit has to be serviced and for carrying out func tion checks on the whole system 3 3 2 1 Receiver Self test After the receiver unit has been switched on an automatic test of the receiver display 12 Fig 3 1 is started This involves the numerical series 88888888 flashing for approximately 4 secs Following this the actual software version is shown for some seconds When the self test is finished the last frequen Cy set appears 3 3 2 2 Power Supply OK Control Lamp After switching on the green control lamp 37 and 10 Fig 3 1 of the Power Supply module RTX 1400 01 and on the receiver RTR 1204 8 lights up This shows that the power supply module is function ing correctly 9 12 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 3 2 3 Control Data Transmission
26. switch in to position OFF up away from the board the switch function is disabled 2 14 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 2 13 Ground Transmitter Suppression If you do not want to take the bearing of the ground transmitter connect the PTT jack 23 Fig 2 2 on the rear of the unit with a normally open contact of the transmit button See Figure 2 5 for wiring dia gram T x Transmit button 3 Controller Ground transmitter j RTC 1100 Fig 2 5 Wiring diagram for ground transmitter suppression If the normally open contact is not floating arrange the wiring according to Figure 2 6 PTT i Controller d Transmit button Ground transmitter RTC 1100 Fig 2 6 Wiring diagram for ground transmitter suppression with non floating contact Ground transmitter suppression is operative when contacts 1 and 3 of the PTT jack 23 Fig 2 2 are connected and thus contact 3 is connected to earth potential Fig 2 7 D sub jack 9 way 2 15 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 Display and Operating Functions 2 3 1 Bearing Display and Bearing Quality Analysis The bearing is displayed on a DF Direction averaged luminous 3 figure digital dis play 02 Fig 2 1 which may be dimmed for use in dark ened rooms 01 The resolu tion is 1 Additionally there is a display QDR in 10 steps using light dots arranged around a compass scale 03 The refere
27. transmitted by RT to the direction finder At the direction finder the instantaneous bearing is recorded and compared with the desired value from the map To achieve a constant bearing during the overflight the aircraft must fly radially relative to the direction finder antenna i e must fly either towards the direction finder antenna or away from it 4 18 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Due to the unavoidable errors when overflying the route points chosen should be at least 10 km from the direction finder antenna at a distance of 10 km a lateral offset of 175 m with regard to the direc tion finder when overflying the route point produces an error of 19 The PTT button should be pressed and held for at least 10 seconds before and after the overflight to enable the before and after history of the direction finding to be evaluated 4 4 3 Evaluation The actual values measured by the direction finder QDM bearings are entered in a record for com parison with the desired values theodolite bearings GPS bearings route points from the map 4 4 31 Evaluation of Direction Finding Signal To assess the fitness of the antenna site as accurately as possible and therefore assess the function ing of the direction finder system the direction finding signal DF signal relevant for determining the bearing should be observed on an oscilloscope during the measurements The signal can be taken from the DF signal
28. 01 1 1 3 Configuration A Standard The system operates in remote mode The direction finding antenna is installed remotely from the controller at a location favourable for direction finding Receiver demodulator and antenna control module are integrated in the receiver unit located at the antenna position They are connected to the controller by means of a 6 wire line Application Standard configuration The controller operator s position is independently from the DF antenna position This makes it possible to choose a physically optimal antenna posi tion to benefit of the full system performance DF Antenna Receiver Unit Controller RTA 1300 A RTR 1200 A RTC 1100 A Q 4 Antenna el Ke M controll A 1 A 6 wire telephon cable SS TU ooo i gt 000 95 RF Kabel EI mua 6 max 10 km SCH E3 1 O 7 d U 2 3 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 1 1 4 Configuration B operation with Slave display Like A however with additional slave display Application For applications described under A where the bearing information has to be available on a 2 operator s position DF Antenna Receiver Unit Controller RTA 1300 A RTR 1200 A RTC 1100 A
29. 19 WEST West dipole control current X21 415 V red 15 V supply voltage 4 14 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 10 11 12 13 14 Apply a thin coat of grease to the antenna head mast tube contact faces Screw antenna head onto mast tube Fit O ring to lightning conductor rod see Fig 4 8 Apply thin coat of grease to antenna head lightning con ductor rod contact faces Screw lightning conductor rod onto antenna head Fix radiators see Fig 4 10 N Push clamping nut clamping cone washer and rubber seal onto radiator Push radiator fully into recess for radiator Carefully tighten clamping nuts Erect mast tube if not already done I H Earth mast tube Rubber s aal Align antenna Point north dipole marked by red point on radiator housing northwards Clamping nut Radiator Fig 4 10 Assembly of radiators WARNING Observe all appropriate guidelines especially VDE regulations when conducting all building work installation of electrical equipment and lightning protection measures 4 15 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 4 4 North Alignment of the Direction Finder Antenna and Determining the System Accuracy at the Installation Site The north alignment is used to harmonize the angle determined by the direction finder with the actual magnetic north related azimuth values 4
30. 2 01 4 DIRECTION FINDER ANTENNA RTA 1300 A List of Contents 4 DIRECTION FINDER ANTENNA RTA 1300 A 4 1 4 1 Set Up Notes E 4 3 4 2 Notes on Fig 4 7 a b RTA 1300 A Direction Finder Antenna 4 11 4 3 Assembly Instructions sci mix coda er 4 14 4 4 North Alignment of the Direction Finder Antenna and Determining the System Accuracy at the Installation Site 4 16 4 4 1 North Alignment Using a Ground Transmitter Presetting 4 16 4 4 2 Flight Checking for Exact North Alignment and Determining the System Accuracy at the Installation Site 4 17 4 4 2 1 Determining the Position Using a Theodolite 4 18 4 4 2 2 Determining the Position Using a GPS Receiver 4 18 4 4 2 3 Simplified Method 4 18 4 4 3 Evaluation lenken 4 19 4 4 3 1 Evaluation of Direction Finding Signal eere 4 19 4 4 3 2 Evaluation of QDR Live Display Green Light Dot Circle 4 22 4 4 3 3 Evaluation of Measuring Results J 4 23 4 4 4 Determining the North Correction
31. 3 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 13 Dimmer 01 DIM The dimmer 01 Fig 2 1 is used to change the brightness of the QDM display 02 line of bearing display 03 line of live bearing display 04 error display 06 and frequency deviation display 05 The dimmer has no effect on the frequency display 08 When set to minimum the line of bearing display 04 is almost completely extinguished 2 3 14 Volume Control 09 The volume control 09 Fig 2 1 is used to change the volume of the AF signal speech signal which can be monitored in the speaker or headphones When set to minimum the AF signal is no longer au dible 2 3 15 Headphones Connection 10 Headphones can be connected to jack socket 10 Fig 2 1 for monitoring the AF speech signal The speaker in the controller is silenced when the jack plug is inserted Suitable jack plug 6 35 mm Terminal allocation Centre terminal audio signal Outer connection ground 2 3 16 STANDBY Indicator 11 With power applied power switch 12 Fig 2 1 set to ON and the controller is in STANDBY because voltage is present at the power transformer This state is indicated by the yellow STANDBY indicator 11 2 3 17 ON OFF Switch 12 This switch 12 Fig 2 1 is used to switch the controller on and off The switch activates or blocks the power supply regulator In the OFF position it also cuts off the DC power supply
32. A Arnulfstra e 43 8495 Roding Zulassungsart Allgemeinzulassung Objektart Ortsfeste VHF Funkpeilanlage Das Zulassungsobjekt erf llt die technischen Vorschriften der Richtlinie FTZ 17 TR 2013 Ausgabe Juni 1989 Die Zulassung kann widerrufen werden Diese Zulassung ist keine Genehmigung zur Errichtung und zum Betrieb der Funk anlage im Sinne des 8 2 des Fernmeldeanlagengesetzes FAG Saarbr cken den 31 03 92 Im Auftrag 1 Anlage 5 8 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 Translation FEDERAL OFFICE FOR LICENCES IN TELECOMMUNICATION LICENCE Licence No A102841C Add Identifier LO Name of Object RT 1000 A or C Licensee RHOTHETA Elektronik GmbH Unterfeldring 1 1 D 85256 Vierkirchen Pasenbach Licence Type General Licence Type of Object Stationary local VHF direction finder system The approved object fully meets the technical regulations of Guideline FTZ 17 TR 2013 Issue June 1989 The licence dated 31 03 92 is no longer valid Saarbr cken 21st of November 1994 Official stamp Signature 1 item enclosed 5 9 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 1 8 Approval Certificate BFS BUNDESANSTALT FUR FLUGSICHERUNG VHF Kleinbasis Doppler Peiler N Frequenzbereich EE e der Firma Rhotheta Schwarzfischer u Co OHG 8495 Roding bestehend aus Antennensystem RTA 1300 A Empfangseinheit RTR 1200 4 Control
33. B8414879 15 Internet www rhotheta de EC Declaration of Suitability for Use of Interoperability Constituent Name and Address of the Manufacturer Interoperability Constituent RHOTHETA Elektronik GmbH RTC 1100 Kemmelpark VHF Compact Direction Finder Dr Ingeborg Haeckel Str 2 RHOTHETA RT 1000 82418 Murnau Controller System Surveillance Systems and Procedures referred to in EC N 552 2004 Appendix Ill 1 1 Reference Number of the Regulation Essential Requirements of the Interoperability Regulation EC No 552 2004 1 2 Manufacturer RHOTHETA Elektronik GmbH Kemmelpark Dr Ingeborg Haeckel Str 2 82418 Murnau 1 3 Description of the Constituent Controller unit of the VHF Compact Direction Finder RHOTHETA RT 1000 1 4 The following procedures have been followed in order to declare suitability for use Conformity assessment procedures referred to in annex Il of the R amp TTE Directive 1999 5 EC 1 5 Relevant Provisions Relevant Provisions of the European Parliament and of the Council Radio Equipment and Telecommunications Terminal Equipment and the mutual recognition of their conformity the R amp TTE Directive 1999 5 EU Interoperability of the European Air Traffic Management Network the Interoperability Regulation EC No 552 2004 1 6 Notified Bod 1 7 Reference to the Community Specifications EN 60950 1 2006 A11 2009 A1 2010 EN 61000 6 1 2007 EN 61000 6 3 2007 A1 2011 1 8
