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Summary of Contents for L-3 Communications SKYWATCH HP SKY899 Series
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SKY899 Traffic Alert/Advisory System. This information is supplemented and kept current by revisions, service letters and service bulletins. 009-11900-001 (Revision F) L-3 Communications Avionics Systems 5353 52 Street, S.E. July 18, 2013 Grand Rapids, MI USA 49512-9704 www.as.l-3com.com...
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HyperTerminal ® is a registered trademark of Hilgraeve, Inc. Mylar ® and Teflon ® are registered trademarks of DuPont. Procomm ® is a registered trademark of Datastorm Technologies, Inc. ® and Stormscope ® are registered trademarks of L-3 Communications Avionics Systems, Inc. SKYWATCH Page A 009-11900-001...
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Avionics Systems 5353 52 Street, S.E. Grand Rapids, MI 49512-9704 USA Telephone (616) 949-6600 Fax (616) 977-6898 Service Letter www.L-3avionics.com Revision History: Rev A (04/09/2015) SL-299 (Rev. B) August 27, 2015 NOTE Revision B released to change company name "Symetrics Industries" to "Extant Aerospace"...
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The document reference is online, please check the correspondence between the online documentation and the printed version.
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The document reference is online, please check the correspondence between the online documentation and the printed version.
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The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual About This Manual SECTION 1 – GENERAL INFORMATION This section includes equipment specifications and a functional description. It describes the various hardware configurations and includes a list of items furnished and items required but not supplied with the equipment.
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Service Letter. As of June 1, 2006 all new TRC899’s will ship with software 1.7 or later. SL-219 Service Letter stating that L-3 Communications Avionics Systems grants permission to use our STC and installation data for installations and approvals of SKY899/SKY899A.
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SKY899 Installation Manual List of Effective Pages Dates of original and changed pages are: Original (Rev. A) ....4 September 2001 Revision B ......28 August 2003 Revision C ......January 22, 2007 Revision D ..... September 20, 2007 Revision E ........ April 19, 2013 Revision F .........
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SKY899 Installation Manual Table of Contents (Continued) Paragraph Page Appendix C Installation Checkout Using the TCAS-201 Ramp Test Set INTRODUCTION ........................C-1 CONTROLS ..........................C-1 CHECKOUT PROCEDURE ....................... C-2 Appendix D Installation Checkout Using the TIC T-49C Flightline Tester INTRODUCTION ........................D-1 CONTROLS ..........................
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SKY899 Installation Manual List of Illustrations Figure Page Figure 1-1: Typical Vertical Display Modes and Traffic Zones ..............1-3 Figure 1-2: SKY899 System Block Diagram .................... 1-4 Figure 1-3: Standard TRC Mounting Tray (P/N 805-10870-001) ............. 1-7 Figure 1-4: Ruggedized TRC Mounting Tray (P/N 805-10870-003) ............1-8 Figure 1-5: P1 Connector Dimensions (Reference Only) ................
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SKY899 Installation Manual List of Illustrations (continued) Figure Page Figure 4-16: Heading Menu ........................4-8 Figure 4-17: Heading Valid Line Menu ..................... 4-9 Figure 4-18: Barometric Altitude Menu ....................4-9 Figure 4-19: Radio Altimeter Menu......................4-9 Figure 4-20: Radio Altimeter Valid Line Menu ..................4-10 Figure 4-21: Landing Gear Menu ......................
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SKY899 Installation Manual List of Illustrations (continued) Figure Page Figure H-1: IFR-6000 Test Set with Directional Antenna Attached ............H-1 Figure H-2: IFR-6000 Test Set Basic Controls ..................H-2 Figure H-3: TCAS Setup Screen ....................... H-2 Figure H-4: Test Position Setup ........................ H-3 Figure H-5: TCAS Screen (ATCRBS) ......................
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SKY899 Installation Manual This page intentionally left blank. Page xii 009-11900-001 July 18, 2013 Revision F The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual Section 1 General Information INTRODUCTION This section contains a functional description of the SKY899 traffic alert/advisory system sensor, describes the various hardware and software configurations, outlines the main features of the system, and provides a system block diagram. The SKY899 is a new generation traffic alert/advisory system that has different inputs and outputs and it requires different wiring than the SKY497.
SKY899 Installation Manual FUNCTIONAL DESCRIPTION The SKYWATCH ® HP SKY899 is a new generation airborne traffic alert/advisory system that increases the active-mode surveillance range over the SKY497 system from 11 nmi to 35 nmi. The SKY899 advises the flight crew where to look for transponder equipped aircraft that may pose a collision threat.
SKY899 Installation Manual PHYSICAL DESCRIPTION The SKY899 System consists of the following main components: • Transmitter Receiver Computer • System Configuration Module • WX-1000/SKY497 Display (or alternate display) • Directional Antenna NY156 or NY164 (depending on TCAS I or TAS installation) SKY899 is an active system that operates as an aircraft-to-aircraft interrogation device.
SKY899 Installation Manual Figure 1-2: SKY899 System Block Diagram Page 1-4 - General Information 009-11900-001 July 18, 2013 Revision F The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual The following table identifies the components which make-up the SKY899 system. Table 1-1: SKY899 System COMPONENT PART NUMBER TRC899 Transmitter Receiver Computer 805-11900-001 System Configuration Module 814-18005-001* WX-1000/SKY497 Display (Optional) 78-8060-5900-x** Directional Antenna NY156 805-10003-001 NY164 805-10890-00x** * System Configuration Module is included in the installation kit P/N 817-11900-xxx (see table 1-2).
SKY899 Installation Manual Figure 1-3: Standard TRC Mounting Tray (P/N 805-10870-001) 009-11900-001 General Information - Page 1-7 Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual Figure 1-4: Ruggedized TRC Mounting Tray (P/N 805-10870-003) Figure 1-5: P1 Connector Dimensions (Reference Only) Page 1-8 - General Information 009-11900-001 July 18, 2013 Revision F The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual Figure 1-6: TRC899 Transmitter Receiver Computer (TRC) 1.3.2 System Configuration Module P/N 814-18005-001 The system configuration module is used to store aircraft installation dependent information via the service menu. The system configuration is read from the module during turn-on. The module is included in the installation kit and is designed to be installed inside the backshell of connector P1 (see Figure 1-7: System Configuration Module).
