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Installation Procedures

GNS 480 (CNX80) Installation Manual

560-0982-01 Rev L

2-45

NOTE

GNS 480 performance has been verified in typical installations and has not shown
problems of the built-in COM interfering with the GPS when installed according to the
recommended installation guidelines.

If a VHF COM transmitter causes problems with the GPS on the selected frequencies as listed in the post-
installation checkout, the problem may be due to the ELT. This can be verified by disconnecting the ELT
antenna coax at the ELT unit. If the ELT is found to cause the problem, then contact the ELT
manufacturer or replace the ELT.

Figure 2-12 - Rear Coax Connector Assembly

2.9.3

NAV Antenna

The NAV antenna is a standard 50Ω horizontally polarized NAV/VOR/Localizer/Glideslope antenna that
receives VOR frequencies between 108 and 117.95 MHz, and localizer frequencies between 108 and 112
MHz, and glideslope information between 328.6 and 335.4 MHz. Follow the antenna manufacturer’s
installation instructions for mounting antennas. The NAV antenna should be mounted as far apart as
practical from the ELT antenna. It is recommended that the installer use RG-142B or equivalent 50Ω coax
for the NAV antenna.

The GNS 480 incorporates an internal diplexor circuit. This means that the input VHF signal must not
strip the glideslope (330 MHz) signal from the NAV (108 MHz) signal.

Do not install an external

diplexor

. It is recommended that a single VOR/Localizer/Glideslope antenna be used for the installation.

Most VOR/LOC-only antennas will still provide an adequate glideslope signal for the GNS 480 to operate
normally.

If two nav receivers (e.g. one GNS 480 and one SL30) are installed in the aircraft, a splitter must be used.
Installations should use an appropriate splitter, such as the Mini-Circuits ZFSC-2-1B BNC, available as an
option under the Garmin AT part number 115-0007.

2.10

Weight and Balance

Weight and balance computation is required after the installation of the GNS 480. Follow the guidelines as

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Содержание GNS 480

Страница 1: ...GNS 480 CNX80 Color GPS NAV COM Installation Manual November 2008 560 0982 01 Rev L...

Страница 2: ...itted disseminated downloaded or stored in any storage medium for any purpose without the express written permission of Garmin Garmin hereby grants permission to download a single copy of this manual...

Страница 3: ...9 3 08 Update airborne software to version 2 3 Update GPS WAAS antenna table to show antennas software combination that removes operational limitation Added note 4 to EQF L 11 7 08 Show SATCOM compat...

Страница 4: ...B 6 01 D 28 01 1 8 01 L 2 29 01 E 3 24 01 B 7 01 F D 29 01 1 9 01 B 2 30 01 E 3 25 01 B 8 01 L D 30 01 1 10 01 L 2 31 01 D 3 26 01 B 9 01 F D 31 01 H 1 11 01 L 2 32 01 L 3 27 01 B 10 01 L D 32 01 1 1...

Страница 5: ...STC AUTHORIZATION 1 16 1 5 DATABASE UPDATES 1 17 1 6 UNPACKING THE EQUIPMENT 1 17 1 7 PACKAGE CONTENTS 1 18 1 8 OPTIONAL ACCESSORIES 1 19 1 8 1 GPS ANTENNA OPTIONS 1 19 1 8 2 GPS ANTENNA DOUBLER 1 20...

Страница 6: ...COM ANTENNA 2 42 2 9 2 GPS ANTENNA 2 42 2 9 3 NAV ANTENNA 2 45 2 10 WEIGHT AND BALANCE 2 46 2 11 ELECTRICAL LOAD ANALYSIS 2 46 3 POST INSTALLATION CONFIGURATION CHECKOUT PROCEDURES 3 1 3 1 MOUNTING A...

Страница 7: ...VAL AND REPLACEMENT CONSIDERATIONS G 1 List of Tables TABLE 1 1 ANTENNAS WITHOUT OPERATIONAL LIMITATIONS 1 12 TABLE 1 2 ANTENNAS WITH OPERATIONAL LIMITATIONS 1 13 TABLE 1 3 TSO AUTHORIZATION 1 15 TABL...

Страница 8: ...TUBE CONNECTOR LAYOUT 2 17 FIGURE 2 8 37 PIN CONNECTOR 2 18 FIGURE 2 9 15 PIN CONNECTOR 2 19 FIGURE 2 10 78 PIN CONNECTOR DETAIL 2 22 FIGURE 2 11 GPS ANTENNA INSTALLATION CONSIDERATIONS 2 44 FIGURE 2...

Страница 9: ...BARO POTENTIOMETER SYNCRHO HEADING RMI INTERCONNECT DIAGRAM D 9 FIGURE D 5 RS 232 SERIAL INTERFACES INTERCONNECT DIAGRAM D 11 FIGURE D 6 GNS 480 TO SL10 15 AUDIO PANEL INTERCONNECT DIAGRAM D 13 FIGUR...

Страница 10: ...Table of Contents viii 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

Страница 11: ...B Includes SERIAL INTERFACE SPECIFICATIONS APPENDIX C Includes EQUIPMENT COMPATIBILITY information APPENDIX D Includes INTERCONNECT DIAGRAMS APPENDIX E Provides a listing of ACCEPTABLE AIRCRAFT BY EV...

