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Important Please read this manual carefully before using the device. Observe limitations and safety instructions. This manual is an essential portion of the device and must be kept in a safe place. Articles Covered This manual covers the following articles: AT-1 ‘‘AIR Tra c’’...
Contents Getting Started Introduction Safety Instructions and Limitations Switching On and O General Theory of Operation ADS-B In Replies by 1090 MHz Mode-S Transponders FLARM Collision Warnings Displaying Tra c Information Dedicated Cockpit Displays of Tra c Information Navigation and Electronic Flight Information Systems Wireless Connectivity to Tablets and Smartphones Audio Output and Discrete Switches Audio Output...
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avionics Contents Troubleshooting My AT-1 does not seem to power up. I am unable to connect via WiFi, the network is not visible. Bibliography AT-1 Pilot’s Manual rev. 4.0 2020/01/09...
Getting Started 1.1 Introduction The AIR Tra c (AT-1) by AIR Avionics is a tra c/electronic conspicuity system based on 1090 MHz receiving and FLARM transceiving technology. AT-1 uses 1090 MHz Mode-S transponder replies , 1090 MHz ADS-B broadcasts, and FLARM broadcasts to determine positions, ight vectors, and threat levels of other air tra c.
avionics 1. Getting Started 1.2 Safety Instructions and Limitations 1.2.1 Safety AT-1 shall never distract from general practices of safe airmanship. Using AT-1 may impose signi cant workload on the ight crew if not adequately familiar with AT-1 and trained on its use.
1. Getting Started 1.2.5 Liability IN NO EVENT WILL AIR AVIONICS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE OR INABILITY TO USE THE PRODUCT OR FROM DEFECTS IN THE PRODUCT.
General Theory of Operation 2.1 ADS-B In The AT-1 ADS-B In capability allows it to receive tra c data through a built in 1090 MHz Extended Squitter (1090 ES) receiver. Automatic Dependent Surveillance - Broadcast (ADS-B) is the automatic broadcast of position reports by aircraft, surface vehicles, and transmitters on xed objects.
avionics 2. General Theory of Operation and user interface clutter. Some cockpit displays only show information about the most relevant bearingless target if a collision threat is detected and a warning is given to the ight crew. Some display systems only display bearingless targets as a numerical value, for example: 5 miles / +500ft.
avionics 2. General Theory of Operation 2.5 Collision Warnings 2.5.1 Normal Collision Warnings AT-1 is able to calculate con icting ight patterns and to issue collision warnings. AT-1 warns about obstacles on the ground (cables, masts, etc.) if a current obstacle database is installed.
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avionics 2. General Theory of Operation 2.5.2 Protection Volumes In addition to calculated threat levels, several ‘‘protection volumes’’ can be de ned in the system con guration of the AT-1. Up to four di erent volumes can be con gured, each of which has di erent priorities.
AT-1 has been designed to work with the AIR Avionics AIR Tra c Display line of products (ATD-XX). AIR Tra c Displays o er comprehensive functionality and amongst others are capable of con guring the system con guration parameters of the AT-1.
avionics 3. Displaying Tra c Information The data interfaces from the AT-1 to the CDTI are con gured during the installation process. For detailed information on available interfaces, compatible CDTI systems, and their con guration, please consult the AT-1 Installation Manual [1]. 3.2 Navigation and Electronic Flight Information Systems AT-1 is compatible to most navigation systems (portable and panel mount) and electronic ight information systems (EFIS).
avionics 3. Displaying Tra c Information Other traffic target with bearing and altitude (3D position) Other traffic target , bearingless, only distance and altitude known own aircraft is not moving, own heading not available own aircraft is moving, own heading available Figure 3.2.: Left: A tra c target is shown as a 3D position when aircraft movement is present and, therefore, the own aircraft heading is known.
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3. Displaying Tra c Information Make Remarks iGlide/iPilot AIR Avionics – SkyDemon SkyDemon – AirNav Pro XAMPLE – Runways HD AIRBOX – SkyMap SkyMap – FlyMap Stau – EasyVFR PocketFMS – Fore ight FOREFLIGHT Please select the GDL90 data protocol 3.3.2 Establishing a Connection...
