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Garmin GNS 480, Installation Manual

The Garmin GNS 480 is a cutting-edge avionics system designed for pilots. Explore its full capabilities and operational procedures with the comprehensive Pilot's Manual available for download, free of charge, from manualshive.com. Enhance your flight experience by accessing this invaluable manual and unlocking the full potential of your Garmin GNS 480.

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Table of Contents 

GNS 480 (CNX80) Installation Manual560-0982-01 Rev A 

 

v

 

B.1.1

 

A

LTITUDE 

E

NCODER

/C

ONVERTER 

I

NPUT

................................................................................................ B-2

 

B.1.2

 

F

UEL

/A

IR 

D

ATA 

C

OMPUTER 

I

NPUT

......................................................................................................... B-4

 

B.2

 

S

ERIAL 

O

UTPUT 

S

PECIFICATIONS

................................................................................................................. B-7

 

B.2.1

 

M

APCOM 

O

UTPUT

................................................................................................................................... B-7

 

APPENDIX C

 

-

 

E

QUIPMENT 

C

OMPATIBILITY

....................................................................................................... C-1

 

C.1

 

A

LTITUDE 

S

OURCES

..................................................................................................................................... C-1

 

C.2

 

F

UEL

/A

IR 

D

ATA 

C

OMPUTERS

...................................................................................................................... C-1

 

C.3

 

H

EADING 

S

OURCES

...................................................................................................................................... C-2

 

C.4

 

A

LTIMETERS FOR 

B

ARO 

C

ORRECTION

......................................................................................................... C-2

 

C.5

 

A

UTOPILOTS

................................................................................................................................................ C-2

 

C.6

 

E

LECTRONIC 

HSI’

S

...................................................................................................................................... C-3

 

C.7

 

T

RAFFIC 

A

DVISORY 

S

YSTEMS

...................................................................................................................... C-3

 

APPENDIX D

 

-

 

I

NTERCONNECT 

D

IAGRAMS

.......................................................................................................... D-1

 

APPENDIX E

 

-

 

A

CCEPTABLE 

A

IRCRAFT BY 

E

VALUATION

................................................................................... E-1

 

APPENDIX F

 

–

 

O

PTIONAL 

A

CCESSORIES NOT 

S

UPPLIED

......................................................................................F-1

 

F.1

 

CDI/HSI

 

S

OURCE 

S

ELECTION 

A

NNUNCIATORS

.............................................................................................F-1

 

 

L

IST OF 

T

ABLES

 

T

ABLE 

1-1

  

-

 

TSO

 

A

UTHORIZATION

......................................................................................................... 1-15

 

T

ABLE 

1-2

  

-

 

JTSO

 

A

UTHORIZATION

....................................................................................................... 1-15

 

T

ABLE 

1-3

 

-

 

P

ACKAGE 

C

ONTENTS

........................................................................................................... 1-17

 

T

ABLE 

1-4

 

-

 

I

NSTALLATION 

K

IT 

C

ONTENTS 

(PN

 

424-2014-800)............................................................. 1-17

 

T

ABLE 

1-5

 

–

 

H

ARDWARE 

K

IT 

C

ONTENTS 

(P/N

 

424-2016-000) ............................................................... 1-18

 

T

ABLE 

1-6

 

-

 

O

PTIONAL 

E

QUIPMENT 

A

VAILABLE FROM 

G

ARMIN 

AT...................................................... 1-18

 

T

ABLE 

2-1

 

-

 

C

RIMP 

T

OOL FOR 

P/N

 

162-0082 ............................................................................................ 2-2

 

T

ABLE 

2-2

 

-

 

C

RIMP 

T

OOL FOR 

P/N

 

245-0027 ............................................................................................ 2-2

 

T

ABLE 

2-3

 

-

 

I

NTERFACE 

C

ONNECTORS

.................................................................................................... 2-15

 

T

ABLE 

2-4

 

-

 

C

RIMP 

C

ONTACT 

S

PECIFICATIONS

....................................................................................... 2-15

 

T

ABLE 

2-5

  

M

AIN 

S

YSTEM 

C

ONNECTOR 

P

IN

-O

UT 

(P1) ........................................................................... 2-17

 

T

ABLE 

2-6

  

COM

 

I/O

 

C

ONNECTOR 

P

IN

-O

UT 

(P4).................................................................................... 2-18

 