Страница 12: ...NAV COM 1 2 1 Features The features of the GNS 480 Color GPS NAV COM include 10 36 VDC Power Capability Sunlight readable 256 color 3 8 diagonal LCD display GPS WAAS engine for state of the art fast...

Страница 13: ...faces are further described in the following sections COM Antenna NAV Antenna GPS Antenna GMX 200 or MX20 MFD SL15M Audio Selector Panel 430 6065 XX Audio Output GPS Position Altitude Encoder ARINC 42...

Страница 14: ...The GNS 480 is capable of driving one external course deviation indicator CDI with information based upon VHF NAV or GPS data The GNS 480 also accepts a resolver input from this CDI The GNS 480 is cap...

Страница 15: ...S 480 has one user configurable bi directional RS 422 port This port is not currently used 1 2 2 8 ARINC 429 Interfaces The GNS 480 has three ARINC 429 input ports and two ARINC 429 output ports Each...

Страница 16: ...cal 3 2 A max at 14 VDC transmit 1 0 A typical 1 6 A max at 28 VDC transmit Note receive max at full receive audio transmit max at 90 modulation at 1000 Hz Internal fuses Main input 3 amp fast blow so...

Страница 17: ...146a RTCA DO 229C Number of channels 15 12 GPS and 3 GPS WAAS SBAS Frequency 1575 42 MHz L1 C A code Sensitivity acquisition no interference 134 5 dBm GPS 135 5 dBm WAAS Sensitivity drop lock 144 dBm...

Страница 18: ...ide 1 3 7 COM Transmitter Performance TSO Compliance TSO C37d RTCA DO 186 DO 186a TSO C128 RTCA DO 207 Class 4 Output power 8 watts minimum carrier at 12 VDC input 6 watts minimum at 10 VDC input tran...

Страница 19: ...5 dB Audio response Less than 6 dB variation from 350 Hz to 2500 Hz 1 3 8 2 Localizer TSO compliance TSO C36e RTCA DO 195 Operational class A manual landing systems Accuracy category B 46o C to 55o C...

Страница 20: ...00 load max TO OFF FROM flag 250 mv TO FROM 200 load max NAV valid flag 300 mv for valid indication 200 load max NAV superflag Vin 2 volts minimum for valid source capability of 400 mA VDI up down 150...

Страница 21: ...1 3 9 3 Composite Output 1 3 9 3 1 VOR Mode Band pass frequency 0 Hz to 15 kHz Variation over frequency range Less than 2 dB Output signal voltage 0 500 VRMS Output loading 1 000 ohms max 1 3 9 3 2 LO...

Страница 22: ...244 00 013 00244 00 GA 36 GPS WAAS 6 Screw mount ARINC 743 TNC Aero Antenna AT575 126GW TNCF 000 RG 27 NM 013 00244 00 Garmin 013 00245 00 013 00245 00 GA 37 GPS WAAS XM 6 Screw mount ARINC 743 TNC TN...

Страница 23: ...tations when using the GA 35 antenna in conjunction with a future version of GPS software Consequently it is recommended that the GA 35 antenna be used whenever possible 2 Same mounting hole pattern a...

Страница 24: ...e Multipurpose Electronic Displays TSO C128 Devices That Prevent Blocked Channels Used in Two Way Radio Communications Due to Unintentional Transmission TSO C146a Class 3 Stand Alone Airborne Navigati...

Страница 25: ...JTSO Minimum Performance Standard Software ED 12B COM JTSO 2C37e Transmitter 100nm range JTSO 2C38e Receiver JTSO 2C128 Stuck Mic EUROCAE ED 23B EUROCAE ED 23B EUROCAE ED 67 Level C VOR ILS JTSO C34e...

Страница 26: ...e mask angel through operational limitations c The ability to further increase the effective mask angel through operational limitations to a level commensurate with test conditions used in the origina...

Страница 27: ...by the GNS 480 The data conversion process is performed using software that is developed and maintained under Garmin AT configuration management according to RTCA DO 200A Standards for Processing Aero...

Страница 28: ...61 xxx 1 GNS 480 Promotional CD 424 2014 8xx 1 GNS 480 Installation Kit see Table 1 7 for detail 424 2016 xxx 1 GNS 480 Hardware Kit See Table 1 8 for detail 428 0059 1 CompactFlash Card Reader USB 43...

Страница 29: ...ws qty 4 and O ring qty 1 An antenna doubler may also be required Refer to Section 1 8 2 below for additional information To secure the antenna 8 washers qty 4 and 8 qty 4 self locking nuts are requir...

Страница 30: ...by the Garmin GA Antenna AML STC SA01695SE An antenna doubler may also be required Refer to Section 1 8 2 below for additional information To secure the antenna 6 washers qty 4 and 6 qty 4 self locki...

Страница 31: ...Air Data Computer ALT Altitude APPR Approach COM VHF Communication DDM Differential Depth of Modulation DP Departure Procedure EN Engineering Notice FADC Fuel Air Data Computer GPS Global Positioning...

Страница 32: ...General Information 1 22 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

Страница 33: ...ce material defined in AC20 138A Airworthiness Approval of Global Navigation Satellite System GNSS Equipment The communications installation instructions have been prepared to meet the guidance materi...

Страница 34: ...lation of this STC does not change the types of approved airplane operations as defined by FAR 23 1525 e g IFR VFR day or night If a change in approved operations is desired additional aircraft approv...

