Garmin 0046400 Aviation Transponder User Manual 330Cover

Garmin International Inc Aviation Transponder 330Cover

users manual

ââââGARMIN International, Inc.1200 E. 151st StreetOlathe, KS 66062 USA190-00207-02 Revision 1March 2002GTXTM 330, GTXTM 330DTRANSPONDERINSTALLATIONMANUAL
Page A GTX 330 Installation ManualRev. 1 190-00207-02© Copyright 2002GARMIN Ltd. or its subsidiariesAll Rights ReservedExcept as expressly provided herein, no part of this manual may be reproduced, copied, transmitted,disseminated, downloaded or stored in any storage medium, for any purpose without the express priorwritten consent of GARMIN. GARMIN hereby grants permission to download a single copy of this manualand of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and toprint one copy of this manual or of any revision hereto, provided that such electronic or printed copy of thismanual or revision must contain the complete text of this copyright notice and provided further that anyunauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.Information in this document is subject to change without notice. GARMIN reserves the right to change orimprove its products and to make changes in the content without obligation to notify any person ororganization of such changes or improvements.GARMIN International, Inc.1200 E. 151st StreetOlathe, KS 66062 USATelephone: 913-397-8200Dealer Line: 1-800-800-1420Web Site Address: www.garmin.comINFORMATION SUBJECT TO EXPORT CONTROL LAWSThis document may contain information which is subject to the Export Administration Regulations (“EAR”)issued by the United States Department of Commerce (15 CFR, Chapter VII, Subchapter C) and which maynot be exported, released, or disclosed to foreign nationals inside or outside of the United States withoutfirst obtaining an export license. A violation of the EAR may be subject to a penalty of up to 10 yearsimprisonment and a fine of up to US$1,000,000 under Section 2410 of the Export Administration Act of1979. Include this notice with any reproduced portion of this document.RECORD OF REVISIONSRevision RevisionDateDescription ECO #103/22/00 Preliminary Release -
GTX 330 Installation Manual Page i190-00207-02 Rev 1TABLE OF CONTENTSTo be supplied
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GTX 330 Installation Manual Page 1-1190-00207-02 Rev. 11. GENERAL DESCRIPTION1.1 INTRODUCTIONThis manual describes the physical, mechanical, and electrical characteristics and the installation requirements for theGTX 330 Mode S Transponder and GTX 330D Diversity Mode S Transponder. In this manual, the term GTX 330applies to both transponders unless otherwise stated. Information pertaining to the maintenance, alignment, andprocurement of replacement parts is found in the GTX 330 Maintenance Manual, P/N 190-00207-05. Afterinstallation of the GTX 330, FAA Form 337 must be completed by an appropriately certificated agency to return theaircraft to service.1.2 EQUIPMENT DESCRIPTIONThe Garmin GTX 330 is a panel mounted Mode S Transponder with the addition of timers, altitude reporting, mode Sinterrogation and reply, and multiple transmit/receive ARINC 429 and RS232 data ports. The Mode S transponderhas the capability to transmit a unique address for every aircraft.The GTX 330 is a radio transmitter and receiver that operates on radar frequencies, receiving ground radar or TCASinterrogations at 1030 MHz and transmitting a coded response of pulses to ground-based radar on a frequency of1090 MHz. The GTX 330 is equipped with IDENT capability that activates the Special Position Identification (SPI)pulse for 18 seconds.As with other Mode A/Mode C transponders, the GTX 330 replies with any one of 4,096 codes, which differ in theposition and number of pulses transmitted. By replying to ground transmissions or TCAS interrogations, theGTX 330 enables ATC to display aircraft identification, altitude and ground speed as well as identification numberson ATC radar screens or TCAS traffic indicators.The GTX 330 is configured with all key controls. The layout of the front panel keys and displays segregates thetransponder’s primary functions from the secondary functions. The unit can be configured so the aircraft avionicsmaster bus can turn the unit on.1.3 INTERFACE SUMMARYThe GTX 330 provides the following interface connections via the rear connector:• Ten (10) encoding altimeter inputs.• External IDENT input.• External STBY input.• External suppression pulse input.• Switched power output of up to 1.5 amps (for digital altitude encoder power).• Aircraft power input (11 to 33 volts).• Aircraft dimming buss input voltage.• Aircraft master switch turn-on option.
Page 1-2 GTX 330 Installation ManualRev. 1 190-00207-02• Serial altitude or GPS groundspeed input.• Serial altitude output.• Mode S with Extended Squitter, Comm A and Comm B protocol.• Temperature, Altitude Hold, Density Altitude and the ability to enter flight ID or tail numbers.• Digitally recorded voice and discrete warning annunciator activated by Altitude Hold when limits are exceeded.• Diversity: GTX 330 is available with or without the Diversity feature.1.4 GTX 330 TECHNICAL SPECIFICATIONS1.4.1 GTX 330 Electrical SpecificationsSPECIFICATION CHARACTERISTICTSO, JTSO; GTX 330 TSO-C112 CL2A4 121 010, JTSO-2C112a.TSO, JTSO; GTX 330D TSO-C112 CL2A4 121 011, JTSO-2C112a.TSO ENV CAT Refer to appendix AApplicable Documents RTCA DO-160D, DO-181CTemperature Range -45°C to +55°C (Continuous Operation)Power Requirements 11.0 to 33.0 Vdc; Power Input: 22 Watts typical,45 Watts MaximumHumidity 95% @ +55°C for 16 Hours; 85% @ +38°C for 32HoursAltitude 55,000 FeetTransmitter Frequency 1090 MHzTransmitter Power 125 Watts minimum, 250 Watts nominal.Receiver Frequency 1030 MHzReceiver Sensitivity -74 dBm Nominal for 90% repliesMode A Capability 4096 Identification CodesMode C Capability 100 Foot Increments from -1000 to 62,700 feet.25 Foot Increments with suitable serial data link.Mode S Capability Aircraft Identification, Altitude and Ground SpeedExternal Suppression Input Low ≤ 0.5 V; High ≥ 8 V
GTX 330 Installation Manual Page 1-3190-00207-02 Rev. 11.4.2 Physical Characteristics of the GTX 330SPECIFICATION CHARACTERISTICBezel Height 1.65 inches (42 mm)Bezel Width 6.25 inches (159 mm)Rack Height (Dimple to Dimple) 1.68 inches (43 mm)Rack Width 6.30 inches (160 mm)Depth Behind Panel withConnectors (measured from faceof aircraft panel to rear ofconnector backshells)11.25 inches (286 mm)GTX 330 Unit Weight 3.4 lbs. (1.5 kg)GTX 330 Rack Weight (Installedwith rack and connectors)4.2 lbs. (1.9 kg)1.4.3 GTX 330 Configurations AvailableGARMIN P/N GTX 330 Description010-00230-00 Black Front Panel010-00230-20 Gray Front Panel010-00230-10 Black Front Panel, Diversity010-00230-30 Gray Front Panel, Diversity1.4.4 Equipment AvailableITEM GARMIN P/NSub Assy, Connector Kit, GTX 330 011-00583-00SMP, Install Rack, GTX 330 115-00294-00Sub Assy, Backplate, GTX 330 011-00582-00(For use with GTX 330)Sub Assy, Backplate, GTX 330D 011-00582-01(For use with GTX 330D)GARMIN GTX 330 Antenna kit 010-10160-00
Page 1-4 GTX 330 Installation ManualRev. 1 190-00207-021.4.5 Additional Equipment Required•Antenna Sealant - Use antenna manufacturer’s instructions, install according to FAA AC 43.13-2A.•Cables - The installer will supply all system cables including circuit breakers. Cable requirements andfabrication is detailed in Section 2 of this manual.•Hardware - #6 Flat Head Screw (6 ea.) and #6-32 Self-Locking Nut (6 ea.). Hardware required tomount installation rack is not provided.•Encoding Altitude Digitizer - Use encoding altimeter manufacturer’s instructions, install according toFAA AC 43.13-2A.1.5 INSTALLATION APPROVALThe conditions and tests required for TSO approval of the GTX 330 Transponder and antenna are minimumperformance standards. It is the responsibility of those desiring to install this transponder and antenna either on orwithin a specific type or class of aircraft to determine that the aircraft installation standards are within the TSOstandards. For GTX 330 TSO compliance, see Appendix A. For antenna TSO compliance, refer to antennamanufacturer’s literature.1.6 AIRCRAFT STATION LICENSING REQUIREMENTSThe Telecommunications Act of 1996, effective February 8, 1996, provides the FCC discretion to eliminate radiostation license requirements for aircraft and ships. The GTX 330 installation must comply with current transmitterlicensing requirements. To find out the specific details on whether a particular installation is exempt from licensing,please see FCC Fact Sheet PR 5000 or contact the FCC at (800)-322-1117.If an aircraft license is required, make application for a license on FCC form 404, Application for Aircraft RadioStation License. The FCC also has a fax-on-demand service to provide forms by fax at (202)-418-0177.The GTX 330 owner accepts all responsibility for obtaining the proper licensing before using the transponder.
