KAD/ABM/103 ARINC-429 Bus Monitor Parser/Packetizer

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The KAD/ABM/103 is an ARINC-429 bus monitor which combines the capabilities of a coherent message parser with the flexibility of an iNET-X packetizer and an error-detection function, on a single module.

The parser parses up to 8,191 words and their associated time and status tags. Each message has a stale bit (word read before) and a skipped bit (buffer overwritten). Messages can be parsed based on their bus number, label, SDI and/or SSM fields.

Every ARINC-429 message received from each of the 24 busses is captured and packetized, along with time tags and a bus tag, with other received messages in a packetizer buffer. The packetizer contents can be assembled into Ethernet frames by an iNET-X controller or transmitter, for example, a KAD/BCU/140, for transmission over Ethernet. The module can generate a single packet per input bus or packetize messages from all the active busses into a single packet stream.

To ensure efficient use of bandwidth, packets are only generated once a threshold amount has been stored (a maximum of 84 received messages are stored in each packet). Additionally, a programmable timeout ensures that smaller packets are generated even during periods of low activity on the bus, thereby allowing real-time analysis and processing of acquired messages. When there is no traffic, no packets are generated.


  • Monitors up to 24 ARINC-429 busses
  • Coherently parses traffic and tags for up to 8,191 messages
  • Aperiodic transmission of packetized ARINC-429 messages including tags as iNET-X parser-aligned, IENA D Type, or IENA N Type
  • payload structures per channel or per instrument
  • Detects six types of errors
  • Word counter for each bus


  • ARINC-429 monitoring and recording
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KAD/ABM/103 ARINC-429 Bus Monitor Parser/Packetizer

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