Страница 35: ...unciator only required for some installations refer to 2 5 3 2 for additional information describing when a source selection annunciator is required To take full advantage of the GNS 480 capabilities...

Страница 36: ...gured to accept data from an RS 232 altitude encoder on different ports the GNS 480 cannot accept data from two RS 232 altitude encoders 4 SL70 SL70R Transponder or GTX 33 330 Transponder that receive...

Страница 37: ...minimize pilot head movement when transitioning between looking outside of the cockpit and viewing operating the GNS 480 The location should be such that the GNS 480 is not blocked by the glare shiel...

Страница 38: ...within 11 8 inches to the left of the centerline and the bottom edge of the GNS 480 is in the acceptable area the GNS 480 is considered within the acceptable field of view 4 If the GNS 480 does not me...

Страница 39: ...ithin this area to use the GNS 480 internal source annunciation Pilot s Instrument T Instrument T Centerline 13 in Glareshield 1 NOTES 1 FOR AIRCRAFT WITHOUT THE BASIC INSTRUMENT T CONFIGURATION THE C...

Страница 40: ...r power ground Avoid sharp bends 2 5 5 Air Circulation and Cooling The GNS 480 has internal fans for cooling No external cooling is required No special provisions are required during installation to a...

Страница 41: ...is key will fix the MAIN CDI output to VHF Navigation guidance This will prevent flagging of the CDI when the inoperative VHF navigator is selected The AUX CDI output is dedicated to GPS guidance info...

Страница 42: ...s recommended that the installer use eight screws four on each side The mating holes in the instrument panel structure must also be countersunk to accept the screw head so that the screw head is flush...

Страница 43: ...e the RF connectors may bind when the screws are tightened To further reduce the chances of binding ensure that the mounting flange on each RF connector is straight prior to installation when viewed f...

Страница 44: ...Installation Procedures 2 12 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Figure 2 3 GNS 480 Dimensions...

Страница 45: ...holes on the bottom of the connector plate keeping the ground leads to a maximum of 3 inches long 2 6 2 Unit Insertion Position the cam lock as shown below The front lobe of the cam should be vertical...

Страница 46: ...zel It is not recommended that you pull the unit out by the rotary knobs No special extraction tools are required if the mounting tube is properly installed 2 6 4 Unit Replacement Whenever the GNS 480...

Страница 47: ...Installation Procedures GNS 480 CNX80 Installation Manual 560 0982 01 Rev L 2 15 Figure 2 6 Mounting Frame Assembly...

Страница 48: ...tenna 162 1008 Coax Plug right angle mnt N A N A P4 COM I O 162 1575 15 Pin D Sub Receptacle 245 0027 20 24 AWG socket contact P5 I O Expansion 162 0109 78 Pin D Sub Plug 162 0082 22 28 AWG pin contac...

Страница 49: ...tor Definition Figure 2 7 Rear Mounting Tube Connector Layout NOTE The rear connector plate is shown with right angle RF connectors Straight RF connectors with female BNC connections Garmin AT P N 162...

Страница 50: ...op In COM Flip Flop discrete input active low 2 8 9 2 15 I UP Discrete In Activate COM User list and scrolls up active low 2 8 9 5 16 I Power Main Aircraft Power Input 10 to 36 VDC 2 8 1 17 O Time Mar...

Страница 51: ...r Main Aircraft Power Input 10 to 36 VDC 2 8 1 2 RESERVED RESERVED 3 RESERVED RESERVED 4 I PTT Push To Talk Transmit Key active low 2 8 9 4 5 RESERVED RESERVED 6 O COM Speaker Out Speaker output high...

Страница 52: ...O OBI Data Digital OBI Data 18 I Hdg Synchro Y Heading Synchro Input Y 2 8 6 19 I Hdg Synchro X Heading Synchro Input X 20 I Hdg Synchro Ref Hi Heading Synchro Reference In Hi 21 O RS 232 TxD5 RS 232...

Страница 53: ...2 8 7 4 62 O Parallel Track Annc Parallel Track Annunciator active low 2 8 7 5 63 O Suspend Annunciate Suspend Annunciator active low 2 8 7 6 64 O Message Annunciate Message Annunciator active low 2 8...

Страница 54: ...ME RMI Z Y X H B B A A A A R B B T T R Discrete Outputs 2 3 2 C H 7 8 4 2 9 I N 3 4 2 9 I N 2 4 2 9 I N 1 R S V D 4 2 9 O U T 2 4 2 9 O U T 1 2 3 2 C H 5 C SYNCRO R S V D B A R O S R S V D G D U V F T...

Страница 55: ...CDI Right CDI Right output 14 O Main CDI Left CDI Left output 15 O Back Course Out active low output when reverse sensing is engaged 2 8 7 2 16 O OBS_ F S4 OBS OBS Resolver input pin from channel F SI...

Страница 56: ...e bezel of the GNS 480 is used to toggle between the display of GPS and VOR ILS information on the CDI window and remote CDI The navigation source is displayed in the CDI window The navigation source...

Страница 57: ...craft power supplied to the GNS 480 Each output is capable of supplying up to 400 mA 2 8 2 5 OBS Resolver The OBS resolver input should be compatible with a standard 6 wire OBS interface any electrica...