SKY899 Installation Manual 1.3.3 Display (Alternate or WX-1000/SKY497 Display P/N 78-8060-5900-x) The display used is installation dependent. If installing to meet the requirements for a TCAS I installation an alternate display device (i.e., EFIS, MFD, IVSI, weather radar indicator) approved for displaying TCAS I information is required.
SKY899 Installation Manual Figure 1-9: WX-1000/SKY497 Display 009-11900-001 General Information - Page 1-11 Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual 1.3.4 Directional Antenna (NY156 P/N 805-10003-001 or NY164 P/N 805-10890-00x) The directional antenna is a teardrop-shaped antenna. Connections are made through two TNC and one BNC connector. The antenna is sealed against environmental extremes and is non-repairable. To ensure a tight seal between the airframe and antenna, an O-ring seal (i.e., an O-ring groove for an MS28775-044 O-ring) has been incorporated into the design.
SKY899 Installation Manual Table 1-5: Directional Antenna Installation Kit 817-10009-xxx SUPPLIED PARTS * KIT PART NUMBER PART NUMBER DESCRIPTION QUANTITY 817-10009-001 800-10066-001 Special Adapter Plate, 40 Inch (101.6 cm) Radius 817-10009-002 800-10066-002 Special Adapter Plate, 63 Inch (160.0 cm) Radius 817-10009-003 800-10066-004 Special Adapter Plate, 80 Inch (203.2 cm) Radius...
• Changes the displayed company logo and name to reflect new ownership by L-3 communications. 1.09 Refer to Service Bulletin SB805-11900-1. • Adds ViP™ Extended Audio Callout feature.
SKY899 Installation Manual INTERFACE The electrical characteristics of all input and output signals are detailed in Appendix A. Listed below in Table 1-8 is the minimum equipment required to interface with the SKY899. See chapter 2 for details. Table 1-8: Minimum Interface Equipment Required AVIONICS EQUIPMENT SURVEILLANCE MODE...
SKY899 Installation Manual Heading Input Cable This cable provides aircraft heading information to the SKY899. Cable that meets the specification for SKY899 installation is available from suppliers listed in Table 1-11. Table 1-11: Heading Input Cable Vendors CABLE COMPANY Dallas Avionics WX-5 1-800-527-2581 (6.84 lb/...
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SKY899 Installation Manual Miscellaneous Hardware The installer must provide suitable hardware to attach the TRC Mounting Tray. The following stainless steel fasteners are recommended: Channel Mount: Four 8-32 UNC-2A pan head machine screws per ANSI B18.6.3. (Six are required for the ruggedized tray.) Four 8-32 UNC-2A hex socket cap machine screws per ANSI/ASME B18.3.
SKY899 Installation Manual Switches (continued) WX-1000 If the final configuration includes a WX-1000 Stormscope Weather Mapping System, two external switches are required. Any general purpose toggle switch (1/2 A @ 28 V dc) may be used for SW1 & SW2 switches. SW1 - A SPST switch is required for the SKYWATCH/Stormscope display mode switch.
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SKY899 Installation Manual Section 2 Installation INTRODUCTION The information and instructions provided in this manual are directed toward fixed-wing aircraft. Installation must be made by qualified personnel, in conformance with applicable government regulations. The information furnished is for convenience only. CAUTION Installing SKY899 on float-equipped aircraft can result in degraded performance.
SKY899 Installation Manual ANTENNA LOCATION Location is an important factor for maximum antenna performance. Optimum location for a particular aircraft type is usually available from the aircraft manufacturer. In selecting a location, consider the following: Directional Antenna The mounting site should be on the top forward fuselage, as close to the centerline as possible, and within -10 degrees of the in-flight horizon (see Figure 2-1).
SKY899 Installation Manual TRC LOCATION Typically the TRC is installed in the electronics bay. In selecting a location, consider the following: Cable Length Cable runs should be as short as practicable in order to minimize potential electrical interference. Cable length to antennas must not exceed the values listed in table 1-9.
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SKY899 Installation Manual This page intentionally left blank. Page 2-4 - Installation 009-11900-001 July 18, 2013 Revision F The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual Figure 2-2: Interconnect Wiring Without WX-1000 (sheet 1 of 2) 009-11900-001 Installation - Page 2-5 (2-6 blank) Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual Figure 2-2: Interconnect Wiring Without WX-1000 (sheet 2 of 2) 009-11900-001 Installation - Page 2-7 (blank 2-8) Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual Figure 2-3: Interconnect Wiring with WX-1000 (Sheet 1 of 2) 009-11900-001 Installation - Page 2-9 (blank 2-10) Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual Figure 2-3: Interconnect Wiring with WX-1000 (Sheet 2 of 2) 009-11900-001 Installation - Page 2-11 (blank 2-12) Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual Figure 2-4: Interconnect Wiring with Alternate Display (Sheet 1 of 2) 009-11900-001 Installation - Page 2-13 (blank 2-14) Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual Figure 2-4: Interconnect Wiring with Alternate Display (Sheet 2 of 2) 009-11900-001 Installation - Page 2-15 (blank 2-16) Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual CABLE REQUIREMENTS AND FABRICATION The installer will supply and fabricate all system cables. Cable specifications and approved vendors are provided in paragraph 1.7, equipment required but not supplied. Appendix A defines the electrical characteristics of all input and output signals and identifies the cable requirements for each signal. Required connectors and contact pins are supplied in the installation kits.
SKY899 Installation Manual 2.6.1 Antenna Cables NOTES 1. If you fabricate your own cables, you must verify that the attenuation and VSWR does not exceed the specified values. 2. To add strain relief and alleviate stress caused by aircraft vibration, place 4-6 inches (10.2 to 15.2 cm) of heat shrink tubing over each antenna connector and cable.
SKY899 Installation Manual 2.6.3 Data Cable RS-232, RS-422, and ARINC-429 data cables are #22 AWG (minimum) twisted, shielded cables. The shield shall be grounded at both ends and at all breaks. Cable runs should be as short as practicable. 2.6.4 Heading Input Cable The heading input cable connects the TRC899 to the aircraft synchro heading system (refer to the Interconnect Wiring Diagram, Figure 2-2, Figure 2-3 or Figure 2-4).
