Garmin GNC 420A Installation Manual
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Garmin GNC 420A Installation Manual

Garmin GNC 420A Installation Manual

400 series
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400 SERIES

INSTALLATION MANUAL

GPS 400, GNC
420 (A), and GNS
430 (A)
TM
TM
GNC and GNS are trademarks of Garmin Ltd. or its subsidiaries
and may not be used without the express permission of Garmin.
(GNS 430 Shown)
Garmin International, Inc.
st
1200 E. 151
Street
Olathe, KS 66062 USA
190-00140-02, Revision L
December 2002

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  • Page 1: Installation Manual

    INSTALLATION MANUAL GPS 400, GNC 420 (A), and GNS 430 (A) GNC and GNS are trademarks of Garmin Ltd. or its subsidiaries and may not be used without the express permission of Garmin. (GNS 430 Shown) Garmin International, Inc. 1200 E. 151...
  • Page 2 Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision...
  • Page 3 This manual is written for software version 3.00, and is not suitable for earlier software versions. Information in this document is subject to change without notice. Visit the Garmin web site (www.garmin.com) for current updates and supplemental information concerning the operation of this and other Garmin products.

  • Page 4: Table Of Contents

    A.1 CONTINUED AIRWORTHINESS ......................A-1 A.2 ENVIRONMENTAL QUALIFICATION FORM—GNS 430..............A-3 A.3 ENVIRONMENTAL QUALIFICATION FORM—GNC 420 ..............A-4 A.4 ENVIRONMENTAL QUALIFICATION FORM—GPS 400 ..............A-5 A.5 ENVIRONMENTAL QUALIFICATION FORM—GA 56................A-6 Appendix B. STC PERMISSION ..........................B-1 Appendix C. 400 SERIES RS-232 AVIATION DATA FORMAT ................C-1 Appendix D.

  • Page 5: List Of Figures

    FIGURE 3-5. GPS 400 MOUNTING RACK DIMENSIONS..................3-15 FIGURE 3-6. GNS 430 MOUNTING RACK INSTALLATION................3-17 FIGURE 3-7. GNC 420 MOUNTING RACK INSTALLATION ................3-19 FIGURE 3-8. GPS 400 MOUNTING RACK INSTALLATION ................3-21 FIGURE 3-9. 400 SERIES RECOMMENDED PANEL CUTOUT DIMENSIONS..........3-23 FIGURE 4-1. 400 SERIES SYSTEM INTERFACE DIAGRAM ................4-21 FIGURE 4-2.
  • Page 6 LIST OF FIGURES - CONTINUED FIGURE 5-1. MAIN ARINC 429 CONFIG PAGE ....................5-1 FIGURE 5-2. MAIN RS232 CONFIG PAGE ......................5-3 FIGURE 5-3. MAIN INPUTS 1 PAGE ........................5-4 FIGURE 5-4. MAIN INPUTS 2 PAGE ........................5-4 FIGURE 5-5. INSTRUMENT PANEL SELF TEST PAGE ..................5-5 FIGURE 5-6.
  • Page 7 400 SERIES HARDWARE MOD LEVEL HISTORY The following table identifies hardware modification (Mod) Levels for the GPS 400, GNC 420 and GNS 430. Mod Levels are listed with the associated service bulletin number, service bulletin date, and the purpose of the modification. The table is current at the time of publication of this manual (see date on front cover) and is subject to change without notice.
  • Page 8 This page intentionally left blank Page vi 400 SERIES INSTALLATION MANUAL Page Rev L P/N 190-00140-02...

  • Page 9: General Description

    The GPS 400 is a GPS receiver certifiable for IFR en route, terminal, and non-precision approach operations. The GNC 420/ (A) includes all the features of the GPS 400, and also includes an IFR certified airborne VHF communications transceiver. The (A) model is a 28 Vdc unit with a 16 Watt COM transmitter.