GTX 330 Installation Manual Page 1-5190-00207-02 Rev. 11.7 LIMITED WARRANTYGARMIN warrants this product to be free from defects in materials and manufacture for one year from the date ofpurchase. GARMIN will, at its sole option, repair or replace any components that fail in normal use. Such repairs orreplacement will be made at no charge to the customer for parts or labor. The customer is, however, responsible forany transportation costs. This warranty does not cover failures due to abuse, misuse, accident or unauthorizedalteration or repairs.THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALLOTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDING ANY LIABILITY ARISINGUNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAYVARY FROM STATE TO STATE.IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT ORCONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITY TO USETHIS PRODUCT OR FROM DEFECTS IN THE PRODUCT. SOME STATES DO NOT ALLOW THEEXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS MAYNOT APPLY TO YOU.To obtain warranty service, call the GARMIN Customer Service department (913-397-8200) for a returnedmerchandise tracking number. The unit should be securely packaged with the tracking number clearly marked on theoutside of the package and sent freight prepaid and insured to a GARMIN warranty service station. A copy of theoriginal sales receipt is required as the proof of purchase for warranty repairs. GARMIN retains the exclusive rightto repair or replace the unit or offer a full refund of the purchase price at its sole discretion. SUCH REMEDYSHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.
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GTX 330 Installation Manual Page 2-1190-00207-02 Rev. 12. INSTALLATION2.1 INTRODUCTIONThis section provides the necessary information for installing the GTX 330 Mode S Transponder, and whererequired, optional accessories. Installation of the GTX 330 will differ according to equipment location and otherfactors. Cabling will be fabricated by the installing agency to fit these various requirements. Appendix B containsinterconnect wiring diagrams, mounting dimensions, and information pertaining to installation. Each installationshall be accomplished to meet the requirements of FAA AC 43.13-2A.2.2 UNPACKING AND INSPECTING EQUIPMENTCarefully unpack the equipment and make a visual inspection of the unit for evidence of damage incurred duringshipment. If the unit is damaged, notify the carrier and file a claim. To justify a claim, save the original shippingcontainer and all packing materials. Do not return the unit to GARMIN until the carrier has authorized the claim.Retain the original shipping containers for storage. If the original containers are not available, a separate cardboardcontainer should be prepared that is large enough to accommodate sufficient packing material to prevent movement.2.3 ANTENNA INSTALLATION2.3.1 Location ConsiderationsFigure 2-1. Antenna Installation ConsiderationsA. The antenna (GARMIN P/N 010-10160-00) should be mounted away from major protrusions, such asengine(s), propeller(s), and antenna masts. It should also be as far as practical from landing gear doors,access doors, or other openings that could effect its radiation pattern.B. The antenna should be mounted on the underside of the aircraft and in a vertical position when theaircraft is in level flight. The diversity antenna should be mounted on the top of the aircraft.C. Avoid mounting the antenna within three feet of the ADF sense antenna or any other communicationantenna and six feet from the DME antenna.D. To prevent RF interference, the antenna must be physically mounted a minimum distance of three feetfrom the GTX 330.
Page 2-2 GTX 330 Installation ManualRev. 1 190-00207-02NOTEIf the antenna is being installed on a composite aircraft, ground planes must sometimes beadded. Conductive wire mesh, radials, or thin aluminum sheets embedded in the compositematerial provide the proper ground plane allowing the antenna pattern (gain) to be maximizedfor optimum transponder performance.2.3.2 Antenna InstallationInstall the antenna according to the antenna manufacturer’s instructions and FAA AC 43.13-2A.2.3.3 Installation Approval Considerations for Pressurized AircraftAntenna and cable installations on pressurized cabin aircraft require FAA approved installation design andengineering substantiation data whenever such installations incorporate alteration (penetration) of the cabin pressurevessel by connector holes and/or mounting arrangements.For needed engineering support pertaining to the design and approval of such pressurized aircraft antennainstallations, it is recommended that the installer proceed according to any of the following listed alternatives:1. Obtain approved antenna installation design data from the aircraft manufacturer.2. Obtain an FAA approved Supplemental Type Certificate (STC) pertaining to and valid for the subjectantenna installation.3. Contact the FAA Aircraft Certification Office in the appropriate Region and request identification of FAADesignated Engineering Representatives (DERs) who are authorized to prepare and approve the requiredantenna installation engineering data.4. Obtain FAA Advisory Circular AC-183C and select (and contact) a DER from the roster of individualsidentified thereunder.5. Contact an aviation industry organization such as the Aircraft Electronics Association and request theirassistance.
GTX 330 Installation Manual Page 2-3190-00207-02 Rev. 12.3.4 Antenna Cable InstallationWhen routing antenna cables, observe the following precautions:•All cable routing should be kept as short as possible and as direct as possible.•Avoid sharp bends.•Avoid routing cables near power sources (e.g., 400 Hz generators, trim motors, etc.) or near power forfluorescent lighting.•Avoid routing cable near ADF antenna cable (allow at least a 12-inch separation).The following table lists examples of the recommended antenna cable vendors and the type of cable to be used forspecific lengths of cable. Any cable meeting specifications is acceptable for the installation. The maximum coaxialcable attenuation at 1090 MHz must not exceed 1.5 dB.Max. Length (feet) ECS Type MIL-C-17 Type RG Type8.8 M17/128 RG40010.0 3C142B12.5 M17/112 RG30417.0 311601 M17/127 RG39321.0 31150127.0 31120141.0 310801Supplier Information Vendor: ElectronicCable Specialists5300 W. Franklin DriveFranklin, WI 53132Tel: 800-327-9473414-421-5300Fax: 414-421-5301MIL-C-17 types: Seecurrent issue ofQualified Products ListQPL-17.RG types: See currentissue of QualifiedProducts List QPL-17.
