ATS KRT2 VHF TRANSCEIVER User Manual DE 3000 800100e R5a Manual KRT2

ATS Inc VHF TRANSCEIVER DE 3000 800100e R5a Manual KRT2

Users Manual

KRT2VHF CommunicationTransceiverP/N 100-( )-( )Operation and InstallationManualUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.001 of 1
Record of Revisions RevisionDateSubject106 Juni 2010Erstausgabe220 Sep 2010Revision Stecker / Redaktionelle Änderungen305 Feb 2011Editorial update404 Mai 2012Cable-harness correction516 Mai 2012Software advantage for battery indication, error reports List of Service-Bulletins (SB)Service-Bulletins have to be inserted in the manual, and entered in the table.Service-Bulletins have to be inserted in the manual, and entered in the table.Service-Bulletins have to be inserted in the manual, and entered in the table.Service-Bulletins have to be inserted in the manual, and entered in the table.Service-Bulletins have to be inserted in the manual, and entered in the table.SB NumberRev. No.DateIssued DateInsertedNameUnit overviewItem No.Product OverviewBasic VersionIntroduction of::• 2 Standard Microphone Inputs• Auxiliary Audio Input• DUAL Watch FunctionUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.002 of 52
User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.003 of 52
TABLE OF CONTENTS......................................................................................................................................GENERAL 6........................................................................................................................................Symbols 6...............................................................................................................................Abbreviations 7.........................................................................................................................Customer Service 8.......................................................................................................KRT2 Transceiver properties 8.......................................................................................................................CONTROL general 9.........................................................................................................Control Elements Overview 9.......................................................................................................................................Display 11................................................................................................................................OPERATION 14.......................................................................................................................................General 14...................................................................................................................ON / OFF Switching 14...................................................................................................................Frequency Selection 15....................................................................................................Direct Frequency Selection 15.......................................................................Frequency Selection from the Favourites List 15..............................................................................................Storing and Editing Favourites 16...................................................................................................................AUD – Audio Menu 18.......................................................................................................................VOL – Volume 18.........................................................................................................................SQ -- Squelch 18........................................................................VOX – Intercom Voice Trigger Level Setting 19................................................................................................TXm – PTT Switch Selection 19.........................................................................................................INT – Intercom Volume 21.....................................................................................EXT – External Audio Input Volume 21.............................................................................DIM – Display Brightness (Batt.-voltage) 21........................................................................................................CON – Display Contrast 21.......................................................................................................................SIT – Side tone 21...........................................................................................................................MIC – Setup 22..............................................................................................................................DUAL Watch 24................................................................................................................Transmitter Operation 26.........................................................................................................................Self test monitor 27.....................................................................................................................Optical side tone 27.......................................................................................................Resetting to factory settings 28..........................................................................................................................SET UP - Menu 29....................................................................................ERASE – Erasing the Favourites List 29.....................................................................................................................Channel