T

ABLE 

2-7

  

I/O

 

E

XPANSION 

C

ONNECTOR 

P

IN

-O

UT 

(P5).......................................................................... 2-19

 

T

ABLE 

2-8

  

NAV

 

I/O

 

C

ONNECTOR 

P

IN

-O

UT 

(P7) .................................................................................... 2-22

 

T

ABLE 

2-9

 

-

 

ARINC

 

429

 

I

NPUT 

L

ABELS

.................................................................................................. 2-34

 

T

ABLE 

2-10

  

-

 

ARINC

 

429

 

O

UTPUT 

L

ABELS

............................................................................................ 2-35

 

T

ABLE 

2-10A11

  

-

 

ARINC

 

429

 

O

UTPUT 

L

ABELS 

–

 

C

ONFIGURATION 

5

 

(ARINC

 

743A).......................... 2-37

 

T

ABLE 

2-12

  

-

 

U

NIT 

W

EIGHTS

.................................................................................................................. 2-43

 

T

ABLE 

2-13

  

-

 

U

NIT 

P

OWER 

L

OADS

.......................................................................................................... 2-43

 

T

ABLE 

3-1

 

-

 

S

ERIAL 

P

ORT 

S

ETUP 

C

ONFIGURATIONS

................................................................................. 3-3

 

T

ABLE 

3-2

 

-

 

ARINC

 

429

 

I

NPUT AND 

O

UTPUT 

P

ORT 

S

ETTINGS

.................................................................. 3-4

 

T

ABLE 

3-3

 

–

 

GTX

 

RS-232

 

S

ERIAL 

P

ORT 

S

ETTINGS

................................................................................. 3-12

 

T

ABLE 

3-4

 

–

 

GTX

 

ARINC

 

429

 

I

NPUT AND 

O

UTPUT 

P

ORT 

S

ETTINGS

...................................................... 3-13

 

T

ABLE 

3-5

 

–

 

L

AMP 

O

UTPUT 

T

EST 

I

TEMS

................................................................................................. 3-23

 

T

ABLE 

3-6

 

–

 

D

ESCRIPTION OF 

I

NPUT 

M

ONITOR 

I

TEMS

............................................................................ 3-29

 

T

ABLE 

3-7

 

-

 

GNS

 

480

 

P

OST

-I

NSTALLATION 

C

HECKOUT 

L

OG

.................................................................. 3-43

 

T

ABLE 

4-1.

 

T

ROUBLESHOOTING 

G

UIDE

..................................................................................................... 4-1

 

 
T

ABLE 

B-

 

1

  

-

 

RS-232

 

S

ERIAL 

I

NPUT 

(RX)

 

S

ELECTIONS

........................................................................... B-1

 

T

ABLE 

B-

 

2

  

-

 

A

LTITUDE 

I

NPUT 

D

ATA

....................................................................................................... B-2

 

T

ABLE 

B-

 

3

  

-

 

F

UEL

/A

IR 

D

ATA 

M

ESSAGE 

D

ATA 

(S

 

F

ORMAT

)................................................................... B-4

 

T

ABLE 

B-

 

4

  

-

 

F

UEL

/A

IR 

D

ATA 

M

ESSAGE 

D

ATA 

(Z

 

F

ORMAT

) .................................................................. B-6

 

Summary of Contents for GNS 480

Page 1: ...GNS 480 CNX80 Color GPS Nav Com Installation Manual September 2004 560 0982 01 Rev A...

Page 2: ...ed transmitted 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 thi...

Page 3: ...RMATION To receive additional copies of GNS 480 publications order the following part numbers GNS 480 Installation Manual 560 0982 xx GNS 480 Pilot Guide 560 0984 xx GNS 480 Reference Guide 560 0989 x...

Page 4: ...01 1 7 01 2 26 01 3 23 01 B 3 01 D 24 01 1 8 01 2 27 01 3 24 01 B 4 01 D 25 01 1 9 01 2 28 01 3 25 01 B 5 01 D 26 01 1 10 01 2 29 01 3 26 01 B 6 01 D 27 01 1 11 01 2 30 01 3 27 01 B 7 01 D 28 01 1 12...