  • Page 10: Technical Specifications

    Depth Behind Panel with 11.00 in. (279 mm) Connectors (Measured from face of aircraft panel to rear of connector backshells) GPS 400 Weight (Unit only) 3.8 lbs. (1.7 kg) GPS 400 Weight (Installed with 4.9 lbs. (2.2 kg) rack and connectors) GNC 420 Weight (Unit only) 4.5 lbs.
  • Page 11 -20°C to +55°C. For more details see Environmental Qualification Form. Humidity 95% non-condensing Altitude Range -1,500 ft to 50,000 ft Input Voltage Range (GPS 400) 11 to 33 V Input Voltage Range 22 to 33 V GNS 430 (011-00280-00) and GNC 420 (011-00506-00)
  • Page 12 1.3.4 COM Transceiver Specifications (GNC 420 and GNS 430 Only) ** Regulatory Compliance TSO-C37d Class 4 & 6* (3 & 5 for “A” models), TSO-C38d Class C & E, JTSO-2C37e, JTSO-2C38e, RTCA DO-186a ICAO Annex 10 Volume III (Part II – Voice Communications Systems) Par.
  • Page 13 1.3.5 VOR Specifications (GNS 430 Only) Regulatory Compliance TSO C40c, JTSO-2C40c, RTCA DO-196, EuroCAE ED-22B Receiver Audio Sensitivity At -103.5 dBm (S+N)/N shall not be less than 6 dB. Course Deviation Sensitivity -103.5 dBm or less for 60% of standard deflection. Flag The VOR Course Deviation Flag must be flagged: a) in the absence of an RF signal.
  • Page 14 1.3.6 LOC Specifications (GNS 430 Only) Regulatory Compliance TSO C36e, JTSO-C36e, RTCA DO-195 CLASS A, EuroCAE ED-46B Receiver Audio Sensitivity At -103.5 dBm (S+N)/N shall not be less than 6 dB. Course Deviation Sensitivity -103.5 dBm or less for 60% of standard deflection. Flag The LOC Course Deviation Flag must be flagged: a) in the absence of an RF signal.

  • Page 15: License Requirements

    The GPS receivers in the 400 Series units are certified for IFR enroute, terminal, and non-precision approaches. The 400 Series initial certification was accomplished via STC’s by Garmin in a Piper PA32. See Appendix B for copies of the STC’s.

  • Page 16: Limited Warranty

    Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.

  • Page 17: Installation

    INSTALLATION INTRODUCTION Careful planning and consideration of the suggestions in this section are required to achieve the desired performance and reliability from the 400 Series unit. Any deviations from the installation instructions prescribed in this document shall be accomplished in accordance with the requirements set forth in FAA AC 43.13-2A, and 14 CFR Part 43 Maintenance, Preventive Maintenance, Rebuilding, and Alteration.
  • Page 18 Figure 2-1. GPS Antenna and Unit Installation Considerations If a COM antenna is found to be the problem, a 1.57542 GHz notch filter (Garmin P/N 330-00067-00) may be installed in the VHF COM coax, as close to the COM as possible. This filter is not required for the GNC 420 and GNS 430 transmitters.

  • Page 19: Rack Considerations

    2.2.8 COM, VOR/LOC, and Glideslope Antenna Installation Instructions Install the COM, VOR/LOC, and Glideslope antennas according to the manufacturer’s recommendations. Avoid running other wires and coaxial cables near the VOR/LOC antenna cable. RACK CONSIDERATIONS Plan a location which gives the pilot complete and comfortable access to the entire keypad and which is plainly visible from the pilot’s perspective.
  • Page 20 Qualified GPS Antenna This antenna must be one of those listed in the accessories list, or meet the following requirements: 1. DO-160C Environmental Conditions The antenna shall meet the environmental conditions listed below and shall conform to the test requirements of RTCA DO-160C. Environmental Condition Category Description...