Spacing 30............................................................................................................................Remote Control 30....................................................................................................................................Installation 31........................................................................................................................Installation Hints 31............................................................................................................Telecommunication Data 31.......................................................................................................................Scope of delivery 31.................................................................................Unpacking and Inspecting the Equipment 32....................................................................................................................................Mounting 32...............................................................................................................Electrical Connections 33User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.004 of 52
........................................................................................................Microphone-Connection 33.............................................................................................................Earphone Connection 34..............................................................................................................External Audio Input 34...................................................................................................................Finally Audio-Setup 35For gliders 35....................................................................................................................For motor gliders 35....................................................................................................................Für Motor planes 35.........................................................................................................................................Wiring 36...........................................................................................................................Wire Gauges 36.................................................................................................Connector Pin-Configuration 36......................................................................................................................Wiring Diagram 38................................................................................................................Connection support 40......................................................................................................................................Antenna 41..................................................................................................................Antenna Selection 41................................................................................................Installation Recommendation 41...................................................................................................................Microphone general 42..............................................................................................................Post-Installation Check 42.................................................................................................................................Starting Up 43................................................................................................................................Accessories 43....................................................................................................................................Drawings 45............................................................................................................................Dimensions 45............................................................................................................Installation Directions 46........................................................................................................................................ANNEX 47..................................................................................................Frequency / Channel- schedule 47............................................................................................................................Technical Data 49User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.005 of 52
1.GENERALThis manual contains information about the physical, mechanical and electrical properties as well as a description for the operation and installation of the VHF airborne transceiver KRT2.1.1. SymbolsWARNINGNon compliance may cause personnel injury due to radiation or fire.CAUTIONNon-compliance may cause damage or incorrect operation of the transceiver.INFORMATIONUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.006 of 52
1.2. AbbreviationsAbbDescriptionDefinitionPTTPush to Tal kTransmitter activationVOXVoice operated intercomVoice level setting fort he activation of the intercomINTIntercom levelIntercom volume level settingSQSquelchSquelch settingDIMDimmingDisplay brightness settingCONContrastDisplay contrast settingEXTExternal audio inputExternal Audio input level settingUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.007 of 52