Page 5: ...1 4 4 GNS 480 STC AUTHORIZATION 1 15 1 5 DATABASE UPDATES 1 15 1 6 UNPACKING THE EQUIPMENT 1 16 1 7 PACKAGE CONTENTS 1 17 1 8 LICENSE REQUIREMENTS 1 18 1 9 DEFINITIONS ACRONYMS 1 19 2 INSTALLATION 2...

Page 6: ...CK 3 1 3 2 EQUIPMENT SETUP AND CONFIGURATION 3 1 3 2 1 SETUP FUNCTION 3 2 3 3 EQUIPMENT OPERATIONAL FUNCTIONAL TEST 3 19 3 3 1 GNS 480 CHECKOUT UTILITIES 3 19 3 3 2 SYSTEM CHECKOUT GROUND CHECKS 3 30...

Page 7: ...1 CRIMP TOOL FOR P N 162 0082 2 2 TABLE 2 2 CRIMP TOOL FOR P N 245 0027 2 2 TABLE 2 3 INTERFACE CONNECTORS 2 15 TABLE 2 4 CRIMP CONTACT SPECIFICATIONS 2 15 TABLE 2 5 MAIN SYSTEM CONNECTOR PIN OUT P1...

Page 8: ...2 FIGURE 3 2 SERIAL PORT SETUP PAGE 3 2 FIGURE 3 3 ARINC 429 PORTS SETUP PAGE 3 4 FIGURE 3 4 RESOLVER INTERFACE SETUP PAGE 3 5 FIGURE 3 5 RESOLVER CALIBRATION PAGE 3 6 FIGURE 3 6 ALTIMETER INTERFACE...

Page 9: ...D 9 FIGURE D 5 RS232 SERIAL INTERFACES INTERCONNECT DIAGRAM D 11 FIGURE D 6 GNS 480 TO SL10 15 AUDIO PANEL INTERCONNECT DIAGRAM D 13 FIGURE D 7 DME TUNING INTERCONNECT DIAGRAM D 15 FIGURE D 8 S TEC AU...

Page 10: ...Table of Contents viii 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

Page 11: ...information Includes INTERCONNECT DIAGRAMS Provides a listing of ACCEPTABLE AIRCRAFT BY EVALUATION for those aircraft that have been evaluated by the FAA Provides a listing of OPTIONAL ACCESSORIES NO...

Page 12: ...PS 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 fas...

Page 13: ...CES The interfaces for a typical single GNS 480 avionics stack are shown in Figure 1 2 while the interfaces for a typical dual GNS 480 avionics stack are shown in Figure 1 3 The available interfaces a...

Page 14: ...on VHF Nav or GPS data The GNS 480 also accepts a resolver input from this CDI The GNS 480 is capable of driving a second external CDI with information based upon GPS data 1 2 2 2 Composite Indicator...

Page 15: ...the standard Garmin AT MAPCOM data 1 2 2 7 RS422 Interfaces The GNS 480 has one user configurable bi directional RS422 port This port is not currently used 1 2 2 8 ARINC 429 Interfaces The GNS 480 has...

Page 16: ...0 mA typical 175 mA max at 28 VDC receive 2 1 A typical 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...

Page 17: ...r to a value 0 2 fL 1 3 5 GPS WAAS RECEIVER PERFORMANCE TSO JTSO Compliance TSO C146a RTCA DO 229C JTSO C146 Number of channels 15 12 GPS and 3 GPS WAAS SBAS Frequency 1575 42 MHz L1 C A code Sensitiv...

Page 18: ...3 7 COMM TRANSMITTER PERFORMANCE TSO JTSO Compliance TSO C37d RTCA DO 186 DO 186a JTSO 2C37e TSO C128 RTCA DO 207 JTSO 2C128 Class 4 Output power 8 watts minimum carrier at 12 VDC input 6 watts minimu...

Page 19: ...shall not be less than15 dB Audio response Less than 6 dB variation from 350 Hz to 2500 Hz 1 3 8 2 Localizer TSO JTSO compliance TSO C36e RTCA DO 195 JTSO C36e Operational class A manual landing syst...

Page 20: ...ation 150 mv full scale 200 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...

Page 21: ...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 LOC...

Page 22: ...575 MHz Polarization Right Hand Circular Axial Ratio 3 dB Max at bore site Radiation Coverage Elevation Angle Minimum Gain 15 2 0 dBic 10 3 0 dBic 5 4 5 dBic 0 7 5 dBic Finish Polyurethane Enamel Weig...

