Arinc-429 Avionics Products

Features
Overview
Product Specifications
Ordering Information
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	Portable USB Device
	On Board resources (200 MHz processor, 64Mbytes RAM,16Mbytes Flash, 256Mbytes NAND Flash)
	Available in a combination of 2Tx / 4Rx Channels
	GPS Synchronization Capability (optional)
	8 User programmable Discrete Ios
	Supports up to max 12 Channels
	> 4 Transmit Channels > 8 Receive Channels
	Configurable for High Speed/Low Speed
	128 x 32 bit Static RAM Interface on each Arinc429 node
	Programmable interrupts Receive Data time-stamping
	Transmit Data Scheduling (Asynchronous/Synchronous) messages
	Two 32 x 32 Transmit FIFO on each Arinc429 node
	Graphical User Interface Software for Bus Analysis and Simulation
	Software Driver support Windows XP, Windows 7, Linux, RT Linux

The AT-USB-429 module is a small, portable, USB device that provides a flexible, powerful ARINC429 avionics data bus interface for the development and maintenance of commercial avionics. The unit is designed to transmit and receive messages up to 12 channels. Each channel is software configurable for high or low speed (12.5k or 100k bits per second) and ARINC429 protocol requirements. The ARINC data word can be decoded and sorted based on the Label and SDI bits and stored in RAM and/or FIFOs. Having extensive functionality, they are used to communicate with, simulate, test, and monitor ARINC429 equipment and systems. The unit has onboard resources to compute time tags, handle data scheduling and offload the host from ARINC communication overheads. The unit comes with powerful software that reduces development time. All data bus functionality is supported from our advanced API (Application Programming Interface) and VIP (Virtual Instrument Panel).

Hardware

The AT-USB-429 module can be configured up to 2 nodes with ARINC429 controllers from DDC, each node containing 2 Transmit and 4 Receive channels, providing a maximum of 12 channels. Each controller has a 128 x 32 bit static RAM, four 32 (words deep) x 32 (bit) Receive FIFOs and two 32 (words deep) x 32 (bit) transmit FIFOs. Look-up tables loaded into RAM enable the modules receive circuitry to filter and sort incoming data by label and destination bit as well as provide multilevel data specific interrupts or hardware triggers. The receive channels allow for the storage of all selected Labels with status and time tag information (optional) appended to each word. The receivers allow for filtering and multi-storage modes of Data Words. The transmit channels operate via a transmit “instruction stack” which allows scheduling of data transmissions and reduces the need for host computer intervention. The discrete channels contain control I/O registers that are memory mapped and can be accessed in real time.

Power

The unit contains a DC power jack for connection to an external +12V power source. The DC jack is designed to interface with off-the-shelf AC adaptors.

Software

The AT-USB-429 software includes Drivers & APIs. The product comes with a powerful set of library functions to access the entire ARINC429 functionality. The drivers are designed in a modular fashion consisting of component functions and application functions. The user’s test program can be developed with few calls to the driver, by using the set of Application functions provided. Driver and high-level API libraries for Windows XP, Windows 7, Linux, RT-Linux are available. Sample applications are included.

ARINC429 Interface

	Supports up to 12 ARINC429 channels
	> 4 Transmit Channels > 8 Receive Channels
	128 x 32 bit Static RAM interface on each ARINC429 controller
	Programmable Interrupts
	Configurable Bit Format Control

Transmit Interface

	Programmable 12.5/100KHz bit rate
	Two 32 (words deep) x 32 (bit) Transmit FIFOs on each ARINC429 controller
	Major/Minor frame scheduling
	Independent data transmit by each channel
	Programmable data transmit rate for each channel
	Transmit FIFO Status Indicators
	Synchronous word transmission
	Programmable Inter word gap

Receive Interface

	Four 32 (words deep) x 32 (bit) Receive FIFOs on each ARINC429 controller
	Receive data rates can be programmed for channel 0 and 1 independent of channel 2 and 3 in each ARINC429 controller
	Reducing Receive Data Latency
	Label and Filtering & Sorting of data
	Storage of data
	Parity Error Checking & Reporting
	Receive FIFO status indicator
	Time tagging of received messages

Diagnostics

	Power-up Self test with status reports
	Testing of Memory Elements
	Testing Transmit/Receive functions
	Interrupt Function Testing
	Wraparound Test for each channel

Error Conditions

	Sequence Error
	Address Error
	FIFO Overflow Error
	Receive Data Parity Error
	ARINC Clock Error

Discrete Channels

	8 Discrete Inputs, TTL (0-5V)
	8 Open Drain Discrete Outputs, TTL (0-5V), max current of 100mA

GPS Receiver (optional) for Synchronization

	GPS receiver on-board for Synchronization
	Synchronization control through software
	Synchronization of on-board time tag counters with GPS time
	32 bit micro-second time tag counter synchronized with GPS
	Separate GPS antenna provided along with the unit

Software Support

Driver and high-level API libraries for Windows XP, Windows 7, Linux, RT Linux

Physical

	Durable Enclosure with covers for 429 connectors
	Approximate dimensions (135mm x 155mm x 32mm)

Environmental

	Operating temperature: 0° C to +50° C
	Storage temperature: -20° C to +70° C

Power

+12V External Powered through AC Adapter

Warranty

1 year limited warranty