Page 2-4 GTX 330 Installation ManualRev. 1 190-00207-022.4 COOLING AIRThe GTX 330 meets all TSO requirements without forced air-cooling. (The application of forced air cooling to therear air nozzle of the GTX 330 provides beneficial cooling to the unit. The GTX 330 is designed to dissipate itsinternal heat without the need of blowing air inside the unit.)The GTX 330 was designed to handle a constant 450 PRF, with short periods of 1200 PRF. Rate limit is set at 1200PRF. A typical radar site would interrogate the transponder once every 5 to 10 seconds for approximately 100 msecat a 400 PRF rate. In very high traffic areas with multiple ground stations and TCAS traffic it is possible to havelong term PRF rates above 450 PRF. The GTX 330 measures the unit temperature and without forced air-cooling thereply rate will be reduced to protect the transmitter from overheating.2.5 GTX 330 INSTALLATIONNOTEAvoid installing the unit near heat sources. If this is not possible, insure thatadditional cooling is provided. Allow adequate space for installation of cables andconnectors. The installer will supply and fabricate all of the cables. All wiring mustbe in accordance with FAA AC 43.13-2A.Figure 2-2 Unit Installation Considerations1. Assemble the connector/rack kit according to figure 4-2. Install the rack assembly according to thedimensions given in figures 4-1 and paragraph 1.4.2 Physical Characteristics of the GTX 330. Mountingbrackets are not supplied due to the wide range of mounting configurations available. Suitable mountingbrackets may be fabricated from sheet metal or angle stock. To insure a sturdy mount, rear support forthe unit must be provided.2. Looking at the bottom of the transponder, make sure the front lobe of the locking mechanism is in avertical position. This can be accomplished by using a 3/32” Allen wrench through the face plate.3. Slide the unit into the rack until the front lobe of the unit touches the rack.4. Turn the Allen wrench clockwise until unit is secured in the rack. Continue turning until tight. Do notovertighten the screw.5. To remove the unit from the rack, turn the 3/32” Allen wrench counterclockwise until it disengages fromthe rack.
GTX 330 Installation Manual Page 3-1190-00207-02 Rev. 13. INSTALLATION PROCEDURE3.1 ANTENNA INSTALLATION3.1.1 Antenna InstallationInstall the antenna according to the antenna manufacturer’s instructions and FAA AC 43.13-2A.3.1.2 Antenna Cable ConnectorsThe antenna cable requires a BNC connector at the antenna and a male BNC “Blindmate” connector(P/N 330-00053-01, supplied with GTX 330 backplate assembly, 011-00582-00/01 at the transponder. Follow BNCconnector manufacturer instructions for assembly of the BNC connector.3.2 ELECTRICAL CONNECTIONSAll electrical connections, except for the antenna, are made through a single, 62 pin D-subminiature connector.Figure 2-1 defines the electrical characteristics of all input and output signals and identifies the cable requirementsfor each signal. Required connector and associated hardware are supplied in the connector kit (P/N 011-00583-00).See figures 4-1 and 4-2 for interconnect wiring diagrams.CAUTIONCheck wiring connections for errors before inserting the GTX 330 into the rack.Incorrect wiring could cause internal component damage.Pin Contact Part Numbers62 pin connector (P3301)Wire Gauge 22-28 AWGGARMIN P/N 336-00021-00Military P/N M39029/58-360Recommended Crimp ToolsWire Gauge 20-24 AWGHand CrimpingToolPositioner Insertion/Extraction ToolMilitary P/N M22520/2-01 M22520/2-08 M81969/1-02Positronic 9507 9502-5 M81969/1-02ITT Cannon 995-0001-584 995-0001-604 980-2000-426AMP 601966-1 601966-5 91067-2Daniels AFM8 K13-1 M24308/1-02Astro 615717 615724 M81969/1-02NOTES1. Insertion/extraction tools from ITT Cannon are all plastic; others are plastic with metal tip.2. Non-GARMIN part numbers shown are not maintained by GARMIN and consequently are subject tochange without notice.3. All wires must be passed through the backshell before being assembled to connector.
Page 3-2 GTX 330 Installation ManualRev. 1 190-00207-023.4 POST INSTALLATION CHECKOUTCAUTIONBe sure to check all aircraft control movements before flight is attempted to insurethat the wiring harness does not touch any moving part.Verify proper operation of the transponder during a flight test under VFR conditions.
GTX 330 Installation Manual Page 3-5 (Page 3-6 blank)190-00207-02 Rev 1Figure 3-1 GTX 330 OUTLINE DRAWING
GTX 330 Installation Manual Page 3-7 (Page 3-8 blank)190-00207-02 Rev 1Figure 3-2 GTX 330 CONNECTOR/RACK ASSEMBLY DRAWING
GTX 330 Installation Manual Page 3-9 (Page 3-10 blank)190-00207-02 Rev 1Figure 3-3 GTX 330 RECOMMENDED PANEL CUTOUT DIMENSIONS
GTX 330 Installation Manual Page 4-1190-00207-02 Rev. 14. SYSTEM INTERCONNECTS4.1 PIN FUNCTION LIST4.1.1 J3301123456789101112131415222324252627282930313233343536444647484950515253545556161718192021373839404142575859606162Figure 4-1. Rear Connector, J3301Connector P3301Pin Pin Name I/O1 AVIONICS MASTER ON SELECT* In2 ALTITUDE A1 In3 ALTITUDE C2 In4 ALTITUDE A2 In5 ALTITUDE A4 In6 ALTITUDE C4 In7 ALTITUDE B1 In8 ALTITUDE C1 In9 ALTITUDE B2 In10 ALTITUDE B4 In11 ALTITUDE D4 In12 EXTERNAL IDENT SELECT* In13 EXTERNAL STANDBY SELECT* In14 28 V LIGHTING BUS HI In15 AUDIO OUT HI Out16 AUDIO OUT LO Out17 SQUAT SWITCH IN In18 RESERVED --19 ALTITUDE ALERT ANNUNCIATE* Out20 RESERVED --21 AIRCRAFT POWER In22 RS 232 IN 1 In23 RS 232 OUT 1 Out24 RS 232 IN 2 In25 RS 232 OUT 2 Out26 ARINC 429 IN 3 A In27 AIRCRAFT GROUND --28 ARINC 429 OUT 2 B Out29 ARINC 429 IN 3 B In30 ARINC 429 OUT 2 A Out31 EXTERNAL SUPPRESSION I/O I/O32 ARINC 429 IN 1 A In33 ARINC 429 IN 2 A InTable 4-1. P3301 Pin Assignments
Page 4-2 GTX 330 Installation ManualRev. 1 190-00207-02Connector P3301, continuedPin Pin Name I/O34 ARINC 429 OUT 1 B Out35 ARINC 429 IN 1 B In36 ARINC 429 IN 2 B In37 ARINC 429 OUT 1 A Out38 TEMPERATURE PROBE 1 OUT Out39 TEMPERATURE PROBE 1 IN In40 RESERVED --41 TEMPERATURE PROBE 2 OUT Out42 AIRCRAFT POWER In43 AIRCRAFT GROUND --44 TEMPERATURE PROBE 2 IN In45 14 V/5 V LIGHTING BUS HI In46 TIS CONNECT SELECT* In47 RESERVED --48 ARINC 429 IN 4 A In49 ARINC 429 IN 4 B In50 ALTITUDE COMMON (GROUND) In51 RESERVED --52 RESERVED --53 RESERVED --54 RESERVED --55 RESERVED --56 RESERVED --57 RESERVED --58 RESERVED --59 RESERVED --60 RESERVED --61 RESERVED --62 SWITCHED POWER OUT OutTable 4-1. P3301 Pin Assignments (Cont’d)* Ground to activate.Refer to Figure 4-1 on page 4-5 for GTX 330 interconnect wiring diagram.