Page 23: ...t Hand Circular Axial Ratio 3 dB Max at bore site Radiation Coverage Elevation Angle Minimum Gain 15 2 0 dBic 10 3 0 dBic 5 4 5 dBic 0 7 5 dBic Finish Polyurethane Enamel Weight 7 0 oz 0 2 kg Height 0...

Page 24: ...f 108 112 Megahertz MHz TSO C37d JTSO 2C37e VHF Radio Communications Receiving Equipment Operating Within the Radio Frequency Range 117 975 to 137 000 Megahertz TSO C38d JTSO 2C38e Class D VHF Radio C...

Page 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...

Page 26: ...by purchasing database subscription updates from Jeppesen Sanderson The database card is programmed using the supplied CompactFlash memory card R W and Jeppesen provided software Contact Jeppesen at...

Page 27: ...n Guide and other pilot related items 140 0060 xxx 1 GNS 480 MX20 In Flight Demo DVD 140 0061 xxx 1 GNS 480 Promotional CD 424 2014 8xx 1 GNS 480 Installation Kit see Table 1 4 for detail 424 2016 xxx...

Page 28: ...X 075 Note Hardware Kit items may optionally be provided loose as part of the Installation Kit Table 1 6 Optional Equipment Available from Garmin AT Item Description 115 0007 Splitter 2 way 50 BNC NAV...

Page 29: ...Augmentation System LCD Liquid Crystal Display LNAV Lateral Navigation LOC Localizer MFD Multi Function Display NAV VHF Navigation NDB Non Directional Beacon OBS Omni Bearing Selector PDA Personal Di...

Page 30: ...General Information 1 20 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

Page 31: ...FAA Form 337 The WAAS GPS installation instructions have been prepared to meet the guidance material defined in AC20 138A Final Draft Airworthiness Approval of Global Navigation Satellite System GNSS...

Page 32: ...612 2 5 INSTALLATION CONSIDERATIONS Installation 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 operat...

Page 33: ...source selection annunciator is required To take full advantage of the GNS 480 capabilities an optional altitude source is recommended for automatic sequencing of course to altitude CA and heading to...

Page 34: ...as follows from highest to lowest 1 ARINC 429 ADC 2 FADC 3 RS232 Altitude Encoder NOTE Although the GNS 480 can be configured to accept data from an RS232 altitude encoder on different ports the GNS 4...

Page 35: ...e 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 shield on top...

Page 36: ...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...

Page 37: ...YPE CERTIFICATED CDI OR HSI LOCATION IS BELOW THE BASIC T THE LOWER LIMIT OF THE ACCEPTABLE FIELD OF VIEW SHOULD BE IN LINE WITH THE BOTTOM OF THE CDI OR HSI 3 FOR AIRCRAFT WITHOUT THE BASIC INSTRUMEN...

Page 38: ...onnector Route the wiring bundle as appropriate Use 22 to 24 AWG wire for all connections except for power Use 20 AWG for power ground Avoid sharp bends 2 5 5 AIR CIRCULATION AND COOLING The GNS 480 h...

Page 39: ...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 with the inside surfac...

Page 40: ...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...

Page 41: ...Installation Procedures GNS 480 CNX80 Installation Manual560 0982 01 Rev A 2 11 Figure 2 3 GNS 480 Dimensions...

Page 42: ...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...

Page 43: ...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...

Page 44: ...Installation Procedures 2 14 560 0982 01 Rev A GNS 480 CNX80 Installation Manual Figure 2 6 Mounting Frame Assembly...

Page 45: ...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...

Page 46: ...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...

Page 47: ...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 Mark O...

Page 48: ...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...

Page 49: ...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 RS232 TxD5 RS232 c...

Page 50: ...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...

Page 51: ...E 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...

Page 52: ...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...

Page 53: ...and vertical deviation from selected course lateral and vertical flags and superflags and TO FROM indications The CDI key on the bezel of the GNS 480 is used to toggle between the display of GPS and V...

Page 54: ...Each flag output provides 300 mV when valid information is present and is capable of driving up to a 200 load i e up to a maximum of five 1k loads connected in parallel 2 8 2 4 Superflags P7 9 Main G...

Page 55: ...etween GPS and VOR ILS it is not necessary to use these outputs to drive an indicator It is only necessary if it is desired to have a separate indicator display GPS deviation information full time Thi...