  • Page 21: Installation Procedure

    INSTALLATION PROCEDURE UNIT AND ACCESSORIES The 400 Series units are available under the following part numbers: 3.1.1 GNS 430 (A) CATALOG UNIT ACCESSORIES COLOR OPERATING MINIMUM 430A VOLTAGE XMIT PWR 010-00139-00 011-00280-00 BLACK 10 W 010-00139-01 011-00280-00 BLACK 10 W 010-00139-10 011-00280-10 BLACK...
  • Page 22 011-00504-10 GRAY 010-00171-11 011-00504-10 GRAY 1) The following accessories are included with the GPS 400 for those indicated with a “Y” above: MOUNTING RACK (115-00243-00) CONNECTOR KIT (011-00351-03) BACK PLATE ASSEMBLY (011-00676-03) GPS 400 PRODUCT INFO KIT (K00-00056-00) Alternate (secondary) power input available (review installation drawing).
  • Page 23 The following installation accessories are available: 1. GPS Antenna Options: • GA 56 Antenna Kit, without cable (Mod 1 or later, Garmin P/N 010-10040-01). This kit contains the following items: ITEM GARMIN P/N GA 56 ANTENNA SUB-ASSEMBLY 011-00134-00 BACKING PLATE...

  • Page 24: Data Base Options

    DATA BASE OPTIONS ITEM GARMIN P/N DATA CARD, WORLD WIDE 010-10201-00 DATA CARD, AMERICAS 010-10201-01 DATA CARD, INTERNATIONAL 010-10201-02 MISCELLANEOUS OPTIONS ITEM GARMIN P/N CONNECTOR, BNC, MALE, CLAMP 330-00087-00 LOW-LOSS AVIATION ANTENNA 320-00003-00 EXTENSION CABLE WITH RIGHT ANGLE BNC CONNECTOR, 15 FT.

  • Page 25: Cable Installation

    (P4001) (P4006) connector Connector Type High Density Pin Contact Standard Density Socket Contact .1” Pitch Card-edge Wire Gauge 22-28 AWG 18 AWG 20-24 AWG 20-24 AWG Garmin P/N 336-00021-00 336-00023-00 336-00022-00 336-00029-00 Military P/N M39029/58-360 M39029/63-368 204370-2 205090-1 583853-4 Positronic...

  • Page 26: Rack Installation

    NOTES 1. 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 to change without notice. 3. Alternate contacts for 18 AWG wire: As an alternative to the Positronic contacts listed (and provided in the installation kit), the installer may use contacts made by ITT Cannon under P/N 031-1007-001.

  • Page 27: 400 Series Unit Insertion And Removal

    400 SERIES UNIT INSERTION AND REMOVAL The 400 Series unit is installed in the rack by sliding it straight in until it stops, about 1 inch short of the final position. A 3/32“ hex drive tool is then inserted into the access hole at the bottom of the unit face. Rotate the hex tool clockwise while pressing on the left side of the bezel until the unit is firmly seated in the rack.
  • Page 28 This page intentionally left blank. Page 3-8 400 SERIES INSTALLATION MANUAL Page Rev L P/N 190-00140-02...

  • Page 37: System Interconnects

    MAIN OBS STATOR G (2.5V COMMON OBS) * Applies only to part numbers 011-00280-30 (GNS 430), 011-00836-10 (GNS 430A), 011-00506-30 (GNC 420), 011-00837-10 (GNC 420A) and 011-00504-10 (GPS 400). For applications requiring secondary or alternate power bus input. 400 SERIES INSTALLATION MANUAL...
  • Page 38 AIRCRAFT GROUND AIRCRAFT GROUND * Applies only to part numbers 011-00280-30 (GNS 430), 011-00836-10 (GNS 430A), 011-00506-30 (GNC 420), 011-00837-10 (GNC 420A) and 011-00504-10 (GPS 400). For applications requiring secondary or alternate power bus input. Page 4-2 400 SERIES INSTALLATION MANUAL...
  • Page 39 4.1.2 P4002 (GNC 420 and GNS 430 Only) View of J4002 connector from back of unit Pin Name RESERVED RESERVED RESERVED COM MIC KEY INTERCOM MIC HI COM MIC AUDIO HI 500Ω COM AUDIO HI RESERVED RESERVED RESERVED AIRCRAFT POWER AIRCRAFT POWER RESERVED TRANSMIT INTERLOCK...
  • Page 40 4.1.3 P4006 (GNS 430 Only) View of J4006 connector from back of unit Pin Name VOR/LOC +TO VOR/LOC +FROM (VOR/LOC COMMON) VOR/LOC +FLAG VOR/LOC -FLAG (VOR/LOC COMMON) VOR/LOC +LEFT VOR/LOC +RIGHT (VOR/LOC COMMON) RESERVED VOR/LOC COMPOSITE OUT VOR OBS ROTOR C VOR OBS ROTOR H (GROUND) VOR OBS STATOR E/G (VOR/LOC COMMON) VOR OBS STATOR F...