Страница 58: ...00 load i e up to a maximum of five 1k loads connected in parallel 2 8 3 2 TO FROM Output P5 47 Aux CDI TO P5 48 Aux CDI FROM The TO FROM output provides 250 mV and is capable of driving up to a 200 l...

Страница 59: ...ding The GNS 480 accepts heading information using either a synchro input or serially using either RS 232 or ARINC 429 inputs Refer to section 2 8 10 for additional information on the serial interface...

Страница 60: ...the Main CDI and open otherwise If external annunciators are used for the GPS NAV annunciation it is recommended that the GPS annunciator is labeled GPS in white text and the NAV annunciator is label...

Страница 61: ...nciator illuminates continuously If an external annunciator is used for message annunciation it is recommended that the message annunciator be labeled MSG in white or amber text 2 8 7 8 LOI Loss of In...

Страница 62: ...the terminal mode annunciator be labeled TERM in green text 2 8 7 11 Altitude Alert Annunciation P5 69 Altitude Alert Annc The Altitude Alert Annc output is grounded when all of the following conditio...

Страница 63: ...audio tone This output is grounded 200 msec prior to playing the message tone and remains grounded for 200 msec following completion of the message tone 2 8 8 4 Power Control Out P7 36 Power Control O...

Страница 64: ...tary ground on this input performs the same function as pressing the COM flip flop soft key on the bezel 2 8 9 3 VOR Flip Flop Switch P1 34 VOR Flip Flop In The VOR Flip Flop In is used to toggle the...

Страница 65: ...t Once selected the frequency can be made active by pressing the COM Flip Flop button 2 8 9 6 Suspend Switch P5 76 Suspend In The Suspend In input suspends automatic sequencing of waypoints in the act...

Страница 66: ...o interfacing equipment The GNS 480 can communicate with an SL30 radio using RS 232 RxD1 and TxD1 This interface allows the SL30 to provide DME station information to the GNS 480 which will provide th...

Страница 67: ...e input configurations and the labels accepted by each one 1 ADC 2 AHRS 3 EFIS software version 1 3 and later 4 SKYWATCH software version 2 0 and later 5 SKYWATCN NO UI software version 2 0 and later...

Страница 68: ...and the labels output for each one 1 EFIS 429 software version 1 2 and earlier 2 ARINC 429 software version 1 3 and later 3 GAMA 429 No FP software version 1 3 and later 4 VOR ILS software version 1 3...

Страница 69: ...ommand To Autopilot 125 Greenwich Mean Time BCD 147G Magnetic Variation 150 UTC Binary 173 Localizer Deviation Note 2 174 Glideslope Deviation Note 3 204 Baro Corrected Altitude 222 VOR Omnibearing Fr...

Страница 70: ...The GNS 480 Equipment Hex ID is 002 for configurations 1 2 and 5 For configuration 4 the Hex ID is 010 when a localizer is tuned and 011 when a VOR is tuned 5 Vertical deviation and scale factor label...

Страница 71: ...The COM Headphone Out is a low level audio output that is intended to drive a headset or audio panel This output will provide 280 mW into a 100 load or 120 mW into a 500 load The COM Speaker Out is a...

Страница 72: ...essage Audio The GNS 480 provides a message audio output for aural advisory messages This output also provides an optional tone to alert the user when a new status message is available A discrete inpu...

Страница 73: ...f a localizer channel is tuned on the GNS 480 NAV receiver the bearing data is flagged as invalid 2 8 16 DME Tuning The GNS 480 can channel a DME based upon the tuned VOR frequency The GNS 480 outputs...

Страница 74: ...er in ensuring that the most optimum location is selected for the installation of the GPS antenna The installation guidelines presented here meet the intent of AC 20 138A section 16 The greater the va...

Страница 75: ...Operation and Position test in the Post Installation Checkout in section 3 3 2 1 2 Once a suitable location has been verified then permanently mount the antenna NOTE If using a GPS antenna that was a...

Страница 76: ...Installation Procedures 2 44 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Figure 2 11 GPS Antenna Installation Considerations...

Страница 77: ...pe information between 328 6 and 335 4 MHz Follow the antenna manufacturer s installation instructions for mounting antennas The NAV antenna should be mounted as far apart as practical from the ELT an...

Страница 78: ...accordance with AC 43 13 1B Chapter 11 Use the following values for computation Table 2 13 Unit Power Loads 14 VDC 28 VDC GNS 480 Input Typical Max Typical Max GNS 480 Main Power P1 connector with he...

Страница 79: ...Installation Procedures GNS 480 CNX80 Installation Manual 560 0982 01 Rev L 2 47 3 000 5 630 3 060 1 760 1 700 6 250 11 000 3 250 12 676 12 145 10 300 Figure 2 13 GNS 480 Center of Gravity...

Страница 80: ...Installation Procedures 2 48 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

Страница 81: ...steps that are not applicable to a particular installation may be skipped A checkout log sheet is included in Table 3 7 on page 3 45 to be filled out during the checkout procedure The completed check...

Страница 82: ...MENU ENTER in sequence immediately after the GNS 480 initialization is complete and before any other bezel keys on the GNS 480 are pressed Line select key 1 is the top line select key line select key...

Страница 83: ...he small inner knob in to enter the editing mode The first editable item will be highlighted Use the large outer knob to select the next or previous editable data field and turn the small inner knob t...