GTX 330 Installation Manual Page 4-3190-00207-02 Rev. 14.2 Power and Lighting FunctionPower Input requirements and Lighting Bus input are listed in the following tables. The power-input pins accept11-33 VDC. Switched Power Out is a power source available for devices such as a remote digital altitude encoder.4.2.1 Aircraft PowerPIN NAME CONNECTOR/PIN I/OAIRCRAFT POWER P3301 21 InAIRCRAFT POWER P3301 42 InSWITCHED POWER OUT P3301 62 OutAIRCRAFT GROUND P3301 27 --AIRCRAFT GROUND P3301 43 --Table 4-2. Aircraft Power Pin Assignments4.2.2 Lighting BusThe GTX 330 unit can be configured to track a 28 VDC, 14 VDC, 5 VDC or 5 VAC lighting bus using these inputs.The GTX 330 can also automatically adjust for ambient lighting conditions based on the photocell. Refer to sections5.2.5. and 5.2.6.PIN NAME CONNECTOR/PIN I/O14 V/5 V LIGHTING BUS HI P3301 45 In28 V LIGHTING BUS HI P3301 14 InTable 4-3. Aircraft lighting Pin Assignments4.3 Temperature InputsPin Name Connector Pin I/OTEMPERATURE PROBE 1 OUT P3301 38 OutTEMPERATURE PROBE 1 IN P3301 39 InTEMPERATURE PROBE 2 OUT P3301 41 OutTEMPERATURE PROBE 2 IN P3301 44 InTable 4-4. Temperature Probe Pin AssignmentsTemperature is used for Density Altitude computations. Probe #1 is for a voltage mode sensor. Probe #2 is for acurrent mode sensor. Refer to section 5.2.11.
Page 4-4 GTX 330 Installation ManualRev. 1 190-00207-024.4 Altitude FunctionAltitude inputs are considered active if either the voltage to ground is < 1.9 V or the resistance to ground is < 375 Ω.These inputs are considered inactive if the voltage to ground is 11-33 VDC.NOTEThe GTX 330 contains internal altitude code line isolation diodes to prevent theunit from pulling the encoder lines to ground when the transponder is turned off.Pin Name CONNECTOR/PIN I/OALTITUDE D4 P3301 11 InALTITUDE A1 P3301 2 InALTITUDE A2 P3301 4 InALTITUDE A4 P3301 5 InALTITUDE B1 P3301 7 InALTITUDE B2 P3301 9 InALTITUDE B4 P3301 10 InALTITUDE C1 P3301 8 InALTITUDE C2 P3301 3 InALTITUDE C4 P3301 6 InALTITUDE COMMON P3301 50 --Table 4-5. Encoded Altitude Pin Assignments4.4.1 Altimeter Calibration and CheckoutRefer to section 5.2.13 for the gray code altitude checkout.4.4.2 Altimeter Interconnect, Dual GTX 330 UnitsRefer to Figure 4-2 on page 4-7 for Dual GTX 330 altimeter interconnect.4.5 Discrete InputsPin Name Connector Pin I/OEXTERNAL IDENT SELECT P3301 12 InEXTERNAL STANDBY SELECT* P3301 13 InSQUAT SWITCH IN P3301 17 InALTITUDE ALERT ANNUNCIATE* P3301 19 OutTIS CONNECT SELECT* P3301 46 InTable 4-6. Discrete Inputs Pin AssignmentsThese inputs are considered active if either the voltage to ground is < 1.9 V or the resistance to groundis < 375 Ω. These inputs are considered inactive if the voltage to ground is 11-33 VDC.EXTERNAL IDENT SELECT (remote IDENT) is a momentary input. Refer to sections 5.2.10. and 5.2.14 for thesquat switch.
GTX 330 Installation Manual Page 4-5190-00207-02 Rev. 14.6 Serial Data Electrical CharacteristicsPin Name Connector Pin I/ORS 232 OUT 1 P3301 23 OutRS 232 IN 1 P3301 22 InRS 232 OUT 2 P3301 23 OutRS 232 IN 2 P3301 24 InTable 4-7. RS 232 Pin AssignmentsThe RS-232 outputs conform to EIA Standard RS-232C with an output voltage swing of at least ± 5 V when driving astandard RS-232 load. Refer to Figure 4-2 on page 4-7 for the RS-232 serial data interconnect. Refer to sections5.2.9. and 5.2.16.Pin Name Connector Pin I/OARINC 429 OUT 1A P3301 37 OutARINC 429 OUT 1B P3301 34 OutARINC 429 IN 1A P3301 32 InARINC 429 IN 1B P3301 35 InARINC 429 IN 2A P3301 33 InARINC 429 IN 2B P3301 36 InARINC 429 OUT 2A P3301 30 OutARINC 429 OUT 2B P3301 28 OutARINC 429 IN 3A P3301 26 InARINC 429 IN 3B P3301 29 InARINC 429 IN 4A P3301 48 InARINC 429 IN 4B P3301 49 InTable 4-8. ARINC 429 Pin AssignmentsThe ARINC 429 outputs conform to ARINC 429 electrical specifications when loaded with up to 5 standard ARINC429 receivers. Refer to sections 5.2.8. and 5.2.17.
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GTX 330 Installation Manual Page 4-5 (Page 4-6 blank)190-00207-02 Rev 1Figure 4-1 GTX 330 INTERCONNECT WIRING DIAGRAM
GTX 330 Installation Manual Page 4-7 (Page 4-8 blank)190-00207-02 Rev 1Figure 4-2 DUAL TXP INTERCONNECT WIRING DIAGRAM, ENCODING ALTITUDE CONNECTIONS
GTX 330 Installation Manual Page 5-1190-00207-02 Rev. 15. POST INSTALLATION CONFIGURATION AND CHECKOUT PROCEDURE5.1 OPERATIONNOTEThe coverage you can expect from the GTX 330 is limited to line of sight. Low altitude orantenna shielding by the aircraft itself may result in reduced range. Range can be improvedby climbing to a higher altitude. It may be possible to minimize antenna shielding bylocating the antenna where dead spots are only noticed during abnormal flight attitudes.Figure 5-1. GTX 330 Front PanelNOTEThe GTX 330 should be turned off before starting aircraft engine(s).5.1.1 Function Selector SwitchesThe function selection switches are:• OFF  Powers off the GTX 330. Pressing the STBY, ON or ALT key powers on the transponderdisplaying the last active identification code.• STBY  Selects the standby mode. When in standby mode, the transponder will not reply to any interrogations.• ON  Selects Mode A and Mode S. In this mode, the transponder replies to Mode A, Mode C and ModeS interrogations, as indicated by the Reply Symbol (“®”), but the replies do not include altitudeinformation.• ALT  Selects Mode A, Mode C and Mode S. In ALT mode, the transponder replies to identification,altitude and Mode S interrogations as indicated by the Reply Symbol (“®”). Replies to altitudeinterrogations include the standard pressure altitude received from an external altitude source,which is not adjusted for barometric pressure. The ALT mode may be selected in aircraft notequipped with an optional altitude encoder; however, the reply signal will not include altitudeinformation.