1.3. Customer ServiceIn order to process returned units most expeditiously, please fill in the form xxxxxxxxxxxxxxxxxxx to be found under AIRplus Service at www.airplus24.com.Suggestions which will improve this manual are very much appreciated at: www.airplus24.comInformation concerning software updates are available under AIRplus Avionics at www.airplus24.com1.4. KRT2 Transceiver properties• VHF airborne transceiver• Frequency range 118,000 to 136,975 MHz• Channel spacing 8,33/25 kHz (2278 channel)• Fast channel selection• 4 separate microphone inputs (2 x standard or 2 x dynamics)• Audio-input for other audio devices• Installation: Standard panel cut-out (57 mm)• 100 user definable frequencies with up to 8 character designatorsContinuous transmissions will be turned off after 2 minutes. (Stuck mic function).User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.008 of 52
2.CONTROL general2.1. Control Elements OverviewUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.009 of 52
ON / OFFSelf-locking switchDUAL WATCH1. Scanning between the Active and Standby frequencies2. Positioning cursor to the left when programming the station designatorAUDIOSELECT1. Stepping through the audio menus VOL SQ VOX TX INT EXT DIM CON SIT and MIC2. Positioning cursor to the right when programming the station designatorFAVOURITES1. Frequency and designator selection from the favourites list2. Programming of favourites (frequency and designator)EXCHANGEExchange of the Active and StandbyfrequenciesFREQUENCY1. Selection of the frequency rangeMHz, 100kHz, 10kHz 2. Toggles between frequency and designator when programming the favouritesUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0010 of 52
TURNINGKNOBSets all variable values in any menu1. Volume setting of headsets and speakers2. MHz/kHz selection of the standby frequency in 3 different ranges3. Favourite selection4. Alpha character selection when programming favourites5. Change of microphone settings2.2. DisplayIndicationMeaningRemarksRXReceptionRX is displayed during reception with a squelch value of 02 or moreTXTransmissionTransmitter operates normallyTeTransmitter was turned off automatically after 2 min continuous operation125.100Active frequencyKIELActive frequency station designatorDisplayed when frequency and designator is stored in the favourite listVOL ……Receiver volume level (default after a certain time delay)When AUD was pressed the corresponding Audio Menu item and setting is displayedSQSquelch User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0011 of 52
VOXVoice operated intercomDIMDisplay brightnessCONDisplay contrastINTIntercom - VolumeEXTVolume of external devicesTX**PTT button selectionLeft/Right/BothSIDESide toneDuring transmitter operationBREMENStandby frequency station designatorDisplayed when frequency and designator is stored in the favourite listDisplayMeaningRemarkDUALActive frequency ANDStandby Frequency aremonitored simultaneouslyDUAL function is deactivated by frequency change or by pressing the DUAL button again[03](MEMORY)Favourite list index(0-99)When frequency and designator are stored at this index they are displayed125.100 upperActive - frequency134.825 lowerStandby - frequency < The pointer indicates what the turning knob will change 1)VOL SQ VOX…..etc 2)Standby frequency Arrow is positioned in correspondence to the button pressed( AUD or FREQ)BATSupply voltage is low<10,5VBattery low orBattery/Generator faultyUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0012 of 52
Er_ANTAntenna errorBad antenna matcha v eStatus of certain Audio menu functions a = AUX. Input active v = VOX active e = external Intercom switch activeEr_PLLInternal error, no transmissionReturn the transceiver formaintenanceEr_ADCInternal error,Return the transceiver formaintenanceEr_FPAInternal error; unit not usableReturn the transceiver formaintenanceEr_I2CInternal error; unit not usableReturn the transceiver formaintenanceEr_si53Internal error; unit not usableReturn the transceiver formaintenanceEr_D10Internal error; reception corruptReturn the transceiver formaintenanceKey_BlockInternal error; unit not usableReturn the transceiver formaintenanceUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0013 of 52
3.OPERATION3.1. GeneralThere is a normal operating mode in which the turning knob always is connected to the volume (VOL). The normal operating mode can be left by pressing the AUD, FREQ or MEMORY button.When not in the normal mode and there is no pilot action for more than 10 seconds the unit returns to the normal mode.3.2. ON / OFF SwitchingON / OFF switching is achieved with a self-locking switch. After power up the following display will show up: Device-name KRT2 Software- Version e.g. V2.0Gerätename KRT2 Software- Version e.g. V2.0(example)The unit then starts in the normal operating mode using and displaying the data last used.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0014 of 52
3.3. Frequency SelectionThere are two different frequency selection methods: • Direct Input• Selection from the favourite list (index 0-99)3.3.1.Direct Frequency SelectionThe Standby-Frequency is set with the tuning knob in 3 different ranges. The selected range is highlighted and can be changed with the FREQ button.Frequency ranges are: 1xx.nnn 1nn.xnn 1nn.nxxPress the FREQ button once or several times until the desired frequency range is highlighted.When the pointer is not next to the Standby Frequency window, it will be repositioned with the first pressing of the FREQ button. Exchanges the Active and Standby frequencies.When the Exchange button was not pressed, the Standby frequency display will return to its normal appearance after 20 seconds.3.3.2. Frequency Selection from the Favourites ListBy pressing and operating the turning knob a specific favourite list position can be accessed [xx] (xx = index 0 … 99). When frequency and station designator have been defined, they will be displayed in the Standby User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0015 of 52