  • Page 41: Power, Lighting, And Antennas

    P4006 * Optional alternate power, applies only to part numbers 011-00280-30 GNS 430, 011-00836-10 GNS 430(A, 011- 00506-30 GNC 430, 011-00837-10 GNC 420(A), and 011-00504-10 (GPS 400). CAUTION To operate the GNC 420 P/N 011-00506-00 or GNS 430 P/N 011-00280-00 COM transceiver in a 14-volt aircraft, a 14 to 28 volt converter such as a KGS Electronics models RB-126 or UC-14-28 or equivalent must be used.

  • Page 42: Altimeter

    4.2.3 Power, Lighting, and Antennas Configuration Refer to section 5.2.6 for lighting configuration. 4.2.4 Power, Lighting, and Antennas Calibration and Checkout Refer to section 3.9 for the COM antenna checkout. 4.2.5 Power, Lighting, and Antennas Interconnect Refer to Figure 4-5 on page 4-29 for the power, lighting, and antennas interconnect. ALTIMETER 4.3.1 Altimeter Function...

  • Page 43: Main Indicator

    MAIN INDICATOR 4.4.1 Main Indicator Function The Main Indicator displays both lateral and vertical deviation from selected course, To/From indications, lateral and vertical flags and superflags. The “CDI” key on the bezel of the GNS 430 takes the place of remote “NAV/GPS” switches, and is used to toggle between display of GPS and VOR/ILS navigation display on a remote indicator.
  • Page 44 Refer to Figure 4-7 on page 4-33 for the generic main indicator interconnect. Refer to Figure 4-8 on page 4-35 for the interconnect between a GNS 430 and a Bendix/King KI 209A. Refer to Figure 4-9 on page 4- 37 for the interconnect between a GPS 400 or GNC 420 and a Bendix/King KI 208A. Page 4-8...

  • Page 45: Annunciators/Switches

    ANNUNCIATORS/SWITCHES 4.5.1 Annunciators/Switches Function NOTE Initial certification of the 400 Series units was accomplished without use of any remote switches or annunciators, since the same switching and annunciation is available on the front panel of the 400 Series unit. However, if the 400 Series unit is not installed in the pilot’s normal field of view, some or all of the remote switches and annunciators may be required by your certification agency.
  • Page 46 4.5.1.12 ILS/GPS APPROACH Output Sinks 500 mA when GPS navigation is selected and GPS approach is active or when VLOC navigation is selected and an ILS channel has been selected. This output may be connected to the ILS Engage input of an autopilot or flight director to provide higher autopilot gain while the 400 Series unit is operating in the ILS or GPS Approach modes of operation.

  • Page 47: Serial Data

    SERIAL DATA 4.6.1 Serial Data Function 4.6.1.1 RS-232 The 400 Series unit is capable of interfacing with other aviation instruments by transmitting RS-232 Type 1 (often known as ARNAV format) and Type 2 (often known as Northstar format) data on the GPS RS 232 OUT 1 port.
  • Page 48 Label # Parameter Name 1 2 3 4 Distance to Go • 251G Distance to Go • • • Time to Go • • • • 260G Date (BCD) • • • 261G GPS Discrete Word 1 • • • 275G LRN Status Word •...
  • Page 49 Refer to Figure 4-18 on page 4-55 for the Traffic Advisory System Interconnect. Refer to Figure 4-19 on page 4-57 for the Weather and Terrain Interconnect. Refer to Figure 4-19 on page 4-57 for RS-232 serial data interconnects with the GARMIN GDL 49 Satellite Data Link Transceiver.