34. H 3 2 2 Mains Fuses Before beginning to use the unit check that the correct fuses are fitted and are appropriate for the operating voltage range selected The fuses are underneath the switch box cover of the housing Remove the cover by loosening the three fixing screws User Manual RT 1000 Rev 2 01 E NNUS 115 range 290 V range AS heating and receiver unit F2 AC heating and receiver unit F3 Receiver unit F4 Receiver unit IEC 127T500H 250V 500 mA slow blow IEC 127T500H 250V 500 mA slow blow IEC 127T315H 250V 315 mA slow blow IEC 127T315H 250V 315 mA slow blow IEC 127T500H 250V 500 mA slow blow IEC 127T500H 250V 500 mA slow blow IEC 127T160H 250V 160 mA slow blow IEC 127T160H 250V 160 mA slow blow 3 2 3 DC Supply Connection The RTR 1200 Receiver Unit is fitted with a DC supply connection This allows the unit to be operated using batteries or a 24 V DC mains connection For DC supply replace dummy panel 28 Fig 3 1 by the included cable bushing Then insert the DC supply cable through the cable bushing and screw in To guarantee correct sealing of the cable bush ing uSe a 2 core round cable with an external diameter of 3 6 5 mm Select appropriate conductor cross section for 2 A continuous current Connect the cable to terminal strip 25 marked X3 Connect the positive voltage pole to X3 1 and the negative to X3 2 If mains voltage is present power s
35. If the receiver works in Remote mode standard the display 12 shows the frequency which is sett at the Controller side It indicate that the data connection between receiver Unit and controller is estab lished the data line works and is connected to the controller and the controller is switched on If the communication is disturbed the error message No Remote is displayed 3 3 24 Squelch Control Lamp Sql 7 The yellow squelch control lamp 07 Fig 3 1 lights up as soon as a signal of sufficient strength is received This shows that a bearing signal is being transmitted to the controller 3 3 2 5 F F Deviation Recognition Control Lamps 6 The red control lamps 07 Fig 3 1 light up if a signal with a frequency deviation larger than 5 kHz is received This shows that a signal is being received which is not suitable for direction finding purposes 3 3 2 6 Control Lamp No Sync 5 In case of an PLL lock error the red lamp No Sync 5 illuminate It indicate an failure on the receiver RTR 1204 3 3 2 7 IF Intermediate Frequency Jack 9 The intermediate frequency signal supplied by the receiver can be tapped at the IF SMB jack 09 Only for service use 3 3 28 R L OFF Button The R L OFF button 3 interrupts the right left antenna rotation control If this button is pressed and a received signal is present the value 000 or 180 north adjustment set on the controller appears on the QDM display of
36. OFF switch 12 Fig 2 1 are both switched off If the unit is to be operated off the mains connect the unit to the mains supply and move the mains ON OFF switch 15 Fig 2 2 at the rear of the unit to ON The unit is now in standby mode The yellow control lamp STANDBY 11 Fig 2 1 lights up The unit is ready to operate when the ON OFF switch 12 at the front of the unit is moved to ON If the unit is to be operated off a DC source connect the unit to the DC supply The unit is ready to operate when the ON OFF switch 12 is moved to ON In both cases the power supply control lamp 08 lights up to show that the unit is ready to operate The test function is now activated automatically All positions in the digital displays of the bearing 02 and frequency 08 show the figure 8 The individual lamps of bearing direction displays 03 and 04 light up one after the other The frequency deviation 05 and error indication 06 lamps light up The reference display shows VAR Variation while the test function is running After the test function is completed the bearing frequency selected before the unit was last switched off appears on the frequency display 08 2 2 9 Phase Adjustment A special feature of the RT 1000 Direction Finder is its phase compensation by left right rotation of the antenna This allows complete compensation of direction finding errors caused by signal phase variations in the reception channel Ho
37. RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 User Manual VHF Direction Finder System RHOTHETA RT 1000 RHOTHETA Elektronik GmbH Edited by RHOTHETA Elektronik GmbH Kemmelpark Dr Ingeborg Haeckel Str 2 82418 Murnau Deutschland Tel 49 8841 4879 0 Fax 49 8841 4879 15 Internet www rhotheta de E Mail email rhotheta de Copyright RHOTHETA Elektronik GmbH All rights reserved Issue 2012 07 10 Rev 2 01 Document ID 12 9 1 0004 3 1 2 Note User Manual RT 1000 Rev 2 01 The manufacturer reserve the right to make modifications at any time and without previous information of the here described product RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Section 1 General Information General Description Characteristics Flexible System Configuration Bearing Display and Bearing Quality Analysis Antenna System Antenna Mast Technical Data Section 2 Controller RTC 1100 A Section 3 Receiver Unit RTR 1200 A Section 4 Direction Finder Antenna RTA 1300 A Section 5 Appendix Approval of Direction Finder System Interwiring of the Direction Finder Test Record RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 1 GENERAL INFORMATION List of Contents 1 GENERAL INFORMATION 1 1 1 1 General Description EEN 1 2 1 1 1 Antenna Mast Option 2 2 zc U u ea an 1 2 1 1 2 Flexib
38. RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 5 Direct Selection of Channel Number in Maritime Radio Communication Channel number ranges duplex operation 01 07 181028 60 to 66 and 78 to 88 simplex operation 08 to 17 and 67 to 77 For direct channel number selection for maritime radio communication only use the buttom C Chan nel and keyes 0 to 9 of the keypad 13 Fig 2 1 The last digit of the channel display 08 shows the selected mode in the upper and lower sidebands e S Sea bearing of sea station lower sideband C Coast bearing of a coast station upper sideband e X channel number in simplex operation upper sideband nlower sideband Selection of the upper or lower sideband coast or sea station is made by repeatedly pressing button C when entering the channel number Example Enter channel number 78 bearing mode reception of a sea station Input Channel display 08 CH __ S CH 7_ S CH 78 S If the channel number is not entered correctly within 10 secs the controller switches back to the last frequency or channel set 2 19 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 6 Scanning In scan mode the frequency is changed continually While a signal is being received the current fre quency stays turned When reception stops scanning resumes after approx 2 5 seconds 2 3 6 1 Selection of Scan Mode In order to start scanning first press button STOP
39. User Manual RT 1000 Rev 2 01 4 4 3 8 Evaluation of Measuring Results The deviations between the desired and actual values are entered in the test record compiled with the aid of the flight check If in the case of a calibration aircraft the direction finding signal or the green light dot indication is evaluated the observations made at the corresponding measured values are to be annotated Bearing errors can be easily interpreted in this way A test record of the following kind is obtained Example Test record DESIRED 000 010 020 030 040 050 060 070 080 090 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 ACT 000 011 025 032 041 049 060 072 083 091 099 104 120 131 142 150 158 170 181 189 200 217 222 231 240 251 259 270 280 290 302 311 Deviation 0 1 5 2 1 1 0 2 3 1 1 6 0 1 2 0 0 1 1 0 7 42 41 0 1 1 0 0 0 2 1 Remarks Direction finding signal is noisy indication fluctuates Direction finding signal has amplitude fluctuations display fluctuates by 5 Direction finding signal pumps green light dot circle 20 4 23 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 320 319 1 330
40. and operation of a fixed flight navigational radio station is to be made to the appropriate air transport authority of the German Land This application is to be obtained from the relevant Telecommunication Office Superior Post Director or from the Federal Department for Post and Telecommunication After successful testing and acceptance by the Federal Institute for Flight Safety BFS from 1993 German Flight Safety DFS the Aviation Department issues the agreement The approval is issued by the Federal Department for Post and Telecommunication Eschborn Branch Office through the local Telecommunication Office A certificate is made out for this purpose The details given refer to 1992 The right to make changes or deviations is reserved CAUTION The direction finding system may only be brought into service after receipt of the certificate 5 1 2 BFS Series Approval The RT 1000 A C Direction Finding System has the series approval of the Federal Institute for Flight Safety BFS Series test number B 458 92 for a copy of the approval certificate refer to section 5 1 6 5 2 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 1 3 BZT Series Approval The direction finder system is approved by the Federal Department for Approval in Telecommunica tion BZT Approval No A102841C Additional marking LO Refer to section 5 1 5 for a copy of the approval certificate CAUTION The series approval for th
41. ave display Set of cables Antenna amplifier 1 10 User Manual RT 1000 Rev 2 01 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 CONTROLLER RTC 1100 A List of Contents 2 CONTROLLER RTC 1100 A 2 1 2 1 Key to Front and Rear Views 2 4 2 2 Preparation for Use uuu aaa aaa 2 8 2 2 1 Earhinqa EE 2 8 2 2 2 Mains Vollaga EE 2 8 2 2 3 Mains TE 2 9 2 2 4 DC Voltage Connection u I Aa Aaen tr uae ru 2 9 2 2 5 e E 2 10 2 2 6 Connection of the Receiver Unit u u u u u 2 10 2 2 7 Rack per a island 2 11 2 2 8 Switching on Reaction from Unit 2 11 2 2 9 Phase Adjustment J nennen nennen u u l J Q J J J J 2 11 2 2 9 1 Adjustment Using RTM 1500 Dummy Antenna Option 2 12 2 2 9 2 Adjustment Using a Transmiltter 2 12 2 2 10 North Adjustment IILI 222 1220 ss 2 12 2 2 11 Variation Adjustment 2 13 2 2 12 Disable Selection of Reference Direction l u u 2 14 2 2 13 Ground Transmitter Suppression
