Paradyne 9000 Series Installation Instructions Manual page 3

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HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES
This product is designed to protect sensitive components from
damage due to electrostatic discharge (ESD) during normal
operation. When performing installation procedures,
however, take proper static control precautions to
prevent damage to equipment. If you are not sure
of the proper static control precautions, contact
your nearest sales or service representative.
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WARNING:
Never install the access carrier on its side. Make sure that it is installed in an
upright position. You MUST ensure that the cards remain in a vertical,
upright position while the unit is operating.
Installing the Access Carrier into a Cabinet/Rack
One 72-inch cabinet can hold up to six access carriers; however, a cabinet does not
need to be fully populated. The minimum vertical distance between access carriers is
1U (1.75 inches, EIA-310-C standard). Follow these rules during installation:
Install access carriers from the bottom of the cabinet and work up. This provides
the following:
— Proper alignment for subsequent access carriers.
— Easier installation since the access carriers can be lowered onto the mounting
screws from above.
— Convenient connection of the interface cables.
— Proper cabinet balance. Bottom-up installation keeps the cabinet from
becoming top heavy.
Install the access carrier into the cabinet/rack before installing any cards in the
unit.
Use some type of strain relief to support multiple cables.
The cabinet/rack may or may not have threaded screw holes.
If the
cabinet/rack . . .
Has threaded screw
holes
Does not have
threaded screw holes
Then use the . . .
Short Phillips-head screws included in the hardware package
and follow the procedure in Installing in a Cabinet/Rack with
Threaded Screw Holes on page 4 .
Speed Nuts and the longer Phillips-head screws included in
the hardware package and follow the procedure in Installing a
Cabinet/Rack without Threaded Screw Holes on page 5 .
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496-15149