Страница 84: ...9600 GTX33 9600 GTX33 TIS 9600 None GTX32 9600 GTX33 9600 GTX33 TIS 9600 None 7 None COG 9600 8 Alt Enc 1200 9600 None Notes 1 MAPMX is a special format for use with the MX20 Version 5 or later or GM...

Страница 85: ...urce Destination Identifier SDI field on the EFIS ARINC 429 input can be configured as SYS 1 or SYS 2 and should be set according to which system 1 or 2 the GNS 480 is in a particular installation How...

Страница 86: ...tomatically be changed to INSTALLED 2 Press the 10 30 line select key to toggle between 10 and 30 degrees for the calibration increment NOTE An increment of 30 degrees should be acceptable for most in...

Страница 87: ...d baro corrected altitude from an FADC which may be desirable in certain installations While on the Ground Maintenance SETUP menu page press the BARO line select key Press the top line select key to t...

Страница 88: ...low the instructions on the display for calibrating the baro potentiometer If the GNS 480 will not accept the calibration when the MENU ENTER key is pressed there may be a problem with the baro potent...

Страница 89: ...cellaneous Setup Items The Misc Setup function is used to configure the unit to ignore the CDI select bezel key and CDI select discrete input refer to 2 8 9 1 While on the Ground Maintenance SETUP men...

Страница 90: ...232 output will not append the p to waypoint identifier MAPCOM RS 232 output will append the p to the parallel track Waypoint Identifiers and replace the fifth character if the Identifier is already...

Страница 91: ...1 8 GTX Transponder Setup Items The GTX Setup function is used to configure the GTX transponder if no GTX transponder is setup this menu choice will not be displayed The menu that is displayed when th...

Страница 92: ...or GTX 32 327 GTX Main Setup Page for GTX 33 330 Figure 3 12 GTX Main Setup Page 3 2 1 8 1 RS 232 While on the GTX Main Setup menu page press the RS 232 line select key to configure the GTX transponde...

Страница 93: ...n RS 232 serial port 6 3 2 1 8 2 ARINC 429 GTX 33 330 Only While on the GTX Main Setup menu page press the ARINC 429 line select key to configure the GTX transponder ARINC 429 port settings The GTX AR...

Страница 94: ...uration Setup Page Second Page GTX 33 330 only Figure 3 15 GTX Aircraft Configuration Setup Page Push the small inner knob in to enter the editing mode Use the large outer knob to select the next or p...

Страница 95: ...YES the squat sense field is used to define the state of the squat switch input which is recognized as being on the ground weight on wheels DELAY TIME This is the number of seconds the aircraft must b...

Страница 96: ...true airspeed capability SELECTION DESCRIPTION MAX AIRSPEED UNKNOWN 75 KT 150 KT 300 KT or 300 KT 3 2 1 8 4 Audio GTX 33 330 Only While on the GTX Main Setup menu page press the AUDIO line select key...

Страница 97: ...ontinuous tone is playing SELECTION DESCRIPTION VOICE MALE FEMALE Sets the voice to Male or Female default is male voice TRAFFIC ALERT TONE MESSAGE Sets the alert type to Tone or Message default is To...

Страница 98: ...s setup page is shown in Figure 3 17 Figure 3 17 GTX Diagnostics Page GILLHAM ALTITUDE If Gillham altitude is provided to the GTX transponder this field will display the value of the Gillham altitude...

Страница 99: ...Once the wiring is verified perform the System Checkout 3 3 2 3 3 1 GNS 480 Checkout Utilities 3 3 1 1 Test Function The Test function allows the checkout of the display controls and I O of the GNS 4...

Страница 100: ...3 19 Main CDI Flag Test Figure 3 20 Auxiliary CDI Flag Test When on the appropriate page turn the large outer knob to select the flag to be tested Then turn the small inner knob to change the setting...

Страница 101: ...the external CDI needle full scale left i e output set to 150 mV left CDI MID TEST drives the external CDI needle to the center i e output set to 0mV CDI RIGHT TEST drives the external CDI needle ful...

Страница 102: ...dually drives the VDI needle up and then down VDI Down Test drives the external VDI needle full scale down i e output set to 150mV down VDI Mid Test drives the external VDI needle to center i e output...

Страница 103: ...ounded and a black background indicates that the annunciator output is OFF open Details for each annunciator lamp output that can be tested are found in Table 3 5 Table 3 5 Lamp Output Test Items Disp...

Страница 104: ...PAGE line select key followed by the DISPLAY line select key to go to the Display Test page Turn the outer knob while on any Test Pattern page to display the next Test Pattern Page in the sequence Th...

Страница 105: ...ey test the results will be shown on the display If a key knob is not actuated for ten seconds 30 seconds for the first key in the test sequence the test will automatically advance to the next key kno...

Страница 106: ...Turn the small inner knob to change the value of the selected parameter The roll steering parameter can be set from 30 left to 30 right in one degree increments The ground speed can be set from 0 kts...

Страница 107: ...Press the NEXT line select key to show the next page which is shown in Figure 3 28 Figure 3 28 Interface Monitor Function Display Page 2 This page displays activity on each of the serial inputs and al...

Страница 108: ...anges from a 0 to a 1 when activated the CDI Select input will momentarily change to a T when exercised For each GNS 480 serial input that is used verify that data is being received If no data is bein...