Page 5-2 GTX 330 Installation ManualRev. 1 190-00207-02NOTEAny time the function switch is in the ON or ALT position the transponder becomes anactive part of the Air Traffic Control Radar Beacon System (ATCRBS). Thetransponder also responds to interrogations from TCAS equipped aircraft.• IDENT  Pressing the IDENT key activates the Special Position Identification (SPI) Pulse for 18 seconds,identifying the transponder return from others on an air traffic controller’s screen. During theIDENT period the word ‘IDENT’ appears in the upper left corner of the display.• VFR  Sets the transponder code to the pre-programmed VFR code selected in Configuration Mode (Set to 1200 at the factory). Pressing the VFR key again will restore the previous identification code.• FUNC  Changes the page shown on the right side of the display. Display data includes PressureAltitude, Flight Time, Count Up and Count Down timers. In the Configuration Mode, stepsthrough the function pages.• START/ STOP  Starts and stops the Count Up, Count Down and Flight timers. In configuration mode,steps through functions in reverse.• CRSR  Initiates entry of the starting time for the Count Down timer and cancels transponder code entry.Selects changeable fields in Configuration Mode.• CLR  Resets the Count Up, Count Down and Flight timers. Cancels the previous keypress during codeselection and Count Down entry. Used in Configuration Mode.• 8  Reduces Contrast and Display Brightness when the respective fields are displayed and enters thenumber eight into the Count Down timer. Used in Configuration Mode.• 9  Reduces Contrast and Display Brightness when the respective fields are displayed and enters thenumber eight into the Count Down timer. Used in Configuration Mode.5.1.2 Code SelectionCode selection is done with eight keys (0 – 7) providing 4,096 active identification codes. Pushing one of these keysbegins the code selection sequence. The new code is not activated until the fourth digit is entered. Pressing the CLRkey moves the cursor back to the previous digit. Pressing the CLR key when the cursor is on the first digit of thecode, or pressing the CRSR key during code entry, removes the cursor and cancels data entry, restoring the previouscode. You may press the CLR key up to five seconds after code entry is complete to return the cursor to the fourthdigit. The numbers 8 and 9 are not used for code entry, only for entering a Count Down time, contrast and displaybrightness and in the Configuration Mode.NOTEThe selected identification code should be entered carefully, either one assigned by airtraffic control for IFR flight or an applicable VFR transponder code.
GTX 330 Installation Manual Page 5-3190-00207-02 Rev. 1• Important Codes:1200  The VFR code for any altitude in the US (Refer to ICAO standards elsewhere)7000  The VFR code commonly used in Europe (Refer to ICAO standards)7500  Hijack code (Aircraft is subject to unlawful interference)7600  Loss of communications7700  Emergency7777  Military interceptor operations (Never squawk this code)0000  Military use (Not enterable)Avoid selecting code 7500 and all codes in the 7600-7777 range. These codes trigger special indicators in automatedfacilities. An aircraft’s transponder code is used for ATC tracking purposes, therefore exercise care when makingroutine code changes.5.1.3 Function DisplayPRESSURE ALT  Displays the altitude data supplied to the GTX 330 in feet, hundreds of feet (i.e., flightlevel), or meters, depending on configuration.FLIGHT TIME  Displays the Flight Time, controlled by the START/STOP key or by one of threeairborne sources (squat switch, GPS ground speed recognition or altitude increase) asconfigured during installation. The timer begins when the GTX 330 determines that theaircraft is airborne.ALTITUDE MONITOR  Activates a voice alarm and warning annunciator when altitude limit isexceeded.COUNT UP TIMER  Controlled by START/STOP and CLR keys.COUNT DOWN TIMER  Controlled by START/STOP, CLR, and CRSR keys. The initial Count Downtime is entered with the 0 – 9 keys.CONTRAST  This page is only displayed if manual contrast mode is selected in Configuration Mode.Contrast is controlled by the 8 and 9 keys .DISPLAY  This page is only displayed if manual backlighting mode is selected in Configuration Mode.Backlighting is controlled by the 8 and 9 keys.
Page 5-4 GTX 330 Installation ManualRev. 1 190-00207-025.2 CONFIGURATION PAGESHolding down the FUNC key and pressing the ON key provides access to the configuration pages. The FUNC keysequences forward through the configuration pages. The START/STOP button reverses through the pages, stoppingat the Menu page. The CRSR key will highlight selectable fields on each page. When a field is highlighted, numericdata entry will be performed with the 0 – 9 keys and list selections will be performed with the 8 or 9 keys. Press theCRSR key to accept changes. Pressing the FUNC key moves on to the next configuration page without saving thechanges. Changes made through the configuration pages are stored in EEPROM memory. To exit the configurationpages, turn the power off and then on again (without holding the FUNC key).The configuration page sequence is as follows (menu categories are listed in parenthesis):• ‘Jump To’ Menu• Audio and Messages (first and second pages)• Traffic Information• Display Mode• Display Backlight• Key Backlight• Contrast• ARINC 429 Input #1 (first I/O Configuration page)• ARINC 429 Input #2 (second I/O Configuration page)• ARINC 429 Output• RS232 Input• Operation Configuration #1 (first Aircraft Configuration page)• Operation Configuration #2 (second Aircraft Configuration page)• Temperature• Aircraft Address• Flight ID• Aircraft Type• Squat Switch Setup• Gray Code Input• External Switch State• Analog Input• RS232 Input Display• ARINC 429 Input Display #1• ARINC 429 Input Display #2.
