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MIL-STD-1553 is a military standard published by the United States Department of Defense that defines the mechanical, electrical, and functional characteristics of a serial data bus.
developed the Mil-Std-1553 data bus standard that is still in use today.” (Ref1) Today, 1553 is regarded as a low speed computer interconnect standard that can be developed with readily available, low-cost commercial components and is ideal for environmentally harsh environments (especially environments with electrical noise).
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MIL-STD-1553B Data Bus Requirements. Purpose & Application of Bus Couplers. The purpose of the bus coupler is to reduce reflections and maintain signal impedance levels. Since directly coupled devices (without couplers) do not provide any DC isolation or common mode rejection, direct connection to the bus should be avoided.
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The military standard MIL-STD-1553, or Digital Internal Time Division Command/Response Multiplex Data Bus, was first released in 1973 and solidified the federated digital avionic architectures for the military while multiple ARINC 429 buses were still leveraged more often in the commercial arena.
Message traffic on the 1553 bus consists of command, data, and status words with the format shown in Figure2.0.0-II. Figure 2.0.0-II: Word Formats MIL-STD-1553 defines 10 types of transfers as shown in Figure2.0.0-IIIand2.0.0-IV. Each transfer is composed of control words (command and status) and data words and is always initiated by the BC.
The Bus works has a fixed data rate of 1 Mbits/s and is typically implemented as a dual standby redundant architecture. MIL-STD-1553 defines three types of bus users, called terminals: Bus Controller (BC), Remote Terminal (RT) and Bus Monitor (BM). The transaction on the bus is of type Command/Response.
Learn about the military specification for a digital data bus that connects remote terminal devices with a bus controller. Find out the history, structure, components, and applications of MIL-STD-1553B.