Страница 109: ...is open 1 if input is grounded P1 34 VOR Flip Flop In P1 34 0 in input is open 1 if input is grounded P5 36 OBI Select In P5 36 0 in input is open 1 if input is grounded P5 56 RESERVED P5 56 0 in inp...

Страница 110: ...and frequency of the 26VAC 400Hz input will be displayed If this input is not connected or if the voltage is below 1VAC will be displayed 3 3 2 System Checkout Ground Checks The GNS 480 includes a sel...

Страница 111: ...n UTC time and date have been entered press the MENU ENTER key to accept the entries The Master GPS Reset must be set to No NOTE The latitude and longitude must be within one degree of the actual posi...

Страница 112: ...e SYS smart key to be displayed The SYS smart key is then pressed followed by the GPS smart key if necessary The lat long displayed on this page should agree with a known reference position Figure 3 3...

Страница 113: ...atellite vehicle number displayed in green on the left of the bar graph Ensure that NO POSITION FIX is not displayed b Press the COM bezel key and tune the GNS 480 COM to 121 125 MHz Listen on the fre...

Страница 114: ...ag operation NOTE Some VOR test equipment may not be compatible with the digital signal processing of the VHF NAV receiver and will give erroneous results Examples of equipment known to function prope...

Страница 115: ...g Manual Mag Var message and play the message tone Verify that this tone is heard over the audio system 4 If necessary adjust the Message Audio volume level as described below and replay the tone to v...

Страница 116: ...ovided to the GNS 480 press the MENU ENTER key to display the line select key functions and repeatedly press the MORE line select key until the NAV DATA line select key legend is displayed 8 Press the...

Страница 117: ...s then pressed followed by the CNFG smart key if necessary 3 3 2 4 5 Dual GNS 480 Cross Talk Checkout If two GNS 480s are installed they will share information with each other This check verifies that...

Страница 118: ...white Dual GNS 480 Installation 1 Turn on GNS 480 1 and turn off GNS 480 2 2 Verify that the transponder squawk code is displayed in white on GNS 480 1 Press the XPDR bezel key on GNS 480 1 and verify...

Страница 119: ...se the large outer knob to select MAP 2 2 Press the MENU ENTER key to display the line select key functions and repeatedly press the MORE line select key until the NAV DATA line select key legend is d...

Страница 120: ...ne select key 3 If an external RMI select switch is installed set it to the GPS position if no switch is installed the GNS 480 output automatically defaults to GPS data 4 Verify that the RMI needle sw...

Страница 121: ...sensor This check verifies that the GNS 480 is receiving data from these units Ensure that the GNS 480 and carbon monoxide sensor are turned on and in normal mode If the following steps do not perform...

Страница 122: ...rify the Morse code decoder IDs the station 95 probability 4 Fly to and from the station 5 Verify NAV flag TO FROM flag and CDI are operational 6 Record accuracy in System Log see manual 3 3 3 3 ILS F...

Страница 123: ...to be displayed 3 Verify that the database is not expired the expiration date will be displayed in green text if the database is current and yellow text if it has expired If the database card has to...

Страница 124: ...Post Installation Configuration Checkout 3 44 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This Page Intentionally Left Blank...

Страница 125: ...Hi Low Channel 1 Out ______________ N A Port 8 _____________ Hi Low Channel 2 Out Resolver Baro Correction Resolver Installed Not Installed Baro Pot Installed Not Installed N A Resolver Calibrated N A...

Страница 126: ...izer reception checked Deviation needle and flag checked INTERFACE CHECKOUT N A GNS 480 Message Audio N A SL30 NAV COM N A Altimeter Baro Correction N A Compass System Heading N A Altitude Encoder or...

Страница 127: ...ned on Noise interference from other avionics Turn all avionics off then turn on each piece one at a time to isolate the source of the interference Route GPS cable and locate GPS antenna away from sou...

Страница 128: ...turned OFF Turn message tone ON via system configuration page GNS 480 Message Audio or Tone not heard Audio inhibit line grounded Verify that inhibit input P5 77 is not grounded using Ground Maintenan...

Страница 129: ...ystem Verify that GNS 480 and compass system are using the same 26VAC reference GNS 480 baro pot input not configured correctly Check baro pot configuration in Ground Maintenance Mode GNS 480 baro pot...

Страница 130: ...proper setup on the remote device Verify the configuration of the other device Device not compatible or improper connection Verify GNS 480 Rx is connected to remote device Tx and GNS 480 Tx is connect...

Страница 131: ...ance in tracking low elevation angle satellites operational limitations may be required based upon the GPS antenna or GPS software used in the installation If the AML STC is used as the basis for appr...

Страница 132: ...selection may affect operational limitations 5 3 2 Antenna Installation General GNS 480 interfaces to GPS antennas other than those identified in this installation manual are outside the scope of this...

Страница 133: ...memory and GPS system information Regular planned replacement is not necessary The GNS 480 will display a low battery message when replacement is required Once the low battery message is displayed th...

Страница 134: ...Periodic Maintenance 6 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

Страница 135: ...Sand and Dust 12 Equipment identified as Category X no test required Fungus Resistance 13 Equipment identified as Category X no test required Salt Spray 14 Equipment identified as Category X no test...

Страница 136: ...armin AT document 560 0988 00 see STC data on the product CD for data regarding GNS 480 STC authorization This document contains information on the following items Supplementary Type Certificate STC S...