42. cation in frequency memories 0 to 9 for scanning 2 3 6 2 Ending Scanning To stop all active scanning processes immediately press the STOP SCAN button 16 or any other function key 2 20 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 7 Calling up the Distress Frequency 121 500 MHz By pressing button 121 500 MHz 15 Fig 2 1 this frequencies immediately activated international distress frequency in civil aviation 2 3 8 Selection of the reference directions QDR QUJ und QTE With the reference direction switch 18 the reference directions QDM QDR QUJ and QTE can be displayed on the digital bearing display The selected reference direction is shown at the reference display 17 and at the legend of the switch position 18 Switch position Reference Direc Reference direc tion Magnetic bearing course of Magnetic north QDM QDR 180 aircraft vessel to the DF QDM QUJ VAR station DF to the aircraft vessel QTE VAR the aircraft vessel QDR VAR True bearing track of air True north QUJ QTE 180 QDM craft vessel to the DF sta QUJ VAR L Wobei westliche Variatonswerte mit dem Vorzeichen und stliche mit dem Vorzeichen bewertet werden 2 21 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 The interrelation will be shown in the following Figure Magnetic North Caution Just forward to an aircraft pilot only QDM beari
43. cription of the Constituent Receiver unit of the VHF Compact Direction Finder RHOTHETA RT 1000 for the frequency range 118 136 975 MHz and 156 174 MHZ 1 4 The following procedures have been followed in order to declare suitability for use Conformity assessment procedures referred to in annex Il of the R amp TTE Directive 1999 5 EC 1 5 Relevant Provisions Relevant Provisions of the European Parliament and of the Council Radio Equipment and Telecommunications Terminal Equipment and the mutual recognition of their conformity the R amp TTE Directive 1999 5 EU Interoperability of the European Air Traffic Management Network the Interoperability Regulation EC 1 6 Notified Bod 1 7 Reference to the Community Specifications EN 60950 1 2006 A11 2009 A1 2010 EN 61000 6 1 2007 EN 60950 22 2006 A11 2008 EN 61000 6 3 2007 A1 2011 1 8 Authorised Representative Dipl Ing FH Wolfgang Pichl Managing Director RHOTHETA Elektronik GmbH Dipl Ing FH Oliver Lang Deyhle Managing Director RHOTHETA Elektronik GmbH 2 Erklarung RHOTHETA Elektronik GmbH 82418 Murnau declare under our own responsibility that the interoperability constituent to which this declaration refers complies with the EU Directives and relevant Technical Specifications of Interoperability Murnau 2012 07 06 1 Authorised Representative 2 Authorised Representative LA Q f LA Ne be Ya Wolfgang Pi Oliver Lang De
44. d 04 are switched on in 10 steps and the frequency display 08 shows 8888888 The lamps for frequency deviation 05 and error 06 are illu minated Additionally the evaluation of the bearing is inhibited when the test function is activated When releas ing the test key 07 the bearing evaluation is started again 2 16 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 8 Repetition of Bearing Indication The repeat function called up using the REPEAT button 14 Fig 2 1 is used to display the last bear ing calculated In addition when the REPEAT button is pressed the current bearing is retained In this function the live bearing direction indication 04 is not active 2 3 4 Frequency Selection Range 118 000 to 136 975 MHz and or 156 000 to 174 000 MHz Resolution 25 kHz Frequencies may be entered directly using the key pad or may be called up from the frequency memory The unit makes available 10 frequency memories which are retained when the unit is switched off The display 08 Fig 2 1 indicates the active frequency 2 3 4 1 Direct Frequency Selection Frequencies can be entered directly using buttons F frequency and 0 to 9 on the keypad for entering frequencies 13 Fig 2 1 Example Entering a frequency of 118 975 MHz Input Frequency display 08 cse pee E Exe pn It is not necessary to input the last figure kHz figure because the controller generates this aut
45. ded to allow the best positioning of the direction finder antenna Reflection Of course airports are not without their reflectors but these do not normally cause noticeable prob lems All direction finders with field probes calculate the angle of signal incidence by finding out the path direction vector at which the larg SOB BO DO est phase modification per unit of B zc c Oe a Se distance is present Distorted field of lines of equal phase relations for two coherent waves Fig 4 2 Field of lines of equal phase relations for two coher ent waves In Figure 4 1 this vector is vertical to the lines of equal phase relations Figure 4 2 shows the distorted field of lines of equal phase relations for two coherent waves reflection from different directions with different field strengths The advantage of wide base direction finders is most noticeable in static conditions Static conditions indicate that the position of the transmitter and direction finder as well as the transmitter frequency does not change with time Should one of the three named items change e g transmitter in aeroplane the direction finder antenna and the field of lines of equal phase relations begin to move in relation to one another This movement accelerates in proportion to the relationship between the reflected path distance and the direct path distance of the radio wave Figure 4 3 As shown in Figure 4 2 this movement in the case of w
46. e direction finder as a portable unit it must be earthed using an appropriate earthing rod surface earth or earthing plate If possible connect the unit to the metal operating environment vehicle or shelter WARNING Observe all local safety regulations 2 2 2 Mains Voltage The RTC 1100 Controller can be operated using mains voltage of 115 V or 230 V 15 The unit is factory set to 230 V mains voltage Before using the unit check that the correct operating voltage range is set Use a screw driver to move the mains voltage selector 32 Fig 2 2 on the front panel of the RTX 1401 Power Pack module 230 Selector position for 230 Volt range o Uy Permissible operating voltages Vmin 195 5 Vims Vmax 264 5 Vims Selector position for 115 Volt range i Permissible operating voltages Vmin 97 75 Vims Vmax 132 25 Vms Fig 2 3 Mains voltage selector After setting the mains voltage make sure that the appropriate mains fuses F2 and F3 are in the mains fuse holder 35 2 8 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 CAUTION If the mains voltage selector is not set correctly the unit may be damaged beyond repair 2 2 3 Mains Fuse The mains fuses are contained in the mains power connection 36 Fig 2 2 There is a separate fuse for phase and the neutral wire The fuse holder 35 can be easily unlatched by inserting a screwdriver into the slot in the upper part of the fuse holde
47. e QDR live display green light dot circle serves as a further criterium of the quality of the direction finding including during every day operation During a circular flight the green light dot circle should wander steadily around the compass card corresponding to the direction of movement of the aircraft The green light dot circle display because it is not averaged precedes that of the red The display jumps backwards and forwards between a max imum of two light dots Malfunctions which can be detected by the green light dot circle a Rapid jumping backwards and forwards spreading out of the light dots around the aver aged value Possible causes Received power too low due to the long distance from the transmitter The transmitter is masked b During circular flight the light dots do not wander steadily around the compass card cor responding to the movement of the aircraft Possible causes Influence of reflections Aircraft performs extreme flight manoeuvres Jamming transmitter on same channel Light dots jump Spontaneously backwards and forwards in large areas of the compass card Possible cause Reflections d Light dots jump backwards and forwards around the averaged value red light dot spreading out Possible cause Reception signal is modulated The spreading out area depends on the type and strength of the modulation 4 22 RHOTHETA Elektronik GmbH
48. e direction finding system by the BFS and by the BZT does not permit the setting up or operation of the system but is instead a precondition for application for such approval 5 1 4 Approval Plate The components of the RT 1000 A C Direction Finder System are provided with plates which carry the approval number of the Federal Department for Approval in Telecommunication and the series test number of the Federal Institute for Flight Safety These information plates must not be removed or covered They are fitted at the following positions of the system Controller on the back side Receiver unit on the bottom left of the clear view cover Direction finding antenna on the antenna housing close to the radiator housing of the north radiator Approval plate A102 B4IC LO BFS Nr B 458 92 5 3 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 1 5 CE Declaration of Conformity AHOTHETA Suter Gris Declaration of Conformity RHO eae Konformitatserklarung Gok DN EINES I DA Te 498841 4879 0 E Mail emaigirhoreta do RT 1000 Fan 90 8841 4870 15 internet wwe tome de Rev 2 00 CC Declaration of Conformity Konformitatserklarung Type of Product RT 1000 also known as Geratetyp auch bekannt als Product Designation Compact Direction Finder Bestimmungsgem e Verwendung Kleinbasis Doppler Peiler We RHOTHETA Elektronik GmbH Dr Ingeborg Haecke
49. e j lt lt RF Cable Fig 3 3 Antenna connection X15 24 Control signal Control cable X16 22 RF signal RF cable 3 9 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 X15 antenna control plug 21 pin allocation X15 plug No 21 Fig 3 4 Plug for control cable 3 2 6 Controller Receiver Unit Data Connection The RTR 1200 Receiver Unit is connected to the controller via a communications cable with three pairs of wires This cable is used to transmit the bearing signal a reference signal the AF speech signal and data signals for receiver control and errors signalling Cable type e g A 2Y L 2Y x2 x0 6 St Ill Bd At the receiver unit end the data cable 24 Fig 3 1 is inserted through the housing bushing 23 and screwed in The individual pairs of wires are connected to terminal strip X4 22 Fit a 25 pole D Sub plug to the controller end of the cable Then plug the cable into the data port on the line interface module RTC 1103 Connection plan for data cable Terminal block X4 25 Signal D Sub plug Receiver unit controller Terminal Name Terminal No 12 3 10 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Connection plan fort data cable additional bearing channel option terminal block X4 25 Signal D Sub Stecker Receiver Unit 2 GC 48 48 1 askuz2 10 B 10 48 kHz 2B 12 P PHI 1B PHI 2 P PHI 2B 4 DATA 1B