Page 56: ...0 for additional information on the serial interfaces In addition the GNS 480 can accept the baro correction using the potentiometer output from a suitable altimeter If baro correction and uncorrected...

Page 57: ...ions available on the front of the GNS 480 These can be used to drive annunciator lamps to make the annunciation available remotely such as in the pilot s primary field of view All of these outputs ar...

Page 58: ...green text 2 8 7 5 Parallel Track Annunciation P5 62 Parallel Track Annc The Parallel Track Annc output is grounded whenever the parallel track mode has been selected If an external annunciator is use...

Page 59: ...the next leg the waypoint annunciator will extinguish If an external annunciator is used for waypoint annunciation it is recommended that the waypoint annunciator be labeled WPT in white text 2 8 7 1...

Page 60: ...input of an autopilot or flight director to provide higher autopilot gain when the GNS 480 is operating in precision approach mode 2 8 8 3 Audio Message Active Out P5 70 Audio Msg Active Out The Audi...

Page 61: ...input performs the same function as pressing the CDI key on the GNS 480 bezel NOTE If the GNS 480 is setup to IGNORE the CDI select key and discrete input refer to 3 2 1 6 this input will not be funct...

Page 62: ...ressing the SUSP key on the GNS 480 bezel 2 8 9 7 Audio Inhibit In P5 77 Audio Inhibit In The Audio Inhibit In is used to inhibit the GNS 480 audio messages A ground on this input causes GNS 480 audio...

Page 63: ...llowing these lines to be used for communication with other devices The GNS 480 can receive air data and fuel data from certain systems on RS232 RxD5 although it is recommended that if a dedicated alt...

Page 64: ...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 NOTE Not all configurations are available for each input channel...

Page 65: ...2 0 and later NOTE The GAMA 429 No FP configuration does not contain flight plan information Table 2 10 ARINC 429 Output Labels Label No Parameter Name 1 2 3 4 001 Distance To Go BCD 002 Time To Go BC...

Page 66: ...Vertical Scale Factor Note 5 351G Distance To Destination Via Flight Plan 352G Estimated Time To Destination Via Flight Plan 371G Specific Equipment ID Note 4 377 Equipment Hex ID Code Note 4 Notes 1...

Page 67: ...Height HAE 377 Equipment Hex ID Code 0Bh Refer to section 3 2 1 2 for information on configuring the ARINC 429 outputs 2 8 11 TIME MARK OUTPUT P1 17 Time Mark Out P1 19 Time Mark Out The Time Mark Out...

Page 68: ...igned for a standard carbon or dynamic mic with integrated pre amp providing minimum 70 mv rms into 1000 load The GNS 480 provides a bias voltage to the microphone 2 8 12 3 Push to Talk PTT P4 4 PTT T...

Page 69: ...io messages to be inhibited by higher priority systems Refer to Appendix D for interconnect information 2 8 14 1 Message Audio Out P5 40 Message Audio Out P5 43 Message Audio Gnd The Message Audio Out...

Page 70: ...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...

Page 71: ...hes from other antennas emitting less than 25 watts and two feet from higher power antennas See A 33 GPS Antenna Installation Manual p n 560 0949 xx for more information on GPS antenna installation Sp...

Page 72: ...notch filter may be installed in series with the antenna coax of the VHF comm transceiver to reduce or eliminate the harmonic interference A notch filter for this use part 162 1059 is available from G...

Page 73: ...tallation of the GNS 480 Follow the guidelines as established in AC 43 13 1B Chapter 10 section 2 Make appropriate entries in the equipment list indicating items added removed or relocated along with...

Page 74: ...0 CNX80 Installation Manual NOTE Circuits should be protected in accordance with guidelines in AC 43 13 1B chapter 11 section 2 paragraph 429 Power inputs should be across a minimum of all four specif...

Page 75: ...interference 3 2 EQUIPMENT SETUP AND CONFIGURATION Prior to system operation the GNS 480 must be configured for the particular installation using the setup functions provided The system setup and chec...

Page 76: ...the SERIAL PORTS line select key to change the serial port settings The serial port setup page is shown in Figure 3 2 Figure 3 2 Serial Port Setup Page Push the small inner knob in to enter the editi...

