APC RAID Subsystem SCSI-SATA II Specifications Page 87

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Falcon 24 Bay SCSI-SATA Installation and Hardware Reference Manual
B.4. Connecting the UPS to the Subsystem
B.4.1 Connect the PSU Module Power Cords
The three (3) power cords shipped with the subsystem must be plugged into the power
cord sockets in the rear of the PSU modules. The plug at the other end of the power cord
must be inserted into a socket on the UPS. Please refer to the documentation that came
with your UPS device to determine the location of these sockets. The UPS must then be
connected to main power.
B.4.2 Set the Baud Rate
The default baud rate for the COM 2 serial port is 38400 and must be changed to 2400 or
other rate specified by the UPS specifications. To see how to change the baud rate, please
refer to the Generic Operation Manual that came with the subsystem.
B.4.3 Connect COM2
The separate audio jack-to-DB9 serial cable is used to connect the COM2 ports on the
controller modules to the UPS directly. The cable is used to transmit UPS status updates
to the controller modules and will in turn determine the write policy of the controller
module. To connect the serial communication cable to the subsystem controller, insert the
audio jack connector on one end of the cable into the COM2 port on the controller
module. To see how to connect the DB9 connector to the UPS, please refer to the
documentation that came with your UPS.
Figure B-2: Connecting the UPS to the Subsystem
B-2 Connecting the UPS to the Subsystem
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