  • Page 50: Com/Vor/Ils Audio (Gnc 420 And Gns 430 Only)

    COM/VOR/ILS AUDIO (GNC 420 AND GNS 430 ONLY) 4.7.1 COM/VOR/ILS Audio Function and Emergency Mode Activation of COM MIC KEY enables COM MIC AUDIO and causes the transceiver to transmit. 500Ω COM AUDIO and 500Ω VOR/ILS AUDIO are 100 mW audio outputs that are intended to drive a headset or an audio panel.
  • Page 51 4.7.2.3 COM AUDIO, VOR/ILS AUDIO Pin Name Connector P4002 500Ω COM AUDIO HI 500Ω COM AUDIO LO P4002 P4006 500Ω VOR/ILS AUDIO HI P4006 500Ω VOR/ILS AUDIO LO 500Ω COM AUDIO and 500Ω VOR/ILS AUDIO each supply 100 mW into a 500 Ω load. These are balanced outputs and the LO output must be connected.

  • Page 52: Vor/Ils Indicator (Gns 430 Only)

    VOR/ILS INDICATOR (GNS 430 ONLY) 4.8.1 VOR/ILS Indicator Function NOTE Because the GNS 430 includes a “CDI” button that performs switching between GPS and VOR/ILS on a remote indicator, it is seldom necessary to use these outputs to drive an indicator. It is only necessary when it is desired for a separate indicator to display VOR/ILS deviation full-time (regardless of the “CDI”...
  • Page 53 4.8.2.4 Flag Pin Name Connector VOR/LOC +FLAG P4006 VOR/LOC -FLAG (VOR/LOC COMMON) P4006 GLIDESLOPE +FLAG P4006 GLIDESLOPE +DOWN/-FLAG (GLIDESLOPE P4006 COMMON) The Flag output is capable of driving up to three 1000 Ω meter loads. When valid information is present (Flag OUT OF VIEW) the Flag output is 375 ±80 mV When invalid information is present (Flag IN VIEW) the Flag output is 0 ±25 mV...

  • Page 54: Rmi/Obi

    RMI/OBI 4.9.1 RMI/OBI Function The MAIN OBI output provides bearing information from the active waypoint for Bendix/King Serial OBI devices based upon the 400 Series unit’s GPS navigation. For the GNS 430, the MAIN OBI output may be configured so that it sends VOR/ILS bearing information when VLOC is selected by the GNS 430 CDI key.

  • Page 55: Dme Tuning (Gns 430 Only)

    4.10 DME TUNING (GNS 430 ONLY) 4.10.1 DME Tuning Function The GNS 430 can channel a DME based on the tuned VLOC frequency. The GNS 430 outputs 2 of 5, BCD or Slip parallel DME and King Serial DME channeling format. When DME COMMON is held low, the GNS 430 actively tunes the DME.
  • Page 56 4.10.3 DME Tuning Configuration Refer to section 5.2.12 for the DME tuning configuration. 4.10.4 DME Tuning Calibration and Checkout None. 4.10.5 DME Tuning Interconnect Refer to Figure 4-23 on page 4-65 for the King Serial Panel DME tuning interconnect. Refer to Figure 4- 24 on page 4-67 for the King Serial Remote DME tuning interconnect.

  • Page 83: Post Installation Configuration & Checkout Procedure

    The configuration pages shown here reflect MAIN software version 2.25. All Configuration Pages shown apply to the GNS 430, but not all apply to the GPS 400 or GNC 420. Those pages and fields that apply only to certain 400 Series units are denoted as such.
  • Page 84 Selected course information from the following Flight Control systems: Bendix/King KFC 400 DATA IN 1, DATA IN 2, cont. GARMIN GAD 42 Selected course, heading, and true airspeed data from the GARMIN GAD 42. Selected course, heading, and joystick waypoint information from the Honeywell EFIS following EFIS systems:...