50. er to operate the unit off the mains plug the mains cable into the mains power connection 36 Fig 2 2 to connect the unit to the mains supply In order to operate the unit using DC connect the unit to the DC supply via pole terminals 33 and 34 WARNING Only connect the unit to the mains using an earthing contact socket outlet If the unit is connected to both power supply types and the mains ON OFF switch 15 is switched on the unit is normally operated off the mains If mains supply is interrupted the unit switches over to DC supply internally This allows an automatic change over to a DC emergency power source If mains supply is switched off at the mains ON OFF switch 15 the DC supply only is effective 2 2 6 Connection of the Receiver Unit The RTC 1100 Controller is connected to the RTR 1200 Receiver Unit by means of a six wire commu nications cable On the RTC 1100 Controller use the 25 pole D SUB jack Data Port 18 Fig 2 2 See section 3 2 6 and section 5 2 for plug allocations 2 10 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 27 Rack Mounting Use the adapters supplied to mount the RTC 1100 Controller in 19 racks When mounting in a rack ensure that permissible ambient temperatures are not exceeded This is especially important when mounting with other units which give off heat 2 2 8 Switching on Reaction from Unit Ensure that the mains ON OFF switch 15 Fig 2 2 and the ON
51. hs become shorter diffractions at edges however are reduced and so the effect of shadowing obstacles is more important Accordingly the propagation characteristics of radio waves from approximately X 10 m increasingly resemble those of light Coming back to VHF radio and UHF television reception using portable units with antenna it is almost impossible in urban areas to find the actual direction of the transmitter by adjusting the antenna At a wavelength of 1 m to 3 m wave propagation requires a direct path and if this is not available only reflected waves are received In urban areas these may come from several directions simultaneously But that is not all the mostly horizontal or vertical plane polarized waves propagated by the transmitter are also rotated to a certain degree due to diffuse reflectors and diffracting edges When the wave arrives at the receiver it may be oblique elliptically or even circular polarized This fact becomes ap parent by the often curious antenna positions which are necessary to obtain the best reception of radio or television waves These points are meant to indicate that in the VHF UHF range direction finding of a stationary trans mitter using a stationary direction finder in a built up area or even inside a building is practically impos sible 4 4 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Conditions at airports are much more favourable These instruc tions are inten
52. id of the north adjustment in steps of 0 5 refer to section 2 2 10 The correction value to be set is obtained as follows Correction value average deviation x 1 Example 0 55 0 55 x 1 The value 0 5 is used as the correction value The direction finder system is now ready for operation but before the bearings can be transmitted to the aircraft approval by the relevant authorities in the respective country is necessary refer also to section 5 1 4 24 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 4 5 Installation Dimensions RTA 1300 Direction Finding Antenna Mast pole with mast pole and lightning conductor rod 2 410 S L LO eon HL Tv 2 ce rt To Poren L A D D N O o Y Y 840 lt Y 4 25 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 APPENDIX List of Contents e TI 5 1 5 1 Approval of Direction Finder J 5 2 5 1 1 Approval in the Federal Republic of Germany u u u 5 2 5 1 2 BFSSeries Approval cierre tre nn an an en ran SE 5 2 5 1 3 BZTSeries Approval tree
53. ide base direction finders causes slight azimuth oscillation In contrast this oscillation is larger in the case of narrow base direction finders the series of small circles in Figure 4 2 When several values are averaged out however both systems give the same azimuth 4 5 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 a b T Aeroplane Lor T Reflector w2 Wi W1 W2 Direction finder 5 et Direction finder Refactor favourable unfavourable W1 W2 R1 R2 W1 W2 R1 R2 With moving transmitter Rapid phase shifting between W and Only very slow phase shifting between W and R signal therefore good bearing R signal so no averaging possible The average possibledisplayed bearing oscillates slowly around the rated value Fig 4 3 Reflected path distance and direct path distance of the radio wave The following conclusions can be drawn Vertical reflector surfaces e g buildings hangars metal fences metal masts overhead lines as well as bushes and trees should not be within 100 m of the direction finder antenna if possible 4 6 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 unfavourable A moving transmitter causes rapid phase shifts between W and R signals and therefore a lot of amplitude fluctuations at the direction finder PLATA LIAL AT PEER P PAESE Ground favourable A moving transmitter ca
54. ion Ref QDR Live bearing direction Ref QDR Frequency deviation Error indication Test function Display of frequency north adjustment and error code Volume control Headphones connection Control lamp for STANDBY mode ON OFF switch Keypad for entering frequency Repetition of bearing indication Call up of distress frequency 121 500 MHz Termination or selection of scan mode Reference direction Indicator selection switch for reference direction Mains switch 24 V DC fuse Power supply control lamp Data interface Control indication synchronisation NOK 24 2 3 13 2 3 1 2 3 1 2 3 1 2 3 11 2 3 12 2 3 2 2 3 4 5 7 2 3 14 2 3 15 2 2 8 2 3 16 2 3 17 2 3 4 2 3 3 2 3 7 2 3 6 RHOTHETA Elektronik GmbH Sync R L DF Signal 2 PTT North Adj North Adj Ser Port Par Port fine coarse Phase Adi Power Select 24V DC 24V DC F2 F3 User Manual RT 1000 Rev 2 01 Control indication synchronisation Test plug R L signal DF signal filtered Connection jack for ground transmitter suppression Positive variation of north adjustment value Negative variation of north adjustment value Serial port Parallel port Rotary switch 1 for fine phase adjustment Rotary switch 2 for coarse phase adjustment Control lamp for phase adjustment Earth connection M6 Mains voltage selector 115 230 V 24 V battery connection 0 V battery connection Mai
55. it 2 Data bit 4 Data bit 6 No function Bearing signal ON OFF Low OFF High ON Ground 2 34 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 25 2 Time Sequence A not 2 ar C Hot valid 77 marvel eg D8 OUT I I I 1 I I 1 1 I I e 1 T2 lt STR1 2 35 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 4 Installation Dimensions 2 36 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Mounting Cutout 465 1 2 37 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 RECEIVER UNIT RTR 1200 A List of Contents 3 RECEIVER UNIT RTR 1200 A 3 1 3 1 Front View of Receiver Unit U 3 3 3 2 Preparation for Use uarie andit cid nada LR its 3 7 3 2 1 Setting the Mains Voltage l u u u u uu u u 3 7 3 2 2 Mains o TE 3 8 3 2 3 DC Supply Connection U u u u u u u 3 8 324 IDG TEE 3 9 3 2 5 Connection of RTA 1300 Direction Finder Antenna 3 9 3 2 6 Controller Receiver Unit Data Connection
56. l Str 2 82418 Murnau Germany declare under our sole responsibility that the product and product family identified above is in conformity with the essential requirements and other relevant requirements of the R amp TTE Directive 1999 5 EC Wir die RHOTHETA Elektronik GmbH Dr Ingeborg Haeckel Str 2 82418 Murnau Deutschland erkl ren hiermit in alleiniger Verantwortung dass das oben genannte Produkt und die Produktfamilie den grundlegenden Anforderungen und den brigen relevanten Anforderungen der R amp TTE Richtlinie 1999 5 EG entspricht The following harmonised standards are applied Die nachfolgenden harmonisierten Normen wurden angewandt HEALTH amp SAFTY Art 3 1 a EN 60950 1 2006 A11 2009 A1 2010 Gesundheit und Sicherheit Art 3 1X2 EN 60950 22 2006 A1 1 2008 EMC Art 3 1 b EN 61000 6 1 2007 Elektromagnetische Vertr glichkeit Art 3100 EN 61000 6 3 2007 A1 2011 OTHER incl Art 3 3 and Interoperability Regulation EC N 552 2004 complementary provisions Andere inkl Art 3 3 und erg nzende Bestimmungen Mumau 2012 01 11 Murnau den 11 01 2012 Managing Director Gesch ftsf hrer 5 4 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 1 6 Declaration of Interoparability RHOTHETA Elektronik GmbH ID H Dr lngeborg Haeckel Sir 2 EC declaration of suitability for use 82418 Murnau Elektronik GmbH IH ER eg WR Gu a RTC 1100 Rev 3 00 Fax 49
57. ld radio units it is advisable to hold the unit above your head In this case the antenna points vertically upwards refer to Fig 4 11 Fig 4 11 Setting up the ground transmitter 4 16 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 e Rotate the direction finder antenna in the mast mounting until the controller which is set to the transmitter frequency indicates the QDM value determined by the compass set the north ad justment to zero In this case correcting the antenna setting by rotating clockwise viewed from above the single dipole moves in the north east south west direction reduces the indicated QDM value a counter clockwise rotation causes an increase Caution The direction finder antenna should be rotated slowly with pauses because a con siderable lag error occurs in the determination in the direction finding unit For the final adjust ment the person rotating the antenna must move away from the antenna after each correction so as not to disturb the near field of the antenna and therefore influence the direction finding Caution When carrying out the above measurements there must be no objects vehicles parking aircraft buildings etc in the vicinity of the transmitter or the direction finder which could disturb the wave propagation 4 4 2 Flight Checking for Exact North Alignment and Determining the System Accuracy at the Installation Site For exact north alignment under operating condition
58. le System Configuration 1 2 1 1 3 Configuration A 1 3 1 1 4 Configuration B operation with Slave display 1 4 1 1 5 Configuration zeessen 1 5 jn MEE ipei 1 6 1 1 7 Configuration E simultaneous 2 channel operation 1 6 1 2 Technical Dad 1 7 1 3 Supplied Accessories 1 10 UE OP E 1 10 gt 11 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 1 1 General Description The direction finder system RT 1000 is designed for ATC air traffic control and VTS vessel traffic service application The system can be used in stationary and mobile applications 1 1 1 Antenna Mast Option The special Mast RTA 1306 is recommended for the antenna system The mast has a fixture which makes it possible to tilt the antenna down to working level to facilitate assembly and maintenance of the antenna The integrated rotating stand makes it possible to rotate the antenna in 10 steps to effec tively check the direction finding system In addition there is a weatherproof housing for the receiver unit 1 1 2 Flexible System Configuration All Known radio direction finding methods are based on