SKY899 Installation Manual 2.6.5 Power Cable For the power cable, use #16 AWG (minimum) twisted shielded pair cable (Beldon 83322, Alpha 2826/2, or equivalent). The power cable runs from the aircraft circuit breaker panel to the TRC. The power cable is connected to the TRC using the MS3126F12-3S connector included in the TRC installation kit.
SKY899 Installation Manual Figure 2-6: Display Cable The sub-cable color-coded jackets and shields should be left on the sub-cables as close to the connectors as practical to provide the required shielding and to identify the sub-cables. 2.6.8 Converting Existing Aircraft Wiring from SKY497 to SKY899 In some instances, it may be desirable to convert an existing SKY497 installation to a SKY899 installation.
SKY899 Installation Manual AIRCRAFT DISCRETE INPUTS The aircraft discrete inputs are used for ViP™ extended audio callout, audio suppression and to assist in determining the aircraft's phase of flight or flight condition (e.g., on ground or in flight). The discrete inputs are configured in the service menu and saved to the System Configuration Module.
SKY899 Installation Manual 2.7.4 Squat Switch (Weight-On-Wheels) This input is to be connected to the squat switch (weight-on-wheels) to sense when the aircraft is on the ground. NOTE If the aircraft is not equipped with a squat switch, it is recommended that a squat switch or an alternate switch be installed.
SKY899 Installation Manual 2.9.1 General Sensor Inputs The TRC can use four general sensor inputs: barometric altimeter, radio altimeter, magnetic heading, and GPS navigation data. Five receive channels have been designated for these inputs and will allow various combinations of speed and equipment types. It is also possible for multiple data inputs (barometric altimeter, radio altimeter, magnetic heading and GPS navigation) from one source to be received on one channel (e.g., ARINC-429 superbus).
SKY899 Installation Manual 2.9.3 Alternate Display Output The TRC has one transmit channel designated for alternate displays (i.e., EFIS, MFD and weather radar via a Radar Graphics Computer). The transmitter speed is fixed at 100 kHz. A maximum (typical) of ten loads (displays) can be connected to the output channel.
SKY899 Installation Manual 2.11.1 Gilham Code (Encoding Altimeter) These signals are Gilham code inputs coming from an airdata computer or altitude digitizer (encoding altimeter). These 11 lines may be connected in parallel with the aircraft transponder. If the aircraft is equipped with selectable altitude encoders, connect the altitude inputs so that SKY899 is always connected to the selected encoder.
SKY899 Installation Manual 2.16 OPERATIONAL MODE OUTPUT (OPTIONAL) Operational mode output can drive a lamp annunciating when the system is in operational mode (i.e., not in standby mode). Output is switched to ground when system is in operation mode. The lamp requires a separate dc source (constant or dimming circuit).
SKY899 Installation Manual The SKY899 can accept altitude that is compatible with ARINC characteristic 552 and 552A. In addition, special drivers are available to support the following altimeters: Bonzer Mark 10X Collins ALT-50 Collins ALT-55 King KRA 405 (Aux. Output #1) King KRA10/10A Sperry AA-100 Terra TRA 3000...
SKY899 Installation Manual When using an alternate display device reference Figure 2-4 as well as manufacturer instructions concerning these connections. Required soft-key connections will depend upon the alternate display capabilities (e.g., some displays control operation mode internally and ranges externally, while others handle ranges internally and operation modes externally).
SKY899 Installation Manual 2.22 SYSTEM CONFIGURATION MODULE The system configuration module (Figure 2-8) is used to store aircraft installation dependent information (e.g., aircraft type, discrete inputs, heading source, speed of data bus, etc.). Aircraft specific information is selected via the service menu, typically during system setup. Once the setup settings have been saved the system configuration will stay with the aircraft wiring allowing the TRC to be replaced or exchanged without having to re-configure the TRC.
SKY899 Installation Manual 2.23 WX-1000/SKY497 DISPLAY (OPTIONAL) The WX-1000/SKY497 display can be used to display traffic alert/advisory information as well as Stormscope information. Connections are listed in Table 2-2. Table 2-2: WX-1000/SKY497 Display Connection DISPLAY WIRE COLOR FUNCTION P101 SUB-CABLE WIRE (Inner Jackets) DPWR+15_OUT...
SKY899 Installation Manual 2.24.1 SKYWATCH/Stormscope Mode Switch The SKYWATCH/Stormscope mode switch (SW1) is required only if a WX-1000 Stormscope Weather Mapping System is installed. This switch permits the flight crew to switch the display between the SKY899 and WX-1000. If a TA (Traffic Advisory) is detected while in the Stormscope mode, the display will switch to the SKYWATCH mode.
SKY899 Installation Manual NOTES 1. Before installing the antenna on an aircraft remove the tape, which holds the O-RING gasket in place during shipment (refer to SL-206). If the O-ring is in a separate bag, remove and install it in the O-ring groove on the bottom of the antenna.
SKY899 Installation Manual 2.26 TRC MOUNTING TRAY INSTALLATION To accommodate different space limitations, the standard TRC mounting tray (P/N 805-10870-001) can be channel or flat mounted. To flat mount the tray, simply remove the eight 6-32 (Phillips) screws that secure the channel to the tray. The ruggedized TRC mounting tray (P/N 805-10870-003), required for installations in a high vibration environment, must be channel mounted.
SKY899 Installation Manual Figure 2-13: Mounting Holes for Ruggedized Mounting Tray, P/N 805-10870-003 2.27 TRC INSTALLATION CAUTION Before placing the TRC into its mounting tray, de-energize or disconnect all power and signal sources and loads used with the SKY899 system. 1.
SKY899 Installation Manual Figure 2-14: TRC899 Installation 009-11900-001 Installation - Page 2-37 Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual 2.28 MOUNTING THE WX-1000/SKY497 DISPLAY The display mounts in a standard 3ATI panel cutout (Figure 2-15). The unit may be mounted from the front or rear. The following paragraphs describe the installation procedure. 2.28.1 Panel Cutout Refer to Figure 2-15 for the panel cutout and mounting hole dimensions. Drill and punch the required holes.
SKY899 Installation Manual 2.28.2 Display Installation Figure 2-16 shows a typical display installation. The display can be mounted to the instrument panel from the front or from the rear. An optional mooring clamp is available for increased stability in high-vibration environments.