and station designator windows. The favourite list designators can be sorted in alphabetic order (see 3.3.3). Exchanges the Active and Standby frequencies. The selection procedure can be terminated with either the AUD or FREQ buttons. Without pressing any of these buttons the unit will return to its normal operating mode after 20 seconds.3.3.3. Storing and Editing FavouritesAny displayed Standby Frequency can be given a designator and both can be stored together as favourites in the favourite list. Both, the frequency and designator of a favourite can be edited.First press button and by means oft he turning knob go to the desired favourite list position which may be empty or the favourite to be edited (index [00 …99]).Press the MEMORY button a second time and „–EDIT--„ will show up in the program window. In the designator window a blinking cursor will show up under the most left character. The turning knob selects the desired character.The AUD button positions the curser one character to the right. The DUAL button positions the cursor one character to the left and simultaneously erases this character.The station designator can consist of maximum 8 characters.Press the FREQ button and follow the normal direct input procedure to edit the frequency. User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0016 of 52
Press the MEMORY button in order to go to the station designator window for editing he designator if required.Pressing MEMORY again terminates editing and SAVE? will show up. SAVE? is available for 20 seconds and must be acknowledged by the button. No acknowledgement within 20 seconds results in the termination of the storing procedure.When the button was pressed SORT? will show up.SORT? is available for 20 seconds and must be acknowledged by .When sorting was acknowledged with the button, all 99 favourites will sorted in alphabetical order which can take several minutes.During the sort procedure „RUN nn“ is displayed in the program window, with nn being the running index.When the MEMORY button is pressed during the time when SORT? is displayed the sorting procedure will not start and storing and editing is terminated. The transceiver then resumes the normal operating mode. When the MEMORY button is pressed during the time when „RUNnn“ is displayed the sorting procedure is terminated. The favourite list then is sorted partially only and the transceiver resumes the normal operating mode. Further favourites can be stored or edited by following the normal input procedure.For time saving purposes it is recommended to initiate the sorting procedure after the last favourite has been saved or edited.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0017 of 52
3.4. AUD – Audio MenuAny action in the Audio Menu requires the pointer (<) to be next to the Audio menu window (see picture). When the pointer is next to the Standby frequency window, the pointer can be repositioned by pressing the AUD button once.VOLnn is the Audio menu default display. No action on any control for more than 10 seconds will result in the VOLnn display.Audio Menu items can be accessed in the following order by repeatedly pressing the AUD button.VOL (default) SQ VOX TXm** INT EXT DIM CON SIT MIC Audio menu items to right of the above list are more seldomly used than the left ones. 3.4.1.VOL – VolumeTurning the turning knob changes the receiver volume. VOLnn Range: 01 - 16Die VOL setting only concerns the receiver and not the intercom system. Intercom volume values are set in the INT audio menu..3.4.2. SQ -- Squelch Pressing the AUD button once enables the turning knob to change the squelch level values. User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0018 of 52
SQnn Value range: 01 – 10The Squelch setting is depending on several factors. For engine driven airplanes an initial setting of 05-08 is recommended. Gliders may need a lower setting. The lower the Squelch level value the higher is the input sensitivity. A high sensitivity setting is susceptible to noise from other sources like ignition strobe-lights etc.Standard SQ-level is 05 ... 08. Higher setting may suppress strong input signals. Squelch does not influence the intercom system.3.4.3.VOX – Intercom Voice Trigger Level SettingPressing the AUD button twice enables the turning knob to change the voice level which triggers the intercom. The intercom voice trigger level must be set to such a value which prevents that normal cockpit noise can be heard in the earphones. The intercom system shall only be activated when talking at a normal voice level into the microphone.The higher the trigger level the louder the voice must be in order to trigger the intercom system.VOX on condition is indicated by flag “v”. VOXnn Range: 01 – 10 In case of extreme cockpit noise or uncompensated microphones the VOX system can be deactivated by selecting VOX: 01. When VOX is deactivated, the intercom can only be used by means of intercom switches.3.4.4.TXm – PTT Switch Selection Pressing the AUD button three times enables the turning knob to select certain PTT switches. In addition when one of both PTT switches is disabled (notBoth) the respective microphone channel is disabled during trans-missions. TXm** *- Left / -* Right / ** User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0019 of 52