Page 77: ...M 9600 CROSSFILL 38400 None CROSSFILL 38400 None 3 2 IrDA 9600 115200 IrDA 9600 115200 None None 4 None None 5 SL30 9600 MAPCOM 9600 Alt Enc 1200 9600 FADC 9600 None MAPCOM 9600 None 6 4 SL70 9600 SL7...

Page 78: ...ilable configuration is found in section 2 8 10 2 The Source 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 syste...

Page 79: ...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...

Page 80: ...n and 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...

Page 81: ...ow 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 potenti...

Page 82: ...ain value the Mic Gain value is restricted to a number from 0 to 255 When the desired value is selected press the MENU ENTER key or the SAVE MIC GAIN line select key to save the setting Figure 3 8 Com...

Page 83: ...tical Offset setup function is used to enter the height above ground of the GPS antenna Prior to proceeding measure the GPS antenna vertical offset to the nearest foot as shown in Figure 3 10 Figure 3...

Page 84: ...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...

Page 85: ...Post Installation Configuration Checkout GNS 480 CNX80 Installation Manual560 0982 01 Rev A 3 11 GTX Main Setup Page for GTX 32 327 GTX Main Setup Page for GTX 33 330 Figure 3 12 GTX Main Setup Page...

Page 86: ...ording to the installation and leave unused ports set to NONE Either press the small inner knob again or press the MENU ENTER key to save the settings Press the BACK smart key to return to the GTX Mai...

Page 87: ...setting Set each serial port according to the installation and leave unused ports set to NONE Either press the small inner knob again or press the MENU ENTER key to save the settings Press the BACK sm...

Page 88: ...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...

Page 89: ...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...

Page 90: ...unknown airspeed depending on the type of aircraft Defaults to less than or equal to 150 knots Enter the aircraft s maximum cruising true airspeed capability SELECTION DESCRIPTION MAX AIRSPEED UNKNOW...

Page 91: ...sage 0 must be stopped by pressing the PLAY softkey while the tone is playing None of the other messages will be available while the continuous tone is playing SELECTION DESCRIPTION VOICE MALE FEMALE...

Page 92: ...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...

Page 93: ...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 48...

Page 94: ...press the FLAGS line select key to display the FLAG test page Press the SELECT line select key to toggle between MAIN and AUX CDI flag tests as shown in Figure 3 19 and Figure 3 20 respectively Figur...

Page 95: ...eviation test The test is initiated as soon as it is selected There are five CDI tests in the following order CDI TRIANGLE TEST gradually drives the CDI needle left and then right CDI LEFT TEST drives...

Page 96: ...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...

Page 97: ...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...

Page 98: ...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...

Page 99: ...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...

Page 100: ...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...

Page 101: ...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...

Page 102: ...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...

Page 103: ...input is grounded P5 76 Suspend In P5 76 0 in input is open 1 if input is grounded P5 77 Audio Inhibit In P5 77 0 in input is open 1 if input is grounded P5 78 RESERVED P5 78 0 in input is open 1 if i...

Page 104: ...it will be saved and updated automatically so it will not be necessary to re enter the information at every start up If the GNS 480 is moved a great distance without being turned on the seed position...

Page 105: ...y to accept the changes and then press the MENU ENTER key again to acknowledge the STOP message NOTE GPS acquisition may take up to 20 minutes after a Master GPS Reset is performed 3 3 2 1 2 GPS Opera...

Page 106: ...ignal status of each satellite being received If the satellite signals are significantly degraded or some satellite signals are lost during the test continue transmitting for another 15 seconds Verify...

Page 107: ...d Collins 479S 6 3 3 2 3 VHF Com Checkout 3 3 2 3 1 Antenna Check If desired the antenna VSWR can be checked using an inline wattmeter in the antenna coax using frequencies near both ends of the band...

Page 108: ...eatedly until the SYS smart key is displayed The SYS smart key is then pressed followed by the CNFG smart key if necessary 2 While on the System Configuration page rotate the large outer knob to scrol...

Page 109: ...should be within 0 03 Hg 1 mB of the altimeter setting 3 3 2 4 3 Air Data Computer Altitude Encoder and Fuel Air Data Computer The GNS 480 can receive altitude or fuel air data from an external sourc...

Page 110: ...k the System Info page on the MX20 to verify that the data is available to each port and that it is being processed properly 2 Load a flight plan into the GNS 480 and verify that the flight plan is di...

