Microair Transponder Notes
Contents
1. A The T2000SFL has a number of large capacitors fitted and at the moment of turn on they will try to charge up When this happens an in rush of current occurs If the power supply cannot cope with this in rush the supply voltage will dip to the point where the T2000SFL will detect a power failure and reboot The answer is to connect a battery across the power supply to cushion the in rush and allow the T2000SFL to get past this point Prolonged operation with T2000SFL in reboot may result in NO COMM error on the display If this message appears the communications between the microprocessor has been disturbed and will require factory service Are there any problems with altitude encoders to be aware of The T2000SFL is designed to work with ANY TSO C88a approved encoder The T2000SFL has the provision to supply the aircraft power to the encoder There a several things to watch for here Firstly the voltage received by the T2000SFL will be the voltage out to the encoder Be careful with 28V aircraft that you select an encoder which 15 rated to 28V Secondly it is very important to wire a connecting ground wire between the encoder and the T2000SFL even if you are NOT taking the power from the T2000SFL This will ensure that the data line signals are at best performance Thirdly NEVER allow the output voltage from the T2000SFL to the encoder to be shorted This will always result in internal damage to the T2000SFL2. The T2000SFL has option of a remote ID switch pin 16 a O T2000SFL The external switch should be a momentary ON type The switch or ID key only need to be pressed briefly to activate the dent function Ident Key I character replaces the R while the IDENT function is in operation T2000SFL User Manual 01R7 3 doc Page 18 of 2 Microair Avionics T2000SFL Transponder User Manual 4 0 INITIALISATION AND SETUP The T2000SFL will operate as a conventional transponder when first installed and powered up You will be able to turn the transponder ON OFF adjust the standby code and transfer the standby and active codes The T2000SFL has many other features which can be programmed Microair recommends that the full setup procedure be carried out prior to first flight This section provides detailed procedures on the various parameters and functions that can be setup from the front panel The following procedures provide step by step instructions to program the transponder options PROGRAM MODE VOLT MON E C POW VFR CODE BARO REM STBY EXIT PROGRAM 4 1 PROGRAM MODE To start the TZ2000SFL in PROGRAM MODE hold down the MODE key and then press the ON key Keep the MODE key held Soo down until the start up self test messsages have been displayed Each item can be adjusted to the desired value or option by scrolling T2000SFL the CODE ADJUST knob The selected value or option can be saved b
3. All of the keys are covered in a soft rubberized plastic which is backlight with the display When the key is pressed a small click can be discerned The selected function will operate on the release of the key 1 2 TURNING ON The T2000SFL is turned on by pressing the ON key The T2000SFL MICROAIR will go through a start up routine displaying self test messages 44 including the display of transponder s serial number backlight Sa test and ending with the operational display A T2000SFL ON KEY 13 TURNING OFF To turn off press the ON key again and the unit will immediately turn off T2000SFL User Manual 01R7 3 doc Page 5 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 14 DISPLAY LAYOUT The Microair T2000SFL 15 a 57mm diameter face version to fit standard 2 inch instrument hole eign 20005 1 The mounting is by 4 x M4 machine screws located through the panel and screwed into threaded holes in each corner of the transponder s front face Clean only with a dry cloth and do not allow the display face to become wet CODE SELECT The mode of operation is set using the SELECT MODE RU ALT E knob located at the lower left and the standby code gt displayed on the lower line of the display can be edited J with the CODE SELECT knob located at the lower right T2000SFL Front Face 1 5