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3.4.5.INT – Intercom VolumePressing the AUD button four times enables the turning knob to set the intercom volume. INTnn Range: 01 - 103.4.6.EXT – External Audio Input VolumePressing the AUD button five times enables the turning knob to set the external audio input volume. External audio inputs can be audio alarms, voice alarms, music etc.Activation occurs for settings >00 and will be indicated by the flag “a”. EXTnn Range: 00 - 103.4.7.DIM – Display Brightness (Batt.-voltage)Pressing the AUD button six times enables the turning knob to set the display brightness. Display lighting current drain at maximum brightness is only 10mA. Maximum brightness is glare free even in darkness and can be used continuously.Indication of battery voltage (VDC). DIMnn R a n g e : 01 – 103.4.8.CON – Display ContrastPressing the AUD button seven times enables the turning knob to set the display contrast. CONnn Range: 01 - 103.4.9.SIT – Side tonePressing the AUD button eight times enables the turning knob to set the side tone volume. SITnn Range: 01 – 10User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0021 of 52
3.4.10.MIC – SetupEach of the two microphone inputs channels can be configured individually, which enables different microphone types to be used.A maximum of two microphones of same type may be connected to each microphone input channel (see Microphone Connection 5.6.1).The MIC – Setup is the last item of the Audio menu and can be accessed by pressing the AUD button nine times. By pressing the DUAL button repeatedly L, R and AUTO can be selected. L (R) means left (right) microphone input channel. The AUTO function is explained later.By means of the turning knob the displayed microphone input channel amplifier gain (MIC-level01=lowgain,09=highgain) can be selected individually. The microphone signal level is dynamically displayed as bar and as numeric value (from0.00to1.00) in the line below.The initial MIC-level should be 05, the engine should be running, use a headset or earphone and speak at a normal voice level to fine-tune the MIC-level. Whenever a new MIC-level was selected, the dynamic bar indicator should then be at about 50%.When the microphone setup menu is left, the new value is stored.The range of the MIC-level for standard microphones is 01 to 09.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0022 of 52
MIC levels 10 and 11 are special settings for low microphone levels like dynamic micro-phones often used in gliders.10 is used for non-amplified Electret microphones with a 8 volt supply voltage.11 is for dynamic microphones only.In the AUTO mode every 30 sec. the left microphone impedance is measured. When using an Electret microphone and a dynamic microphone is recognized, internal switchover to the dynamic microphone type and vice will take place. When using a dynamic microphone and an Electret microphone is recognized, internal switchover to the Electret microphone type will take place. Microphone type switch over always affects both microphone channels.The present recognized type will be indicated (Mic: dyn/std).To activate the recognition instantly leave AUTO and set back to AUTO.For the std-part the previous individual setup is stored when the menu was leaving. The MIC submenu is left by pressing the AUD button.Additional indicationsAdditional indications for test purposes:AGC: ..... HF receiver Automatic Gain ControlExt: ..... External audio input voltageMic: dyn or Mic: stdIndicates, which microphone type was selected either by the user or recognized in the AUTO mode.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0023 of 52
3.5. DUAL WatchBecause the communication transceiver KRT2 contains only one receiver, DUAL watch is achieved by alternating between the Active and Standby frequencies.The DUAL button activates and deactivates the dual watch function. Deactivation also can take place by pressing either the FREQ or MEMORY buttons.The frequencies to be watched should be selected prior to the DUAL watch selection.Scanning of frequencies is only possible when differentiating between radio noise and radio transmissions. This can be achieved with the squelch system set to a value of 02 or higher.There must be radio noise suppression in order to recognize reception. SQ must be 02 or higher. When DUAL watch is activated, “DUAL“ is displayed on the lowest line. The pointer next to the DUAL display indicates the frequency on which there is reception. The Active frequency always has priority, so the receiver remains on the Active frequency as long as there is reception on the Active frequency. When there is no reception on both the Active frequency and the Standby frequency the receiver scans both frequencies 5 times per second. When there is reception on the Standby frequency the receiver stays on the Standby frequency, however it switches to the Active frequency every 2 seconds for 0.3 seconds. When reception is detected on the Active frequency the receiver stays on the Active frequency. The pointer next to the DUAL display indicates on which frequency there is reception. Activefrequencyreception Standbyfrequencyreception User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0024 of 52
Standby and Active frequencies can be exchanged when in the DUAL mode. The transmitter operates on the Active frequency only.Summary:• Select the Standby frequency to be watched additionally.• With the AUD button and turning knob set SQnn to 02 or higher.• With the DUAL button activate the DUAL watch function.• When there is no reception on both the Active frequency and the Standby frequency the receiver scans both frequencies 5 times per second. • When scanning the Active frequency always has priority. • Deactivate the DUAL watch function with the DUAL or FREQ or MEMORY buttons.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0025 of 52
