Sample Power Bus Configuration; Power Control Bus - DEC 4000 AXP Service Manual

Figure 6–12 Sample Power Bus Configuration
System
Table 6–2 Power Control Bus
Connector Function
MO The main out (MO) connector sends the power control bus signal
to the expander. One end of a power bus cable is connected here;
the other end is connected to the secondary in (SI) connector of an
expander power supply.
SI The secondary in (SI) connector receives the power control bus
signal from the main power supply. In a power bus with more than
one expander, the power control bus signal is passed along using
the secondary in and out connectors as shown in Figure 6–12.
SO The secondary out (SO) connector sends the power control bus
signal down the power bus for configurations of more than one
expander.
6–24 System Configuration and Setup
Expander 1 Expander 2
LJ-02488-TI0