4. Microair Avionics Microair Avionics Pty Ltd Airport Drive Bundaberg Queensland 4670 Australia VICROAIR 61741 553048 Fax 61 7 41 553049 e mail sales microair com au Microair Avionics T2000SFL Transponder User Manual About This Document Microair Avionics has developed a series of transponders for use with OEM applications and for commercial sale by Microair Avionics The manual explains the basic functions and elaborates on the more sophisticated features such as altitude display and alerts Revision 01R6 of this manual is to be supplied and used in conjunction with T2000SFL 01 7 transponders with software version 01R1 6 5 Microair reserves the right to amend this manual as required to reflect any enhancements or upgrades to the T2000SFL transponder series MIGROAIR Statement The T2000SFL owner accepts all responsibility for obtaining the proper licensing before using the transponder The coverage you can expect from the T2000SFL is limited to line of sight Low altitude or aircraft antenna shielding by the aircraft itself may result in a reduced range Range can be improved by climbing to a higher altitude It may be possible to minimize antenna shielding by locating the antenna where dead spots are only noticed during abnormal flight attitudes Microair Avionics Pty Ltd The T2000SFL should be turned off before starting or shutting down aircraft engine s
5. Mobile phones must not be turned on during the operation of the T2000SFL ks 34 ON out CODE SELECT SALT DISPLAY Change a 11 02 01 Initial Draft 11 07 01 Voltage Monitoring i Hardware and software revision references amended Oust aaa Mobile phone to be turned off references Display graphics updated 07 11 01 Deleted SF references I T2000SFL User Manual 01R7 3 doc Page 2 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual TABLE OF CONTENTS LO INTRODUCTION 4 1 1 TZ000SF LEON TROELS 5 1 2 TURNIN ON urice oreet succeeds E E E OA 5 1 3 TURNINCOF P O E RO 5 1 4 E 6 1 5 ale Meee ney mene er mr ne eg er er MERIT On an he ternary MERE mea ten ere rere eee 6 20 DISPLAY FUNCTION E E 7 30 CONTROL DUNC PIONS 8 3 1 SECECFMODE KNOB 8 CODES EE CD RING 9 3 3 ONERE Ma oae a ee eanteten 9 3 4 MODE KE rempremarie 10 3 4 1 ONIFOR BARO BAROMETRIC PRESSURE O A EA atlas 11 3 4 2 ASSIGNED ALTITUDE A AA 12 3 4 3 BUFFERAL T eeren thc ieee oes sh at EEE ROTERE ETET 13 3 4 4 PM TOTO UNITS ae 14 3 4 5 MOL TAT TE S AA E E NENE E Ae 15 3 4 6 A T A AA S 15 3 4 7 ALERT TONE EEE a
6. On the active display line the letter C appears on the left hand side ALT DISPLAY The standby code is replaced with the encoder altitude If the pressure has been set via the QNH Baro option of MODE MENU the displayed altitude will be adjusted for barometric air pressure Altitude will be displayed in units set in ALTITUDE option of MODE MENU The DISPLAY ALT only displays altitude if a valid encoder input is being received When climbing above the transition level layer the user must reset the transponder at the same time as the aircraft s altimeter to 1013mb or 29 92HG On the active display line the letter C appears on the left hand side Encoder altitude for pressure altitude Adjusted encoder altitude for local 1013mB or 29 92HG BARO setting T2000SFL User Manual 01R7 3 doc Page 8 of 28 5 February 2010 Microair Avionics T2000SFL Transponder 3 2 CODE SELECT KNOB The CODE SELECT knob can be rotated clockwise to scroll upwards and counter clockwise to scroll downwards Each digit of the code is adjusted separately The adjust function starts with the left hand digit and is moved across to the next digit by pushing the CODE SELECT knob inwards After 10 seconds of inactivity the cursor will revert to the left hand digit When operating in the Display Alt mode the actual Gillham 4 digit altitude code can be displayed by pressing and holding the code select knob in 3 3 ON KEY The T2000SFL i
7. Q Altitude is adjusted for QNH or barometric pressure from the mode menu N If the Encoder is not powered or not fitted the message NO ALT will appear on the display The T2000SFL will transmit the encoder altitude pressure altitude only in accordance with normal mode C operation The adjusted QNH Baro altitude is never transmitted T2000SFL User Manual 01R7 3 doc Page 7 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 3 0 CONTROL FUNCTIONS This section describes the transponder control keys and their functions Many of the control keys have more than one function and some keys access multi option menus which can be scrolled 3 1 SELECT MODE KNOB The SELECT MODE knob allows the user to switch the transponder STNBY e s ALT CODE SELECT between the 4 operating modes ALT DISPLAY Select Mode Knob STANDBY In standby the transponder is powered up but will not transmit On the active display line the letter X appears on the left hand side ON Will reply to Mode A interrogations Mode C blind encoder is normally powered up in this mode but can be powered down if encoder power option is set OFF refer E C POW in Initialisation and Setup section On the active display line the letter A appears on the left hand side Will reply to Mode A and C interrogations with the mode C encoder information In the absence of a valid encoder input only the C framing pulse will be sent