  • Page 85: Figure 5-2. Main Rs232 Config Page

    GAMA 429 Association (GAMA) General Aviation Subset, 2 Edition. The output data includes navigation and flight plan information to the following systems: GARMIN GAD 42 Interface Adapter Bendix/King EFS 40/50 Sandel SN3308 Collins EFIS 84 Certain other of Collins EFIS systems may also be compatible with this format.
  • Page 86 No unit(s) connected to output of this channel Aviation Serial position, altitude, velocity, and navigation data to the following units: GARMIN GPSMAP 195 or GPS III Pilot Argus 3000, 5000, or 7000 Moving Map Electronics International FP-5L Fuel Flow Computer (non-TSO’d)

  • Page 87: Figure 5-3. Main Inputs 1 Page

    5.2.3 MAIN INPUTS 1 Page Select the MAIN INPUTS 1 Page (see Figure 5-3). This page (along with the MAIN INPUTS 2 Page) allows you to monitor the data on ARINC 429, RS-232 and other electrical inputs. This is used for verifying electrical interfaces during installation and troubleshooting.

  • Page 88: Figure 5-6. Main Lighting Page

    5.2.6 MAIN LIGHTING Page Select the MAIN LIGHTING Page (see Figure 5-6). This page allows you to set display parameters that affect the display backlight and key lighting brightness. The DISPLAY and KEY lighting characteristics are adjusted separately, each with the following fields: LIGHTING Shows the current level of display backlighting, based on the lighting input source (lighting bus voltage, or the ambient...

  • Page 89: Figure 5-7. Main Lighting Page (Display Lighting From Lighting Bus)

    OFFSET Adjusts the lighting level up or down for any given input level. This field has a range of 0 (zero) to 99, and is set to 50 at the factory. This may also be used to match lighting curves with other equipment in the panel.

  • Page 90: Figure 5-11. Main Discrete Outputs Page

    5.2.9 MAIN DISCRETE OUTPUTS Page Select the MAIN DISCRETE OUTPUTS Page (see Figure 5-11). This page allows you to verify the operation of any external annunciators and switches that are present in the installation. Figure 5-11. MAIN DISCRETE OUTPUTS Page DISCRETE TOGGLE Selection Verify That:...
  • Page 91 TO-FROM Selection Verify That: The FROM flag is in view. FROM Hidden The TO/FROM flag is hidden. The TO flag is in view. SELECTED COURSE Select 150° on the CDI/HSI that is connected to the 400 Series unit’s MAIN OBS inputs. The SELECTED COURSE field indicates near to 150°...

  • Page 92: Figure 5-13. Com Setup Page (Gnc 420 And Gns 430 Only)

    5.2.11 COM SETUP Page (GNC 420 and GNS 430 Only) Select the COM SETUP Page (see Figure 5-13). These values are set at the factory and seldom require calibration. FREQ Selects a VHF communication frequency. For purposes of setting the squelch and sidetone levels, only the frequencies 118.000, 127.000, and 136.975 MHz can be used.

  • Page 93: Figure 5-14. Vor Discrete Inputs Page (Gns 430 Only)

    5.2.12 VOR DISCRETE INPUTS Page (GNS 430 Only) Select the VOR DISCRETE INPUTS Page (see Figure 5- 14). This page allows you to verify the operation of an external VLOC transfer switch that may be present in the installation. Figure 5-14. VOR DISCRETE INPUTS Page Selection Verify That:...

  • Page 94: Figure 5-16. Vor/Loc/Gs Arinc 429 Config Page (Gns 430 Only)

    SELECTED COURSE Select 150° on the CDI/HSI that is connected to the 400 Series VOR/LOC/GS OBS inputs. The SELECTED COURSE field should indicate near to 150° and a Calibrate to 150°? field appears. Selecting this field calibrates the 400 Series to match the input source. Verify OBS operation by checking that the course displayed on the 400 Series is within 2°...