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SKY899 Installation Manual Section 3 Installation Checkout INTRODUCTION This section contains checkout procedures that will validate the installation and return to service of the SKY899 installed with a WX-1000/SKY497 display using TT391 Flightline Tester. Detailed setup, operation and maintenance information for the TT391 Flightline Tester is provided in the TT391 Instruction Manual.
SKY899 Installation Manual CONTROLS All operating controls are located on the front of the display. Figure 3-1 shows the locations of the controls. Complete operating instructions are provided in the SKY899 Pilot's Guide supplied with each system. Figure 3-1: Controls OFF/BRT Power is applied by rotating the knob clockwise past the detent.
SKY899 Installation Manual Figure 3-2: Start-up Screen After approximately thirty seconds the display will show the STANDBY screen (see Figure 3-3). NOTE If the TRC has not been calibrated to the directional antenna the display may show a “SKY899 FAILED” message. Calibration will be done during system setup verification and operation.
SKY899 Installation Manual 3.3.1.1 System Configuration (via Service Menu) 1. Turn SKY899 OFF and then enter the Service Menu (see paragraph 4.4) by holding the left two buttons (soft-keys 1 and 2) depressed as the system is turned ON. 2. From the Service Menu, select Setup and then select Aircraft Type. The Aircraft Type menu will appear, select fixed wing aircraft type (rotorcraft is provided for future option, do not select at this time).
SKY899 Installation Manual b. Select Type from the menu. The Equipment type menu will appear, select source equipment from list (i.e., GPS, BarAlt, etc.). If connected to an ARINC-429 super bus, select all the other equipment(s) that are located on that bus. When finished selecting equipment press exit. c.
SKY899 Installation Manual 3.3.2 System Setup Verification and Operation CAUTION Each time the TRC, directional antenna, or directional antenna cables (including connectors) are installed, removed or replaced, the TRC must be calibrated to the directional antenna (see calibration below and paragraph 4.4.3).
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SKY899 Installation Manual 11. Position the TT391 Flightline Tester on one of the test points identified in previous step. CAUTION The Flightline Tester is not weatherproof when the lid is open. Do not setup or operate the Flightline Tester in conditions of rain, sleet, etc. 12.
SKY899 Installation Manual Figure 3-4: Typical Patch Antenna Tripod Mount 13. From each test point (see step 12): a. Position the TT391 Patch Antenna facing the SKYWATCH HP aircraft under test. b. Set the TT391 POWER switch to the ON position. c.
SKY899 Installation Manual If MSG label is present press MSG soft-key (1) for degraded operation message and refer to Chapter 4 troubleshooting to isolate the problem. 18. This completes the post installation checkout procedure. SELF TEST 1. Turn SKY899 OFF and then: a.
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SKY899 Installation Manual NOTE Audio levels can be adjusted via the service menu and at the aircraft audio panel. There is no internal audio adjustment. b. Reset the audio level via the service menu. (See paragraph 4.4.1.3. Select test from the audio level menu to hear a "traffic traffic"...
SKY899 Installation Manual Section 4 Maintenance 4.1 INTRODUCTION This chapter contains general flight-line maintenance and troubleshooting procedures for installations interfaced to WX-1000/SKY497 display or an alternate display. Removal of components is on condition of failure. Troubleshooting is intended to aid in isolating failures to a defective assembly. CAUTION Each time the TRC, directional antenna, or directional antenna cables (including connectors) are installed, removed or replaced, the TRC must...
SKY899 Installation Manual 4.3.3 Antenna 1. Check for dents, cracks, and punctures. CAUTION Do not paint the antennas. Do not use cleaning solvents on the antennas. 2. Remove all dirt and grease from surface areas. Clean with a soft cloth moistened with mild soap and water.
SKY899 Installation Manual Access the Service Menu on a WX-1000/SKY497 display by holding soft-keys (1) and (2) (the left two buttons) depressed as the system is turned on. Hold the buttons until the Service Menu is displayed. The Service Menu is shown in figure 4-2. Figure 4-2: Service Menu (WX-1000/SKY497 Display) Ground Test is available only if squat switch input indicates aircraft is on the ground.
SKY899 Installation Manual Figure 4-4: Save Menu Each setup item is covered in the following paragraphs. 4.4.1.1 Aircraft Type The aircraft type menu allows you to choose between fixed wing or rotorcraft aircraft. Rotorcraft is provided for future option, do not select it at this time. The Aircraft Type menu provides the following choices: Figure 4-5: Aircraft Type Menu 4.4.1.2 Antenna System...
SKY899 Installation Manual The Antenna System menu provides the following choices: Figure 4-6: Antenna System Menu Selecting Top Antenna (or Bottom Antenna) provides the following choices: (Bottom Antenna menu is same as Top Antenna menu) Figure 4-7: Top Antenna Menu 4.4.1.3 Audio Level The audio level menu allows you to set and test the audio level output.
SKY899 Installation Manual 4.4.1.4 ARINC 429 Ports Configuring the ARINC 429 ports should be done before configuring the avionics equipment. Select ARINC 429 ports from the Setup menu, the ARINC 429 receiver menu will be displayed. With all avionics equipment turned on, you can set the speed and the equipment type for each channel automatically (Autodetect) or individually.
SKY899 Installation Manual Selecting Type will cause the Equipment Type menu to appear: Figure 4-11: Equipment Type Menu Selecting Speed will cause the Speed menu to appear: Figure 4-12: ARINC-429 Receiver Speed Menu 4.4.1.5 Avionics Equipment Avionics equipment menu allows you to set the source equipment interfaced to SKY899 and sets discrete inputs.
SKY899 Installation Manual Figure 4-14: No Channel Assigned Menu The Avionics Equipment sub-menus are as follows. The GPS Nav menu provides the following choices: Figure 4-15: GPS Nav Menu The Heading menu provides the following choices: Figure 4-16: Heading Menu Page 4-8 - Maintenance 009-11900-001 July 18, 2013...