Situation Message Example Device power-on AIR Tra c + SOFTWAREVERSION ‘‘AIR TRAFFIC SIX’’ Warning TONE + DIRECTION + AZIMUTH + TARGET BEEP ‘‘10 O’CLOCK ABOVE GLIDER’’ Urgent Warning TONE + DIRECTION + AZIMUTH WOOTWOOT ‘‘10 O’CLOCK ABOVE’’...
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avionics 4. Audio Output and Discrete Switches AHEAD 9 O'Clock 3 O'Clock 6 O'Clock Figure 4.1.: Direction and azimuth indications in voice warning messages. Voice messages can be acknowledged by pushing an optional VOICE ACK button, or by pushing the inner knob pushbutton on a connected AIR Tra c Display (ATD). When acknowledging a tra c or obstacle warning message, all voice warning messages, generated by the speci c target, are supressed for ve minutes.
avionics 4. Audio Output and Discrete Switches 4.2 Discrete Switches AT-1 features discrete inputs that can optionally be used together with switches/buttons in the airframe or panel. Depending on the speci c installation, the following functions can be triggered using switches: MUTE –...
Flight Recording and Post Flight Analysis 5.1 Flight Recording AIR Tra c features an integrated ight recorder. It records the trajectories of the own aircraft and received tra c targets. It stores this information on a per- ight basis, one data le per ight.
AT-1 transmits a software version identi cation over its data interfaces and over the voice audio output. These informations can be displayed in compatible displays like, for example, the AIR Avionics AIR Tra c Displays. 6.2 Software/Database Loading Software updates and the obstacle database are loaded using a USB thumb drive (USB stick).
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avionics 6. Software and Database Updates 3. Insert the USB thumb drive into the AT-1 or the jack of the installed USB extension cable while AT-1 is powered o . 4. Power the AT-1 on. The database is automatically loaded. When the database license expires, the database can no longer be used and database functions are no longer available.
System Status AT-1 features a range of built-in self test features that continuously monitor system state and the state of connected systems to detect failures. The detection of a failure is always transferred to connected cockpit systems and additionally displayed using the built-in status LEDs. Additionally, failures can be reviewed in the AT-1 con guration webpage.
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avionics 7. System Status 2. Status LED 2 shows the status of the integrated FLARM transceiver module. 3. Status LED 3 shows the status of the integrated GPS receiver module, the integrated WiFi module and the general system state. 7.1.3 Lighting Patterns Normal Operation: Status LED 1 Status LED 1 Pattern...
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avionics 7. System Status Normal Operation: Status LED 2 Status LED 2 Pattern LED 2 Color Fatal error/failure, FLARM transceiver module unavailable. FLARM software incompatible or expired. Last dataset from FLARM transceiver module has been received over 30 seconds ago. Last dataset from FLARM transceiver module has been received over 3 seconds ago.
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avionics 7. System Status Normal Operation: Status LED 3 Status LED 3 Pattern LED 3 Color Fatal error/failure, AT-1 main system unavailable. Fatal error of GPS or WiFi, for example, GPS antenna not connected Last GPS position has been received over 30 seconds ago or never.
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avionics 7. System Status Status LED Patterns for Maintenance Operation Status LED 1 LED 2 LED 3 Searching for USB thumb blue blue blue drive after power-on Reading con guration from blue blue USB thumb drive Reading con g. from USB blue blue green...
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avionics 7. System Status Bootloader/Update Operation Situation LED 1 LED 2 LED 3 Initializing bootloader magenta Bootloader initialized magenta successfully Flash checked: no magenta magenta application installed Flash checked: magenta application installed ok Flash checked: magenta magenta magenta incompatible application Bootloader processing a magenta magenta...
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Troubleshooting 8.1 My AT-1 does not seem to power up. IS the ENABLE pin pulled to GND correctly? In most con gurations, the ENABLE pin on the front or rear connector has to be connected to a GND pin. Please consult the AT-1 installation manual [1] for details.
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Bibliography [1] AIR Avionics, AT-1: Installation Manual, August 2018. AT-1 Pilot’s Manual rev. 4.0 2020/01/09...
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