59. ler RTC 1200 A B f r die Betriebsart A2X ELT Modulation Peilfehler 2 ist auf Einhaltung der in den Technischen Vorschriften der Bundesanstalt f r Flugsicherung 201 Pflichtenheft f r autom gt Funkpei lanl auszugsw Technische Vorschriften f Peilanlagen f r den Fl grf Hk E Wb ROS niedergelegten Forderungen gepriift worden Das Ger t entspricht den Vorschriften die von der Bundesanstalt f r Flugsicherung BFS im Ein vernehmen mit dem Fernmeldetechnischen Zentralamt FTZ der Deutschen Bundespost auf Grund der Vollzugsordnung f r den Funkdienst VO Funk des Internationalen Fernmeldevertrages aufgestellt wurden sowie den Forderungen der Herren Bundesminister fiir Verkehr BMY und fiir das Post und Fernmeldewesen BPM und den Richtlinien und Empfehlungen der Internationalen Zivilluftfahrt Organisation ICAO f r den Flugfernmeldeverkehr Es wird daher mit den umseitig aufgef hrten Auflagen als Muster zur Herstellung und zum Vertrieb in der Bundesrepublik Deutschland zugelassen B 458 92 Das Ger t hat die Serienpr fnummer s oes erhalten Frankfurt Main den 1 1 03 92 5 10 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 Translation FEDERAL INSTITUTE FOR FLIGHT SAFETY The VHF Small range Doppler Direction Finder Type RT 1000 VAR A C Frequency range 118 000 to 136 975 MHz manufactured by Rhotheta Schwarzfischer amp Co OHG 8495 R
60. level on the data lines corresponds to the RS 232 standard i e a high is defined as a volt age between 3 V and 15 V and a low as a voltage between 3 V and 15 V The data is transmitted in negative logic The bearings are output as QDR values and therefore differ by 180 from the values shown in the QDM display 02 2 28 RHOTHETA Elektronik GmbH 2 3 241 Data Output User Manual RT 1000 Rev 2 01 The data output is continuous i e no control by means of a handshake signal or control characters is necessary Average bearing QDR value Live bearing QDR value Receive level The following example shows the output of the average QDR bearing 315 as a sequence of ASCII characters A315CR Average bearing 315 QDR 0 to 359 QDR Units Tens Hundreds 0 to 359 QDR Units Tens Hundreds Error code units Error code tens 0 Bearing signal off 1 Bearing signal on 2 Deviation 3 Test 4 Ground transmitter suppression XX 0 to 99 Units Tens 118 000 to 136 975 MHz kHz units kHz tens kHz hundreds MHz units MHz tens MHz hundreds L Final character decimal 13 Content bearing decimal 51 49 53 Header decimal 65 2 29 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Time sequence The status of the bearing signal determines the bearing data output If no usable bearing signal is pre sent the RTC 1100 Controller transmits the data for
61. lue refer to section 4 4 3 1 Plug type SMB 2 3 23 R L Test Connector 23 The signal for changing over the fictitious antenna rotation from clockwise to counter clockwise is ap plied to the test plug 23 Fig 2 2 This signal is used for triggering the oscilloscope when monitoring the DF signal described in 2 3 17 Plug type SMB 2 3 24 Ser Port Serial Interface 28 The serial interface 28 Fig 2 2 enables the transmission of bearing data to an external display unit and also permits remote control from an external control unit The characters to be transferred are transmitted in ASCII code from the RTC 1100 Controller The data bit sequence which is assigned in each case to the characters to be transmitted is preceded by a start bit and followed by a stop bit Both additional bits ensure that both transmitter and receiver are time synchronized The data traffic via the serial interface is in asynchronous mode For time synchronisation of the data transmitter and receiver the data receiver is triggered by the rising edge of the start bit at the beginning of the bit sequence of a character 2 27 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 The transmission of a message begins with the header consisting of an alphanumeric character The actual message content forms a string of ASCII decimal numbers The transmission of a message is ended by the final identifier CR decimal code 13 The signal
62. m x L 2 a N N o K m N 4 lt 0 s gt als N P SS P E 2 Fig 4 6 Surveying the direction finder using criss cross and circular flights In conclusion if the direction finder antenna is positioned in an open area a few metres above the ground and several 100 m away from reflecting obstacles results will be satisfactory If the antenna is set up on buildings more than 10 m above the ground problems are likely and before such a position is definitively selected it is most important to test the position by means of criss cross over flights 4 10 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 4 2 Notes on Fig 4 7 a b RTA 1300 A Direction Finder Antenna _ Designation Function LT Lightning conductor rod Radiator cover Radiator Clamping nut Radiator flange Antenna head North dipole label Mast tube 2 3 4 5 6 7 8 9 Flat plug for control cable connection CH Flat plug for control cable connection Flat plug for control cable connection N Flat plug for control cable connection Co Flat plug for control cable connection Radiator housing Wu BNC jack for antenna cable Cord grip k N Flat plug for control cable connection Radiator housing cover 4 11 User Manual RT 1000 Rev 2 01 RHOTHETA Elektronik GmbH
63. nce direction display 17 indicates the selected reference direction QDM QDR QTE or QUJ DF direction not averaged Reference direction Digital DF Display Fig 2 8 Bearing Display To obtain an optimally settled display the bearing signal is averaged and then processed using a spe cial algorithm In order to infer the quality of the displayed bearing there is a second concentric circle of light dots 04 in the display area which displays the actual i e not averaged live bearing direc tion in a 20 ms rhythm This dual compass scale allows optimum bearing quality analysis because the non average bearing is displayed in direct relation to the mean bearing If the live bearing display 04 circle of green lamps shows considerable variations or differences to the averaged mean bearing display 03 circle of red lamps the operator can see that the direction finder is being affected by noise shadowing reflections or strong modulation 2 3 2 Test Function After switching on the controller the unit automatically performs a test routine If the system is used continually over longer periods we recommend activating the test function every day The test function is activated using the test button 07 Fig 2 1 The test routine runs through the in ternal self test functions and controls the displays for bearings 02 03 04 and frequency 08 numer ical display 02 shows 888 the orientation displays 03 an
64. ngs Other reference directions will cause a significant danger of confusion 2 3 9 Checking the Variation adjustment After switching on the Controller Unit the test routine will start The reference display 17 shows VAR for variation At the end of the test routine the adjusted value fort he variation is shown for 3 seconds on the digital bearing display 02 2 22 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 10 North Adjustment The correction value set for north adjustment is shown on the frequency display 8 Fig 2 1 when the buttons TEST 7 and REPEAT 14 are pressed simultaneously Corrections can be made in 0 5 steps in a range of 90 2 3 11 Frequency Deviation The RTC 1100 controller incorporates a measuring device to monitor the frequency deviation of the signal being received If the frequency drift becomes excessive 5 kHz bearing evaluation is inter rupted This condition is signalled by the LED 05 Fig 2 1 in the display field 2 3 12 Error Indication The equipment has a wide range of self test devices If an error is discovered lamp 06 Fig 2 1 in the bearing display field lights up Additionally the error code is shown flashing at 1 sec intervals in the frequency display 08 Display E RR 7 Synchronisation Phase measurement Data transfer or power supply or re ceiver unit EEPROM CAUTION If an error message appears the unit no longer functions 2 2
65. ns fuse holder Mains connection Dummy panel 2 5 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 STOP SCAN 121 500 MH Fig 2 1 Front view 2 6 User Manual RT 1000 Rev 2 01 RHOTHETA Elektronik GmbH pv yuon Parallel Port f i i voll h l d d pv oseud I M i ae Hqui9 4140 340 3 VL3H LOHM 3 0001 13 uono uiq pan 7 90LL soi ZOLL E 9 Data Port N E X ft N e AO ZIS HL V IA 399 KE N Ave 062 HOBLI 221 291 EFTA AUST HS CL 201 IMASH EFTA M HGLEL AZL 231 d Sim 4 9 Fig 2 2 Rear view 2 7 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 2 Preparation for Use 2 2 1 Earthing The RTC 1100 Controller housing is earthed by means of the earthing contact in the mains plug At the rear of the housing there is an earthing screw 31 M 6 This should be used to make a low impedance and low inductivity connection between the unit and earth potential system earth Connect the con troller to earth using the same connection as for the other equipment at your workplace in order to avoid dangerous voltage peaks between the different units in case of a lightning strike If using th
66. nst angle of elevation for antenna heights 23 m and 3 5 m E N E wy e Vertical diagram for h 2 23 m Vertical diagram for h 2 3 5 m o NS y N S 2 Y ad Fig 4 5 Signal strength lobes plotted against angle of elevation The following conclusion may be drawn The best position for a direction finder antenna is on a flat surface at a distance from vertical reflectors only 3 5 to 4 m above the ground 4 8 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 For reasons of cost we often receive the request that the direction finder antenna should be put on the roof of the tower containing the direction finder equipment Such requests must be handled on a strictly case to case basis This position on top of the tower may be successful if the surrounding area forms a very absorbent diffuse reflector e g wood grassed runways wooden hangars covered with roof tiles bushes In con trast lakes rivers concrete runways flat tin roofs a high ground water level i e all surfaces which are mirror reflectors make the tower an unsuitable set up position Particular problems are caused by sloping tin roofs because their reflections are not in the azimuth and so can be expected to cause bearing errors Wide base direction finders are more susceptible to the field strength being cancelled out see Figure 4 5 than narrow base direction finders because