SKY899 Installation Manual Selecting Synchro Compass causes Heading Valid Line menu to appear: Figure 4-17: Heading Valid Line Menu The Barometric Altitude menu provides the following choices: Figure 4-18: Barometric Altitude Menu The Radio Altimeter menu provides the following choices: Figure 4-19: Radio Altimeter Menu The Radio Altimeter menu lists the known altimeter manufacturers and models that are compatible with SKY899 (see appendix A for signal characteristics).
SKY899 Installation Manual Figure 4-20: Radio Altimeter Valid Line Menu The Landing Gear menu provides the following choices: Figure 4-21: Landing Gear Menu The Weight-On-Wheels (squat switch) menu provides the following choices: Figure 4-22: Weight-On-Wheels Menu Page 4-10 - Maintenance 009-11900-001 July 18, 2013 Revision F...
SKY899 Installation Manual The Audio Suppression (audio inhibit) menu provides the following choices: Figure 4-23: Audio Suppression Menu The External Display menu is used to select display drivers and provides the following choices: Figure 4-24: External Display Menu Each alternate display will show the information consistent with the capabilities of that particular display. Refer to table 4-1 when selecting display drivers, it list display drivers and ranges.
SKY899 Installation Manual Table 4-1: Alternate Display Drivers DISPLAY STANDBY SELF-TEST DISPLAY DRIVER NAME REMARKS RANGES RANGE RANGE None No alternate display connected. Standard Type 1 2, 6, 15 nmi 6 nmi 6 nmi Standard Type 2 6, 12, 20 nmi 12 nmi 6 nmi Standard Type 3...
SKY899 Installation Manual The Software Version menu displays the following: Figure 4-26: Software Version Menu 4.4.2.2 System Log The 20 most recent errors detected by the system are saved in the System Log. For each error, the corresponding error code and run-time of occurrence are saved. The system log, as shown in figure 4-27, is displayed by selecting that option from the Information Menu.
SKY899 Installation Manual 4.4.2.3 Data Monitor The data monitor menu consists of 7 data monitors. All data is real-time and is updated to the screen once per second. The Data Monitor menu provides the following choices: Figure 4-28: Data Monitor Menu NOTE Values displayed on the Data Monitor are continuously updated.
SKY899 Installation Manual The Antenna Calibration Data Monitor screen shows the phase and calibration values for the selected antenna (top or bottom). If the averaged current phase (Cur. Phase) differs from the calibration phase (Cal. Phase) by more than 30 degrees there may be problem with the antenna system or the antenna may require recalibration.
SKY899 Installation Manual The GPS Nav Data Monitor screen shows data read from the GPS/Navigation system. Figure 4-33: GPS Nav Data Monitor The Mag Heading Data Monitor screen shows data read from the heading source (i.e., heading, flag, & flag configuration). Figure 4-34: Mag Heading Data Monitor The Rad Alt Data Monitor screen shows data read from the radio altimeter (e.g., source, altitude (in feet), warning flag and flag configuration).
SKY899 Installation Manual 4.4.3 Calibration NOTE Ensure transponder is in standby while doing calibration. Each time the TRC, directional antenna, or any of the directional antenna cables (including connectors) have been repaired or replaced, the TRC must be calibrated. Calibration is accessed from the Service Menu (i.e., press SEL with Calibration highlighted).
SKY899 Installation Manual 4.4.4 Ground Test Ground Test initializes the system for on-the-ground testing. Select Ground test from the Service Menu (i.e., press SEL with Ground Test highlighted). NOTES 1. When the system is set to GROUND TEST, the barometric altimeter is simulated to 50,000 ft and the heading simulated to 0 degrees.
SKY899 Installation Manual Configuration Management menu allows you to archive (save) system configuration to a compact flash, retrieve system configuration from a compact flash, restores system configuration to factory defaults or update system software. To access configuration management, select it from the Service Menu. (Refer to figure 4-40 for compact flash insertion instructions.
SKY899 Installation Manual To insert the compact flash, perform the following steps: 1. Remove power from the SKY899 system. CAUTION Removing or inserting the data card while the TRC899 is powered on may result in damage to the card. 2. At the TRC899 (see figure 4-40), open the memory card door and insert compact flash into J12 connector.
SKY899 Installation Manual Figure 4-41: Service Menu Tree (Sheet 1 of 3) 009-11900-001 Maintenance - Page 4-21 Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual Figure 4-41: Service Menu Tree (Sheet 2 of 3) Page 4-22 - Maintenance 009-11900-001 July 18, 2013 Revision F The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual Figure 4-41: Service Menu Tree (Sheet 3 of 3) 009-11900-001 Maintenance - Page 4-23 Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual 4.5 TROUBLESHOOTING Table 4-2 is intended to assist trained electronic technicians to determine which assembly is inoperative. Do the corrective action steps in the order described. Use the Service Menu (refer to paragraph 4.4) as an aid in fault isolation. Information available from the service menu can help identify conditions that need to be resolved.
SKY899 Installation Manual Table 4-2: Fault Isolation (Continued) SYMPTOM CORRECTIVE ACTION WX-1000 processor has been removed for service; Check position of the WX-1000 maintenance switch SKY899 fails to operate. (NORMAL/OVERRIDE). When the WX-1000 has been removed for service, it should be set to the OVERRIDE position.
SKY899 Installation Manual Table 4-3: Installation Related Error Messages (Continued) ERROR NO. MESSAGE REMARKS ERROR 15 RF Angle Error Check directional antenna and associated cables. Calibrate directional antenna (para 4.4.3) NOTE Ensure transponder is in standby and DME is OFF while doing calibration Cycle power and run pilot initiated self-test.
SKY899 Installation Manual 4.7 TRC899/WX-1000 ADAPTER PLUG An adapter plug can be used to by-pass SKY899 only if a WX-1000 Stormscope system is installed. The adapter will permit continued operation of the WX-1000 if the TRC899 is removed for service. It can also be used as a troubleshooting tool when attempting to isolate a problem to either or both systems.
SKY899 Installation Manual 4.8 RETURN TO SERVICE The installation checkout procedures will validate the return to service of the SKY899. Table 4-5 lists the proper return to service checkout procedures to use. Table 4-5: List of Return to Service Checkout Procedures Display Flightline Tester Checkout Procedure...
SKY899 Installation Manual b. Connect the Probe (Bit) port antenna connector (P10 - a BNC connector identified with a black band) to connector J10. c. Connect the Difference (Delta) port antenna connector (P11 - a TNC connector identified with a red band) to connector J11 (identified with red marking).