GTX 330 Installation Manual Page 5-5190-00207-02 Rev. 15.2.1 Configuration Menu PageCONFIGURATION MENUThe JUMP TO menu page provides the capability to select a configuration mode starting page without having to stepthrough all of the pages. Select the desired section with the CRSR key and sequence through with the 8 and 9 keys.Jump to the selection by pressing the CRSR key again with the desired selection highlighted.The FUNC key steps to the next configuration page, after which the START/STOP key reverses until stopping at theMenu page.Selection DescriptionDIAGNOSTICS Jumps to Gray Code Input page.DISPLAY/AUDIO Jumps to Audio Volume page.I/O CONFIG Jumps to ARINC 429 INPUT #1 page.ACFT CONFIG Jumps to configuration Operation Configuration #1 page.5.2.2 AUDIO MODE PagesAUDIO MODESelection DescriptionVOICE (MALE FEMALE) Sets the voice to male or female. Default is male voice.VOLUME Volume is adjusted from 0 (default) to maximum with the 8 or 9 key.MESSAGE (0-9) Selected tones and messages.ALTITUDE MONITOR Off, tone or message.COUNT DOWN TIMER Off, tone or message.DISABLE Messages either enabled or disabled.MESSAGEMessage “0” is an on-off beeping tone. Message “1” through “5” are selected tones messages.5.2.3 TRAFFIC INFORMATION PAGETRAFFIC MESSAGESSets the Traffic Messages to tone, Message or Off. Traffic Information Services (TIS) provides notification of closeproximity traffic.CONFIGURATION MENU PageAUDIO MODE (First) PageAUDIO MODE (Second) PageTRAFFIC INFORMATION Page
Page 5-6 GTX 330 Installation ManualRev. 1 190-00207-025.2.4 DISPLAY MODE PAGEDISPLAY MODESelection DescriptionAUTO (Automatic) DEFAULT. The display will automatically change between Positivemode (during the day) and Negative mode (at night), depending on theambient light level received by the photocell.NGTV (Negative) The display will always be light characters on a black background,regardless of ambient lighting.PSTV (Positive) The display will always be black characters on a light background,regardless of ambient lighting.LEVELSets the ambient light level for AUTO mode to change between negative and positive display. The higher thenumber, the brighter the ambient light level to change over. This field has a range of 0 (zero) to 99, and is set to 75 atthe factory.5.2.5 DISPLAY BACKLIGHT PageBKLT (Backlight)Selection DescriptionMAN (Manual) Display backlighting is controlled manually by the pilot on theGTX 330 DISPLAY page. No backlight parameters can be enteredwhen the manual mode is selected.AUTO (Automatic) DEFAULT. Display backlighting is automatically controlled, basedon the parameters entered on this configuration page. When AUTO isselected, the DISPLAY page does not appear to the pilot.LVL (Level)Shows the current level of display backlighting, based on the lighting input source (lighting bus voltage, or theambient light if the source is PHOTO) and the settings on this configuration page. This field has a range of 0 (zero)to 999, but is not a user-entered field (display only).RSP TIME (Response Time)Sets the speed with which the brightness responds to ambient light changes (only for AUTO backlight mode). Thehigher the number, the slower the display responds. This field has a range of 3 to 7, and is set to 4 at the factory.MIN (Minimum)Sets the minimum brightness of the display. The higher the number, the brighter the minimum brightness. Displayminimum brightness has a range of 0 (zero) to 99, and is set to 8 at the factory. It is prudent to verify that displaylighting characteristics match those of other equipment in the panel under night lighting conditions.DISPLAY MODE PageDISPLAY BACKLIGHT Page
GTX 330 Installation Manual Page 5-7190-00207-02 Rev. 1BKLT SRCE (Backlight Source)Selection DescriptionPHOTO (Photocell) DEFAULT. Backlight level is determined by the ambient light levelas measured by the photocell on the GTX 330.14V Backlight level tracks a 14 volt DC aircraft lighting bus.28V Backlight level tracks a 28 volt DC aircraft lighting bus.5V Backlight level tracks a 5 volt DC aircraft lighting bus.NOTEIf a lighting bus (any selection other than PHOTO) is selected, and the lighting bus control isturned to its minimum (daytime) setting, the display brightness will track the GTX 330 photocell.SLOPESets the sensitivity of the display brightness to changes in the input level. The higher the number, the brighter thedisplay will be for a given increase in the input level. This field has a range of 0 (zero) to 99, and is set to 50 at thefactory.OFFSETAdjusts the lighting level up or down for any given input level. This field has a range of 0 (zero) to 99, and is set to50 at the factory. This may also be used to match lighting curves with other equipment in the panel.5.2.6 KEY LIGHTING PageThe key lighting mode is always the same as the display backlight mode,so the mode must be changed on the Display Backlight configurationpage. If the lighting mode is AUTO, then the key lighting parameterscan be edited on this page.KEY (Key Lighting)Selection DescriptionMAN (Manual) Key lighting is controlled manually by the pilot on the GTX 330DISPLAY page.AUTO (Automatic) Key lighting is automatically controlled based on the parametersentered on this configuration page.LVL (Level)Shows the current level of key lighting, based on the lighting input source (lighting bus voltage, or the ambient lightif the source is PHOTO) and the settings on this configuration page. This field has a range of 0 (zero) to 999, but isnot a user-entered field (display only).KEY LIGHTING Page
Page 5-8 GTX 330 Installation ManualRev. 1 190-00207-02RSP TIME (Response Time)Sets the speed with which the brightness responds to ambient light changes (only for AUTO key lighting mode). Thehigher the number, the slower the key lighting responds. This field has a range of 3 to 7, and is set to 4 at the factory.MIN (Minimum)Sets the minimum brightness of the key lighting. The higher the number, the brighter the minimum brightness. Keylighting minimum brightness has a range of 0 (zero) to 99, and is set to 8 at the factory. It is prudent to verify thatkey lighting characteristics match those of other equipment in the aircraft panel under night lighting conditions.KEY SRCE (Key Lighting Source)Selection DescriptionPHOTO (Photocell) DEFAULT. Key lighting level is determined by the ambient lightlevel as measured by the photocell on the GTX 330.14V Backlight level tracks a 14 volt DC aircraft lighting bus.28V Backlight level tracks a 28 volt DC aircraft lighting bus.5V Backlight level tracks a 5 volt DC aircraft lighting bus.SLOPESets the sensitivity of the key lighting brightness to changes in the input level. The higher the number, the brighterthe key lighting will be for a given increase in the input level. This field has a range of 0 (zero) to 99, and is set to 50at the factory.OFFSETAdjusts the key lighting level up or down for any given input level. This field has a range of 0 (zero) to 99, and is setto 50 at the factory. This may also be used to match lighting curves with other equipment in the panel.5.2.7 CONTRAST MODE PageCONTRAST MODESelection DescriptionMAN (Manual) The display contrast is manually adjusted either here or by the pilotusing the GTX 330 CONTRAST page.AUTO (Automatic) DEFAULT. The display contrast is automatically compensated fortemperature and other factors. An offset can be entered in the contrastlevel adjustment described below.CONTRAST LEVEL ADJUSTMENTThis is a “slider” bar graph control. Use the 8 key to move the graph to the left, decreasing the numbers and contrastlevel. Use the 9 key to move it to the right, increasing the numbers and contrast level. It is set to 50% at the factory.In manual contrast mode, this is a direct adjustment of the display contrast. In automatic contrast mode, this adjuststhe offset to the automatically compensated contrast.CONTRAST Page