3.6. Transmitter OperationThe unit transmits on the active frequency (upper line) as long as a PTT (press to talk) switch is pressed. Transmission Reception„TX“ indicates normal transmitter operation.In the lower left corner of the display the carrier modulation is dynamically displayed. It corresponds to the side tone which is not available on gliders when no earphones are in use.In order to avoid the blocking of the frequency by unintentional long transmissions (stuck microphone) the transmitter is switched off after two minutes and the display changes from „TX“ to „Te“. To resume transmission the PPT switch first must be released and then be pressed again.While transition the external audio input will be turned off.The microphone selection is dependant from the pre-setting at the TXm-activation. The differential speaker output will be turned off to prevent an audio feedback to the microphone. The speaker also will be disabled if the intercom (VOX) is active.The output for the head set will carry the side tone.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0026 of 52
3.7. Self test monitorThere is a permanent back ground test system active.The field for battery status & error (see Control Elements Overview) is used to indicate warnings and in case of hardware failure, different error reports.The warnings are:BAT low battery voltage (becomes active < 10,5V)At transmissionA-match bad antenna match or antenna defective.Also while transmission the TX-flag (left top) can change to Te Transmission time has exceed (> 2 minutes)All other reports starting with Er…. Indicating a major hardware failure and consequently the radio has to be returned to factory. 3.7.1.Optical side toneEspecially on glider use, where no headset to get the side tone, it is very helpful to see the microphone working.At left lower side, there is a modulation indicator showing the talking activity. At no modulation it becomes a small dot approximately in the centre. Also it indicates a bad antenna matching by getting far out of the centre.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0027 of 52
3.8. Resetting to factory settingsReturning to the factory settings can only be initiated during power-up.During power-up the MEMORY and DUAL buttons must be pressed simultaneously and the display will show “SET DEFAULTS”. When the buttons are released the resetting to the factory settings takes place. When resetting is completed “DONE” is displayed.Resetting tot he factory settings will not change any data in the favourite list memory.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0028 of 52
3.9. SET UP - MenuDuring power-up the MEMORY buttons must be pressed There are two functions within the Set-up menu:• ERASE – Erasing of the favourites (frequency and designator)• Channel Spacing – 25kHz / 8,33kHzProgramming of the Set-up is done with the lower 3 buttons. Their function is described on the display.MEMORY FREQSet-up program exit is with the MEMORY button. The unit remains powered and the normal operating mode is resumed.Remark: = 3.9.1.ERASE – Erasing the Favourites ListWhen in the SET UP – Menu select the “ERASE“ submenu with the .MEMORY FREQErasing the favourites (frequency and designator) starts after the button was pressed again. This procedure may last a few minutes during which time “ERASING“ is displayed.All INFO frequencies and designators that were stored on delivery are User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0029 of 52
lost and all favourite index positions (01 to 99) are available to the user. 3.9.2.Channel SpacingWhen in the SET UP – Menu pressing the MEMORY button will change into the Channel Space submenu. MEMORY FREQThe desired channel spacing then can be selected and the (X) indicates the actual channel spacing.4.Remote Control Tandem-seat airplanes can be equipped with the KRT2RC Remote Control Unit. The remote control unit is connected to RS232 serial interface and enables selection of the most common settings like frequency, volume, squelch, VOX, display contrast and brightness. In addition the unit has an independent memory for favourites (frequency and designator). Transmission error messages are displayed in the error window in the third lineR_Time = Time-out transmission errorR_ChkS = Checksum errorR_Cmd = Unknown commandR_Char = Data errorR_Freq = Wrong FrequencyThe error message disappears when a valid command or a new frequency has been input, latest however after 5 seconds.Remote control unit errors do not interfere with the KRT2 transceiver operation.Data transmissions between the transceiver KRT2 and the remote control unit is checked once every minute. A “r” in the upper right corner is User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0030 of 52
displayed when there is no malfunction.5.Installation5.1. Installation HintsThe following hints should be considered for installation.A certified maintenance shop should perform the wiring. For the wiring diagram refer to chapter 5.7.3 5.2. Telecommunication DataThe following data may be required for the radio station licence.ManufacturerAIRplus Maintenance GmbHTypeKRT2EASA NumberP/N 100-90001-00Power Output6 WFrequency:118,000 – 136,975 MHzEmission Designator:6k00A3E für 25khz channel spacing5k00A3E für 8,33kHz channel spacing5.3. Scope of deliveryPart NumberDescriptionKRT2KRT2 - VHF TransceiverZUB2 (3 pcs)Mounting screw KRT2 - for panels up to 3mmSSKRT2Connector(when no cable set was ordered)……………………Operation and Installation ManualEASA Form 1User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0031 of 52