SKY899 Installation Manual 1. Connect the blue TNC antenna cable to the Sum port of the antenna (blue band). 2. Connect the red TNC antenna cable to the Delta port of the antenna (red band). 3. Connect the BNC antenna cable to the Bit port of the antenna. 4.
SKY899 Installation Manual 4.9 DISPOSITION OF FAILED ITEMS Return defective components to your authorized L-3 Avionics Systems dealer or to: L-3 Communications Avionics Systems, Inc. Attn: Customer Service 5353 52nd Street, S.E. Grand Rapids, MI USA 49512 If available, pack components in their original shipping container. If the original container is not...
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SKY899 Installation Manual Appendix A SKY899 Interface Signal Name & Cable Characteristics A.1 INTRODUCTION This appendix defines the electrical characteristics of all input/output signals to the TRC899 and the labels for the ARINC-429 data bus. Sufficient data is included to perform an electrical load analysis for the aircraft.
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SKY899 Installation Manual SIGNAL CHARACTERISTICS Altitude (Gilham Code) / CABLE Minimum 22 AWG wire for lengths up to 30 ft. Encoding Altimeter Input VOLTAGE +30 V input max. (Continued) CURRENT <1 mA sourced per line. FREQUENCY <100 Hz SOURCE Z >10 kΩ...
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SKY899 Installation Manual SIGNAL CHARACTERISTICS ARINC-429 External Interface The SKY899 has seven ARINC-429 receivers and three ARINC-429 transmitters (paragraph 2.9). Four of the channels are paired internally and can operate at either low speed (12.5 kHz) or high speed (100 kHz). However, the paired channels must be set to the same speed.
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SKY899 Installation Manual SIGNAL CHARACTERISTICS Audio (Alert) Output This output is directly compatible with industry standard audio panels (see paragraph 2.10) NOTE Audio output from the TRC is transformer isolated. This output is disabled when a terrain warning alarm is detected (see paragraph 2.7.1) CONNECTION Connector-Pin...
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SKY899 Installation Manual SIGNAL CHARACTERISTICS GPWS This input senses a terrain warning alarm and temporarily disables the (Audio Inhibit) SKY899 audible alert messages until the warning clears (see paragraph 2.7.1). The input can be either a constant flag signal or an alternating flag output.
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SKY899 Installation Manual SIGNAL CHARACTERISTICS Heading Input These connections from the aircraft heading source (ARINC 407 & 407-1 (XYZ Synchro) Synchro System Manual) allow the unit to rotate the displayed data as the aircraft turns. See Heading Flag in this appendix for flag input specifications.
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SKY899 Installation Manual SIGNAL CHARACTERISTICS Horizontal Sync Balanced horizontal sync from the WX-1000 Processor (if installed) and output to the WX-1000/SKY497 display. Signal levels as specified in RS-422. CONNECTION Connector-Pin Signal Name P1-28 (HSYNC_IN+) From Processor P1-29 (HSYNC_IN-) From Processor P1-11 (HSYNC_OUT+) To Display P1-12...
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SKY899 Installation Manual SIGNAL CHARACTERISTICS Operational Mode Output Operational mode output can drive a lamp annunciating when the system (optional) is in operational mode. Output is switched to ground when system is in operation mode. The lamp requires a separate dc source (constant or dimming circuit).
SKY899 Installation Manual SIGNAL CHARACTERISTICS Radio Altimeter (Analog) FLAG VOLTAGE Active Low: (ref. to aircraft electrical ground) (continued) Valid signal: -5 V dc to +2.5 V dc Invalid signal: +9 V dc to +32 V dc or open Active High: (ref. to aircraft electrical ground) Valid signal: +9 V dc to +32 V dc Invalid signal: -5 V dc to +2.5 V dc or open...
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SKY899 Installation Manual SIGNAL CHARACTERISTICS SKYWATCH/STORMSCOPE If a WX-1000 processor is installed, this signal (SW1 on the Interconnect (SW1) wiring diagram, figure 2-3) switches the display between the WX-1000 and SKY899. Any general purpose SPST toggle switch can be used. CONNECTION Connector-Pin Signal Name...
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SKY899 Installation Manual SIGNAL CHARACTERISTICS Squat Switch Input This signal line is to be connected to the squat switch to sense when the (Weight-On-Wheels) aircraft is on the ground (see paragraph 2.7.3). The state of the switch can be active low or active high in reference to aircraft ground. The switch status can be none, active low or active high, this is selected via service menu.
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SKY899 Installation Manual SIGNAL CHARACTERISTICS System Configuration CONNECTION Connector-Pin Signal Name Module (Continued) P1-2 3.3V P1-92 PLUG_GND P1-99 P1-100 CABLE Minimum 22 AWG wire for lengths up to 30 ft. Vertical Sync Balanced vertical sync from the WX-1000 Processor (if installed) and output to the display.
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SKY899 Installation Manual SIGNAL CHARACTERISTICS Future Options The following connections are reserved for future use. THESE PINS MUST REMAIN UNCONNECTED. CONNECTION Connector-Pin Signal Name P1-1 +5 V P1-3 -15 V P1-32 DI02 P1-77 RS422_TXA P1-78 RS422_TXB P1-79 RS422_RXA P1-80 RS422_RXB P1-86 RS232_TX2 P1-87...
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SKY899 Installation Manual Figure A-1: I/O Connector P1 Pin Assignments 009-11900-001 Appendix A - Page A-15 (A-16 blank) Revision F July 18, 2013 The document reference is online, please check the correspondence between the online documentation and the printed version.
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SKY899 Installation Manual A.3 ARINC-429 LABELS The various interface equipment and their ARINC-429 labels (accepted and transmitted) are listed in tables A-2 and A-3. Not all labels listed are required at this time, but may be required for future options and are included for reference only.
SKY899 Installation Manual Table A-3: ARINC-429 Output Labels (Tx) Equipment Data Label DITS Control External Display Altitude Select Limits ARINC-735 TCAS I Formatted Traffic Data DITS Control Intruder Range Intruder Altitude Intruder Bearing Own A/C Altitude. Vertical RA Transponder Control Own A/C Heading Fault Summary (RTS) Request To Send...
