User guide

14797 • November 2004 • S5000 System Theory of Operation
Page 20
S5000 SYSTEM THEORY OF OPERATION
See Figure 12. The S5000 frame is a relatively simple system consisting of a metal rack
frame, replaceable I/O backplanes on each side of the back of the frame, a power
distribution board, and a motherboard. A variety of modules may be inserted into the
frame as desired to create a complete signal distribution and processing system.
The I/O backplanes hold the BNC or Phoenix I/O connectors to which the external
input/output cables are connected. The plug-in DA modules are fitted with connectors
that plug into the backplane BNC or Phoenix connectors to carry I/O signals onto and
off of the modules.
A rear motherboard (EM0328) inside the center rear of the frame connects to the I/O
modules and, in the case of video cards, connects directly to processing modules via
connectors at the corner of each module cell. Reference signals, DC power, and other
signals are carried between modules via the motherboard.
A Power Distribution board (EM0326) inside the center rear of the frame connects the
external AC power connectors to the Power Supply modules.