8. Special Codes There are several special codes which are used to identify General Aviation aircraft and some special situations which aircraft could encounter Misuse of these codes may result in legal charges against the user A 6 IMPORTANT NOTE ALWAYS check the standby code BEFORE transferring it to the ACTIVE position 0000 General Purpose code subject to regional agreement 1200 Civil VFR Flights OCTA not participating in Radar Information Service RIS General Aviation Code US and other countries 2000 Civil IFR Fights OCTA not participating in RIS 3000 Civil Flights in Controlled airspace 7000 VFR General Aviation Code Europe 7500 Unlawful Interference Code 7600 Radio Communications Failure 7700 Emergency Code 7777 Military Intercept Code NEVER USE Code 2100 is a test code that can be used by qualified personal to test the transponder to ATC The user should check the Civil Aviation Rules Regulations to determine the VFR General Aviation transponder code for their country T2000SFL User Manual 01R7 3 doc Page 6 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 2 0 DISPLAY FUNCTION The T2000SFL is a dual line display of 8 characters each with the active code on the top line and the standby code on the bottom With the SELECTMODE knob set to either the ON or ALT positions the active code is displayed on the top line and the standby code is displayed on the bottom line In the top lef
9. and is NOT covered by the warranty Do NOT do this Q When I set the QNH or Baro to the current pressure the altitude on the display changes Is this the same altitude that I am sending to A No The transponder will always send the pressure altitude received from the altitude encoder without adjustment for QNH or Baro Pressure altitude is referenced to 1013mB or 29 92HG The pressure compensation is done by ATC after they receive your mode C response The displayed altitude will be prefixed with PA for pressure altitude and Q for QNH or Baro adjusted T2000SFL User Manual 01R7 3 doc Page 25 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual Do I need to get my Transponder calibrated Yes In most countries transponder installations regardless of the type of aircraft it is installed in must be calibrated at the time of installation and every two years thereafter The calibration will include the aircraft s altitude encoder and primary altimeter The test must be carried out with the equipment installed in the aircraft by a qualified avionics service centre Is there anything inside the T2000SFL transponder can adjust to get better performance A No Do not open T2000SFL or attempt to adjust any internal components Service should only be carried out by Microair Avionics or a certified avionics service centre which holds the T2000SFL Service Manual Refer to the Microair Avionics websi
10. feet to warn you of the airspace T2000SFL User Manual 01R7 3 doc Page 26 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 6 0 LIMITED WARRANTY The warranty period for any Microair Avionics manufactured article 15 dependant Condition of the article at time of sale and the Purchase Date For New Articles the warranty period commences from Date of Purchase and is valid for 2 years or the minimum period defined by applicable consumer law whichever is the longer iC ROAI R In the absence of original Proof of Purchase the warranty will be valid for 2 years from AVION ICS Date of Factory Shipment as determined by Microair Avionics For Factory Reconditioned Articles offered for sale the warranty period commences from Date of Purchase and is valid for 12 months For Factory Exchanged Articles the warranty period commences from the Date of Purchase of the original article and is valid for the remainder of the original warranty period For Repaired Articles the warranty period commences from the date of Factory Shipment and is valid for 6 months for the original defect only Microair Avionics will at its sole discretion repair or replace any components which fail in normal use Such repairs or replacement will be made at no charge to the customer for parts or labour The customer shall be responsible for any transportation costs for return of this product to Microair Pty Ltd or an approved Micro
11. the pilot that the aircraft is 500 feet below the Assigned altitude If the Alert Tone function is set on an audio warning tone 15 heard T2000SFL User Manual 01R7 3 doc Page 13 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 3 4 4 ALTITUDE UNITS The altitude data can be displayed as feet flight level or meters Once the Altitude units are set all altitude data is displayed in these units The options are FEET e g 15000F M METERS e g 5000 M Press MODE key 4 times To select Altitude option Rotate CODE SELECT knob Scroll to select desired units Options are Feet or Meters Press ENTER key No operation No default value Press Toggle key Display returns to current operational display In both examples below the PA characters displayed at the lower left indicate pressure altitude where the QNH BARO value has been left at the default value 1013mB or 29 92HG in the MODE menu 5300 FEET Units in feet are indicated by the F character at the right hand end of the lower display line All altitude data will be displayed in feet at the right hand end of the lower display line All altitude data will be displayed in meters HHHH 1250 METERS Units in meters are indicated by the M character T2000SFL User Manual 01R7 3 doc Page 14 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 3 4 5 VOLTAGE The VOLTAGE function will display the aircraft s supply