67. oadcasts In this case the wavelengths are approx 0 5 m a ze Degree Dipole o S aor 3 3 amp Dipole Transmitter Receiver ye A Wavelength v Velocity of Propagation c Velocity of light b Transmitt Receiver Isophases Fig 4 1 Free space propagation of radio waves 4 3 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 The cause of these effects is the propagation behaviour of electro magnetic waves Figure 4 1 gives an extremely simplified representation of even radio wave propagation in free space The sine wave in Part a corresponds to the instantaneous value of the electric field on the plane path to the receiver Part b is the vertical projection of Part a The circles represent the lines of equal phase relations for even waves If the distance between transmitter and receiver is adequate these are practically straight lines when they reach the receiver location Such an idealized situation is not to be found in built up areas and especially not in mountainous regions In such areas the propagation path is obstructed by obstacles mirror reflectors diffuse reflectors with and without absorption characteristics diffracting edges and resonators Reflectors and conducting rods are effective as resonators if their size is approximately that of the wavelength to be received Therefore reflections increase as wavelengt
68. oding consists of Antenna System RTA 1300 A Receiver Unit RTR 1200 A Controller RTC 1200 A B for Class of Emission A2X ELT modulation bearing error 2 has been tested for compliance with the requirements laid down in the Technical Regulations of the Federal Institute for Flight Safety TV 201 Standard Specifications for automatic direction finder systems extracts from Technical Regulations for direction finder systems used in flight communication The unit fully complies with the rules laid down by the Federal Institute for Flight Safety BFS in agreement with the Central Telecommunications Office FTZ of the German Federal Post based on the Regulations for radio service of the international telecommunication treaty The unit also meets the requirements of the Federal Ministers for Transport BMV and Postal and Telecommunication Affairs BPM as well as corresponding to the guidelines and recommendations of the International Civil Avia tion Organisation ICAO for aeronautical telecommunications Taking into account the conditions stat ed overleaf it is therefore approved as sample for production and distribution in the Federal Republic of Germany The unit carries the series test No B 458 92 Frankfurt Main 17th of March 1992 Signature Official Stamp 5 11 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 Translation CONDITIONS 1 Every unit carrying the FTZ series test number a
69. omati cally 2 47 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 If the frequency is not entered correctly within 10 seconds the controller switches back to the last frequency set 2 3 4 2 Calling up Frequency Memory Frequencies may be called up from frequency memories 0 to 9 using the R Recall button and buttons 0 to 9 in the key pad for entering frequencies 13 Fig 2 1 First press the R button and then number 0 to 9 as required Example Call up frequency memory 0 Input Frequency display 08 F TS B e g 121 500 If the frequency has not been called up from the frequency memory within 10 secs after pressing the R button the controller switches back to the last frequency set 2 3 4 3 Programming the Frequency Memory The current frequency set can be entered into the frequency memory position 0 to 9 This is done by pressing the store button and buttons 0 to 9 in the key pad for entering frequencies 13 Fig 2 1 Press the store button and the button for the desired memory number simultaneously Example Program frequency memory 0 EN The last frequency set is automatically programmed into an additional frequency memory Thus the frequency set is retained even after the unit is switched off Note It is also possible to store channel numbers for maritime radio communication into the frequency memory This may be useful for scanning of frequency memories 0 to 9 see section 2 3 6 2 18
70. p for error in receiver Control lamp frequency deviation positive negative Control lamp for receiver squelch Receiver module Receiver test jack Control lamp receiver supply voltage Receiver interface Receiver display Switch remote operation or manual for test purposes Button for upward frequency change in local mode Button for downward frequency change in local mode Button without function Switch for level or frequency indication Slot for manual squelch adjustment BNC jack for RF antenna signal Antenna control terminal strip Antenna control connection Data signals terminal strip Data cable bushing Data cable Power supply terminal strip Fuse for DC heating Option Fuse for 24 V power supply Dummy cover for additional cable bushing Fuse receiver unit Fuse receiver unit Fuse receiver unit and AC heating Fuse receiver unit and AC heating Mains power cable 3 3 User Manual RT 1000 Rev 2 01 3 3 2 10 1 3 3 2 10 3 3 3 2 10 3 3 3 2 10 2 3 3 2 10 4 3 2 5 3 2 5 3 2 6 3 2 6 3 2 6 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 De essen Senne Ten Mains power cable bushing L Earth connection screw Power Select Mains voltage selector 115 230V OK Power supply control lamp 45V 4 15V 15V Ls Lues radona bearna crane Opie __ Terminals acon bering chanel Open xus Adespawmmis a Jaune Iessen JL 3 4 RHOTHETA Elektronik GmbH U
71. quirements applicable to the unit laid down in the VDE Regulations The keeping of the VDE Regulations is not object of the sample test 5 12 RHOTHETA Elektronik GmbH 5 2 In User Manuale RT 1000 Rev 2 01 Antenna cable RTA 1307 A terwiring of the Direction Finder RT 1000C Direction Finder Antenna RTA 1300A 6x Flat cable BNC plug jack I I NORD ya SUED WEST OST Zeie x Schirm NORD SUED i WEST OST GND 15V EE Round plug vue BNC X15 connection jack Receiver Unit RTR 1200A X4 Terminal strip Earth connection d n screw 02 01 03 04 05 06 48kHz 1 48kHz 2 P PHI 1 P PHI 2 DATA 1 DATA 2 Data cable YS xax N F F 4 lt 5 5010 lt Earth connection 10 12 02 04 06 08 screw b 115 230 V 16A gt 115 230 V 16A 25 pin D Sub connector Data Port Controller RTC 1100 A 5 13 RHOTHETA Elektronik GmbH 5 3 antenna cable vale E RTA 1307 User Manuale RT 1000 Rev 2 01 Interwiring oft he Direction Finder RT 1000 C 2 Channel DF Antenna RTA 1300A 6 x flat BNC male tab Jack n x oe s sheeld NORD SUED 03 WEST OST GND 15V GND bolt circular
72. r Insert fuses F2 and F3 into the fuse holder according to the selected mains voltage 115 V IEC 127 T315H 250V 230 V IEC 127 T160H 250V Mains power connection Mains fuse holder Fig 2 4 Mains power connection mains fuse holder WARNING Before opening the fuse holder make sure that the unit is dis connected from the mains supply 2 2 4 DC Voltage Connection The RTC 1100 Controller is fitted with a DC supply connection This allows the unit to be operated using batteries or a 24 V DC mains connection Connection is through the red pole terminal 33 Fig 2 2 to the positive pole and blue pole terminal 34 to the negative pole of the power supply The pole terminal 34 connection is connected to the housing earth inside the unit 2 9 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Fuse F1 inserted in the fuse holder 16 protects the unit during DC operation Use a IEC 127 T1 0H 250 V fuse The supply voltage range for DC voltage is 24 V DC with a permitted tolerance range of 10 20 96 CAUTION Voltages greater than 30 V may lead to the unit being damaged beyond repair 2 2 5 Power Supply The unit can be alternatively used with mains power or 24 VDC supply When connecting the unit to a power supply ensure that the mains ON OFF switch 15 Fig 2 2 at the rear of the unit and the ON OFF switch 12 Fig 2 1 at the front are both switched off In ord
73. r unt 20 to 55 C Storage temperalure a 40 to 60 C due serial V 24 RS 232 C parallel 1 7 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Bearing diSspilgyy u eee ete eee ead Response time lt 0 3 s A Miel 3 digits with 7 segment LED indicator Resolution ne nn 1 Bearing QDM QDR QUJ QTE Updating BCEE approx 1 indication s B Dual compass dal 2 concentrical circles of LED points R8soluti n nn een 10 Bearing reference u QDR Updating rate Outer circle curet ee approx 1 indication s Inner ere ee 47 indications s Monitoring Built in loudspeaker Modulation MOIE Tore e A3E Monitor outputs k w ete ee tete ete e teu approx 500 mW 4 to 8 Q Biel e eo erroe ere Wie citet 600 Q balanced 0 dBm m 0 6 Ground transmitter suppresslon with external contact to ground Dimensions Mass Controller aset ei t eet eh 19 desk top model 3 UH prepared for rack installation Dimensions H x W x D 132 5 x 448 x 370 mm Weight uo Scop er een 8 1 kg RECOVER Unit ose e e ctr erat test dtd Plastic cabinet for wall mounting IP 65 Dimensions x W x D 250 x 340 x 285 mm Weight na oa oe 6 9 kg Antenna system Dimensions Diameter x 400 x 1120 mm with lightning rod and
74. rminal or Data Transmission Device 2 33 2 3 25 Port Parallel Interface 29 u u J 2 34 2 3 25 1 Par Port Terminal Wiring 29 u 2 34 2 3 25 2 Time UE 2 35 2 4 Installation Dimensions 2 36 2 2 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 1 2 2 2 3 2 4 2 6 2 7 2 8 List of Figures gl elle 2 6 ROAR 2 7 Mains elle EE TE 2 8 Mains power connection mains fuse holder 2 9 Wiring diagram for ground transmitter suppression 2 15 Wiring diagram for ground transmitter suppression with non floating contact 2 15 D sub jack Houer 2 15 Bearing Cis EE 2 16 2 3 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 1 Key to Front and Rear Views All the position numbers refer to operating elements shown in the front and rear views Figure 2 1 and Figure 2 2 EE N E S W N E S W gt lt TEST Frequency Sd STANDBY OFF ON REPEAT 121 500 MHz STOP SCAN QDM QDR QUJ QTE Line F1 OK Data Port Sync Dimmer Digital bearing display Bearing direct
