This article is about capture of data from avionics buses and networks. For monitoring of conduct of bus passengers, see Bus monitor.
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Bus monitoring is a term used in flight testing when capturing data from avionics buses and networks in data acquisition telemetry systems. Commonly monitored avionics buses include
ARINC Standard buses such as ARINC-429,[1] ARINC 573, ARINC 717
ARINC 629 also known as Multi-transmitter Data Bus
ARINC 664 also known as Deterministic Ethernet
ARINC 825 Controller Area Network (CAN)
Common Airborne Instrumentation Systems (CAIS)
Cross Channel Data Link (CCDL) / Motor Controller Data Link (MCDL)
Ethernet
Fibre Channel
Firewire, IEEE 1394
IRIG-106 PCM
MIL-STD-1553
RS-232/RS-422/RS-485
STANAG-3910
Time-Triggered Protocol (TTP)
Typically a bus monitor must listen-only on the bus and intercept a copy of the messages on the bus. In general a bus monitor never transmits on the monitored bus. Once the bus monitor has intercepted a message, the message is made available to the rest of the data acquisition system for subsequent recording and/or analysis.[2]
There are three classes of bus monitor:
Parser bus monitor
Snarfer bus monitor
Packetizer bus monitor
^"ARINC 429 Tutorial" (PDF). Condor Engineering. Archived from the original (PDF) on 2011-07-10. Retrieved 2011-02-28.
^"Metadata for Flight Test Instrumentation Systems".
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