12. 010 Microair Avionics T2000SFL Transponder User Manual 3 4 2 ASSIGNED ALTITUDE The user can input an assigned altitude given by ATC When used with the altitude buffer value an audio alert and display indicator advises when the aircraft has climbed or descended from the assigned altitude When the Altitude option of the mode menu is set to Feet the Assigned altitude is adjusted in feet HHH When the Altitude option of the mode menu is set to Meters the Assigned altitude is adjusted in Meters Press MODE key 2 times To select Assigned option Press CODE SELECT knob Increment displayed value in units of 500 feet 100m Rotate CODE SELECT knob Increment displayed value in units of 100 feet 10m Press ENTER key To set default value The default is 0 Press toggle key To save and display returns to current operational display When entering an altitude Press the CODE SELECT knob to increase the height value in units of SOOFT 100M value in units of LOOFT 10M HHH Rotate the CODE SELECT knob to increase or decrease the height Press the ENTER key to return the ASSIGNED ALTITUDE to the default value of 0 or Press the Toggle key to save the height value and return to the operational display If Assigned is set to 0 the altitude alert function is disabled The assigned altitude function is only active when the SELECTMODE knob is set to DISP ALT T2000SFL User Manual 01R7 3 doc Page 12 of 28 5 February 2010 Mic
13. International Return instructions are available on our website Please follow these instructions carefully Phone 61 7 4155 3048 617 4155 3049 Email repair microair com au Website Wwww microair com au Limited Warranty Statement 01R3 T2000SFL User Manual 01R7 3 doc Page 27 of 28 5 February 2010 Supplied by
14. air Service Centre This warranty does not cover failures due to abuse misuse accident unauthorised alteration or repairs carried out by parties other than Microair Avionics or an approved Microair Avionics Service Centre This warranty does not cover failures where the product has not been installed or operated in accordance with the provisions of the User and Installation manual s It shall be at Microair Avionics sole discretion to decide if a defect is a result of material or workmanship failure THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY LIABILITY ARISING UNDER WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUARY OR OTHERWISE THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE AND COUNTRY TO COUNTRY IN NO EVENT SHALL MICROAIR AVIONICS PTY LTD BE LIABLE FOR ANY INCIDENTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT Microair Avionics may at it discretion refer product returns for repair or service to a service facility closest to you Microair Avionics reserves the right to repair or replace the product or software or offer a full refund of the purchase price at its sole discretion To obtain warranty service please email or call the Microair Avionics Repair line in Australia Domestic or
15. cl ected Sc EE E T 16 3 5 ENTER 17 3 6 TOGGLE RE Y noron 17 3 7 css ana adits 18 3 8 ee 18 4 0 INETFIALISA 19 4 1 PROGRAM MODE 19 4 1 1 VOLT M ON 20 4 1 2 amas 20 4 1 3 21 4 1 4 21 4 1 5 RENS TEY 22 4 1 6 M a 22 5 0 FREQUENTLY ASKED QUESTIONS ccccccccscssssssssssscccccsccesssssceees 23 60 LIMITED WARRANTY 27 T2000SFL User Manual 01R7 3 doc Page 3 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 10 INTRODUCTION The Microair T2000SFL Transponder is designed to operate in the environment of a Radar Beacon System This system interrogates the transponder which in turn replies with an identity code and altitude information The radar system consists of a network of ground stations which sweep the horizon like a conventional radar When the transponder in the aircraft detects the radar sweep is illuminated the transponder replies with a burst transmission giving its identity code and altitude The aircrafts transponder receives the ground station signal asking it to transmit The transponder replies wi
