PAC-429C-X8C/R Pacific Avionics ARINC-429 Interface Module

The Teledyne Controls / Pacific Avionics PAC-429C-X8 Series ARINC-429 Interface Modules are available in B or C size, to provide a high performance communications link between a VXI host and an ARINC 429 Data Bus. The X8 Series modules are factory configured as either register or message based devices.

The modules' architecture is a multiprocessor design that provides reliable high-integrity ARINC 429 reception and transmission. This module is designed for high performance applications, capable of off-loading tasks from the host computer that could not previously be performed by a single ARINC 429 interface module.

The X8 modules conform with the Mark 33 Digital Information Transfer System 429-14 specifications, and are also capable of parametric testing that handles communications which deviate from the standard specification. This is useful during test and validation phases of LRU development, and at repair depots for margin testing to detect "phantom" errors and failures.

The modules support eight "configurable" parametric channels that can be set as either receivers or transmitters. When acting as transmitters, these channels can output signals from 0 to 12 Volts.

Transmitters or receivers can be configured for variable word sizes (2-bits), appropriate parity (EVEN/ODD/NONE), variable frequency (5 kHz-120 kHz), and variable bit gap.

In addition to the eight configurable channels, the modules also provide eight low speed receiver channels, for a total of up to 16 independent ARINC 429 channels.

The modules can filter received data and schedule transmitted data as determined by the host computer. All of the PAC-429 X8 modules have a Floating-Point Co-Processor used to convert data to and from engineering units, which allows the host to communicate data to the module in engineering unit format.