Страница 137: ...put connected N A MAPMX Proprietary interface between GNS 480 and MX20 v5 0 or later or GMX 200 This interface will support auto chart selection flight plans zoom scale matching altimeter correction a...

Страница 138: ...Figure B 1 Table B 2 Altitude Input Data Byte Data Format Description 1 ASCII 023h 2 A ASCII A 041h 3 L ASCII L 04Ch 4 ASCII space 020h 5 or Altitude sign ASCII or 02Bh or 02Dh 6 10 ddddd Altitude in...

Страница 139: ...600 baud with a message length of 17 characters as defined below RMS sp 12345T 12ul CR where RMS ASCII characters sp space 0x20 sign indicator 0x2b or 0x2d 12345 altitude in feet T ASCII character sig...

Страница 140: ...the message checksum same format as message ETX ASCII end of text character ETX 03h Table B 3 Fuel Air Data Message Data S Format Item Desig Message Format Message Mnemonic Field Width Message Descrip...

Страница 141: ...SQ000 no errors SR01227 122 7 gallons remaining S 123 Checksum example only not actual ETX end of message string Figure B 2 Fuel Air Data Input S Format B 1 2 2 Z Data Format The format of the fuel a...

Страница 142: ...is left ZK sddd VSPD 8 Vertical speed in tens of feet minute ZL ddd HEAD 7 Heading 0 to 359 degrees from true north ZM dddd RFF 8 Right Engine Fuel Flow in tenths of gallons hour ZN ddddd RFU 9 Right...

Страница 143: ...g Message Format Message Mnemonic Field Width bytes Message Description Start STX 1 Start of Transmission Units d UNIT 1 Units 4BH Kilograms 42H Pound Fuel Quantity Remaining dddd FQ 4 Fuel Quantity R...

Страница 144: ...ta B 2 1 SL70 SL70 SL70R mode control and altitude data Refer to SL70 installation manual 560 0402 xx IRDA Not currently supported N A GTX32 Proprietary interface between GNS 480 and GTX 32 327 transp...

Страница 145: ...sent longitude s sign E for east W for west ddd degrees mm minutes hh hundredths of minutes C ddd 3 Track magnetic ddd degrees D ddd 3 Ground speed ddd knots E ddddd 5 Distance to active waypoint dddd...

Страница 146: ...ving Map Binary Route Data Table B 7 Moving Map Binary Route Data Byte Data Format Description 1 w Item designator 2 3 dd Current waypoint number in ASCII 01h to 20h 4 xiannnnn Sequence number x undef...

Страница 147: ...ription 1 Z Z Item Designator 2 sddddddd List Item Number Packed unsigned binary values s 1 End of list 0 all other ddddddd 1 20 list waypoint index sddddddd 0xFF List Type is EMPTY BYTE 4 terminate I...

Страница 148: ...Example Moving Map Data Output AN 34 1570 34 15 70 latitude BW 118 4390 118 43 90 longitude C306 306 track angle D210 210 knots E02682 268 2nm to waypoint GR0006 0 6nm right of course I3059 305 9 des...

Страница 149: ...a 1 iiii ident four character ASCII Example Message PMRRC041SLE space 99 cr Output ident of SLE for the following frequency information B 2 1 4 2Frequency Data Output This message is used to output t...

Страница 150: ...haracters for the VOR station identifier followed by two characters defining the VOR frequency Message format V Message Class This is a VHF NAV message 20 Message Identifier vvvv VOR station identifie...

Страница 151: ...t of a remote localizer list associated with the airport SLE B 2 1 4 5Remote Localizer Input This output is used to provide Localizer frequency data that is used for the remote recall function The dat...

Страница 152: ...n in 1 10th of a nautical mile units The first two digits are the 10s and 1s place of the range and the last digit is the 1 10th s place This field may range in value from 0 0 NM 0000 to 999 9 NM 9999...

Страница 153: ...r 1200 baud Garmin AT SL70 SL70R RS 232 If the SL70 is provided with gray code altitude from any standard encoder the SL70 will transmit altitude data 100 ft resolution to the GNS 480 For the SL70 alt...

Страница 154: ...ices approved in accordance with 14 CFR 91 217 may be used Manufacturer Model Data Format Notes Insight TAS1000 Truflow 500 RS 232 JP Instruments FS 450 RS 232 Fuel data only JP Instruments EDM 700 80...

Страница 155: ...nimum resistance of 5 k Manufacturer Model Notes Bendix King KEA 130A KEA 346 Kollsman 44929 935 24929 519 thru 532 Aerosonic 10420 11968E United Instruments 5506 S 3 C 5 AUTOPILOTS The following auto...

Страница 156: ...7 must have software version 1 6 or higher C 8 CARBON MONOXIDE DETECTOR SYSTEMS The following carbon monoxide detector systems are compatible with the GNS 480 Manufacturer Model Interface Notes CO Gua...

Страница 157: ...iagram Figure D 7 DME Tuning Interconnect Diagram Figure D 8 S TEC Autopilot Interconnect Diagram Figure D 9 Century Autopilot Interconnect Diagram Figure D 10 Bendix King Autopilot Interconnect Diagr...

Страница 158: ...Appendix D Interconnect Diagrams D 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

Страница 159: ...E AIRCRAFT IS NOT RECOMMENDED 4 CAUTION TWO SETS OF PRIMARY POWER AND GROUND PINS ARE PROVIDED ON P1 BOTH SETS MUST BE CONNECTED TO THE AIRCRAFT POWER SOURCE TO AVOID DAMAGE TO THE UNIT 5 THE GPS ANTE...

