LOGIC BOARD TEST SET.
W. F. Taylor · Defense Technical Information Center (DTIC) · 1968
The note describes a test set for checking plug-in logic boards or sub-assemblies for correct functioning before they are offered up to the main system. The design allows boards with up to 29 connections to be tested. With the use of a 30 x 20 cross-bar switch any permutation of the 29 connections can be accommodated. (Author)