The MIL-STD-1553 data bus is a relatively simple network protocol used to share data between avionics subsystems. Unfortunately, simple mistakes and misunderstandings of bus connections often lead to system integration problems and wasted time. The purpose of this Application Note is to provide the basic information to connect a 1553 network properly. This information is not specific to Condor Engineering products, but applies in general to 1553 networks. This Application Note assumes a basic knowledge of 1553. For information on the MIL-STD-1553 protocol refer to the “MIL-STD-1553 Tutorial” document available from Condor Engineering Inc. Additional information can also be found in MIL-HDBK-1553A.