GTX 330 Installation Manual Page 5-9190-00207-02 Rev. 15.2.8 ARINC 429 CONFIGURATION PagesARINC 429 INPUTThe ARINC 429 INPUT Pages configure the ARINC 429 input ports.Each port can be configured independently for the desired function(s).SPEEDSelection DescriptionLow Standard low-speed ARINC 429 (nominally 12.5 kilobits per second).High High-speed ARINC 429 (nominally 100 kilobits per second).INPUT DATA 1, DATA 2 DATA 3, DATA 4Selection DescriptionOFF No unit connected to this ARINC 429 input.GPS Selected waypoint information.Airdata Altitude, temperature and speed information.AHRS Atitude, heading, temperature, and speed information.EFIS/Airdata Selected course, heading, and joystick waypoint and speedinformation.ARINC 429 OUTPUTThe ARINC 429 OUTPUT Pages configure the ARINC 429 output ports.Each port can be configured independently for the desired function(s).Selection DescriptionCHANNEL 1 (SPEEDand DATA)DATA SOURCE: AIRINC 735, GARMIN or OFF. DEFAULTS toOFF.CHANNEL 2 (DATA) DATA SOURCE: ADLP or OFF. DEFAULTS to OFF.5.2.9 RS 232 INPUT PAGERS 232 INPUT (Altitude Source)This is the electrical source for the GTX 330 altitude input.Selection DescriptionOFF DEFAULT. OFF. The altitude code input is not from a 429 source.ICARUS RS-232 serial altitude from an Icarus Instruments 3000.SHADIN-ADC RS-232 serial altitude from a Shadin 9628XX-X family of Air DataComputers and Fuel/Air Data Computers.SHADIN-ALT RS-232 serial altitude from a Shadin 8800T, 9000T, 9200T.ARINC 429 INPUT (First) PageARINC 429 INPUT (Second) PageARINC 429 OUTPUT PageRS 232 INPUT Page
Page 5-10 GTX 330 Installation ManualRev. 1 190-00207-025.2.10 OPERATION CONFIGURATION PAGESVS RATE (Vertical Speed Rate)This field is the typical vertical speed for climb/descent of the aircraft. This number determines when a climb ordescent arrow is displayed on the PRESSURE ALT page of the GTX 330. The range is 0 (zero) feet per minute to9999 feet per minute. It is set to 500 fpm at the factory.FORMAT (Altitude Format)This field determines how the pressure altitude will be shown on the GTX 330 display.Selection DescriptionFLIGHT LVL(Flight Level)DEFAULT. The pressure altitude is displayed in hundreds of feet. Forexample, a pressure altitude of 12,300 feet is displayed as “FL 123”.FEET Pressure altitude is displayed in feet.METERS Pressure altitude is displayed in meters.VFR ID (VFR Transponder Code)This field is the four-digit code that will be selected when the user presses the GTX 330 VFR key. In the United States, 1200 isthe VFR code for any altitude. It is set to 1200 at the factory.ALTITUDE ALERT DEVIATION (Altitude Format)This field determines the amount of altitude difference from selected altitude to generate an altitude alert deviation.SQUAT SWITCHThe GTX 330 Flight Timer and the Auto Standby feature may be basedon the squat switch state. The squat switch field may be set to either YES or NO.DELAY TIMEThis is the number of seconds the aircraft must be on the ground before the AUTO STANDBY feature automaticallyswitches to standby mode when the airborne source is the squat switch. It has a range of 0 (zero) seconds to 99seconds, and is set to 24 seconds at the factory.AUTO FLIGHT TIMERAvailable choices are YES or NO. Selecting YES starts the flight timer when the squat switch senses lift off.First CONFIGURATION PageSecond CONFIGURATION Page
GTX 330 Installation Manual Page 5-11190-00207-02 Rev. 15.2.11 TEMPERATURE PAGESENSOR INSTALLEDSets the Sensor to YES or NO. Default is NO.UNITSSets the units to degrees Fahrenheit or Centigrade. Default is degrees F.5.2.12 MODE S Address Entry PagesAircraft Registration or Flight ID Number PagesNOTEIt is VERY important to enter the Mode S address correctly in the GTX 330.During production of a GTX 330 the unit is initially set with an addressof 0. The software recognizes this as an invalid address. When the unitis powered on for the first time, it will prompt the user to enter a validaircraft address. (Addresses can be entered beginning at step 5 belowand ending after step 9 is completed.) Once the aircraft address isentered, the unit will remain on in the mode that it was turned on.Or, if the unit is not being turned on for the first time, with the unit powered off:1. Press and hold the FUNC key while powering on the unit.2. Power the unit on by pressing the ALT key or turn the unit on with the avionics master switch.The unit will perform a self-test routine and display a "Jump to Diagnostics" page.3. Press the FUNC key repeatedly to toggle through the pages until you come to the addressentry page.a. It will appear either as ADDRESS HEX _ _ _ _ _ _ .b. Or as ADDRESS US TAIL# N _ _ _ _ _ .4. If the alternate option is required, press the 8 or 9 key to move to the correct selection.5. For entering either the address hex code or the US registration number, press the CRSR key 1time. (This will highlight the address field).7. Enter the aircraft address using the number keys. Press a key repeatedly to scroll through thedigit and different alpha characters for that key.8. Press the CRSR key to select the next numeric entry field. Again press a number key asstated in step 7 and move onto the next field, repeating the process until the complete numberis entered.9. When finished, press the CRSR key again to accept the number entry.10. Use the FUNC key to toggle through the rest of the setup pages until it rolls back around to theaircraft address page.11. Verify that the address is correct. The unit now contains a Mode S address and may be turnedoff.TEMPERATURE PageMODE S Address (A/C Reg) PageMODE S Address (Flight ID) Page
Page 5-12 GTX 330 Installation ManualRev. 1 190-00207-02MODE S Aircraft Type PageSelection DescriptionAC TYPE ROTOR, >15.5K Lb, <15.5K Lb, or UNKNOWN.MAX AIRSPEED <75 Kts, <150 Kts, <300 Kts, >300 Kts, or UNKNOWN.ACQ SQUITTERINHIBITEDYES OR NO.AIRCRAFT TYPESets the AIRCRAFT TYPE Message to ROTOR, to a weight of Less Than 15,500 pounds, More Than 15,500pounds, or Unknown weight. Defaults to Less Than or equal to 15,500 pounds.MAXIMUM AIRSPEEDSets the AIRCRAFT AIRSPEED Message to a speed of Less Than or equal to 75 Knots, Less Than or equal to 150Knots, Less Than or equal to 300 Knots, More Than 300 Knots, or Unknown airspeed. Defaults to Less Than orequal to 300 Knots.ACQ SQUITTER INHIBITEDSets the ACQ SQUITTER INHIBITED to YES or NO. Defaults to NO.5.2.13 GRAY CODE INPUT PageGRAY CODEThis field shows the status (1 = ground, 0 = open) of each of the ten gray code altitude inputs. This information mayaid in installation troubleshooting.DECODED ALTITUDEThis field displays the gray code altitude input in feet. Verify that it is the correct altitude.MODE S (A/C Type) PageGRAY CODE INPUT Page
GTX 330 Installation Manual Page 5-13190-00207-02 Rev. 15.2.14 EXTERNAL SWITCH STATE PageIDENTThis field displays the state of the EXTERNAL IDENT discrete input. The box is filled when EXTERNAL IDENTis grounded.STANDBYThis field displays the state of the EXTERNAL STANDBY discrete input. The box is filled when EXTERNALSTANDBY is grounded.SQUATThis field displays the state of the SQUAT SWITCH input. The box is filled when the SQUAT SWITCH input isactive (the aircraft is on the ground as configured on the SETUP 2 page).5.2.15 ANALOG INPUT Page5.2.16 RS 232 INPUT Page5.2.17 429 CHANNNELS PagesEXTERNAL SWITCH PageANALOG INPUT PageRS 232 INPUT Page429 CHANNELS 1 and 2429 CHANNELS 3 and 4