16. e and void the warranty refer to Installation Manual T2000SFL User Manual 01R7 3 doc Page 20 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 4 1 3 VFR CODE This item sets the default VFR code which can be hot key accessed from the V VFR key For most countries the default general aviation code is 1200 We recommend that this code be used The display moves to BARO menu item 4 1 4 BARO This item sets the barometric pressure units used by the T2000SFL The user can select from MB millibars or HG inches Mercury We recommend that the user selects the same units as those used in the sub scale of the aircraft s altimeter T2000SFL User Manual 01R7 3 doc Page 21 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 4 1 5 REM STBY For aircraft using the remote standby line pin 15 the operation of the switch can be changed by the T2000SFL software The remote switch holds the T2000SFL in standby S regardless of what position the SELECTMODE knob is in If the remote switch releases the T2000SFL from standby by closing the operation is NORM normal If the remote switch releases the T2000SFL from standby by opening the operation is REV reverse Press ENTER key Until Rem Stby message appears Rotate CODE SELECT knob Set Rem Stby Norm Rev default is Norm Press ENTER key The message SAVED appears briefly on the display The display mo
17. ing The external standby can be wired as a stick mounted switch Be aware of this switch when flying as the T2000SFL will operate outside standby until the switch is operated Check the Rem Stdby function in the PROGRAM MODE menu to ensure the switch is operating the correct way Q I have noticed that sometimes when I switch on the Avionics Master the T2000SFL turns on by itself without pressing the ON key Why A The T2000SFL s ON key is software controlled The T2000SFL will remember if it was on or off at the time the avionics master was lasted switched off When the power is turned on again the T2000SFL will revert to its last operational condition and turn on The T2000SFL be turned ON OFF via avionics master or the ON key either method is OK Q Whilst flying outside normal radar coverage have noticed that the reply symbol still flashes from time to time what causes this s A 0 Other aircraft fitted with TCAS systems can still interrogate transponder equipped aircraft like yours This then lets them know where you are and your contact information is displayed on their TCAS screens The TCAS aircraft could be 100 miles away and at altitudes 30 000ft T2000SFL User Manual 01R7 3 doc Page 24 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual Q I have tried to power up my T2000SFL on the bench from a dc power supply but it won t start up properly What is going on
18. o normal operation Q When asked to go to mode C from mode A the altitude does not appear on the ground station for some time usually after 8 minutes is this normal A Yes if the encoder has the option for mode only power on see setup then when in mode A it will have no power applied to it in mode the power is applied for the first time Some encoders have a warm up period of up to 10 minutes and the encoder information will be missing for this period One way to overcome this is to have the encoder power on selected to ALL in the options setup This means that as soon as the unit is turned on the encoder will be running For power conservation Gliders etc we recommend power on mode C only T2000SFL User Manual 01R7 3 doc Page 23 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual Q I have turned the SELECTMODE knob to ALT to select mode but when I am taxiing an X standby appears instead of C What is going on A The unit has probably had the external standby switch wired to an air switch When the aircraft lands and slows down the airflow over the switch is unable to hold back the spring operation of the air switch The T2000SFL will switch from the operating mode from the SELECTMODE knob to standby and the X appears on the display When the aircraft takes off again the airflow increases and operates the external standby switch and the T2000SFL reverts back to SELECTMODE sett
19. ransponder User Manual 3 4 7 ALERT TONE The Alert Tone function is used by T2000SFL s altitude alert function When set ON the Alert can be heard through the headphones when connected to the headphone circuit Press MODE key 7 times To select Alert Tone option Rotate CODE SELECT knob Scroll lower line to select ON or OFF The default is ON Press ENTER key No operation No default value Press Toggle key Display returns to current operational display AI IMPORTANT NOTE Ri Pressing the MODE key again returns the display to the operational screen The user can press the toggle key at any point in the MODE menu to return to the operational screen A v T2000SFL User Manual 01R7 3 doc Page 16 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 3 5 ENTER KEY The ENTER key is a confirmation key used to confirm information the user has inputted After pressing the ENTER MICROAIR key the display will typically give the message SAVED for a short period gt The ENTER key is also used to quick set a parameter to gt PZ000SFL default value Enter Key 3 6 TOGGLE KEY This key acts as a toggle switch exchanging the active and standby codes Toggle Key When the transponder is operating in DISPLAY ALT the bottom line displays the encoder altitude instead of the standby code The standby code is stored in memory To toggle the active and standby codes in thi
