10
INST
ALLA
TION
CONFIGURA
TION
OPERA
TION
FUR
THER
INFORMA
TION
INDEX
Switch connections:
Power
Each DDX switch is supplied with a single power adapter but offers the facility to use
a second input in order to provide operational redundancy. The DDX unit can operate
perfectly well from a single power adapter operating alone. When two adapters are
connected, the unit will spread its load between them; should one power input fail, 100%
of the load will be transferred to the other power adapter without a break in operation.
Remote checking of the power inputs is possible at any time via the browser interface -
see
Maintenance > Diagnostics
for details.
There is no on/off switch on the DDX unit, so operation begins as soon as power is
applied at either port.
To connect the power adapter
1 Attach the output plug of the supplied power adapter to
either power input socket on the left side of the rear panel.
2 Connect the
IEC connector of the supplied country-specific power cord to the socket
of the power adapter.
3
Connect the power cord to a nearby main supply socket.
4
Where power redundancy is required, repeat steps 1 to 3 for a second power adapter.
To disconnect the power adapter
1 Isolate the power adapter from the
mains supply.
Note: If you are replacing one of dual
power adapters during operation, it is
not necessary to also remove power
from the other adapter.
2
Grasp the outer body of the power
adapter plug where it connects with
the module.
3
Gently pull the body of the outer
plug away from the module. As the
body of the plug slides back, it will
release from the socket and you can
fully withdraw the whole plug.
IMPORTANT: Please read and adhere to the electrical safety information
given within the
Safety information
section of this guide. In particular, do not
use an unearthed power socket or extension cable.
Note: Both the modules and the power supplies generate heat when in operation and will
become warm to the touch. Do not enclose them or place them in locations where air cannot
circulate to cool the equipment. Do not operate the equipment in ambient temperatures
exceeding 40 degrees Centigrade. Do not place the products in contact with equipment whose
surface temperature exceeds 40 degrees Centigrade.
From the
power adapter
Gently pull back the plug outer
body to release the lock