TSO-C147, Class A. and TSO-C118 PART NO: 805-11900-001 APPLICABLE SPEC NO: RTCA/DO-197A MANUFACTURER: L-3 Communications Avionics Systems, Inc. ADDRESS: 5353 52nd St. SE, Grand Rapids, MI 49512-9704 Revision and change number of DO-160: DO-160D (RF Susceptibility to Chg 1) DO-160C (Vibration, section 8.5)
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SKY899 Installation Manual CONDITION SECTION- TEST CATEGORY PARAGRAPH Vibration Equipment tested to DO-160C Category N, using vibration test curve N for rotor wings. Critical frequencies for sinusoidal test, curve N: X axis: 54.66Hz @ 7.67G 61.63Hz @ 8.89G 359.06Hz @ 2.13G 1952.6Hz @ 2.14 G Y axis: 136.7Hz @ 3.71G...
SKY899 Installation Manual WX-1000/SKY497 Display Environmental Qualification Form (continued) SECTION/ CONDITION TEST DESCRIPTION PARAGRAPH Radio Frequency Emission 21.0 Tested to Category A Lightning Induced Transient 22.0 Category X - No test required Susceptibility Lightning Direct Effects 23.0 Category X - No test required Icing 24.0 Category X - No test required...
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SKY899 Installation Manual Appendix C Installation Checkout Using the TCAS-201 Ramp Test Set C.1 INTRODUCTION This section contains checkout procedures that will validate installation and return to service of the SKY899 using the TCAS-201 Ramp Test Set (with TCAS I firmware). This procedure provides test setup data for the TCAS-201 ramp test set;...
SKY899 Installation Manual CHECKOUT PROCEDURE If the indications given in the following steps, except for the ramp test set, are not obtained, refer to the troubleshooting procedures in Chapter 4. If indications given for the ramp test set are not obtained, refer to the manual supplied with that equipment.
SKY899 Installation Manual Figure C-2: Start-up Screen After approximately thirty seconds the display will show the STANDBY screen (see figure C-3). NOTE If the TRC has not been calibrated to the directional antenna the display may show a “SKY899 FAILED” message. Calibration will be done during system setup verification and operation.
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SKY899 Installation Manual Return to the Service Menu (paragraph 4.4) and select Information. From the Information menu, select Data Monitor. The Data Monitors menu will appear. 10. Select each of the data monitors and verify the sensor information is correct (see paragraph 4.4.2.3): Change the status of the extended audio switch, landing gear, squat switch, altitude, and heading sensors.
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SKY899 Installation Manual NOTES 1. If the display reflects a gross error in target bearing, check the directional antenna cables at TRC connectors J9 (sum port) and J11 (difference port). They may be reversed. A further indication of this condition would be a target that moved in a counter-clockwise direction when the test set is moved in a clockwise direction.
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SKY899 Installation Manual Appendix D Installation Checkout Using the TIC T-49C Flightline Tester D.1 INTRODUCTION This section contains checkout procedures that will validate the installation and return to service of the SKYWATCH® HP SKY899 using the TIC T-49C Flightline Tester. Detailed setup, operation and maintenance information for the T-49C Flightline Tester is provided in the T-49C Operating and Maintenance Instruction Manual.
SKY899 Installation Manual D.3 CHECKOUT PROCEDURE The T-49C Flightline Tester simulates ground based secondary surveillance radar (SSR) when the TCAS INTRUDER selector switch is in the ATCRBS/Mode-S XPDR TEST position. When the T-49C intruder type switch is set to ATCRBS, the unit responds to ATCRBS Mode C interrogations. A varying delay time, controlled from the microprocessor, delays the replies returned to the SKY899 from as far as 14 nautical miles and as close as a few hundred feet.
SKY899 Installation Manual Figure D-3: Standby Screen Perform System Setup in paragraph 3.3.1. (If System Setup has already been done, proceed to next step.) Turn SKY899 OFF and then enter the Service Menu (see paragraph 4.5) by holding the left two buttons (soft-keys 1 and 2) depressed as the system is turned ON.
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SKY899 Installation Manual problems. Locate and mark test points at 30 degree intervals (i.e., 000, 030, 060, 090, 120, 150, 180, 210, 240, 270, 300, and 330 degrees) with respect to the SKY899 directional antenna. Mark these points at the same distance, approximately 100 ft. (or less), from the aircraft. 18.
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SKY899 Installation Manual d. Move the T-49C to each test point and verify that the display shows the corresponding bearing displacement. NOTE It is necessary to wait a few seconds after moving to let the test target stabilize in position. 21.
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SKY899 Installation Manual Appendix E Using the Terminal Device (e.g., Laptop Computer) When interfacing to an alternate display a terminal device must be used to access the service menu for system configuration, testing and troubleshooting of the SKY899. Connect terminal device to the RS-232 serial data TEST port (J7) located on the front of the TRC899.
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SKY899 Installation Manual Special laptop commands designed for field service engineering are hidden in the system. Typing help or ? at the prompt will cause the following list to appear. These commands should only be used by factory personnel and are not supported in this manual. COMMANDS DESCRIPTIONS ? or Help...
SKY899 Installation Manual Appendix F Installation Checkout Using an Alternate Display F.1 INTRODUCTION This section contains checkout procedures that will validate the installation and return to service of the SKY899 when interfaced to an alternate display (e.g., EFIS, IVSI, L-3 Avionics Systems RGC250, MFD, etc.) using the TT-391 Flightline Tester.
SKY899 Installation Manual Table F-1: Lamp/Annunciator & Switch Function LAMP/ANNUNICATOR FUNCTION ABOVE (ABV) - Look up +9000 ft. ABV lamp only is on when in the above vertical mode. (External lamps see figure F-1.) BELOW (BLW) - Look down -9000 ft. BLW lamp only is on when in the below vertical mode.
SKY899 Installation Manual NOTE After power up, it may take a couple of minutes for the altitude encoder to return a valid altitude to the transponder and SKY899. 3. Turn SKY899 ON. 4. Verify start up screen, similar to one shown in Figure F-2, is displayed on the terminal device. Welcome to the L-3 Avionics Systems SKYWATCH HP Copyright (c) 2003 L-3 Avionics Systems, Inc.