20. roair Avionics T2000SFL Transponder User Manual 3 4 3 BUFFER ALT The user can input a buffer altitude above and below the assigned altitude to define a height band in which to fly When the aircraft exceeds the upper or lower limit an indicator alert message will be displayed The alert message advises the pilot of how far above or below the assigned altitude the aircraft is If the Alert Tone function is ON an audio tone is heard as well If the ALTITUDE option in the PROGRAM MODE is set to FEET the Buffer Alt increments are in feet If ALTITUDE is set to METRES the Buffer Alt increments are in meters To select Buffer Alt option Increment displayed value in units of 500 feet 100m Increment displayed value in units of 100 feet 10m Display returns to current operational display No default value Display returns to current operational display ALTITUDE BUFFER ALTITUDE BUFFER With the Assigned altitude set at 3500 feet and the Buffer Alt set at 200 feet the display alerts will occur over 3700 feet and under 3300 feet ASSIGNED ALTITUDE No alert will be displayed while the aircraft remains inside the 3700 3300 buffer If the aircraft climbs or descends outside the altitude buffer limits a Hi Lo warning is displayed on the lower line T2000SFL advises the pilot that the aircraft 1s 500 feet above the Assigned altitude If the Alert Tone function is set on an audio warning tone 15 heard T2000SFL advises
21. s USE THE Toggle KEY TO RETURN TO Mert Tone THE OPERATIONAL DISPLAY T2000SFL User Manual 01R7 3 doc Page 10 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 3 4 1 QNH OR BARO BAROMETRIC PRESSURE The altitude encoder outputs a pressure altitude fixed at an above mean sea level AMSL pressure of 1013mb 29 92 The aircraft s altimeter however is normally adjusted for actual surface pressure before take off This means the encoder altitude may not be the same as the altimeter reading The QNH can be entered here to allow the T2000SFL to compensate the displayed altitude for surface pressure and hence read the same as the aircraft s altimeter The default QNH is 1013mb or Baro is 29 92HG If the QNH Baro is set to 1013mb or 29 92HG the altitude displayed will default to the unadjusted pressure altitude direct from the encoder If the QNH Baro is set to a discrete value normally provided by ATC the encoder pressure altitude displayed will be adjusted for that QNH Baro value The barometric units are set in the BARO option of the PROGRAM MODE When MB is selected the QNH screen 15 displayed and when HG is selected the Baro screen is displayed IMPORTANT NOTE The T2000SFL will only transmit the encoder pressure altitude The adjusted ONH Baro altitude is NEVER transmitted even when it is selected for display T2000SFL User Manual 01R7 3 doc Page 11 of 28 5 February 2
22. s mode push the toggle key once to display the standby code on the bottom line The standby code is displayed for 10 seconds Push the toggle key again to exchange the active and standby codes Once the codes have been exchanged the display will revert back after 10 seconds to displaying the altitude on the bottom line In all modes of operation only the active code is transmitted The toggle key is also used to return to the operational screen from the MODE and PROGRAM MODE menus T2000SFL User Manual 01R7 3 doc Page 17 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 3 7 VER HOT KEY The VFR key will default the standby code immediately to the stored VFR code Typically this code will be 1200 for a General Aviation aircraft The VFR key calls the value set in the VFR option of the PROGRAM MODE menu To transfer the VFR code to the active position press the toggle key If no code is entered after 10 seconds idle the standby position will revert back to the original VER code To make the VFR code the active code press the toggle key to bring VFR to the top line VFR Key Press VFR key to bring the stored VFR code to the standby line In this case VFR 1200 3 8 ID KEY The ID key Ident when pressed adds additional code information to the transmission for ATC The code will flash on the ATC display agg as a means of uniquely identifying the aircraft s code from any other