Page 111: ...p Single GNS 480 Installation 1 Verify that the transponder squawk code is displayed in white Press the XPDR bezel key and verify that you are able to change the transponder squawk code on the GNS 480...

Page 112: ...onnections and configuration setup 1 Operate the SL30 in NAV mode 2 Press the SL30 SEL button to bring up the NAV frequency recall lists 3 Turn the SL30 large knob clockwise until the nearest VOR list...

Page 113: ...f necessary the ground speed can be adjusted using the small inner knob and then pressing the MENU ENTER key to acknowledge the entry CAUTION When the autopilot is engaged flight control surface movem...

Page 114: ...The TFC smart key is then pressed to display the traffic page 2 Verify that Data Fail is not displayed and the Skywatch operating mode is displayed in the upper right hand corner NOTE The following s...

Page 115: ...ion at a range of at least 50nm while maintaining an appropriate altitude and over all normal flight attitudes Performance should be checked using low high and mid band frequencies 3 3 3 2 VOR Flight...

Page 116: ...p sequence 2 Wait for the database page 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 h...

Page 117: ...tput Configuration ______________ N A Port 7 _____________ Hi Low Channel 1 Out ______________ N A Port 8 _____________ Hi Low Channel 2 Out Resolver Baro Correction Resolver Installed Not Installed B...

Page 118: ...reception checked Sidetone level set checked Localizer 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...

Page 119: ...n 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 sources...

Page 120: ...crease AMA volume level AMA adjustment is found under the AUDIO menu in the COM function Turn message tone ON via system configuration page Verify that inhibit input P5 77 is not grounded using Ground...

Page 121: ...0 is not receiving baro correction setting from altimeter GNS 480 baro pot input not configured correctly GNS 480 baro pot input not calibrated GNS 480 is not the only device tied to the altimeter bar...

Page 122: ...onnected together not applicable to dual GNS 480 s controlling the SL70 Check RS232 port setting for port that device is connected to Verify the configuration of the other device Verify GNS 480 Rx is...

Page 123: ...t aircraft Additional operation approvals may require FAA evaluation of all the systems installed in a particular aircraft and is outside the scope of the GNS 480 STC 5 2 INSTALLATION The conditions a...

Page 124: ...nal design This includes the preservation of multiple power buses which reduce the probability of interrupting power to essential instruments and avionics For Aircraft on the AML certified under 14 CF...

Page 125: ...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...

Page 126: ...Periodic Maintenance 6 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

Page 127: ...roofness 10 Equipment identified as Category X no test required Fluids Susceptibility 11 Equipment identified as Category X no test required Sand and Dust 12 Equipment identified as Category X no test...

Page 128: ...DATA Refer to Garmin AT document 560 0988 00 for data regarding GNS 480 STC authorization This document contains information on the following items Supplementary Type Certificate STC STC Permission ST...

Page 129: ...E No input connected N A MAPMX Proprietary interface between GNS 480 and MX20 v5 0 or later This interface will support auto chart selection flight plans zoom scale matching altimeter correction and I...

Page 130: ...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...

Page 131: ...9600 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 s...

Page 132: ...e following table s a sign indicator E W d a decimal digit 0 9 checksum the message checksum same format as message ETX ASCII end of text character ETX 03h Table B 3 Fuel Air Data Message Data S Forma...

Page 133: ...uded in Table B 4 Baud rate 9600 Data bits 8 Stop bits 1 Parity none Expected input rate approx 1 second Message length variable 512 character max Example Fuel Airdata Input Data STX SA223 223 knots i...

Page 134: ...T 7 True Air Temp or Static in degrees Celsius ZH ddd WDIR 7 Wind Direction 0 to 359 degrees from true north ZI ddd WSPD 7 Wind Speed in knots ZJ sdd TURN 7 Rate of Turn in degrees second is right is...

Page 135: ...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 transponder...

Page 136: ...resent 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 dd...

Page 137: ...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...

Page 138: ...ues s 1 End of list 0 all other ddddddd 1 20 list waypoint index sddddddd 0xFF List Type is EMPTY BYTE 4 terminate Item 3 t Waypoint Type t a airport v VOR n NDB i INT u USER 4 Cr r Item Terminator 0x...

Page 139: ...sing the following format PMRRC msg_id msg_data chksum cr 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...