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SKY899 Installation Manual 3. From the Setup menu, select Aircraft Type (1 <Enter>). Setup 1 Aircraft Type 2 Antenna System 3 Audio Level 4 Arinc 429 Ports 5 Avionics Equipment x Back Choice: a. From the Aircraft Type menu, select fixed wing (1 <Enter>), (rotorcraft is provided for future option, do not select at this time).
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SKY899 Installation Manual 5. From the Setup menu, select Audio Level (3 <Enter>): Test the audio level by selecting Test (3 <Enter>). Verify the aural “Traffic, Traffic” message is heard at a comfortable level (adjust level per step b below). Set the desired audio level using the Up (1 <Enter>) and Down (2 <Enter>) selections (level is adjusted in 5% increments).
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SKY899 Installation Manual Arinc 429 Rcvrs 0 Autodetect 1 Ch.1: GPS 2 Ch.2: Multi 3 Ch.3: NoType NoSpeed 4 Ch.4: NoType NoSpeed 5 Ch.5: NoType NoSpeed x Back Choice: 8. To manually configure each receiver channel: a. With all (ARINC 429 source) avionics equipment turned on, select the ARINC 429 receiver channel to be configured.
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SKY899 Installation Manual 9. From the Setup menu, select Avionics Equipment (5<Enter>): Equipment 1 Browse All Avionics 2 GPS Nav [None] 3 Magnetic Heading [None] 4 Barometric Altitude [Encoding Altimeter] 5 Radio Altitude [None] 6 Landing Gear [Active Low] 7 Weight-On-Wheels [Active Low] 8 Audio Suppression [Active Low]...
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SKY899 Installation Manual d. To verify changes made to the configuration module, cycle power to the SKY899. At terminal device enter the Service Menu (type Menu <Enter>). Then enter Setup menu (1 <Enter>), then enter Avionics Equipment menu (5 <Enter>) and verify all equipment shown selected is correct. e.
SKY899 Installation Manual F.3.3 Information Menu (Data Monitors) 1. Enter Service Menu, at terminal device type Menu <Enter>. 2. From the Service Menu, select Information (2 <Enter>). 3. From the Information menu, select Data Monitor (3 <Enter>). The Data Monitors menu will appear. Data Monitors 1 Arinc 429 2 Antenna Calibration...
SKY899 Installation Manual F.3.5 Ground Test 1. At the terminal device, enter the service menu by typing Menu <Enter>. 2. From the service menu, select Ground Test (4 <Enter>). Ground Test 1 Perform Ground Test x Back Choice: 3. From the Ground Test menu, select Perform Ground Test (1 <Enter>). 4.
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SKY899 Installation Manual CAUTION The Flightline Tester is not weatherproof when the lid is open. Do not setup or operate the Flightline Tester in conditions of rain, sleet, etc. 10. Setup and verify operation of the TT391 Flightline Tester: a. Open the chassis lid and remove the lid from the chassis by sliding the lid off of the hinge pins (sliding it to the right).
SKY899 Installation Manual Set SELF-TEST switch to center position (off). Set the POWER switch to the OFF position. NOTE Care should be taken to ensure that the Patch Antenna is connected to TT391 connector J1 and NOT J2. IF THE PATCH ANTENNA IS CONNECTED TO J2 THE TT391 WILL NOT FUNCTION CORRECTLY k.
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SKY899 Installation Manual d. Set the TT391 POWER switch to the OFF. Repeat procedure from each test point. Step 16 can be done from the last test point. NOTE To prevent SKY899 from tracking the movement of the test-set, it is necessary to set the TT391 POWER switch to OFF after completing each bearing measurement.
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HP SKY899 Permission to use STC SA01552CH-D for Raytheon C90 Consistent with FAA Order 8110.4C and AC21-40, L-3 Communications Avionics Systems, Inc. (hereafter L-3 Avionics Systems) grants permission to L-3 Avionics Systems dealers, installers, and ® owners of the SKYWATCH...
SKY899 Installation Manual Figure G-1: STC SA01552CH-D Cover Sheet Page G-2 - Appendix G 009-11900-001 July 18, 2013 Revision F The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899 Installation Manual Appendix H Installation Checkout Using the IFR-6000 Ramp Test Set H.1 INTRODUCTION This appendix contains checkout procedures that will validate the installation and return to service of the SKY899 installed with WX-1000 display using the IFR-6000 shown in Figure H-1. CAUTION Each time the TRC, directional antenna, or directional antenna cables (including connectors) are installed, removed or replaced, the TRC must...
SKY899 Installation Manual Figure H-2: IFR-6000 Test Set Basic Controls 1 – Multi-function soft-keys. 2 – Data Buttons. Moves screen curser up and down, left and right. 3 – Power Button, green. Once power has been applied, a green light will display above the power button. 4 –...
SKY899 Installation Manual 5. Using the NEXT PARAM and PREV PARAM softkeys to select on-screen functions, set each parameter as shown in Table H-1. Table H-1: TCAS Setup Page Parameters Function Parameter Notes RF Port ANTENNA ANT RANGE (Variable) Determine the distance from the test set position and the aircraft’s directional antenna.
SKY899 Installation Manual 6. Press TCAS Mode Key to return to TCAS Test Screen (Figure H-3). NOTE Intruding flight patterns are programmed from the TCAS screen and can be stored in one of sixteen user-named scenario data storage locations. Eight factory pre-defined scenarios are provided which may be recalled, modified and stored under a user named scenario.
SKY899 Installation Manual 8. Make sure the aircraft's transponder is in the STBY mode and the DME is turned OFF. Verify all avionics equipment interfaced with the SKY899 (i.e., GPS, ADC, AHRS, synchro compass, encoding altimeter) is turned ON and signal condition is valid. NOTE After power up, it may take a couple of minutes for the altitude encoder to return a valid altitude to the transponder and SKY899.
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SKY899 Installation Manual 12. From the Service Menu, calibrate the TRC to the directional antenna (see paragraph 3.3.2 and 4.4.3). 13. Cycle power to the SKY899 and verify the standby screen appears after approximately 30 seconds. Press OPR soft-key (4) and verify the MSG label does not appear on the display after 10 seconds. NOTE If MSG label is present press MSG soft-key (1) for degraded operation message and refer to Chapter 4 troubleshooting to isolate the problem...
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