23. s turned on by pressing the ON key The T2000SFL will first display the product name then the serial number of the unit a security protection User Manual CODE SELECT ON STNBYe DISPLAY Code Select Knob MICROAIR Th D s T2000SFL On Key The T2000SFL then performs a quick self test before moving on to the operational screen in whatever mode the select mode knob 18 set to T2000SFL User Manual 01R7 3 doc Page 9 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 3 4 MODE KEY The MODE key can be used to access two separate menus MICROAIR Mode Key T2000SFL e If the transponder is turned on by holding down the MODE key and pressing the ON key the T2000SFL will start in PROGRAM MODE The MODE key must be held down until the start up self test messages have been displayed e If the transponder is ON and in normal operation press the MODE key to access the MODE MENU The first item of the MODE MENU is displayed Step through the MODE MENU by pressing the MODE key After the last menu item T2000SFL returns to the operational display currently in use The MODE MENU is designed to allow the operator fast easy access to functions and parameters which may need to be adjusted in flight MODE MENU QNH or Baro USE MODE KEY STEP THROUGH MENU OPTIONS Buffer Alt Altitude OR Voltage Backlit
24. t corner the operational mode character X A or C character is displayed At the top right is the Mode A C annunciator R character which also flashes with every transponder reply transmitted If the ID key is pressed to activate the ident function the R character is replaced with an I character while the ident function is Operating X STANDBY Neither code or altitude are sent Active Code The transmitted ID code I character x EE Squawk Ident operation r M R character flashing A MODE Transmit ON Only ID code sent Mode A C annunciater C MODE Transmit ON ID Code and altitude sent Standby Code Never Transmitted With the SELECT MODE knob in the ALT DISPLAY position the active code is displayed on the top line and the encoder altitude is displayed on the bottom line If the latitude units are set to feet the altitude is followed by the F character If the altitude units are in metres the altitude is followed by the M character If no QNH or BARO value has been entered default 1013mB or 29 92HG the raw encoder output is displayed as pressure altitude and the characters PA appear at the lower left If a QNH BARO value has been set the Q character appears at the lower left PA Pressure Altitude as sent from altitude encoder a F Feet Altitude units are in Feet Displayed Altitude Altitude generated by Encoder and may be adjusted for barometric pressure QNH
25. te for details of a service centre near you or for instruction on how to return your transponder to Microair Avionics Q Occasionally the message NO COMM will appear on the display particularly when I turn the transponder on What does this message mean A No COMM is a loss of communications between microprocessors inside the transponder This can occur if the one of the microprocessors begins a task before the other is ready to respond This can happen if the transponder is turned on with the selectmode knob in the ON ALT or ALT DISPLAY positions It is possible that the transponder may be interrogated and asked to respond before the start up sequence is complete and hence cause a conflict Recycle the transponder s power to clear the error message If the error message recurs often send the transponder to a Microair service centre for adjustment Q I often pass through class airspace but I do not want to stray into the class airspace above Can I use the altitude alert function to warn me if I go above a certain level A Yes You can use the altitude alert function in the following way to give you a too HI alert at a given altitude An example of airspace low limit might be 4500 feet To remain clear of this airspace you must remain below 4500 feet Go to the mode menu and select altitude Set the altitude to 100 feet Move on to the Buffer value and set this to 4400 feet 4500 100 The HI alert message and tone will now occur at 4500
26. th the code and if operating in mode C the encoder altitude Ground stations sweep the sky with a signal which asks the transponder in the aircraft to transmit its code and altitude The system presents the replies from all transponders in range of the ground stations on a single display screen This allows ATC to easily locate identify and see the altitude of all traffic in their airspace A transponder s reply is termed a squawk Hence the current code being used by the transponder is termed the squawk code At times of high airspace activity ATC may wish to uniquely identify an individual aircraft with a request to squawk ident The pilot uses the ident control on the transponder to make the transponder s sguawk on the ATC display flash for a short period The ident control should not be used unless ATC request it ATC will issue a code to an aircraft requesting entry into its controlled airspace This code is normally unique for each aircraft each time that aircraft passes through the airspace The code is 4 digits long and each digit can range from 0 7 T2000SFL User Manual 01R7 3 doc Page 4 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 11 T2000SFL CONTROLS All of the T2000SFL s functions and features can be accessed from the controls on the front face O l 6 o 8 CODE SELECT STNEY ALT ALT lt DISPLAY 6