Page 140: ...o output the airport frequency information for the previously output ident Message Format PMRRC05tfmk chksum cr 05 message id t list type input 1 f frequency type 0 TWR tower frequency 8 CTF common tr...

Page 141: ...the station identifier is less than four characters then the trailing characters will be filled with spaces Station Identifiers are restricted to using ASCII characters 0 9 and A Z mk Frequency m MHz...

Page 142: ...aracters to identify the runway associated with the localizer followed by two characters defining the frequency Message format V Message Class This is a VHF NAV message 23 Message Identifier iiii Stat...

Page 143: ...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 If the distance from the DME station is greater than 999 9NM...

Page 144: ...Appendix B Serial Interface Specifications B 16 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

Page 145: ...ny standard encoder the GTX 33 330 will transmit altitude data 100 ft resolution to the GNS 480 For the GTX 33 330 altitude data is provided to the GNS 480 on serial port 6 configured for GTX33 OR GTX...

Page 146: ...GNS 480 Other altimeters may be used to provide baro correction to the GNS 480 provided they have a potentiometer with a minimum resistance of 5 k Manufacturer Model Notes Bendix King KEA 130A KEA 34...

Page 147: ...terface Notes Sandel Avionics SN3308 Analog deviation and RS232 Low speed C 7 TRAFFIC ADVISORY SYSTEMS The following traffic advisory systems are compatible with the GNS 480 Manufacturer Model Interfa...

Page 148: ...Appendix C Equipment Compatibility C 4 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

Page 149: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 1 APPENDIX D INTERCONNECT DIAGRAMS...

Page 150: ...Appendix D Interconnect Diagrams D 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

Page 151: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 3 Figure D 1 Main Power and Antenna Interconnect Diagram...

Page 152: ...Appendix D Interconnect Diagrams D 4 560 0982 01 Rev A GNS 480 CNX80 Installation Manual This page intentionally left blank...

Page 153: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 5 Figure D 2 Main Course Deviation Indicator Interconnect Diagram...

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Page 155: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 7 Figure D 3 Auxiliary CDI Interconnect Diagram...

Page 156: ...Appendix D Interconnect Diagrams D 8 560 0982 01 Rev A GNS 480 CNX80 Installation Manual This page intentionally left blank...

Page 157: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 9 Figure D 4 Baro Potentiometer Syncrho Heading RMI Interconnect Diagram...

Page 158: ...Appendix D Interconnect Diagrams D 10 560 0982 01 Rev A GNS 480 CNX80 Installation Manual This page intentionally left blank...

Page 159: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 11 Figure D 5 RS232 Serial Interfaces Interconnect Diagram...

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Page 161: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 13 Figure D 6 GNS 480 to SL10 15 Audio Panel Interconnect Diagram...

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Page 163: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 15 Figure D 7 DME Tuning Interconnect Diagram...

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Page 165: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 17 Figure D 8 S TEC Autopilot Interconnect Diagram...

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Page 167: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 19 Figure D 9 Century Autopilot Interconnect Diagram...

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Page 169: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 21 Figure D 10 Bendix King Autopilot Interconnect Diagram...

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Page 171: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 23 Figure D 11 Single GNS 480 Full Stack Interconnect Diagram...

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Page 173: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 25 Figure D 12 Full Stack with Dual GNS 480 s Interconnect Diagram...

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Page 175: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 27 Figure D 13 GNS 480 to Sandel SN3308 Nav Display Interconnect Diagram...

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Page 177: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 29 Figure D 14 GNS 480 to CDI HSI Source Select Annunciators Interconnect Diagram...

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Page 179: ...Appendix D Interconnect Diagrams GNS 480 CNX80 Installation Manual 560 0982 01 Rev A D 31 Figure D 15 GNS 480 to Traffic System and Transponder Interconnect Diagram...

Page 180: ...Appendix D Interconnect Diagrams D 32 560 0982 01 Rev A GNS 480 CNX80 Installation Manual This page intentionally left blank...

Page 181: ...ed 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 D55A...

Page 182: ...Appendix E Acceptable Aircraft by Evaluation E 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

Page 183: ...amps 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...

Page 184: ...Appendix F Optional Accessories Not Supplied F 2 560 0982 01 Rev A GNS 480 CNX80 Installation Manual NOTES...

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