  • Page 95: Figure 5-18. Stormscope Test Page

    5.2.15 STORMSCOPE CONFIG Page (Only if 400 Series unit configured for BFG WX-500 Stormscope interface) Select the STORMSCOPE CONFIG Page (see Figure 5- 17). This page shows the BF Goodrich WX-500 Stormscope configuration as reported by the WX-500 through RS-232 data. Verify that the STATUS field indicates “Ok”, and that the other displayed parameters are correct.

  • Page 96: Figure 5-20. Traffic Page (Skywatch)

    5.2.18 TRAFFIC Page (Only if 400 Series unit configured for BFG Skywatch or Ryan TCAD interfaces) Select the TRAFFIC Page (see Figure 5-20). This page shows the BFG Skywatch or Ryan TCAD modes of operation and current traffic situation. For BFG Skywatch, this page shows: 1.

  • Page 97: Figure 5-24. Data Link Page

    To select the Data Link Page, rotate the small right knob until the Data Link Page is displayed. Select “Data Link Status” (Figure 5-24). For complete installation and configuration information refer to the GDL 49 installation manual, GARMIN P/N 190-00231-00. Figure 5-24. DATA LINK Page...

  • Page 98: Additional Ground Tests

    ADDITIONAL GROUND TESTS 5.3.1 Connector Engagement Test 1. Turn on the 400 Series unit, and turn on the avionics master switch (if applicable). 2. Place the 400 Series unit in the rack and engage the pawl mechanism. 3. Turn the Allen screw of the locking pawl slowly clockwise until the 400 Series unit just comes on. A “T”...
  • Page 99 5.3.4 Deviation & Flags Check 5.3.4.1 Analog Deviation & Flags The analog deviation (LEFT/RIGHT and UP/DOWN), TO/FROM, and FLAG (lateral and vertical) outputs to a CDI or HSI should be verified in flight with potential sources of electrical noise such as autopilot, flaps, gear, heater blowers, etc.
  • Page 100 5.3.7 VHF COM Check (GNC 420 and GNS 430 Only) A flight test is recommended after the installation is complete to ensure satisfactory performance. To check the communications transceiver, maintain an appropriate altitude and contact a ground station facility at a range of at least 50 nautical miles. Contact a close ground station. Press the squelch disable button to defeat the automatic squelch feature and listen for any unusual electrical noise which would increase the squelch threshold.

  • Page 101: Appendix A. Certification Documents

    ICA. Following is a suggested ICA for a GARMIN 400 Series unit installation. Some of the checklist items do not apply, in which case they should be marked “N/A” (Not Applicable). In this sample, square braces are used to indicate instances where explicit words should be substituted (e.g., replace “[400 Series unit]”...
  • Page 102 6. Troubleshooting Information Refer to the 400 Series Maintenance Manual. 7. Removal and Replacement Information Refer to section 3.8 of this manual. If the unit is removed and reinstalled, a functional check of the equipment should be conducted in accordance with section 5.3 of this manual. 8.

  • Page 103: Environmental Qualification Form-Gns 430

    TSO-C34e, JTSO-C34e (GLIDESLOPE RCVR.) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00044-00 MANUFACTURER: GARMIN International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only. It is not intended to be a comprehensive listing of all test conditions.

  • Page 104: Environmental Qualification Form-Gnc 420

    TSO-C38d Class C & E, JTSO-2C38e (COM RECEIVER) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00044-00 MANUFACTURER: GARMIN International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only. It is not intended to be a comprehensive listing of all test conditions.

  • Page 105: Environmental Qualification Form-Gps 400

    Environmental Qualification Form—GPS 400 NOMENCLATURE: GPS 400 Airborne GPS System TYPE/MODEL/PART NO.: 010-00171-(), which includes 011-00504-00 TSO/JTSO COMPLIANCE: TSO-C129a Class A (1) (GPS) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00044-00 MANUFACTURER: GARMIN International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only.
  • Page 106 TSO COMPLIANCE: C129 Class A (1) MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: 004-00015-00 MANUFACTURER: GARMIN International, Inc. ADDRESS: 1200 E. 151 Street, Olathe, Kansas 66062 NOTE: The following information provides examples only. It is not intended to be a comprehensive listing of all test conditions.

