In many cases, a 1553 bus analyzer or bus monitor is perfectly adequate for troubleshooting a 1553 network. However, there are times when you may need to use an oscilloscope to know exactly what is happening on your bus. The purpose of this Application Note is to provide the basic information to connect an oscilloscope to the 1553 network and to describe the results of using the oscilloscope. This information is not specific to Abaco products, but applies in general to 1553 networks. This Application Note assumes a basic knowledge of 1553 and usage of oscilloscopes. For information on the MIL-STD-1553 protocol refer to the “MIL-STD-1553 Tutorial” document available from Abaco.