27. ves to the SEC CODE menu item or if the SEC CODE has been previously set the display moves to EXIT PROGRAM menu item IMPORTANT NOTE If a remote switch is fitted and it becomes faulty the operation of the switch be changed with this feature If the T2000SFL will not change from standby go to PROGRAM MODE and change the Rem Stdby This may release the T2000SFL 4 1 6 EXIT PROGRAM This is the end of the PROGRAM MODE menu The user can exit by pressing the ENTER key The T2000SFL will restart in the operational mode The user can exit the PROGRAM MODE menu at any time from any menu item by pressing the toggle key To re enter the PROGRAM MODE menu the T2000SFL must be turned off and re started using the ON and MODE keys refer PROGRAM MODE section T2000SFL User Manual 01R7 3 doc Page 22 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 5 0 FREQUENTLY ASKED QUESTIONS The following questions are common to most users and may help you understand the operation of the T2000SFL some of these are explained in the user manual but may have been missed the reader Q When I am asked to Squawk Ident ID the I indicator stays on for a long time Why The I or ident character is used to denote that transponder reply now includes ident information to make the return flash on the ATC display The ident will stay on for 18 seconds before returning t
28. voltage and by rotating the CODE SELECT knob display the over and under voltage alert levels Press MODE key 5 times To select Voltage option The supply voltage is display on the lower line Press ENTER key No operation No default value Press Toggle key Display returns to current operational display When the transponder is operating in normal display operation mode the over and under input voltage alert message is displayed on the lower line Aircraft Voltage This parameter is set in PROGRAM MODE as the nominal aircraft voltage The T2000SFL can accept input voltages from 10 33 volts but the voltage monitoring has to be told what the nominal supply voltage is 3 4 6 BACKLITS The T2000SFL display is backlit by a series of LEDS The level of backlight can be selected from three options Backlighting is OFF When the T2000SFL is turned on the backlighting will default to OFF Backlighting is LO When the T2000SFL is turned on the backlighting will default to the LO or 50 level Backlighting is HI When the T2000SFL is turned on the backlighting will default to the HI or 100 level Press MODE key 6 times To select Backlits option The current setting is displayed Rotate CODE SELECT knob To select from OFF LO HI Rotate ENTER key To save backlist level Press Toggle key Display returns to current operational display T2000SFL User Manual 01R7 3 doc Page 15 of 28 5 February 2010 Microair Avionics T2000SFL T
29. y pressing the ENTER key PROGRAM MODE then moves to the next menu item T2000SFL User Manual 01R7 3 doc Page 19 of 28 5 February 2010 Microair Avionics T2000SFL Transponder User Manual 4 1 1 VOLT MON The T2000SFL can monitor aircraft voltage is a legacy item from earlier version of the T2000SFL which feature over and under volt alarms This feature has been removed with the introduction of the 1 6 5 software This function has no effect and may be set ON or OFF P The display moves to A C VOLT menu item 4 1 2 POW This item controls the output volts for an external encoder if required The power supplied for the encoder can be turned OFF when the transponder SELECTMODE knob is in the ON position mode A Power is only supplied when operating in the ALT position mode C This function is provided to save power when operating solely from a battery supply Press ENTER key Until E C POW message appears Rotate CODE SELECT knob Set E C POW The default is All Press ENTER key The message SAVED appears briefly on the display The display moves to VFR CODE menu item ALT Encoder power is on in ALT and DISP ALT modes only ALL Encoder power is on in all modes IMPORTANT NOTE Some encoders can take up to 10 minutes to warm up NO ALT ts displayed until altitude data is received from the encoder Shorting the encoder power supply pins at the rear of the TZ2000SFL will result in internal damag
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