User Manual

70 Part 004071A revision 00b August 6, 2003
Amosphere NPM Installation Procedures (MMDS)
Attach the Radio Shelves to the Radio Rack
Depending on the configuration of your NPM basestation, there may be one,
two, or three radio shelves that need to be installed. The radio shelves are
installed in the bottom three bays in the radio rack. If your basestation uses fewer
than three radio shelves, you need to add dummy shelves to the empty bays to
ensure the required airflow to the occupied bays.
 To attach the radio shelves to the radio rack
1 Remove the radio shelf from its protective bag.
NOTE: Each shelf weighs approximately 6.3 kg (14 pounds)
before it is filled with cards.
You can distinguish the radio shelves from the utility shelf by
reading the manufacturer’s label on the shelf.
2 Slide the radio shelf into the lowest available radio shelf bay in the radio rack.
If the bay is too tight to accommodate the radio shelf, loosen the 5/16-inch screws
that hold the cable troughs to the rack. This should provide enough space for you
to slide in the radio shelf.
If any of the cable brackets interfere with the insertion of the radio shelf, remove
them. The cable brackets attach to the rack using 5/16-inch screws.
3 Puncture a hole in the grounding tape for each radio shelf screw location.
4 Secure the radio shelf to the rack using eight 5/16-inch screws. Torque each
screw to 50 inch-pounds.
5 Reattach any cable brackets you removed.
6 Retighten the 5/16-inch screws on any loosened cable troughs.
7 Repeat steps 1 to 6 for the remaining radio shelves.
WARNING: Your basestation may arrive with the utility and radio shelves
already populated with cards. If this is the case, ensure that you are properly
grounded before handling the shelves. Failure to do so may damage the
cards.
installation.book Page 70 Wednesday, August 6, 2003 6:06 PM