  • Page 107: Appendix B. Stc Permission

    Appendix B. STC Permission Consistent with N8110.69 or Order 8110.4, Aviation Authority approved installers are hereby granted permission to use STC’s #SA00705WI (GNS 430), #SA00801WI (GNC 420), and #SA00800WI (GPS 400) data to modify aircraft. 400 SERIES INSTALLATION MANUAL Page B-1...
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  • Page 115: Appendix C. 400 Series Rs-232 Aviation Data Format

    Appendix C. 400 Series RS-232 Aviation Data Format ELECTRICAL INTERFACE The output signals shall be compatible with RS-232C. Data shall be generated at 9600 baud with a word length of 8 bits, one stop bit, and no parity. GENERAL OUTPUT FORMAT The 400 Series RS-232 data shall have the following general format: - ASCII start-of-text character (02 hex) - Type 1 output sentences (see following paragraphs for description)
  • Page 116 The following table describes the Type 1 output sentence item designator (id) and item data (dddd) fields. If data for these sentences is invalid or unavailable, dashes ("-") are used to fill in all non-blank character positions. Ident (1 byte) Data (10 bytes) Description 1 2 3 4 5 6 7 8 9 0...
  • Page 117 OUTPUT SENTENCE TYPE 2 The 400 Series Type 2 output sentence shall have the following general format: - item designator (3 ASCII characters) - sequence number (1 binary byte) - waypoint identifier (5 ASCII characters) - waypoint latitude (3 binary bytes) - waypoint longitude (4 binary bytes) mvar - magnetic variation at waypoint (2 binary bytes)
  • Page 118 The following table describes the Type 2 output sentence item designator (id), sequence number (seq), waypoint identifier (wpt), waypoint latitude (lat), waypoint longitude (lon), and magnetic variation at waypoint (mvar) fields. Field Byte Format Description 7 6 5 4 3 2 1 0 ASCII character 'w' (77 hex) Two ASCII numeric characters representing route sequence number of waypoint (01 to 31)

  • Page 119: Appendix D. 400 Series Rs-232 Fuel/Air Data Input Format

    8 bits, one stop bit, and no parity. One message is received per second. SHADIN ALTITUDE SENTENCE The GARMIN 400 Series units shall be capable of receiving the following 17-byte message from Shadin Altitude Encoders, Altitude Serializers, and Altitude Converters: RMS<sp><+/->12345T<+/->12ul<CR>...
  • Page 120 0 (0x30, 0x30, 0x30) to 255 (0x32, 0x35, 0x35). ARNAV / EI FUEL FLOW SENTENCE The GARMIN GNC 400 shall be capable of receiving the following 13-byte message from the ARNAV or Electronics International (“EI”) Fuel Flow Indicators: <STX>G0245100550<ETX>...
  • Page 121 SHADIN FUEL/AIRDATA COMPUTER SENTENCE The GARMIN 400 Series units shall be capable of receiving the following message strings from the Shadin Fuel/Airdata or Airdata Computer: <STX> ZA012<CR><LF> "ZA" (ASCII characters); "012" represents indicated Air Speed (knots) ZB345<CR><LF> "ZB" (ASCII characters); "345" represents true Air Speed (knots) ZC678<CR><LF>...
  • Page 122 This page intentionally left blank. Page D-4 400 SERIES INSTALLATION MANUAL Page Rev L P/N 190-00140-02...

  • Page 123: Appendix E. 400 Series Lru Interface Overview

    The following tables provide a quick overview of some of the equipment that can be interfaced with the GARMIN 400 Series units. This is not a complete listing however; it only represents those units listed in Section 4 of this manual. When installing equipment on the aircraft always refer to the manufacturers’...
  • Page 124 IRU/AHRS KAU 461 AHC 85E Laseref LTR 81 LTN 90-100 HG 1075 AB LTN-91 HG 1095 AB LTN-92 Function Bendix/King Garmin Century Collins Sperry S-Tec KI 202A GI 102/A NSD 360A 331A-6P RD 550A ST 180 KI 203 GI 106/A...

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