Units Under Test (UUTs) are attached to the coupler on each of
5 Stub ports. The 1553 bus is created within the coupler body. Its
origin and end points are located at the coupler body ends. The
PC with the installed 1553 interface card is typically set-up to
be the Bus Controller (BC). It executes a pre-established test to
verify successful passage of command words to the UUTs. The UUTs
responses are expected back in logical order and timed with the
respective status word(s).
simple test set-up verifies the connection points at each UUT; the
cable; each stub port of the coupler; and its coupling on to the
established bus; and the proper bus impedance of 78 ohms.
strength and waveform can be examined with attachment of a scope
(50) ohm on to an open stub port. (See Data Products Application
Note: Bus Scope Test)