5.4. Unpacking and Inspecting the EquipmentCarefully unpack the equipment. Damages due to transportation must immediately be reported to the shipping company. Save the shipping container and all packing material to substantiate your claim. For storage or reshipment the original packing material should be used..5.5. Mounting• In cooperation with the maintenance shop, mounting details are specified. The maintenance shop can manufacture and install all cables that may be required.. • Avoid installing the unit in the vicinity of heat sources. Sufficient air-circulation is required.• There must be sufficient space for cables and connectors.• Avoid sharp bends and wiring close to control cables.• Cable length must be such that connectors are accessible for repair. • The wiring to the transceiver must be installed such that water droplets formed by condensation will not run into the connector.• Remove the turning knob in order to install the transceiver:o Remove the turning knob cap with an appropriate tool.o Loosen the screw and remove the turning knob.o Install cap correctly oriented!• Installation is from the front side of the instrument panel with three 4mm screws in a 57mm panel cut-out.• For installation details and drawings refer to chapter 5.7User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0032 of 52
5.6. Electrical ConnectionsThe 15-pin D-Sub connector contains all electrical connections except the antenna.The battery plus connection must be protected with a 4amps slow blow fuse !5.6.1.Microphone-ConnectionBoth the L (left) and R (right) microphone input channels can either be connected to standard microphones (standard signal level 1Vpp) or to dynamic microphones (standard signal level 5mV to 10mV).For standard microphones a supply voltage of 8V at 330Ω is provided.Elementary Electret microphones can also be connected. They have considerably lower signal levels and therefore require an 8V supply voltage.The microphone input channel amplifier gain can be selected via the the MIC-Setup menu 3.4.10.When dynamic microphones are used in gliders the 8V supply voltage is switched off for power saving purposes.Standard microphones normally used in headsets together with dynamic microphones generally can not be used at the same time.Motor gliders should have a toggle switch installed to differentiate between motor less flight with dynamic microphones and powered flight with headsets.When the AUTO mode is selected in the MIC-Setup menu the KRT2 automatically recognizes to which microphone type has been switched and acts accordingly.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0033 of 52
Because the 8V supply voltage is switched off when dynamic microphones are used during glider flight the second (copilot) headset microphone is disabled.A maximum of two microphones of same type may be connected to each microphone input channel.5.6.2.Earphone ConnectionSeveral earphones of same type can be connected in parallel. The total impedance should not be less than 60 Ohms. 5.6.3.External Audio InputAudio alarms or even music can be made available via the external audio input. When this input is not used it must be connected to ground in order to avoid noise. PIN5 must be connected to Battery minus (GND).User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0034 of 52
5.7. Finally Audio-SetupThis is an overview for a correct audio set up depending on the usage.5.7.1.For glidersPress button AUD 3x for VOX: Set to VOX 10 (turn off).Press button AUD 4x for TXm: Set to TXm**.Press button AUD 6x for EXT: Set to EXT 00 (turn off).Press button AUD 10x for EXT: Set to MIC-Level 11.5.7.2.For motor gliders For change mode (motoring & headset – gliding & dynamic microphone)Press button AUD 3x for VOX: Set to VOX 3.on condition at motoring.Press button AUD 4x for TXm: Set to TXm**.Press button AUD 6x for EXT: Set to EXT 00 (turn off), or on condition.Press button AUD 10x for EXT: Set to MIC-Level 5,select AUTO5.7.3.Für Motor planes Press button AUD 3x for VOX: Set to VOX 3 (turn off).Press button AUD 4x for TXm: Set to TXm**, or on condition.Press button AUD 6x for EXT: Set to EXT 00 (turn off), or on condition.Press button AUD 10x for EXT: Set to MIC-Level 3, or on condition.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0035 of 52
5.8. Wiring5.8.1.Wire GaugesSupply lines (Power, GND): AWG18 (0,96 mm²) Control lines: AWG22 (0,38 mm²)All wires must be aviation certified.5.8.2.Connector Pin-ConfigurationUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0036 of 52
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5.8.3.Wiring Diagram User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0038 of 52
User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0039 of 52
5.8.4.Connection supportIn order to connect shields of all cables at a single point and to avoid ground loops an adapter board as shown is recommended. The adapter board is placed between the connector pin rows and soldered to the BAT plus pins 8,15 and GND pins 1,9. Further information printed on the board serves to connect all cables to its corresponding pins. User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0040 of 52
5.9. Antenna5.9.1.Antenna Selection• A 50 Ohms impedance VHF-COM-antenna is required.• The antenna must be approved in respect to aircraft type and installation location.• The antenna specifications can only be fulfilled when properly installed 5.9.2.Installation Recommendation• The manufactures instructions have to be observed.• The metallic contact between airplane surface and antenna ground must be very good. Non-metallic airplanes must have installed a metal sheet, foil or mesh of at least 80×80 cm inside the fuselage as electric counterweight.. • In order to avoid interference the distance between a COM an NAV antenna or between a COM and another COM antenna should be as large as possible. A distance of 2 meters normally is sufficient.• The antenna must vertically be installed as far as possible away from parts like propeller, landing-gear, rudder etc., that may influence propagation of the radio signals.• In gliders the internal antenna provided by the airplane manufacturer is to be used.The RF-antenna cable may not be part of other cable sets like power-supply or microphone. It must not be placed together with any other COM, NAV or transponder antenna cable. User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0041 of 52