75. s and for determining the system accuracy at the actual installation site a flight check should be carried out To do this a continuous signal transmitter is fitted in the aircraft which then performs circular flights about the site of the direction finder If the communication system of the aircraft is used as a transmit ter check beforehand whether this is suitable for continuous operation The radius of the circle and the flight speed shall be selected such that the lag error effect when de termining the bearing is negligibly low It must therefore be ensured that the angular velocity does not exceed 0 3 5 In the case of all flight checking measurements it must be ensured that an adequate reception field strength is present at the site of the direction finder antenna Because of the quasi optical wave propa gation characteristic of VHF signals there must also be a theoretical sight contact to the transmitter If the transmitter is masked by hills mountains buildings or woods the direction finder antenna cannot evaluate the directly transmitted signal but instead assesses a signal which reaches the direction find er antenna via reflections This normally leads to considerable bearing errors The instantaneous position of the aircraft can be determined by tracking with a theodolite or using a GPS receiver on the aircraft 4 17 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 4 4 2 1 Determining the Position Using
76. s well as the number on the front designat ed RT 1000 VAR A C must fully comply both electrically and mechanically with the sample tested by the Federal Institute for Flight Safety 2 Each change or addition to design or circuit of the unit deviating from the sample necessitates additional testing of this unit by the BFS 3 Concerning the production of series units complying with the sample BFS reserves the right to carry out random tests of individual units 4 Permission to manufacture and distribute this unit becomes extinct after a period of five years An extension can be granted The extension must be applied for in writing six months prior to ex tinction 5 This certificate in itself does not permit the unit to be taken into operation Set up and operation of radio facilities using this unit even for demonstration purposes depend upon a licence issued by the DBP German Federal Post Application is to be made to the BFS which will pass the forms on to FTZ with the request to issue the licence The licence will be handed over to the ap plicant by the respective OPD Oberpostdirektion 6 The issued test certificate does not entitle the licensee to make any demands under patent law It does not relieve the licensee in any way from observing the protective rights of others and does not include any protective claim as provided for under patent law 7 The manufacturer himself is fully responsible for meeting any safety re
77. ser Manual RT 1000 Rev 2 01 RTR 1208 101 X 01 Fig 3 1 Front view of receiver unit 3 5 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 E zJ1 eil gt z E E s 2 E E 3 su 3 i amp z o 8 u Bee E ai Xj RC Fig 3 2 Front view additional bearing receiver option 3 6 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 2 Preparation for Use 3 2 1 Setting the Mains Voltage The RTR 1200 Receiver Unit can be operated on 115 V or 230 V 15 mains voltage The unit is factory set for a mains power supply of 230 V Before using the unit check that the correct operating voltage range is set Use a slot screw driver to move the mains voltage selector 39 Fig 3 1 This selector is on the front panel of the RTX 1401 01 Power Pack module Selector position for 230 Volt range 2 Permissible operating voltages Vmin 195 5 V Vmax 264 5 Vims 115 Selector position for 115 Volt range 2 Permissible operating voltages Vmin 97 75 Vims Vmax 132 25 Vims Bild 3 3 Mains voltage selector In addition make sure mains voltage fuses F2 and F3 are correct for mains voltage range selected see section 3 2 2 WARNING If the mains voltage selector is not set correctly the unit may be damaged beyond repair 3 7 RHOTHETA Elektronik Gmb
78. status and frequency at intervals of approximately one second Immediately after any usable bearing signal is applied the controller transmits the status message This is followed by the transmission of the bearing values average and live The average bearing is transmitted approximately four times per second and the live bearing approximately 18 times per se cond In between the messages status and frequency are output at intervals of approximately one second If the bearing signal changes to the off state the controller immediately transmits the status information Bearing signal off Bearing signal on Bearing signal off SF SF SALLLLALLLLALLLLALLLLASFLLLLALLLLALLLLALLLLSFALLLLALLSFS SF S Status F Frequency A Average bearing L Live bearing 2 30 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 24 2 Data Input All received data are checked for correct syntax and plausibility referring to the actual unit setting All received data are also checked for compliance with the limiting values The data input is monitored over a time out of 100 ms i e all ASCII characters of a message must be transmitted to the bearing unit within this time If errors are found the received commands are not carried out A correct data input momentarily sets the direction finder to the required setting Status X L 0 Reset N Live bearing off 2 Live bearing on 3 Slave display identification 1 4 Ground transmi
79. the controller 8 13 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 3 2 9 Antenna Control Jack The antenna control D Sub jack 2 is used to connect the RTM 1500 Dummy Antenna The same signals are transmitted as at the antenna control connection 21 Additionally the R L signal is availa ble OST X2 Antenna control signal east WEST X2 Antenna control signal west GND Ground GND Ground 15V X2 15 V supply SUED X2 Antenna control signal south NORD X2 Antenna control signal north R L Right left rotation change over signal 15V X2 15 V supply 2 3 4 5 6 7 8 9 3 14 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 3 2 10 Receiver Operation The receiver in Receiver Module RTR 1204 1205 8 11 is controlled exclusively by the controller in normal operation receiver setting as described in section 3 2 7 If a different operating mode is re quired for test purposes or if the unit has to be serviced the receiver can also be manually adjusted 3 3 2 10 1 Remote Local Switch 13 Remote position Standard operation mode Receiver controlled by Controller Unit Local position For test purpose the working frequency can be changed locally In this position the frequency display at the Controller side shows ERR 9 3 3 2 10 2 Level Frequency Special Switch 17 Standard position of the switch is frequency The display 12 shows the actual frequency In position Level
80. the display 12 shows the signal level 0 99 96 not calibrated The position Special has no function yet 3 3 2 10 3 Frequency Selection key T 4 14 15 At mode local it is possible to increase the frequency in 25 kHz steps by pressing the key T 14 or decreasing the frequency in 25 kHz steps by pressing the key J 15 3 3 2 10 4 Squelch adjustment potentiometer 18 Behind the hole 18 there is a potentiometer which allows a squelch adjustment For this a small screw driver is necessary Normally the factory setting is all right If turning clockwise the squelch threshold god down counterclockwise the squelch threshold rise 3 15 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 4 Installation Dimensions 332 D A N N FEN 6 9 c3 di mi 4291 O O im 1205 ni Biza E E ER 5 eo D a Y C2 2 Antena Power Suet i e 9 E ES eo n H ex N e I e Qa S 340 355 3 16 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev
81. the gaps in the area diagram are severely limited and so the probability that individual dipoles will be affected by this rises as the base area increases In order to carry out checking and acceptance the direction finder is subjected to a flight test Figure 4 6 By means of circular flights approx 5 to 10 km away the angular accuracy and influences due to vertical reflectors are calculated These circular flights should be carried out in both directions in order to eliminate any possible lag error in the direction finder display The aeroplane is tracked using a theodolite erected next to the direction finder antenna and angle values from this are compared with those from the direction finder display During the criss cross flights the aeroplane flies across the direction finder from various directions to find out detrimental ground reflections and the cone of silence the area above the direction finder where no usable information can be gained from the direction finder These over flight measurements are especially important for testing the usefulness of a direction finder antenna set up on the tower 4 9 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 Circular flight a 7 a E Es Ze Z N jf Z N 7 E N Z LA 7 BN N E E g PR IC E p al Direction finder antenna place ee E 4 D N S gt
82. the utilization of the electromagnetic wave field generated by the transmitter to be found Good results are only possible if this wave field at the direc tion finding position is largely undisturbed Regrettably incoming wave fields are distorted significantly in the tower area due to reflections and shadows from surrounding buildings Even large and costly antenna systems can only solve these problems resulting from physical facts unsatisfactorily With remote operation the direction finder system RT 1000 realizes a concept permitting an antenna position to be chosen which is almost totally independent from the controller s position Hence the antenna with its weatherproof receiver unit may be installed at a location within the area which is opti mal for direction finding The connection to the controller is made through a 6 wire line Expensive equipment and costly infrastructures are eliminated in contrast to usual direction finding systems The Direction Finder System RT 1000 realizes an equipment family which can be utilized in a flexible manner Apart from the advantage of being service friendly the consequent modular design makes it possible to have several system components variously equipped so that the optimum system configu ration is available with a minimum of equipment depending on the application There are four major variants for the traffic direction finding area 1 2 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2
83. tors 4 15 Setting up the ground transmitter 4 16 DF signal 2 and R L signal for undisturbed reception 4 20 DF signal 2 and R L signal with a modulated reception signal 4 20 DF signal 2 and R L signal with noisy reception signal 4 21 AD RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 4 1 Set up Notes Normally the major factor concerning radio reception is to transmit music speech and pictures without distortion How and by what route the radio waves get from the transmitter to the receiver is of little importance However everyone must have realized that although when using a portable radio medium wave re ception 0 5 to 1 5 MHz wavelength 600 m to 200 m is hardly affected by the position and envi ronment of the receiver but excellent VHF reception 87 to 102 MHz 3 m depends heavily on the position and direction of the rod antenna Moving the radio even fractions of 1 m is decisive in this case as can be heard from radio reception in a traffic jam Such reception changes are even more noticeable with portable television sets using rod antennas to receive UHF br
