AIM AVI429-32 32-Channel ARINC429 Interface Module for VME

The AIM AVI429-32 is a 32-channel ARINC429 interface module for VME systems engineered to simulate, test, and monitor ARINC429 data buses in aerospace and defense applications. Built on a 6U VME form factor with 64-bit master/slave capability, the module delivers full concurrent operation across all channels at independent transmit and receive configurations. Powered by onboard RISC processors and 128 MB of global RAM, it handles complex bus traffic scenarios and advanced signal analysis without performance compromise.

Technical Specifications

• Channels: 32 ARINC429 channels, software-configurable for transmit or receive


• Data Rates: 100 Kbits/s (high speed) or 12.0–14.5 Kbits/s (low speed), software-programmable


• Processing: Powerful RISC processors with 128 MB global RAM


• VME Interface: 64-bit with master and slave capability


• Time Stamping: 1 µs resolution on received messages; 32-bit timer with selectable 1–255 µs resolution


• Time Synchronization: Onboard IRIG-B time encoder/decoder with external master clock sync and free-wheeling mode


• Transmitter Output Impedance: 75 ± 5 ohms, balanced between Line A and Line B


• Discrete I/O: Up to 8 general-purpose GPIO signals for monitoring or control

Key Features

• Dual-mode bus operation: Receive-Modify-ReTransmit (loop/pollution mode) supported


• Intelligent transmitter sequencing: cyclic, acyclic, and FIFO modes


• Label-selective trigger for capture and filtering on receive channels


• Rate-oriented label transmission


• Software-controlled rise and fall times for high-speed and low-speed operation


• Full ARINC429 error injection and detection on both transmit and receive channels


• Bi-Polar RZ format transmission (tri-level state modulation)


• FIFO buffering of received, time-stamped data

Typical Applications

• ARINC429 bus simulation and emulation in aircraft avionics systems


• Real-time monitoring and analysis of digital air data and flight management systems


• Integrated test platforms for embedded aerospace and defense systems


• Multi-channel signal injection and fault-tolerance validation

Compatibility & Integration

• VME 6U form factor for direct integration into avionics test racks


• Adapter cables: SCSI68 to D-Sub37 (ARINC429), D-Sub15 (trigger I/O and IRIG-B), D-Sub25 (discrete I/O)


• External IRIG-B master clock synchronization


• 64-bit VME slave and master operation for flexible system architectures