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GTX 330 Installation Manual Page A1190-00207-02 Rev. 1APPENDIX A CERTIFICATION DOCUMENTSA.1 Continued AirworthinessOther than for regulatory periodic functional checks, maintenance of the GTX 330 is “on condition” only. Refer tothe GTX 330 Maintenance Manual, (Garmin P/N 190-00207-05). Periodic maintenance of the GTX 330 is notrequired.This section provides assistance to the installing agency in preparing Instructions for Continued Airworthiness (ICA)in response to Bulletin Number HBAW 98-18, “Checklist for Instructions for Continued Airworthiness for MajorAlterations Approved Under the Field Approval Process”, effective 10/7/98.Aviation Authority approved installers are hereby granted permission to reference appropriate service instructionsand excerpts from this Installation Manual to accomplish the Instructions for Continued Airworthiness. Thispermission does not construe suitability of the documents. It is the applicant’s responsibility to determine thesuitability of the documents for the ICA.Following is a suggested ICA for a GARMIN GTX 330 unit installation. Some of the checklist items do not apply, inwhich case they should be marked “N/A” (Not Applicable).INSTRUCTIONS FOR CONTINUED AIRWORTHINESS, GARMIN GTX 3301. Introduction[Aircraft that has been altered: Registration (N-) number, Make, Model and Serial Number]Content, Scope,Purpose and Arrangement: This document identifies the Instructions for Continued Airworthiness forthe modification of the above aircraft by installation of a GARMIN GTX 330.Applicability: Applies to aircraft altered by installation of the GARMIN GTX 330.Definitions and Abbreviations: None, N/A.Precautions: None, N/A.Units of Measurement: None, N/A.Referenced Publications: GARMIN GTX 330 Installation Manual, P/N 190-00207-02GARMIN GTX 330 Maintenance Manual, P/N 190-00207-05GARMIN STC # [applicable STC number for the specific model installed, refer to Appendix B of this manual].GARMIN GTX 330 Pilot’s Guide, P/N 190-00207-xx.Distribution: This document should be a permanent aircraft record.2. Description of the AlterationInstallation of the GARMIN GTX 330, with interface to Encoding Altimeter or Blind Encoder. Refer tosection 4 and figures 4-1 and 4-2 of this manual for interconnect information. Antenna installation, removaland replacement should be in accordance with applicable provisions of AC43.13-1B and 43.13-2A.3. Control, Operation InformationRefer to the GTX 330 Pilot’s Guide.4. Servicing InformationN/A
Page A2 GTX 330 Installation ManualRev. 1 190-00207-025. Maintenance InstructionsMaintenance of the GTX 330 is ‘on condition’ only. Periodic maintenance is not required. Refer to theGTX 330 Maintenance Manual.6. Troubleshooting InformationRefer to the GTX 330 Maintenance Manual.7. Removal and Replacement InformationRefer to section 2 of this manual. If the unit is removed and reinstalled, a functional check of the equipmentshould be conducted in accordance with section 5 of this manual.8. DiagramsRefer to section 3 and section 4 of this manual.9. Special Inspection RequirementsN/A10. Application of Protective TreatmentsN/A11. Data: Relative to Structural FastenersAntenna installation, removal and replacement should be in accordance with applicable provisions ofAC43.13-1A and 43.13-2A. Also, refer to section 2 of this manual.12. Special ToolsN/A13. This Section is for Commuter Category Aircraft OnlyA. Electrical loads: Refer to section 1.3 of this manual.B. Methods of balancing flight controls: N/A.C. Identification of primary and secondary structures: N/A.D. Special repair methods applicable to the airplane: Antenna installation, removal, and replacement should bein accordance with applicable provisions of AC43.13-1B and 43.13-2A.14. Overhaul PeriodNo additional overhaul time limitations.15. Airworthiness Limitation SectionN/A.16. RevisionTo revise this ICA, a letter must be submitted to the local FSDO with a copy of the revised FAA Form 337, andrevised ICA. The FAA inspector accepts the change by signing Block 3 and including the following statement:“The attached revised/new Instructions for Continued Airworthiness (date ______) for the above aircraft orcomponent major alteration have been accepted by the FAA, superseding the Instructions for ContinuedAirworthiness (date ______).”17. AssistanceFlight Standards Inspectors have the resources to respond to questions regarding the ICA.
GTX 330 Installation Manual Page A3190-00207-02 Rev. 1Implementation and Record KeepingFor major alterations performed in accordance with FAA field approval policy, the owner/operator operating underPart 91 is responsible for ensuring that the ICA is made part of the applicable section 91.409 inspection program fortheir aircraft. This is accomplished when a maintenance entry is made in the aircraft’s maintenance record inaccordance with section 43.9. This entry records the major alteration and identifies the original ICA location (e.g.,Block 8 of FAA Form 337, dated ______) along with a statement that the ICA is now part of the aircraft’sinspection/maintenance requirements.
Page A4 GTX 330 Installation ManualRev. 1 190-00207-02A.2 ENVIRONMENTAL QUALIFICATION FORMNOMENCLATURE: GTX 330 Airborne ATC/Mode S Transponder EquipmentTYPE/MODEL/PART NO.: 010-00230–( ), which includes 011-00455–( )TSO/JTSO COMPLIANCE: TSO – C112 Class 2A, and TSO - C74c Class 1AMANUFACTURER'S SPECIFICATION AND/OR OTHERAPPLICABLE SPECIFICATION: 004-00099-00 Minimum Performance SpecificationMANUFACTURER: GARMIN INTERNATIONALADDRESS: 1200 E 151st St, Olathe, Kansas 66062Conditions RTCA DO-160DSectionDescription of Conducted TestsTemperature and Altitude 4.0 Equipment tested to Categories A2 B2 F1Low Temperature 4.5.1 -45 degrees CHigh Temperature 4.5.2. & 4.5.3 +70 degrees CIn-Flight Loss of Cooling 4.5.4 Cooling air not required but highly recommendedAltitude 4.6.1 55,000 FeetDecompression 4.6.2Overpressure 4.6.3Temperature Variation 5.0 Equipment tested to Category BHumidity 6.0 Equipment tested to Category AShock 7.0 Equipment tested to Category BVibration 8.0 Equipment tested in each aircraft type to aircraft zone 2.Aircraft Type 2 and 6 were tested to Category S2,Vibration level B2. Aircraft Type 3, 4, and 5 were testedto Category S, Vibration level M.Note: DO-160D vibration level M modified to increaselevel to RTCA DO-160C Curve N for Helicopters asfollows-0.1 inches peak-to-peak double amplitude from5 Hz to 17 Hz, 1.5g-Pk from 17 Hz to 500 Hz.
GTX 330 Installation Manual Page A5190-00207-02 Rev. 1Conditions Section Description of Conducted TestsExplosion 9.0 Equipment identified as Category X, no test requiredWaterproofness 10.0 Equipment identified as Category X, no test requiredFluids Susceptibility 11.0 Equipment identified as Category X, no test requiredSand and Dust 12.0 Equipment identified as Category X, no test requiredFungus 13.0 Equipment identified as Category X, no test requiredSalt Spray 14.0 Equipment identified as Category X, no test requiredMagnetic Effect 15.0 Equipment tested to Class ZPower Input 16.0 Equipment tested to Category BZVoltage Spike 17.0 Equipment tested to Category AAudio Frequency ConductedSusceptibility18.0 Equipment tested to Category ZInduced Signal Susceptibility 19.0 Equipment tested to Category ZRadio FrequencySusceptibility20.0 Equipment tested for conducted susceptibility to CategoryT, radiated susceptibility to Category T, and pulse test toCategory T.Radio Frequency Emission 21.0 Equipment tested to Category B, Equipment tested toCategory M up to 2 GHz.Lightning Induced TransientSusceptibility22.0 Equipment identified as Category A3E3Lightning Direct Effects 23.0 Equipment identified as Category X, no test requiredIcing 24.0 Equipment identified as Category X, no test requiredElectrostatic Discharge (ESD) 25.0 Equipment identified as Category X, no test required
GTX 330 Installation Manual Page B1190-00207-02 Rev. 1APPENDIX BSTC PERMISSIONConsistent with N8110.69 or Order 8110.4, Aviation Authority approved installers are hereby granted permission touse STC #(xxxxxxxxx) data to modify aircraft.
Page B2 GTX 330 Installation ManualRev. 1 190-00207-02To be supplied

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