5.10. Microphone generalThe correct setting of the MIC and VOX values is of great importance for Intercom system (see 3.4.3. VOX Intercom Voice Trigger Level and 3.4.10. MIC Setup).The VOX intercom voice trigger level must be set to such a value that the intercom system is activated when speaking at a normal voice level into the microphone. It shall not be triggered by normal cockpit noise. When there is extreme cockpit noise or there are uncompensated microphones VOX can be deactivated with VOX=01 to enable manual intercom operation.The manual intercom operation is activated with one or two separate, parallel connected, optional intercom switches. These switches are not the PTT switches. The intercom switches connect pin12 (intercom) with GND (pin1and9).An “e” will be indicated if pin12 is not on GND.Communication with the VOX system requires pin 12 to be connected to GND by means of one or two intercom switches.The KRT2 unit transmits only when a PTT switch is pressed.Cockpit noise suppression is only possible with differential microphones used in modern headsets. Normal Electret microphones are not suitable.5.11. Post-Installation Check A certified maintenance shop must verify the proper operation of the VHF transceiver.A complete check of all airplane systems is required to certify that the new wiring is not causing any malfunction.The standing wave ratio must be less than 3:1.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0042 of 52
A test flight is recommended to verify proper transceiver operation.The following items should be checked:• Check transceiver operation with a radio station at least 50 km away when at 2000ft or above.• Check if there is unusual electrical interference or noise.• If possible check the transceiver operation on low and high frequencies of the VHF frequency band.5.12. Starting UpSwitch the unit on with the ON button.The following display will appear: The start display shows device type and the software number. It then changes into the normal operating mode (Direct Input).5.13. AccessoriesSuitable accessories like antennas, cable sets, and switches can be purchased at our online shop on www.AIRplus- avionics.com.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0043 of 52
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5.14. Drawings5.14.1.DimensionsUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0045 of 52
5.14.2.Installation DirectionsConnection Area Panel Cut-outUser & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0046 of 52
6.ANNEX6.1. Frequency / Channel- scheduleThe following table contains the operating and displayed frequencies between 118.000 and... 118.100 MHz. The table can be continued up to 136.975 MHz following the same principle.Operatingfrequency(MHz)CannelSpacing(kHz)Displayedchannel8.33/25 kHz ModeDisplayedChannel25 kHz Mode118.000025118.000118.000118.00008.33118.005118.00838.33118.010118.01668.33118.015118.025025118.025118.020118.02508.33118.030118.03338.33118.035118.04168.33118.040118.050025118.050118.050118.05008.33118.055118.05838.33118.060118.06668.33118.065118.075025118.075118.070118.07508.33118.080118.08338.33118.085118.09168.33118.090118.100025118.100118.100118.10008.33118.105etc.etc.etc.etc.User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0047 of 52
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6.2. Technical DataGENERALCompliance StandardsETSO-2C169a, ED-23B Class 4ED-23B Class CTSO-C169a,Class 6TSO-C169a, Class H1 & H2StandardsEUROCAE ED-23BRTCA DO-160ERTCA DO-178B Software Level DDimensionsHeight: 65 mm Width: 65 mm Depth: 144mm plus rear panel plugs 60mmWeight0.36 kg Mountingpanel mounting, cut-out Ø 57 mmTemperature RangesOperation-20 °C to +55 °CStorage-55 °C to +85 °CMaximum Height35000 ftVibrationDO-160E, Cat. S, Vibration Curve MHumidityRTCA DO-160E, Cat. AShock6 G operation20 G crash safetyRTCA DO-160F ENV. CAT.[C1Z]CAA[SM]XXXXXXZBAAA[YY]M[B3F3]XXAPower Supply9 VDC to 33VDC test @ 12VDC•Transmitter: 2.0 A (typ.)•Receiver: 0.1 A•Illumination 0.02A•Audio Power amp. Up to 1Aemergency operation: 9 VDCPower ConsumptionStandby 1W, Transmit 30 WFrequency Range118.000 .. 136.995 MHz User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0049 of 52
Frequency Stability±5 ppmFuseexternal fuse required: 4 A, slow-blowCompass Safe Distance30 cmTRANSMITTERPOWER OUTPUT6 W (nominal) 4 W (minimal)HARMONIC DISTORTION<10 % at 70 % modulationSIDETONE OUTPUT>0,5W an 300Ω (head set output)MICROPHONE INPUTS2 x standard (50mV…2V) into 100Ωor 2 x dynamicHARMONIC CONTENT>60dBcMODULATION FIDELITYdeviation <6 dB von 350…2500HzCARRIER NOISE LEVEL>35dB at 70% Modulation indexUNWANTED FREQUENCY MODULATION<1kHz at m=70% / 1kHzDUTY CYCLE2 minutes on, 4 minutes off;automatic turn-off after 2 minutes continuous transmitter operationRECEIVERSENSITIVITY-105 dBm (>6 dB S+N/N, m = 30 % / 1 kHz)BANDWIDTH / 25 KHZ-6-dB-bandwidth > ±8.0 kHzBANDWIDTH / 8.33 KHZ-6-dB-bandwidth > ±2.78 kHzSELECTIVITY(channel spacing 25 KHZ)-40-dB-bandwidth < ±17.0 kHz-60-dB-bandwidth < ±22.0 kHzSELECTIVITY(channel spacing 8.33 KHZ)-60-dB-bandwidth < ±7.37 kHzSPEAKER OUTPUT≥4 W into 4 Ω AGC CHARACTERISTICDeviation des NF-output< 6 dBfrom 10 µV to 10 mVSQUELCH Automatic Squelch (adjustable)User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0050 of 52
SPURIOUS RESPONSES> 80 dBDISTORTION (350…2500Hz)<25% at rated power (85% / -33dBm)<10% at 10dB below rated power(70% / -33dBm)User & Installation manualVHF- Communication TransceiverDoc.-Nr:DE-3000-800100eKRT2 & KRT 2ARevision 5.0Software >5.0051 of 52
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