84. truction and protocol 4 Performance of test See document 12 9 1 0004 8 1 1 Procedure Factory Acceptance Test Direction Finder System RT 1000 5 16
85. tter suppression 9 Initate watchdog reset Frequency XXXXXX 118 000 136 975 MHz E kHz units E kHz tens kHz hundreds MHZ units MHz tens MHz hundreds 1 Changes of frequency via serial data interface will be stored Status is approx active for 1 sec The following example shows the data sequence for the frequency command F125375CR Frequency 125 375 MHz Final character decimal 13 Content decimal 49 50 53 51 55 53 Header decimal 70 After switch on of the RTC 1100 Controller the serial interface is in the live bearing on state If transmission of the live value is not required the instruction live bearing off must be transmitted each time after the controller is switched on or the supply voltage is interrupted 2 31 RHOTHETA Elektronik GmbH 2 3 24 3 Technical Data Data format Stop bit Parity Baud rate Mode Level Bearing output 2 3 24 4 s User Manual RT 1000 Rev 2 01 ASCII 8 Bit 7 data bits 1 parity bit ASCII II character format ODD 1200 asynchronous RS 232 High 3 V to 15 V Low 3Vto 15V QDR Ser Port Plug Wiring 28 Multipoint connector 9 way Type D sub miniature not 4 mtwed Receive Data Transmit Data not wired Signal Ground not wired not wired not wired not wired 2 32 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 24 5 Connection to a Data Terminal or Data
86. upply will always be off the mains However if mains voltage is interrupted the power supply module switches automatically over to DC supply Since Receiver Unit RTR 1200 can only be switched off by separation from the supply voltages a suitable switching device is required for the DC voltage supply facility Allocation of terminals DO volage source 24V BAT 28 Positive pole 24 VDC X3 1 X3 2 24V BAT 28 Negative pole 0 V earth 3 8 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 3 2 4 DC Fuse The DC voltage input is protected by fuse F5 27 Fig 3 1 F5 30 IEC 127T1 0H 250V DC voltage supply 1 A slow blow Input voltage range Vmin 21 5 V Vmax 29 0 V WARNING Voltages greater than 30 V may lead to the unit being damaged beyond repair 3 2 5 Connection of RTA 1300 Direction Finder Antenna The RTA 1300 Direction Finder Antenna Direction Finder is connected to the receiver unit via an RF Antenna SE RTA 1300 RTR 1200 and control cable each Ensure that the antenna mast is well ee earthed and that there is also a low im FA ne L pedance and low inductivity connection EN e A i between the RTR 1200 Receiver Unit d b n earth screw 35 Fig 3 1 and earth po tential Ensure that all applicable safety Ewe guidelines are observed Antenne Cornii Cabl
87. uses slow phase shifts between W and R signals and therefore few amplitude fluctuations at the direction finder EE IAL PPM TETUER Ground Fig 4 4 The phases between a direct wave W and reflected wave R Ground reflection causes a special problem Reflections from an ideal level ground surface around the direction finder antenna do not actually lead to errors in direction finding but dependent on the angle of elevation lead to field strength indentations which with ideal ground reflection may go down to zero It must now also be mentioned that reflections of course influence the reception level after all this is the critical factor in VHF radio reception Because the resulting reception field strength at the direction finder antenna is made up of the vectorial addition of direct and reflected beams the phase relation between both signals is critical Figure 4 4 shows that if the transmitter is moving e g aeroplane the phases between a direct wave W and reflected wave R should shift as slowly as possible in relation to the movement of the transmit ter This is exactly the opposite of requirements for vertical reflectors The following conclusions can be drawn the horizontal reflector should be as near as possible to the direction finder antenna AT RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 In other words the antenna should be fixed close to the ground Figure 4 5 shows the signal strength lobes plotted agai
88. utual recognition of their conformity the R amp TTE Directive 1999 5 EU Interoperability of the European Air Traffic Management Network the Interoperability Regulation EC No 552 2004 1 6 Notified Body 1 7 Reference to the Community Specifications EN 60950 1 2006 A11 2009 A1 2010 EN 60950 22 2006 A11 2008 1 8 Authorised Representative Dipl Ing FH Wolfgang Pichl Managing Director RHOTHETA Elektronik GmbH Dipl Ing FH Oliver Lang Deyhle Managing Director RHOTHETA Elektronik GmbH 2 Erkl rung RHOTHETA Elektronik GmbH 82418 Murnau declare under our own responsibility that the interoperability constituent to which this declaration refers complies with the EU Directives and relevant Technical Specifications of Interoperability EN 61000 6 1 2007 EN 61000 6 3 2007 A1 2011 Conformity assessment procedures referred to in appendix Il of the R amp TTE Directive 1999 5 EC 4 Murnau 2012 07 06 1 Authorised Representative 2 Authorised Representative LA 2 Wy iA He y 7 L Wolfgang Pi hl Oliver Lang Deyhle 5 7 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 5 1 7 Approval Certificate BZT BUNDESAMT FUR ZULASSUNGEN IN DER TELEKOMMUNIKATION ZULASSUNGSURKUNDE Zulassungsnummer A102841C Zus Kennzeichen LO Objektbezeichnung RT 1000 steht f r A oder C Zulassungsinhaber Schwarzfischer amp Co OHG RHOTHET
89. wever it is only possible to compensate for a limited phase val ue For this reason make a pre adjustment to the centre of the variation range The adjustment can be made either using the RTM 1500 Dummy Antenna or aligning of the labelled antenna radiator North dipole onto a transmitter 22445 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 2 9 1 Adjustment Using RTM 1500 Dummy Antenna Option e Connect the dummy antenna instead of the RTA 1300 Direction Finder Antenna see description of RTM 1500 Dummy Antenna e Feed in a VHF signal in the ATC band range with a signal level of approx 100 mV at the dummy antenna RF input and adjust the receiver to the appropriate frequency Move the antenna signal switch on the dummy antenna to the 180 position Since the direction finder was pre set in the factory the bearing display must show QDM 180 and QDR 0 on condition that the north adjustment is set to 0 see 2 2 10 QDM 0 and QDR 180 may also be displayed if the phase is completely misaligned e Phase adjustment can be set using the two rotary switches 28 Fig 2 2 fine and 29 coarse The total of 256 steps 8 bit on the coarse switch are divided into 16 steps and these coarse steps are sub divided into a further 16 steps on the fine switch Use these rotary switches 28 and 29 to find the middle of the range where the green control lamp 30 lights up The QDM display should then show 180 2 2 9 2
90. wiring AF audio signal floating Bearing signal 1 Bearing signal 2 Bearing signal 2 Data communication line 1 Data communication line 1 15 Volt power supply Data communication line 2 Data communication line 2 Reference signal 1 Reference signal 1 Reference signal 2 Reference signal 2 AF audio signal floating Serial 5 V interface Serial 5 V interface RS 232 interface receive RS 232 interface transmit AF input Input for ground transmitter suppression Squelch input Ground Ground 15 V power supply 5 V power supply 2 26 RHOTHETA Elektronik GmbH User Manual RT 1000 Rev 2 01 2 3 21 Sync Synchronisation Indicators 21 22 The green indicator 22 Fig 2 2 lights up if in the controller the electronics in the Frequency Pro cessing module RTC 1107 is synchronised with the reference signal from the Antenna Control module RTR 1201 The red indicator 21 lights up if the above mentioned synchronisation is not achieved When this indicator is on it indicates the following possible malfunctions Receiver unit not ready for operation e g switched off Data line defective RTR 1201 Antenna Control module defective RTC 1107 Frequency Processing module defective 2 3 22 DF Signal 2 Test Plug 24 The test signal for bearing determination is applied to the test connector 24 Fig 2 2 The signal can be monitored using an oscilloscope It indicates the quality of the bearing va
91. y from the operators location triangulation Antenna Controll Receiver Unit RTR 1200 A RF Kabel El P 6 wire data cable Controll er RTC 1100 A max 10 km III D cT Rs232 amp Audio Modem RS232 RS485 to TCP UDP Converter Line Audio to Streaming Audio Converter Intanet Internet VPN Modem TCP UDP to RS232 RS485 Converter Streaming Audio to Line Audio Converter RS232 amp Audio Slave Display RTS 1100 A 1 1 7 Configuration E simultaneous 2 channel operation The DF system is equipped with a 2 receiver module and a additional Controller This offers 2 inde pendent operator sides This configuration can be combine with all other configurations At locations where the system has to operate simultaneous on 2 different frequencies Application DF Antenna RTA 1300 A Antenna controll lt RF Kabel Receiver Unit RTR 1200 A E IS 6 wire telephone cabl max 10 km
92. yhle 5 6 RHOTHETA Elektronik GmbH User Manuale RT 1000 Rev 2 01 RHOTHETA Elektronik GmbH Ip iS Dr ingeberg Heckel Sv 2 EC declaration of suitability for use Gemen RTA 1300 Elektronik GmbH Tol 49 8841 4879 0 E Mail email rhothotade Fax 498841 4879 15 intemet www momeide Rev 3 00 EC Declaration of Suitability for Use of Interoperability Constituent Name and Address of the Manufacturer Interoperability Constituent RHOTHETA Elektronik GmbH RTA 1300 Kemmelpark VHF Compact Direction Finder Dr Ingeborg Haeckel Str 2 RHOTHETA RT 1000 82418 Murnau Antenna 1 Common Information to the Interoperability Constituent referred to in EC No 552 2004 Annex III 1 1 Reference Number of the Regulation Essential Requirements of the Interoperability Regulation EC No 552 2004 1 2 Manufacturer RHOTHETA Elektronik GmbH Kemmelpark Dr Ingeborg Haeckel Str 2 82418 Murnau 1 3 Description of the Constituent Antenna unit of the VHF Compact Direction Finder RHOTHETA RT 1000 for the frequency range 118 136 975 MHz and 156 174 MHZ 1 4 The following procedures have been followed in order to declare suitability for use Conformity assessment procedures referred to in annex Il of the R amp TTE Directive 1999 5 EC 1 5 Relevant Provisions Relevant Provisions of the European Parliament and of the Council Radio Equipment and Telecommunications Terminal Equipment and the m

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