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Страница 161: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 5 Figure D 2 Main Course Deviation Indicator Interconnect Diagram...

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Страница 163: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 7 Figure D 3 Auxiliary CDI Interconnect Diagram...

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Страница 165: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 9 Figure D 4 Baro Potentiometer Synchro Heading RMI Interconnect Diagram...

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Страница 167: ...ADDITIONAL REQUIREMENTS WHEN CONFIGURING THE GNS 480 TO PROVIDE ALTITUDE DATA TO A TRANSPONDER 04 08 03 Description Rev Date A 05 23 03 B 06 04 03 C 07 10 04 ALTITUDE ENCODER RS 232 TxD GROUND P5 30 4...

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Страница 169: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 13 Figure D 6 GNS 480 to SL10 15 Audio Panel Interconnect Diagram...

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Страница 171: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 15 Figure D 7 DME Tuning Interconnect Diagram...

Страница 172: ...Appendix D Interconnect Diagrams D 16 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This page intentionally left blank...

Страница 173: ...UT 3 17 30 31 28 32 14 13 MAIN CDI VALID MAIN CDI VALID PRECISION APPR GPS IND OUT MAIN GS UP MAIN GS DOWN MAIN CDI GS VALID MAIN CDI GS VALID MAIN CDI LEFT MAIN CDI RIGHT S TEC ST 901 GPSS CONVERTER...

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Страница 175: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 19 Figure D 9 Century Autopilot Interconnect Diagram...

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Страница 177: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 21 Figure D 10 Bendix King Autopilot Interconnect Diagram...

Страница 178: ...Appendix D Interconnect Diagrams D 22 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This page intentionally left blank...

Страница 179: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 23 Figure D 11 Single GNS 480 Full Stack Interconnect Diagram...

Страница 180: ...Appendix D Interconnect Diagrams D 24 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This page intentionally left blank...

Страница 181: ...PA MUTE OUTPUT Initial Release 03 31 03 Description Rev Date SL15 AUDIO PANEL 13 Bot NAV 2 AUDIO IN HI GNS 480 2 Nav Com 2 23 20 AUDIO GND NAV AUDIO OUT 1 3 AUDIO GROUND GNS 480 1 Nav Com 1 14 13 8 7...

Страница 182: ...Appendix D Interconnect Diagrams D 26 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This page intentionally left blank...

Страница 183: ...E SANDEL UNLESS THE GNS 480 MAIN CDI IS SELECTED TO NAV IF IT IS DESIRED TO HAVE THE GLIDESLOPE INDICATOR DISPLAYED WHENEVER A LOCALIZER IS TUNED P5 68 MUST BE DIODE OR D WITH THE ILS ENERGIZE DISCRET...

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Страница 185: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 29 Figure D 14 GNS 480 to CDI HSI Source Select Annunciators Interconnect Diagram...

Страница 186: ...Appendix D Interconnect Diagrams D 30 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This page intentionally left blank...

Страница 187: ...SANDEL UNLESS THE GNS 480 MAIN CDI IS SELECTED TO NAV IF IT IS DESIRED TO HAVE THE GLIDESLOPE INDICATOR DISPLAYED WHENEVER A LOCALIZER IS TUNED P5 68 MUST BE DIODE OR D WITH THE ILS ENERGIZE DISCRETE...

Страница 188: ...Appendix D Interconnect Diagrams D 32 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This page intentionally left blank...

Страница 189: ...OUT VOR ILS LOW SYS1 SYS2 4 SANDEL SN3500 SETUP ITEMS GPS1 2 SELECT GNS430 ARINC ANNUN SERIAL LAT DV SERIAL VERT DV SERIAL VERT ENA SERIAL ARINC 429 429 APR ACTV NONE NAV ILS DME 1 2 NAV 429 FR ENRGZ...

Страница 190: ...Appendix D Interconnect Diagrams D 34 560 0982 01 Rev L GNS 480 CNX80 Installation Manual This page intentionally left blank...

Страница 191: ...GNS 480 CNX80 Installation Manual 560 0982 01 Rev L D 35 Figure D 17 GNS 480 to GDU 620 Interconnect Diagram...

Страница 192: ...D 36 560 0982 01 Rev Notes...

Страница 193: ...led in the manufacturer s provided avionics stack External CDI HSI source selection annunciation is required The CDI HSI source select annunciation must be installed in accordance with 2 5 3 2 D55 D55...

Страница 194: ...Appendix E Acceptable Aircraft by Evaluation E 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

Страница 195: ...lamps with 14VDC lamps P N 14 113 Vivisun 95 45 11 B6 63816 Indicator Switch 28VDC Indicator with momentary switch can be converted to 14VDC operation by replacing qty 4 28VDC lamps with 14VDC lamps P...

Страница 196: ...Appendix F Optional Accessories Not Supplied F 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

Страница 197: ...ical however there is a difference in size The A33W has a larger footprint than the A 33 Prior to installation of the A33W the installer needs to ensure that the location of the installation will acce...

Страница 198: ...Appendix G Removal and Replacement Considerations G 2 560 0982 01 Rev L GNS 480 CNX80 Installation Manual Notes...

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