Manufacturers of Quality Mil-Std-1553 Avionics Equipment
Frequently Asked Questions
What is MIL-STD-1553?
MIL-STD-1553 is a government standard that describes a serial communication network used for avionics integration. In laymens terms, the communication network or digital Data Bus as it is known, is basically a militarized local area network (LAN). The major components of a MIL-STD-1553 data bus are as follows:
Bus Controller (BC)
Controls information flow on the Data Bus
Remote Terminal (RT)
Embedded / Standalone - react to the messages sent via the bus controller & integrate subsystems to the bus
Bus Monitor (BM)
Used for monitoring and testing the bus, while providing data acquisition capability
Data Bus Hardware
Cable
Is the actual Data Bus, which is a shielded, twisted pair of wires that carry the signal. The cable has an impedance of 78 ohms.
Facilitate connecting and isolating components/subsystems to/from the main Data Bus.
Terminators
Used to terminate or "close" both ends of the bus, typically 78 ohms.
Connectors /
Adaptors
Provide an electro-mechanical interface to the bus via a variety of concentric twinaxial type devices.
Relays
Switching devices used to connect/disconnect portions of the data bus or selected RT's
Need information on a typical MIL-STD-1553 test set-ups? Click Here to View/Print illustrations for typical test set-ups.