Tripp-Lite SmartOnline SU750XL Guide De L'utilisateur page 10

Basic Operation
Telephone/Network Protection Jacks: These jacks protect your
equipment against surges over a telephone/network data line. Connecting
your equipment to these jacks is optional. Your UPS will work properly
without this connection. Not compatible with PoE (Power Over Ethernet)
applications.
Communications
Communications Ports (USB or RS-232): These ports connect your UPS
to any workstation or server. Use with Tripp Lite's PowerAlert Software and
included cables to enable your computer to automatically save open files
and shut down equipment during a blackout. Also use PowerAlert Software
to monitor a wide variety of AC line power and UPS operating conditions.
Consult your PowerAlert Software manual or contact Tripp Lite Customer
Support for more information. See "USB and RS-232 Serial
Communications" in the "Optional Connections" section for installation
instructions.
Dry contact communications are simple, but some knowledge of
electronics is necessary for configuration. The DB9 port's pin assignments
are shown in the diagram. If the UPS battery is low, the UPS sends a signal
by bridging pins 1 and 5. If utility power fails, the UPS sends a signal by
bridging pins 8 and 5. To remotely shut down the UPS, short pin 3~pin 9
for at least 3.8 seconds.
EPO (Emergency Power Off) Port: Your UPS features a EPO port that
may be used to connect the UPS to a contact closure switch to enable
emergency inverter shutdown. See Optional Installation for more
information.
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